Talk:List of voids/workpage
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Forenotes
[edit]Discussion
[edit]Work Area
[edit]Sample area
[edit]Void (astronomy) - new table
[edit]- new table
Name | Coordinates of the centre |
Distance to the centre |
Dimensions | Data | Notes |
---|---|---|---|---|---|
Local Void | 18h 38m +18° | cz=2500km/s | Diameter = 60 Mpc | [1] | |
Northern Local Supervoid | 61Mpc | Diameter = 104 Mpc | Virgo Supercluster, Coma Supercluster, Perseus-Pisces Supercluster, Ursa Major-Lynx Supercluster, Hydra-Centaurus Supercluster, Sculptor Supercluster, Pavo-Corona Australes Supercluster form a sheet between the Northern Local Supervoid and the Southern Local Supervoid. [2] The Hercules Supercluster separates the Northern Local Void from the Bootes Void. [2] The Perseus-Pisces Supercluster and Pegasus Supercluster form a sheet separate the Northern Local Void and Southern Local Void from the Pegasus Void. [2] | ||
Southern Local Supervoid | 96Mpc | Diameter = 112 Mpc | Virgo Supercluster, Coma Supercluster, Perseus-Pisces Supercluster, Ursa Major-Lynx Supercluster, Hydra-Centaurus Supercluster, Sculptor Supercluster, Pavo-Corona Australes Supercluster form a sheet between the Northern Local Supervoid and the Southern Local Supervoid. [2] The Perseus-Pisces Supercluster and Pegasus Supercluster form a sheet separate the Northern Local Void and Southern Local Void from the Pegasus Void. [2] | ||
Giant Void | 13h 01m +38.7° | z=0.116 | Diameter = 300-400 Mpc | "Giant Void in NGH" or "AR-Lp 36" ; NGH stands for "Northern Galactic Hemisphere" ; discovered in 1988 [3] It is the largest void in the NGH where z<0.14 [4] | |
Bootes Void (Great Void) |
14h 20m 26° | 150Mpc | Diameter = 100 Mpc | The Hercules Supercluster separates the Northern Local Void from the Bootes Void. [2] The Hercules Supercluster thus forms part of the near edge of the Bootes Void. [5] | |
Canis Major Void | |||||
Columba Void | |||||
Coma Void | Discovered in 1975, along with the Coma Supercluster, it lies in front of the Coma Cluster. [6] It was the first void to be discovered, and is approximtely 1/3 as far away as the much larger Bootes Void. [7] | ||||
Corona Borealis Void | |||||
Eridanus Void | This void is separated from the Sculptor void by a sheet of galaxies. [8] | ||||
Eridanus Supervoid (Great Void) |
03h 15m 05s −19° 35′ 02″ | z=1 | Diameter = 150 Mpc | The claimed Eridanus Supervoid or "Great Void", reported on 24 August 2007 by the NRAO from Very Large Array Sky Survey data.[9] This void, if real, would be much larger than the others listed here, being about 300/h Mpc in diameter and 1800–3000/h Mpc distant (where h is the Hubble constant). It would be associated with (and be the explanation of) a cold spot in the cosmic microwave background at the sky location.
