HD 183144
(Redirected from HR 7396)
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Aquila |
| Right ascension | 19h 27m 33.90756s[2] |
| Declination | +14° 16′ 56.9284″[2] |
| Apparent magnitude (V) | 6.32[3] |
| Characteristics | |
| Spectral type | B4III[4] |
| U−B color index | −0.512[5] |
| B−V color index | −0.068±0.005[5] |
| Variable type | suspected[6] |
| Astrometry | |
| Radial velocity (Rv) | +4.0±4.3[7][5] km/s |
| Proper motion (μ) | RA: 6.162[2] mas/yr Dec.: −4.550[2] mas/yr |
| Parallax (π) | 2.8745 ± 0.0280 mas[2] |
| Distance | 1,130 ± 10 ly (348 ± 3 pc) |
| Absolute magnitude (MV) | −0.66[5] |
| Details | |
| Mass | 5.1[8] M☉ |
| Radius | 5.8[9] R☉ |
| Luminosity | 2,676[10] L☉ |
| Surface gravity (log g) | 3.73[8] cgs |
| Temperature | 15,139[8] K |
| Metallicity [Fe/H] | −0.003[8] dex |
| Rotational velocity (v sin i) | 200[11] km/s |
| Age | 160[12] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 183144 is a suspected variable star in the equatorial constellation of Aquila. It is a hot giant star about 1,130 light years away.
Results from the MASCARA experiment indicate that HD 183144 is a pulsating variable star with a period of 0.3649 days, during which it varies by 0.01 magnitude in white light.[14][15] It has a mass five times that of the Sun and, at an age of 160 million years, has already evolved away from the main sequence. It has expended to nearly six times the radius of the Sun and, with an effective temperature of 15,139 K, it has a bolometric luminosity of 2,676 L☉.
References
[edit]- ^ "MAST: Barbara A. Mikulski Archive for Space Telescopes". Space Telescope Science Institute. Retrieved 29 September 2022.
- ^ a b c d e Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
- ^ Crawford, D. L.; et al. (1971). "Four-color, H-beta, and UBV photometry for bright B-type stars in the northern hemisphere". The Astronomical Journal. 76: 1058. Bibcode:1971AJ.....76.1058C. doi:10.1086/111220.
- ^ Lesh, Janet Rountree (December 1968). "The Kinematics of the Gould Belt: an Expanding Group?". Astrophysical Journal Supplement. 17: 371. Bibcode:1968ApJS...17..371L. doi:10.1086/190179.
- ^ a b c d Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. S2CID 119257644.
- ^ Kukarkin, B. V.; et al. (1981). "Nachrichtenblatt der Vereinigung der Sternfreunde e.V. (Catalogue of suspected variable stars)". Nachrichtenblatt der Vereinigung der Sternfreunde E.V. (1981). Moscow: Academy of Sciences USSR Shternberg. Bibcode:1981NVS...C......0K.
- ^ Wielen, R.; Schwan, H.; Dettbarn, C.; Lenhardt, H.; Jahreiß, H.; Jährling, R. (1999). "Sixth Catalogue of Fundamental Stars (FK6). Part I. Basic fundamental stars with direct solutions". Veroeffentlichungen des Astronomischen Rechen-Instituts Heidelberg. 35: 1. Bibcode:1999VeARI..35....1W.
- ^ a b c d Anders, F.; Khalatyan, A.; Queiroz, A. B. A.; Chiappini, C.; Ardevol, J.; Casamiquela, L.; Figueras, F.; Jimenez-Arranz, O.; Jordi, C.; Monguio, M.; Romero-Gomez, M.; Altamirano, D.; Antoja, T.; Assaad, R.; Cantat-Gaudin, T.; Castro-Ginard, A.; Enke, H.; Girardi, L.; Guiglion, G.; Khan, S.; Luri, X.; Miglio, A.; Minchev, I.; Ramos, P.; Santiago, B. X.; Steinmetz, M. (2022). "VizieR Online Data Catalog: StarHorse2, Gaia EDR3 photo-astrometric distances (Anders+, 2022)". Vizier Online Data Catalog. Bibcode:2022yCat.1354....0A.
- ^ Kervella, Pierre; Arenou, Frédéric; Thévenin, Frédéric (2022). "Stellar and substellar companions from Gaia EDR3. Proper-motion anomaly and resolved common proper-motion pairs". Astronomy and Astrophysics. 657: 657. arXiv:2109.10912. Bibcode:2022A&A...657A...7K. doi:10.1051/0004-6361/202142146. S2CID 237605138.
- ^ Fouesneau, M.; Andrae, R.; Dharmawardena, T.; Rybizki, J.; Bailer-Jones, C. A. L.; Demleitner, M. (2022). "Astrophysical parameters from Gaia DR2, 2MASS, and AllWISE". Astronomy and Astrophysics. 662: A125. arXiv:2201.03252. Bibcode:2022A&A...662A.125F. doi:10.1051/0004-6361/202141828. S2CID 245837778.
- ^ Abt, Helmut A.; et al. (July 2002). "Rotational Velocities of B Stars". The Astrophysical Journal. 573 (1): 359–365. Bibcode:2002ApJ...573..359A. doi:10.1086/340590.
- ^ Gontcharov, G. A. (2012). "Dependence of kinematics on the age of stars in the solar neighborhood". Astronomy Letters. 38 (12): 771–782. arXiv:1606.08814. Bibcode:2012AstL...38..771G. doi:10.1134/S1063773712120031. S2CID 118345778.
- ^ "HD 183144". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2021-03-02.
- ^ Burggraaff, O.; Talens, G. J. J.; Spronck, J.; Lesage, A. L.; Stuik, R.; Otten, G. P. P. L.; Van Eylen, V.; Pollacco, D.; Snellen, I. A. G. (September 2018). "Studying bright variable stars with the Multi-site All-Sky CAmeRA (MASCARA)". Astronomy and Astrophysics. 617: A32. arXiv:1806.02247. Bibcode:2018A&A...617A..32B. doi:10.1051/0004-6361/201833142.
- ^ "NSV 12049". The International Variable Star Index. AAVSO. Retrieved 29 September 2022.
