V602 Carinae
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Carina |
| Right ascension | 11h 13m 29.9740s[1] |
| Declination | −60° 05′ 28.838″[1] |
| Apparent magnitude (V) | 8.39[2] (7.6 - 9.1[3]) |
| Characteristics | |
| Spectral type | M3 Ia+[3] |
| U−B color index | +2.59[2] |
| B−V color index | +2.52[2] |
| Variable type | SRC[3] |
| Astrometry | |
| Proper motion (μ) | RA: −7.4[4] mas/yr Dec.: 0.2[4] mas/yr |
| Distance | 1,977[5] pc |
| Absolute magnitude (MV) | −5.85 (variable)[6] |
| Details | |
| Mass | 17.7[7] M☉ |
| Radius | 1,050[5] R☉ |
| Luminosity | 138,000[5] L☉ |
| Surface gravity (log g) | −0.3[5] cgs |
| Temperature | 3,432[5] K |
| Other designations | |
| Database references | |
| SIMBAD | data |
V602 Carinae (V602 Car, HD 97671) is a variable star with a radius around 1,000 times the radius of the Sun. The red supergiant is in the constellation Carinaand has a spectral class of M3. It is shining with over 100,000 times the luminosity of the Sun and is losing mass at the rate of 1.9 × 10−6 times the mass of the Sun per year.[2] An excess of emission at long wavelengths from this star, as well as a small amount of silicate emission, suggests that it may be enclosed by an extensive cloud of dust.[8]
V602 Car is a semiregular variable star with a maximum brightness range of magnitude 7.6 - 9.1 and a possible periods of 635 and 678 days. Despite the large amplitude of variation, it was only named as a variable star in 2006.[9][3]
References
- 1 2 Hog, E.; Kuzmin, A.; Bastian, U.; Fabricius, C.; Kuimov, K.; Lindegren, L.; Makarov, V. V.; Roeser, S. (1998). "The TYCHO Reference Catalogue". Astronomy and Astrophysics 335: L65. Bibcode:1998A&A...335L..65H.
- 1 2 3 4 Mauron, N.; Josselin, E. (February 2011), "The mass-loss rates of red supergiants and the de Jager prescription", Astronomy and Astrophysics 526: A156, arXiv:1010.5369, Bibcode:2011A&A...526A.156M, doi:10.1051/0004-6361/201013993.
- 1 2 3 4 Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/gcvs. Originally published in: 2009yCat....102025S 1. Bibcode:2009yCat....102025S.
- 1 2 Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics 355: L27. Bibcode:2000A&A...355L..27H.
- 1 2 3 4 5 Arroyo-Torres, B.; Wittkowski, M.; Chiavassa, A.; Scholz, M.; Freytag, B.; Marcaide, J. M.; Hauschildt, P. H.; Wood, P. R.; Abellan, F. J. (2015). "What causes the large extensions of red supergiant atmospheres?. Comparisons of interferometric observations with 1D hydrostatic, 3D convection, and 1D pulsating model atmospheres". Astronomy & Astrophysics 575: A50. arXiv:1501.01560. Bibcode:2015A&A...575A..50A. doi:10.1051/0004-6361/201425212.
- ↑ Levesque, Emily M.; Massey, Philip; Olsen, K. A. G.; Plez, Bertrand; Josselin, Eric; Maeder, Andre; Meynet, Georges (2005). "The Effective Temperature Scale of Galactic Red Supergiants: Cool, but Not as Cool as We Thought". The Astrophysical Journal 628 (2): 973. arXiv:astro-ph/0504337. Bibcode:2005ApJ...628..973L. doi:10.1086/430901.
- ↑ Fadeyev, Yu. A. (2012). "Nonlinear pulsations of red supergiants". Astronomy Letters 38 (4): 260. arXiv:1112.2365. Bibcode:2012AstL...38..260F. doi:10.1134/S1063773712040032.
- ↑ Humphreys, Roberta M.; Strecker, Donald W.; Ney, E. P. (February 1972), "Spectroscopic and Photometric Observations of M Supergiants in Carina", Astrophysical Journal 172: 75, Bibcode:1972ApJ...172...75H, doi:10.1086/151329.
- ↑ Kazarovets, E. V.; Samus, N. N.; Durlevich, O. V.; Kireeva, N. N.; Pastukhova, E. N. (2006). "The 78th Name-List of Variable Stars". Information Bulletin on Variable Stars 5721: 1. Bibcode:2006IBVS.5721....1K.
See also
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