The evidence for such a "Great Void" is disputed by Smith and Huterer.[10] They showed that the claims made of observational evidence for such a void from survey data neglected systematic effects, and did not account for a posteriori choices made in analyzing data. | |
Southern Eridanus Void | The Southern Eridanus void is connected to the Eridanus void by a hole in the distribution of galaxies separating the two. A hole in the distribution of galaxies separating Sculptor and Southern Eridanus voids the size of (redshift) 1250km/s appears to exist. [8] | ||||
Fornax Void | |||||
Hercules Void | 15.5h +30° | cz=7000km/s | Diameter = 3100 km/s | [11] discovered in 1979 [12] [5] | |
Microscopium Void | A hole in the distribution of galaxies separating Sculptor and Microscopium voids the size of (redshift) 1250km/s appears to exist. This is roughly 1/2 of Microscopium's diameter. [8] | ||||
Ophiucus Void | near 17h −25° | less than 5000 km/s (the outer limit) | perhaps 0-5000 km/s | 25% of average universe density is the void density of matter | The far end of this void is defined by the Ophiucus Supercluster [13] |
Pegasus Void | 22h +15° | cz=5500km/s | Diameter = 40 Mpc | [14] The Perseus-Pisces Supercluster and Pegasus Supercluster form a sheet separate the Northern Local Void and Southern Local Void from the Pegasus Void. [2] | |
Perseus-Pisces Void | 1h +10° | cz=8000km/s | Diameter = 3000 km/s | Discovered in 1980 [12], it is also called the Perseus Void | |
Sagittarius Void | |||||
Sculptor Void | 23h 48m −24° 39′ | Diameter = 34.8 Mpc/h | Corresponds to SRSS1 Void 3 and SRSS2 Void 5 [15] This void is separated from the Eridanus Void by a sheet of galaxies. A hole in the distribution of galaxies separating Sculptor and Micrsocopium Voids the size of 1250km/s appears to exist. A hole in the distribution of galaxies separating Sculptor and Southern Eridanus Voids the size of 1250km/s appears to exist. [8] The Sculptor Void lies next to the Southern Wall or Southern Great Wall. | ||
Taurus Void | Diameter = 100 Mly | The Taurus Void appears large and circular, and has walls of galaxies surrounding it. It lies next to the Perseus-Pisces Supercluster, and is the most visually identifiable. Several galaxies have been found to reside in the void, such as UGC 2627 and UGC 2629, both approximately 185 million light years away. [16] | |||
[17] [18] |
- candidates for inclusion
Name | Location | Distance | Dimensions | Data | Notes |
---|---|---|---|---|---|
List of voids - new table
[edit]Named Voids
[edit]Name | Coordinates of the centre |
Distance to the centre |
Dimensions | Data | Notes |
---|---|---|---|---|---|
Local Void | 18h 38m +18° | cz=2500km/s | Diameter = 60 Mpc | [19] | |
Northern Local Supervoid | 61Mpc | Diameter = 104 Mpc | Virgo Supercluster, Coma Supercluster, Perseus-Pisces Supercluster, Ursa Major-Lynx Supercluster, Hydra-Centaurus Supercluster, Sculptor Supercluster, Pavo-Corona Australes Supercluster form a sheet between the Northern Local Supervoid and the Southern Local Supervoid. [2] The Hercules Supercluster separates the Northern Local Void from the Bootes Void. [2] The Perseus-Pisces Supercluster and Pegasus Supercluster form a sheet separate the Northern Local Void and Southern Local Void from the Pegasus Void. [2] | ||
Southern Local Supervoid | 96Mpc | Diameter = 112 Mpc | Virgo Supercluster, Coma Supercluster, Perseus-Pisces Supercluster, Ursa Major-Lynx Supercluster, Hydra-Centaurus Supercluster, Sculptor Supercluster, Pavo-Corona Australes Supercluster form a sheet between the Northern Local Supervoid and the Southern Local Supervoid. [2] The Perseus-Pisces Supercluster and Pegasus Supercluster form a sheet separate the Northern Local Void and Southern Local Void from the Pegasus Void. [2] | ||
Giant Void | 13h 01m +38.7° | z=0.116 | Diameter = 300-400 Mpc | "Giant Void in NGH" or "AR-Lp 36" ; NGH stands for "Northern Galactic Hemisphere" ; discovered in 1988 [20] It is the largest void in the NGH where z<0.14 [21] | |
[22] [23] |
Voids designated by their constellation
[edit]Name | Coordinates of the centre |
Distance to the centre |
Dimensions | Data | Notes |
---|---|---|---|---|---|
Bootes Void (Great Void) |
14h 20m 26° | 150Mpc | Diameter = 100 Mpc | The Hercules Supercluster separates the Northern Local Void from the Bootes Void. [2] The Hercules Supercluster thus forms part of the near edge of the Bootes Void. [5] | |
Canis Major Void | |||||
Capricornus Void | 400Mpc | Diameter = 230 Mpc | |||
Columba Void | |||||
Coma Void | Discovered in 1975, along with the Coma Supercluster, it lies in front of the Coma Cluster. [24] It was the first void to be discovered, and is approximtely 1/3 as far away as the much larger Bootes Void. [25] | ||||
Corona Borealis Void | |||||
Eridanus Void | This void is separated from the Sculptor void by a sheet of galaxies. [8] | ||||
Eridanus Supervoid (Great Void) |
03h 15m 05s −19° 35′ 02″ | z=1 | Diameter = 150 Mpc | The claimed Eridanus Supervoid or "Great Void", reported on 24 August 2007 by the NRAO from Very Large Array Sky Survey data.[26] This void, if real, would be much larger than the others listed here, being about 300/h Mpc in diameter and 1800–3000/h Mpc distant (where h is the Hubble constant). It would be associated with (and be the explanation of) a cold spot in the cosmic microwave background at the sky location.
