Astronomy:n Herculis
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Short description: Star in the Hercules constellation
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Hercules[1] |
| Right ascension | 16h 32m 35.7s[2] |
| Declination | +5° 31′ 16″[2] |
| Apparent magnitude (V) | 5.63[3] |
| Characteristics | |
| Evolutionary stage | main sequence[4] |
| Spectral type | B9.5III[5] |
| U−B color index | −0.18[6] |
| B−V color index | −0.06[6] |
| Astrometry | |
| Radial velocity (Rv) | −23.38±0.21[2] km/s |
| Proper motion (μ) | RA: +15.556[2] mas/yr Dec.: −0.282[2] mas/yr |
| Parallax (π) | 8.5519 ± 0.1394[2] mas |
| Distance | 381 ± 6 ly (117 ± 2 pc) |
| Absolute magnitude (MV) | +0.27[1] |
| Details | |
| Mass | 2.75[7] M☉ |
| Radius | 2.94[7] R☉ |
| Luminosity | 99[7] L☉ |
| Surface gravity (log g) | 3.94[7] cgs |
| Temperature | 10,623[7] K |
| Rotational velocity (v sin i) | 9.6[8] km/s |
| Age | 237[9] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
n Herculis, also known as 28 Herculis, is a mercury-manganese star[11] in the constellation Hercules at a distance of approximately 381 light-years (about 117 parsecs) from the Sun. The apparent magnitude of the star is +5.6. Once in the constellation Ophiuchus, it was also catalogued as 11 Ophiuchi.[10]
References
- ↑ 1.0 1.1 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331. doi:10.1134/S1063773712050015. Bibcode: 2012AstL...38..331A XHIP record for this object at VizieR.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940 Gaia DR3 record for this source at VizieR.
- ↑ Ducati, J. R. (2002). "VizieR Online Data Catalog: Stellar Photometry in Johnson's 11-color system (Ducati, 2002)". Vizier Online Data Catalog. Bibcode: 2002yCat.2237....0D.
- ↑ Takeda, Yoichi; Takada-Hidai, Masahide; Jugaku, Jun; Sakaue, Akihiko; Sadakane, Kozo (1999). "Oxygen 6156-8 Angstroms Triplet in Chemically Peculiar Stars of the Upper Main Sequence: Do HGMN Stars Show an Oxygen Anomaly?". Publications of the Astronomical Society of Japan 51: 961. doi:10.1093/pasj/51.6.961. Bibcode: 1999PASJ...51..961T.
- ↑ "VizieR Detailed Page". http://vizier.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=5050&-corr=PK=HR&-out.max=9999&HR=6158. Retrieved 2012-07-13.
- ↑ 6.0 6.1 Hamdy, M. A.; Abo Elazm, M. S.; Saad, S. M. (1993). "A Catalogue of Spectral Classification and Photometric Data of B-Type Stars". Astrophysics and Space Science 203 (1): 53. doi:10.1007/BF00659414. Bibcode: 1993Ap&SS.203...53H.
- ↑ 7.0 7.1 7.2 7.3 7.4 Stassun, Keivan G. et al. (2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal 158 (4): 138. doi:10.3847/1538-3881/ab3467. Bibcode: 2019AJ....158..138S.
- ↑ Takeda, Yoichi; Han, Inwoo; Kang, Dong-Il; Lee, Byeong-Cheol; Kim, Kang-Min (2019). "Compositional differences between the component stars of eclipsing close binary systems showing chemical peculiarities". Monthly Notices of the Royal Astronomical Society 485 (1): 1067. doi:10.1093/mnras/stz449. Bibcode: 2019MNRAS.485.1067T.
- ↑ Gontcharov, G. A. (2012). "Dependence of kinematics on the age of stars in the solar neighborhood". Astronomy Letters 38 (12): 771. doi:10.1134/S1063773712120031. Bibcode: 2012AstL...38..771G.
- ↑ 10.0 10.1 "28 Herculis". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=28+Herculis.
- ↑ Ghazaryan, S.; Alecian, G. (2016). "Statistical analysis from recent abundance determinations in HGMN stars". Monthly Notices of the Royal Astronomical Society 460 (2): 1912. doi:10.1093/mnras/stw911. Bibcode: 2016MNRAS.460.1912G. https://hal.science/hal-02338640.
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