14 Comae Berenices
 
| |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Coma Berenices |
| Right ascension | 12h 26m 24.06444s[1] |
| Declination | +27° 16′ 05.6554″[1] |
| Apparent magnitude (V) | 4.95[2] |
| Characteristics | |
| Spectral type | F1IV[3] |
| U−B color index | +0.18[2] |
| B−V color index | +0.27[2] |
| Astrometry | |
| Radial velocity (Rv) | −2.20[4] km/s |
| Proper motion (μ) | RA: −14.20[1] mas/yr Dec.: −10.32[1] mas/yr |
| Parallax (π) | 11.82 ± 0.24[1] mas |
| Distance | 276 ± 6 ly (85 ± 2 pc) |
| Absolute magnitude (MV) | +0.35[5] |
| Details[6] | |
| Mass | 2.4[5] M☉ |
| Radius | 23 R☉ |
| Surface gravity (log g) | 3.4[6] cgs |
| Temperature | 7,300 K |
| Rotational velocity (v sin i) | 226[5] km/s |
| Age | 500 Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
14 Comae Berenices (14 Com) is a star in the constellation Coma Berenices. Its apparent magnitude is 4.92. It is a shell star and a spectroscopic binary.
References
- 1 2 3 4 5 Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653. arXiv:0708.1752
. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. - 1 2 3 Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237. Bibcode:2002yCat.2237....0D.
- ↑ Gray, R. O.; Napier, M. G.; Winkler, L. I. (2001). "The Physical Basis of Luminosity Classification in the Late A-, F-, and Early G-Type Stars. I. Precise Spectral Types for 372 Stars". The Astronomical Journal. 121 (4): 2148. Bibcode:2001AJ....121.2148G. doi:10.1086/319956.
- ↑ Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065.
- 1 2 3 Pizzolato, N.; Maggio, A.; Sciortino, S. (2000). "Evolution of X-ray activity of 1-3 Msun late-type stars in early post-main-sequence phases". Astronomy and Astrophysics. 361: 614. Bibcode:2000A&A...361..614P.
- 1 2 Dominy, J. F.; Smith, M. A. (1977). "A spectroscopic study of 14 Comae and other A-type shell stars". Astrophysical Journal. 217: 494. Bibcode:1977ApJ...217..494D. doi:10.1086/155598.
This article is issued from Wikipedia - version of the 4/14/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.