The evidence for such a "Great Void" is disputed by Smith and Huterer.[27] They showed that the claims made of observational evidence for such a void from survey data neglected systematic effects, and did not account for a posteriori choices made in analyzing data. | |
Southern Eridanus Void | The Southern Eridanus void is connected to the Eridanus void by a hole in the distribution of galaxies separating the two. A hole in the distribution of galaxies separating Sculptor and Southern Eridanus voids the size of (redshift) 1250km/s appears to exist. [8] | ||||
Fornax Void | |||||
Hercules Void | 15.5h +30° | cz=7000km/s | Diameter = 3100 km/s | [28] discovered in 1979 [12] [5] | |
Microscopium Void | A hole in the distribution of galaxies separating Sculptor and Microscopium voids the size of (redshift) 1250km/s appears to exist. This is roughly 1/2 of Microscopium's diameter. [8] | ||||
Ophiucus Void | near 17h −25° | less than 5000 km/s (the outer limit) | perhaps 0-5000 km/s | 25% of average universe density is the void density of matter | The far end of this void is defined by the Ophiucus Supercluster [29] |
Pegasus Void | 22h +15° | cz=5500km/s | Diameter = 40 Mpc | [30] The Perseus-Pisces Supercluster and Pegasus Supercluster form a sheet separate the Northern Local Void and Southern Local Void from the Pegasus Void. [2] | |
Perseus-Pisces Void | 1h +10° | cz=8000km/s | Diameter = 3000 km/s | Discovered in 1980 [12], it is also called the Perseus Void | |
Sagittarius Void | |||||
Sculptor Void | 23h 48m −24° 39′ | Diameter = 34.8 Mpc/h | Corresponds to SRSS1 Void 3 and SRSS2 Void 5 [31] This void is separated from the Eridanus Void by a sheet of galaxies. A hole in the distribution of galaxies separating Sculptor and Micrsocopium Voids the size of 1250km/s appears to exist. A hole in the distribution of galaxies separating Sculptor and Southern Eridanus Voids the size of 1250km/s appears to exist. [8] The Sculptor Void lies next to the Southern Wall or Southern Great Wall. | ||
Taurus Void | Diameter = 100 Mly | The Taurus Void appears large and circular, and has walls of galaxies surrounding it. It lies next to the Perseus-Pisces Supercluster, and is the most visually identifiable. Several galaxies have been found to reside in the void, such as UGC 2627 and UGC 2629, both approximately 185 million light years away. [32] | |||
[33] [34] |
Scratch area
[edit]SIMBAD named voids
[edit]From SIMBAD, where the primary designation used by SIMBAD is a name. [35]
Name | Coordinates | Distance | Dimensions | Data | Notes |
---|---|---|---|---|---|
Local Void | 18h 38m +18° | 2500 km/s | 60Mpc | [36] | |
Bootes Void | 14h 20m 26° | 15500 km/s (150 Mpc/h) | diameter = 3100 km/s (100 Mpc/h) | no data in SIMBAD, just the name ; part of the near edge of the void is formed by the Hercules Supercluster. [5] | |
Hercules Void | 15.5h +30° | 7000 km/s |
|
no data in SIMBAD, just the name ; ; [37] discovered in 1979 [12] [5] | |
Ophiucus Void | near 17h −25° | less than 5000 km/s (the outer limit) | perhaps 0-5000 km/s | 25% of average universe density is the void density of matter | no data in SIMBAD, just the name ; The far end of this void is defined by the Ophiucus Supercluster [38] |
