HD 93194
HD 93194 (HR 4205) is a star in the constellation Carina. Its apparent magnitude is 4.79. Its parent cluster is IC 2602.
  | |
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Carina |
| Right ascension | 10h 44m 06.91549s[1] |
| Declination | −63° 57′ 39.8535″[1] |
| Apparent magnitude (V) | 4.85[2] |
| Characteristics | |
| Spectral type | B3/5Vn[3] |
| U−B color index | −0.625[2] |
| B−V color index | −0.145[2] |
| Astrometry | |
| Parallax (π) | 6.63 ± 0.18[1] mas |
| Distance | 490 ± 10 ly (151 ± 4 pc) |
| Absolute magnitude (MV) | −1.176[4] |
| Details | |
| Luminosity | 847[4] L☉ |
| Surface gravity (log g) | 4.015[5] cgs |
| Temperature | 16,140[4] K |
| Rotational velocity (v sin i) | 310[5] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 93607 is a B4 main sequence star, notable for "nebulous" absorption lines caused by its rapid rotation.[3] It is included on a list of the least variable stars amongst those observed by the Hipparcos satellite, with a possible variation less than 0.01 magnitudes.[6]
References
- 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.
- Mermilliod, J.-C (1986). "Compilation of Eggen's UBV data, transformed to UBV (unpublished)". Catalogue of Eggen's UBV Data. Bibcode:1986EgUBV........0M.
- Houk, N; Cowley, A. P (1975). "University of Michigan Catalogue of two-dimensional spectral types for the HD stars. Volume I. Declinations -90_ to -53_ƒ0". University of Michigan Catalogue of two-dimensional spectral types for the HD stars. Volume I. Declinations -90_ to -53_ƒ0. Bibcode:1975mcts.book.....H.
- Silaj, J; Landstreet, J. D (2014). "Accurate age determinations of several nearby open clusters containing magnetic Ap stars". Astronomy & Astrophysics. 566: A132. arXiv:1407.4531. Bibcode:2014A&A...566A.132S. doi:10.1051/0004-6361/201321468.
- David, Trevor J; Hillenbrand, Lynne A (2015). "The Ages of Early-type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets". The Astrophysical Journal. 804 (2): 146. arXiv:1501.03154. Bibcode:2015ApJ...804..146D. doi:10.1088/0004-637X/804/2/146.
- Adelman, S. J (2001). "Research Note Hipparcos photometry: The least variable stars". Astronomy and Astrophysics. 367: 297. Bibcode:2001A&A...367..297A. doi:10.1051/0004-6361:20000567.
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