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Pisces–Eridanus stellar stream

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Pisces–Eridanus stellar stream is a close stellar stream, between 80 and 226 parsecs away, and stretching 120° across the sky, an open cluster that was stretched apart by past gravitational interactions. By analysis of the highest mass member stars, it is estimated to be only 120 million years old, a similar age to the Pleiades.[1][2]

According to a 2020 study, this stellar stream contains about 1400 stars moving together and has a mass of 770 M.[3]

Stars

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The stream includes at least 6 naked eye stars: Lambda Tauri at 3.5 magnitude, 148 parsec distance; Omicron Aquarii at 4.7 magnitude, 134 parsec distance; 106 Aquarii at 5.2 magnitude, 114 parsec distance; 108 Aquarii at 5.2 magnitude, 98 parsec distance; Tau1 Aquarii at 5.7 magnitude, 97 parsec distance; and Nu Fornacis at 4.7 magnitude and 114 parsec distance.[citation needed]

Members in the Stream[1]
Star HD HR HIP Constellation App. mag (V) Dist. (ly) Class Notes
λ Tauri 25204 1239 18724 Taurus 3.47 480 B3 V Brightest member; binary
ν Fornacis 12767 612 9677 Fornax 4.69 370 B9...
ο Aquarii 209409 8402 108874 Aquarius 4.71 440 B7 IVe
108 Aquarii 223640 9031 117629 Aquarius 5.19 319 A0... Peculiar; closest member
106 Aquarii 222847 8998 117089 Aquarius 5.24 370 B9 V
τ1 Aquarii 215766 8673 112542 Aquarius 5.66 355

See also

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References

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  1. ^ a b Curtis, Jason L.; Agüeros, Marcel A.; Mamajek, Eric E.; Wright, Jason T.; Cummings, Jeffrey D. (1 August 2019). "TESS Reveals that the Nearby Pisces–Eridanus Stellar Stream is only 120 Myr Old". The Astronomical Journal. 158 (2): 77. arXiv:1905.10588. Bibcode:2019AJ....158...77C. doi:10.3847/1538-3881/ab2899. ISSN 0004-6256.
  2. ^ Hawkins, Keith; Lucey, Madeline; Curtis, Jason (1 August 2020). "The chemical nature of the young 120-Myr-old nearby Pisces–Eridanus stellar stream flowing through the Galactic disc". Monthly Notices of the Royal Astronomical Society. 496 (2): 2422–2435. arXiv:2003.04940. Bibcode:2020MNRAS.496.2422H. doi:10.1093/mnras/staa1673. ISSN 0035-8711.
  3. ^ Röser, Siegfried; Schilbach, Elena (2020-06-01). "A census of the nearby Pisces-Eridanus stellar stream - Commonalities with and disparities from the Pleiades". Astronomy & Astrophysics. 638: A9. arXiv:2002.03610. doi:10.1051/0004-6361/202037691. ISSN 0004-6361.