Perseus-Pisces Void | 1h +10° | 8000 km/s |
|
no data in SIMBAD, just the name ; discovered in 1980 [12] Also called the Perseus Void | |
Sculptor Void | 23h 48m −24° 39′ | diameter = 34.8 Mpc/h | no data in SIMBAD, just the name ; corresponds to SRSS1 Void 3 and SRSS2 Void 5 [39] The Sculptor Void lies next to the Southern Wall or Southern Great Wall. | ||
Giant Void in NGH | 13h 01m +38.7° | z=0.116 | diameter = 300-400 Mpc | "Giant Void", aka AR-Lp 36, aka GV ; NGH stands for "Northern Galactic Hemisphere" ; discovered in 1988 [40] It is the largest void in the NGH where z<0.14 |
From SIMBAD, searches where primary name is a void, but which have no type=void [42]
Name | Coordinates | Distance | Dimensions | Data | Notes |
---|---|---|---|---|---|
Coma Void | Discovered in 1975, along with the Coma Supercluster, it lies in front of the Coma Cluster. [43] It was the first void to be discovered, and is approximtely 1/3 as far away as the much larger Bootes Void. [44] | ||||
Eridanus Void | |||||
Microscopium Void | |||||
Pegasus Void | 22h +15° | cz=5500km/s | 40 Mpc (3000 km/s) | [45] |
SSRS1 list
[edit]A redshift survey of galaxies in the southern sky in 1988, out to a distance of 120 Mpc/h, revealed some voids. [46]
# | Coordinates of the centre |
Distance to the centre (V) |
Dimensions W x H x D (h-1Mpc) |
Notes |
---|---|---|---|---|
1 | 1.5h −50° | 3000 km/s | 30 x 30 x 40 | Located just behind the galaxy concentration in Eridanus-Fornax-Dorado |
2 | 21h −25° | 5000 km/s | 30 x 30 x 30 | |
3 | 23.5h −35° | 6000 km/s | 70 x 30 x 50 | |
4 | 4h −40° | 9000 km/s | 50 x 100 x 50 |
SSRS2 list
[edit]In 1994, a redshift survey in the southern sky identified 18 voids, 11 of which are major voids. [47]
# | Coordinates of the centre |
Distance to the centre (r) |
Diameter (h-1Mpc) |
Notes |
---|---|---|---|---|
1 | 1h 33m −16° 45′ | 85.7 | 54.3 | major void |
2 | 3h 34m −28° 50′ | 99.7 | 56.2 | major void SRSS1 Void 4 |
3 | 22h 25m −14° 46′ | 107.2 | 60.8 | major void |
4 | 21h 43m −14° 40′ | 66.7 | 35.6 | major void |
5 | 23h 48m −24° 39′ | 53.0 | 34.8 | major void SRSS1 Void 3 (Sculptor Void) |
6 | 3h 56m −20° 11′ | 56.5 | 32.0 | major void |
7 | 3h 17m −11° 40′ | 77.2 | 25.5 | major void |
8 | 23h 20m −12° 32′ | 83.9 | 27.8 | major void |
9 | 3h 06m −13° 47′ | 114.6 | 39.0 | major void |
10 | 0h 26m −9° 17′ | 104.7 | 34.8 | major void |
11 | 0h 21m −29° 43′ | 112.8 | 42.9 | major void |
12 | 23h 03m −32° 35′ | 74.8 | 25.0 | |
13 | 1h 23m −19° 36′ | 31.0 | 22.1 | SRSS1 Void 1 |
14 | 21h 28m −29° 28′ | 87.2 | 21.3 | |
15 | 21h 24m −33° 17′ | 116.1 | 27.3 | |
16 | 21h 43m −18° 41′ | 36.5 | 20.3 | |
17 | 3h 42m −21° 21′ | 32.1 | 19.0 | |
18 | 4h 18m −8° 42′ | 85.9 | 21.1 |
Galactic Anti-Center IRAS search
[edit]In a 1995 study of IRAS data looking for large-scale structure in the Galactic Anticenter in the Zone of Avoidance, four voids were discovered. [48]
# | Coordinates of the centre (B1950.0) |
Distance to the centre (km/s) |
