HD 93607 (HR 4222) is a star in the constellation Carina. Its apparent magnitude is 4.87. Its parent cluster is IC 2602.
  | |
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Carina |
| Right ascension | 10h 46m 51.21898s[1] |
| Declination | −64° 23′ 00.5045″[1] |
| Apparent magnitude (V) | 4.87[2] |
| Characteristics | |
| Spectral type | B4V[3] |
| U−B color index | −0.655[2] |
| B−V color index | −0.15[2] |
| Astrometry | |
| Proper motion (μ) | RA: −18.590[1] mas/yr Dec.: +9.832[1] mas/yr |
| Parallax (π) | 6.6468 ± 0.0739 mas[1] |
| Distance | 491 ± 5 ly (150 ± 2 pc) |
| Absolute magnitude (MV) | −1.116[4] |
| Details | |
| Mass | 5.9[5] M☉ |
| Radius | 3.9[1] R☉ |
| Luminosity | 893[4] L☉ |
| Surface gravity (log g) | 4.098[6] cgs |
| Temperature | 16,882[4] K |
| Metallicity [Fe/H] | +0.34[1] dex |
| Rotational velocity (v sin i) | 160[6] km/s |
| Age | 17.5[5] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 93607 is a B4 main sequence star, although older spectral studies classified it as a subgiant.[7] 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.[8]
HD 93607 lies in the core region of the bright open cluster IC 3602. Its age is uncertain but around 17 million years.[5]
References
edit- ^ a b c d e f g 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.
- ^ a b c 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 "Compilation of Eggen's UBV data, transformed to UBV (unpublished)".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 -53.0°. Bibcode:1975mcts.book.....H.
- ^ a b c 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. S2CID 53370832.
- ^ a b c Tetzlaff, N; Neuhäuser, R; Hohle, M. M (2011). "A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun". Monthly Notices of the Royal Astronomical Society. 410 (1): 190–200. arXiv:1007.4883. Bibcode:2011MNRAS.410..190T. doi:10.1111/j.1365-2966.2010.17434.x. S2CID 118629873.
- ^ a b 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. S2CID 33401607.
- ^ Skiff, B. A (2014). "VizieR Online Data Catalog: Catalogue of Stellar Spectral Classifications (Skiff, 2009-2016)". VizieR On-line Data Catalog: B/Mk. Originally Published in: Lowell Observatory (October 2014). 1. Bibcode:2014yCat....1.2023S.
- ^ Adelman, S. J (2001). "Research Note Hipparcos photometry: The least variable stars". Astronomy and Astrophysics. 367: 297–298. Bibcode:2001A&A...367..297A. doi:10.1051/0004-6361:20000567.