T Persei
T Persei is a red supergiant located in the constellation Perseus.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Perseus |
| Right ascension | 2h 19m 21.87884s[1] |
| Declination | +58° 57′ 40.3271″[1] |
| Apparent magnitude (V) | 8.34-9.70[2] |
| Characteristics | |
| Spectral type | M2Iab[3] |
| U−B color index | +2.62[4] |
| B−V color index | +2.33[4] |
| Variable type | SRc[2] |
| Astrometry | |
| Radial velocity (Rv) | −40.85[5] km/s |
| Proper motion (μ) | RA: 0.31[1] mas/yr Dec.: −2.42[1] mas/yr |
| Parallax (π) | 2.15 ± 1.24[1] mas |
| Distance | 2,345±55[6] pc |
| Absolute magnitude (MV) | −6.90±0.07[6] |
| Details[6] | |
| Mass | 9-12 M☉ |
| Radius | 510±20 R☉ |
| Luminosity | 45,700+4,400 −4,000 L☉ |
| Surface gravity (log g) | 0.06±0.05 cgs |
| Temperature | 3750±60 K |
| Metallicity [Fe/H] | −0.35 dex |
| Other designations | |
| Database references | |
| SIMBAD | data |
T Persei Media
A light curve for T Persei, plotted from AAVSO data
References
- ↑ 1.0 1.1 1.2 1.3 1.4 Van Leeuwen, F.. Validation of the new Hipparcos reduction. Astronomy and Astrophysics 474 (2) (2007). p. 653–664. doi:10.1051/0004-6361:20078357.
- ↑ 2.0 2.1 Samus, N. N.. 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 (2009).
- ↑ Kiss, L. L.. Variability in red supergiant stars: Pulsations, long secondary periods and convection noise. Monthly Notices of the Royal Astronomical Society 372 (4) (2006). p. 1721–1734. doi:10.1111/j.1365-2966.2006.10973.x.
- ↑ 4.0 4.1 Ducati, J. R.. VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system. CDS/ADC Collection of Electronic Catalogues 2237 (2002).
- ↑ Famaey, B.. Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters. Astronomy and Astrophysics 430 (2005). p. 165. doi:10.1051/0004-6361:20041272.
- ↑ 6.0 6.1 6.2 Baron, F.. Chara/mirc Observations of Two M Supergiants in Perseus Ob1: Temperature, Bayesian Modeling, and Compressed Sensing Imaging. The Astrophysical Journal 785 (1) (2014). p. 46. doi:10.1088/0004-637X/785/1/46.