Dimensions ( degrees x degrees x km/s ) |
Notes |
---|---|---|---|---|
V0 | 5.2h +18° | 1000 | 96x36x2000 | |
V1 | 3.5h +18° | 3750 | 15x36x3500 | V1 and V2 are connected, and block the Perseus-Pisces Supercluster from traversing the Zone of Avoidance |
V2 | 3.5h +29° | 8000 | 25x14x2000 | V1 and V2 are connected, and block the Perseus-Pisces Supercluster from traversing the Zone of Avoidance |
V3 | 8.0h +10° | 7000 | 30x20x2000 | This void lies in front of the CfA2 Great Wall |
IRAS list
[edit]Analysis of the IRAS redshift survey in 1997 revealed 24 voids, 12 of which were termed "significant" [49]
# | Supergalactic Coordinates to the centre (r,X,Y,Z) |
Diameter (h-1Mpc) |
Data | Notes |
---|---|---|---|---|
1 | (55.2,-10.4,-53.8,6.1) | 51.0 | significant void | |
2 | (49.6,-25.3,31.4,-28.9) | 43.8 | significant void | |
3 | (46.0,-24.8,26.7,28.1) | 44.5 | significant void | |
4 | (46.5,8.7,24.7,38.4) | 45.0 | significant void Local Void | |
5 | (32.0,-13.0,-23.9,-16.9) | 36.0 | significant void | |
6 | (51.5,17.0,-32.2,36.4) | 41.4 | significant void | |
7 | (57.1,31.2,44.9,16.5) | 43.5 | significant void | |
8 | (60.4,-25.8,-22.7,-49.7) | 39.5 | significant void | |
9 | (49.8,35.9,-25.6,-23.0) | 36.0 | significant void | |
10 | (63.3,-48.0,-40.9,6.0) | 33.6 | significant void Sculptor Void | |
11 | (48.6,11.8,46.6,-6.9) | 32.0 | significant void | |
12 | (49.9,-15.6,-35.7,31.3) | 31.5 | significant void | |
13 | (62.8,14.2,29.3,-53.7) | 40.3 | ||
14 | (19.0,0.7,-16.4,9.6) | 28.8 | ||
15 | (37.6,32.4,-17.0,8.6) | 30.4 | Perseus-Pisces Void |
Abell-derived list
[edit]In a 1985 study of Abell clusters, 29 voids wee determined, in the sphere z<0.1 around us. [50]
# | Coordinates of the centre |
Distance to the centre (h-1Mpc) |
Diameter (h-1Mpc) |
Notes |
---|---|---|---|---|
1 | 0.0h +20° | 293 | 100 | |
2 | 0.3h 0° | 276 | 100 | |
3 | 0.7h +10° | 284 | 100 | |
4 | 2.0h −13° | 275 | 150 | |
5 | 8.0h +60° | 300 | 100 | |
6 | 9.0h +18° | 220 | 100 | |
7 | 9.0h +67° | 180 | 120 | |
8 | 9.2h +26° | 137 | 140 | |
9 | 9.5h +45° | 262 | 200 | |
10 | 9.8h 0° | 285 | 110 | |
11 | 9.8h +35° | 219 | 110 | |
12 | 10.8h −10° | 293 | 120 | |
13 | 12.0h +14° | 206 | 110 | |
14 | 12.3h 0° | 276 | 100 | |
15 | 12.4h −12° | 272 | 150 | |
16 | 12.5h +32° | 237 | 100 | |
17 | 12.9h +64° | 105 | 110 | |
18 | 13.6h +35° | 154 | 200 | Bootes Void |
19 | 13.8h +20° | 297 | 110 | |
20 | 14.2h −4° | 265 | 210 | |
21 | 14.7h +70° | 283 | 160 | |
22 | 15.2h +42° | 286 | 140 | |
23 | 16.0h +7° | 295 | 110 | |
24 | 16.4h +41° | 291 | 130 | |
25 | 16.5h +59° | 110 | 100 | |
26 | 17.2h +58° | 237 | 100 | |
27 | 22.2h −2° | 155 | 130 | |
28 | 22.5h 5° | 284 | 160 | |
29 | 23.5h −7° | 203 | 120 |
Tully list
[edit]In 1985, Tully determined a local dominant supercluster plane, and found the Pisces-Cetus Supercluster Complex. [51]
# | Coordinates of the centre |
Distance to the centre (h-1Mpc) |
Diameter (h-1Mpc) |
Notes |
---|---|---|---|---|
1 | 17.0h 80° | 90 | 140 | |
2 | 21.0h −7° | 100 | 136 | |
3 | 8.6h +13° | 150 | 150 | |
4 | 21.5h +5° | 170 | 173 | |
5 | 14.3h +52° | 180 | 158 | Bootes Void |
6 | 23.0h −16° | 190 | 171 | |
7 | 12.8h +14° | 190 | 174 | |
8 | 10.0h +35° | 250 | 170 | |
9 | 2.6h −11° | 280 | 229 | |
10 | 8.7h +58° | 310 | 243 | |
11 | 16.8h +5° | 310 | 270 |
EETDA list
[edit]A 1994 census lists a total of 27 supervoids within a cube of 740 Mpc a side, centered on us (z=0.1 distant sphere).[52]
# | Coordinates (B1950.0) |
Distance (Mpc/h) [Note 1] |
Diameter (Mpc/h) [Note 2] |
Notes |
---|---|---|---|---|
1 | 19.0h −57.1° | 134 | 88 | |
2 | 28.2h −12.3° | 207 | 96 | |
3 | 34.8h −61.9° | 216 | 72 | |
4 | 36.6h −33.5° | 241 | 86 | |
5 | 37.8h −36.1° | 129 | 92 | |
6 | 46.0h −21.4° | 236 | 72 | |
7 | 62.0h −8.0° | 248 | 100 | |
8 | 71.2h −38.3° | 201 | 76 | |
9 | 121.7h −1.5° | 96 | 112 | Southern Local Supervoid |
10 | 130.0h +49.3° | 246 | 144 | |
11 | 140.4h +10.5° | 160 | 92 | |
12 | 146.9h +27.4° | 227 | 106 | |
13 | 153.1h −11.4° | 246 | 94 | |
14 | 159.9h +1.2° | 167 | 68 | |
15 | 161.6h −32.2° | 241 | 98 | |
16 | 167.4h +22.8° | 222 | 74 | |
17 | 186.9h −15.6° | 216 | 94 | |
18 | 196.8h +9.5° | 119 | 102 | |
19 | 204.8h +35.7° | 119 | 108 | |
20 | 214.6h +13.6° | 216 | 78 | Boötes void (Great Void) |
21 | 216.7h +56.5° | 143 | 116 | |
22 | 219.8h +57.9° | 246 | 96 | |
23 | 220.2h +33.9° | 219 | 72 | |
24 | 256.1h −4.8° | 61 | 104 | Northern Local Supervoid |
25 | 353.0h −59.4° | 198 | 74 | |
26 | 356.6h +22.2° | 246 | 80 | |
27 | 358.9h −33.1° | 241 | 70 |
Voids
[edit]Name | Dimensions | Location | Data | Notes |
---|---|---|---|---|
Local Void | 60 Mpc in diameter | 18h 38m +18° | ||
Northern Local Supervoid | Virgo Supercluster, Coma Supercluster, Perseus-Pisces Supercluster, Ursa Major-Lynx Supercluster, Hydra-Centaurus Supercluster, Sculptor Supercluster, Pavo-Corona Australes Supercluster form a sheet between the Northern Local Supervoid and the Southern Local Supervoid. [2] The Hercules Supercluster separates the Northern Local Void from the Bootes Void. [2] The Perseus-Pisces Supercluster and Pegasus Supercluster form a sheet separate the Northern Local Void and Southern Local Void from the Pegasus Void. [2] | |||
Southern Local Supervoid | Virgo Supercluster, Coma Supercluster, Perseus-Pisces Supercluster, Ursa Major-Lynx Supercluster, Hydra-Centaurus Supercluster, Sculptor Supercluster, Pavo-Corona Australes Supercluster form a sheet between the Northern Local Supervoid and the Southern Local Supervoid. [2] The Perseus-Pisces Supercluster and Pegasus Supercluster form a sheet that separate the Northern Local Void and Southern Local Void from the Perseus Void. [2] | |||
Capricornus Void | ||||
Eridanus Void | This void is separated from the Sculptor void by a sheet of galaxies. [8] | |||
Eridanus Supervoid | The claimed Eridanus Supervoid or "Great Void", reported on 24 August 2007 by the NRAO from Very Large Array Sky Survey data.[53] This void, if real, would be much larger than the others listed here, being about 300/h Mpc in diameter and 1800–3000/h Mpc distant (where h is the Hubble constant). It would be associated with (and be the explanation of) a cold spot in the cosmic microwave background at the sky location.
The evidence for such a "Great Void" is disputed by Smith and Huterer.[54] They showed that the claims made of observational evidence for such a void from survey data neglected systematic effects, and did not account for a posteriori choices made in analyzing data. | |||
Southern Eridanus Void | The Southern Eridanus void is connected to the Eridanus void by a hole in the distribution of galaxies separating the two. A hole in the distribution of galaxies separating Sculptor and Southern Eridanus voids the size of (redshift) 1250km/s appears to exist. [8] | |||
Microscopium Void | A hole in the distribution of galaxies separating Sculptor and Microscopium voids the size of (redshift) 1250km/s appears to exist. This is roughly 1/2 of Microscopium's diameter. [8] | |||
Sagittarius Void | ||||
Sculptor Void | This void is separated from the Eridanus void by a sheet of galaxies. A hole in the distribution of galaxies separating Sculptor and Micrsocopium voids the size of (redshift) 1250km/s appears to exist. A hole in the distribution of galaxies separating Sculptor and Southern Eridanus voids the size of (redshift) 1250km/s appears to exist. [8] | |||
Taurus Void | 100 million light years in diameter | The Taurus Void appears large and circular, and has walls of galaxies surrounding it. It lies next to the Perseus-Pisces Supercluster, and is the most visually identifiable. Several galaxies have been found to reside in the void, such as UGC 2627 and UGC 2629, both approximately 185 million light years away. [55] |
C4 | 13h 19m +47.5° | cz=3690km/s | diameter=20Mpc (1500km/s) | [56] |
Endnotes
[edit]References
[edit]- ^ Nakanishi, Kouichiro; Takata, Tadafumi; Yamada, Toru; Takeuchi, Tsutomu T.; Shiroya, Ryuichi; Miyazawa, Morio; Watanabe, Shigeo; Saito, Mamoru (1997) "Search and Redshift Survey for IRAS Galaxies behind the Milky Way and Structure of the Local Void" Astrophysical Journal Supplement, v.112, p.245 Bibcode:1997ApJS..112..245N doi:10.1086/313039
- ^ a b c d e f g h i j k l m n o p q r s Einasto, Jaan; Einasto, Maret; Gramann, Mirt (1989) "Structure and formation of superclusters. IX - Self-similarity of voids" Royal Astronomical Society, Monthly Notices (ISSN 0035-8711), vol. 238, May 1, 1989, p. 155-177. Bibcode:1989MNRAS.238..155E Cite error: The named reference "EEG1989" was defined multiple times with different content (see the help page).
- ^ "The Northern Cone of Metagalaxy" (Kopylov et al. 1988)
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- ^ Gregory, S. A. (1988) "Redshift surveys of emission-line galaxies" Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 100, Nov. 1988, p. 1340-1342. Bibcode:1988PASP..100.1340G doi:10.1086/132330
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- ^ "Astronomers Find Enormous Hole in the Universe". National Radio Astronomy Observatory Press release, retrieved 24 August 2007.
- ^ "No evidence for the cold spot in the NVSS radio survey", Kendrick Smith and Dragan Huterer (2008).
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- ^ Kopylov, A. I.; Kopylova, F. G. (2002) "Search for streaming motion of galaxy clusters around the Giant Void" Astronomy and Astrophysics, v.382, p.389-396 Bibcode:2002A&A...382..389K doi:10.1051/0004-6361:20011500
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- ^ "Astronomers Find Enormous Hole in the Universe". National Radio Astronomy Observatory Press release, retrieved 24 August 2007.
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- ^ S.A. Pustilnik (SAO), D. Engels (Hamburg), A.Y. Kniazev (ESO, SAO), A.G. Pramskij, A.V. Ugryumov (SAO), H.-J. Hagen (Hamburg) (2005) [ "HS 2134+0400 - new very metal-poor galaxy, a representative of void population?"] arXiv:astro-ph/0508255v1 Bibcode:2006AstL...32..228P doi:10.1134/S1063773706040025
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- ^ Hasegawa, Takashi; Wakamatsu, Ken-ichi; Malkan, Matthew; Sekiguchi, Kazuhiro; Menzies, John W.; Parker, Quentin A.; Jugaku, Jun; Karoji, Hiroshi; Okamura, Sadanori (2000) "Large-scale structure of galaxies in the Ophiuchus region" Monthly Notices of the Royal Astronomical Society, Volume 316, Issue 2, pp. 326-344 Bibcode:2000MNRAS.316..326H doi:10.1046/j.1365-8711.2000.03531.x
- ^ El-Ad, Hagai; Piran, Tsvi (1997) "Voids in the Large-Scale Structure" Astrophysical Journal v.491, p.421 Bibcode:1997ApJ...491..421E doi:10.1086/304973
- ^ "The Northern Cone of Metagalaxy" (Kopylov et al. 1988)
- ^ Kopylov, A. I.; Kopylova, F. G. (2002) "Search for streaming motion of galaxy clusters around the Giant Void" Astronomy and Astrophysics, v.382, p.389-396 Bibcode:2002A&A...382..389K doi:10.1051/0004-6361:20011500
- ^ SIMBAD, "list of objects in '*void' wildcard search" (accessed 15 September 2009)
- ^ Rood, Herbert J. (1988) "Supplemental topics on voids" Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 100, Sept. 1988, p. 1071-1075. Bibcode:1988PASP..100.1071R doi:10.1086/132272
- ^ Gregory, S. A. (1988) "Redshift surveys of emission-line galaxies" Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 100, Nov. 1988, p. 1340-1342. Bibcode:1988PASP..100.1340G doi:10.1086/132330
- ^ S.A. Pustilnik (SAO), D. Engels (Hamburg), A.Y. Kniazev (ESO, SAO), A.G. Pramskij, A.V. Ugryumov (SAO), H.-J. Hagen (Hamburg) (2005) [ "HS 2134+0400 - new very metal-poor galaxy, a representative of void population?"] arXiv:astro-ph/0508255v1 Bibcode:2006AstL...32..228P doi:10.1134/S1063773706040025
- ^ da Costa, L. Nicolaci; Pellegrini, P. S.; Sargent, W. L. W.; Tonry, J.; Davis, M.; Meiksin, A.; Latham, David W.; Menzies, J. W.; Coulson, I. A. (1988) "The Southern Sky Redshift Survey" Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 327, April 15, 1988, p. 544-560 Bibcode:1988ApJ...327..544D {{doi:10.1086/166215}}
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- ^ "Astronomers Find Enormous Hole in the Universe". National Radio Astronomy Observatory Press release, retrieved 24 August 2007.
- ^ "No evidence for the cold spot in the NVSS radio survey", Kendrick Smith and Dragan Huterer (2008).
- ^ NASA, "Cosmic Distance Scale"
- ^ S.A. Pustilnik (SAO), D. Engels (Hamburg), A.Y. Kniazev (ESO, SAO), A.G. Pramskij, A.V. Ugryumov (SAO), H.-J. Hagen (Hamburg) (2005) [ "HS 2134+0400 - new very metal-poor galaxy, a representative of void population?"] arXiv:astro-ph/0508255v1 Bibcode:2006AstL...32..228P doi:10.1134/S1063773706040025