Astronomy:Celaeno (star)
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| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Taurus |
| Right ascension | 03h 44m 48.2154s[1] |
| Declination | +24° 17′ 22.093″[1] |
| Apparent magnitude (V) | +5.448 |
| Characteristics | |
| Spectral type | B7IV[2] |
| U−B color index | –0.33[3] |
| B−V color index | –0.046[3] |
| Astrometry | |
| Radial velocity (Rv) | +2.9[4] km/s |
| Proper motion (μ) | RA: 20.73[1] mas/yr Dec.: –44.00[1] mas/yr |
| Parallax (π) | 7.53 ± 1.23[5] mas |
| Distance | approx. 430 ly (approx. 130 pc) |
| Absolute magnitude (MV) | −0.76[6] |
| Details | |
| Mass | 4.0[6] M☉ |
| Radius | 4.4[7] R☉ |
| Luminosity | 344[6] L☉ |
| Surface gravity (log g) | 3.9[6] cgs |
| Temperature | 12,800[6] K |
| Rotational velocity (v sin i) | 185[8] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
Celaeno /səˈliːnoʊ/,[10] designated 16 Tauri, is a star in the constellation of Taurus and a member of the Pleiades open star cluster (M45) of stars.
Properties
16 Tauri is a blue-white B-type subgiant with an apparent magnitude of +5.45. It is approximately 430 light years from the Sun;[5] about the same distance as the Pleiades. The interstellar extinction of this star is fairly small at 0.05 magnitudes.[11] The projected rotational velocity of the equator is 185 km/s.[8] It is over four times the radius of the Sun and has a surface temperature of 12,800 K.[6][7]
Nomenclature
16 Tauri is the star's Flamsteed designation.
It bore the traditional named Celaeno (or Celeno) and was called the "Lost Pleiad" by Theon the Younger.[12] Celaeno was one of the Pleiades sisters in Greek mythology. In 2016, the International Astronomical Union organized a Working Group on Star Names (WGSN)[13] to catalogue and standardize proper names for stars. The WGSN approved the name Celaeno for this star on 21 August 2016 and it is now so entered in the IAU Catalog of Star Names.[14]
Namesake
USS Celeno (AK-76) was a United States Navy Crater class cargo ship named after the star.
References
- ↑ 1.0 1.1 1.2 1.3 Perryman, M. A. C. et al. (1997), "The Hipparcos Catalogue", Astronomy & Astrophysics 323: L49–L52, Bibcode: 1997A&A...323L..49P
- ↑ Lesh, Janet Rountree (1968). "The Kinematics of the Gould Belt: An Expanding Group?". Astrophysical Journal Supplement 17: 371. doi:10.1086/190179. Bibcode: 1968ApJS...17..371L.
- ↑ 3.0 3.1 Johnson, H. L.; Morgan, W. W. (1953). "Fundamental stellar photometry for standards of spectral type on the revised system of the Yerkes spectral atlas". Astrophysical Journal 117: 313–352. doi:10.1086/145697. Bibcode: 1953ApJ...117..313J.
- ↑ Wilson, Ralph Elmer (1953). "General catalogue of stellar radial velocities". Carnegie Institute Washington D.C. Publication (Carnegie Institution of Washington). Bibcode: 1953GCRV..C......0W.
- ↑ 5.0 5.1 Makarov, Valeri V. (December 2002). "Computing the Parallax of the Pleiades from the Hipparcos Intermediate Astrometry Data: An Alternative Approach". The Astronomical Journal 124 (6): 3299–3304. doi:10.1086/344683. Bibcode: 2002AJ....124.3299M.
- ↑ 6.0 6.1 6.2 6.3 6.4 6.5 Wolff, Sidney C. (December 1990). "Luminosities, masses, and ages of B-type stars". Astronomical Journal 100: 1994. doi:10.1086/115654. Bibcode: 1990AJ....100.1994W.
- ↑ 7.0 7.1 "Catalogue of Stellar Diameters (CADARS) (Pasinetti-Fracassini+ 2001)". VizieR On-line Data Catalog: II/224. November 2000. http://cdsarc.u-strasbg.fr/cgi-bin/qcat?II/224.
- ↑ 8.0 8.1 Abt, Helmut A.; Levato, Hugo; Grosso, Monica (July 11–17, 2002). "Rotational velocities of B stars". in K. S. Cheng. Xi'an, China: Kluwer Academic Publishers. pp. 165–172. ISBN 1-4020-1683-2. Vizier table J/ApJ/573/359.
- ↑ "Celeno". SIMBAD. Centre de Données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=celeno.
- ↑ Davis, George A. (1944). "The pronunciations, derivations, and meanings of a selected list of star names". Popular Astronomy 52: 8–30. Bibcode: 1944PA.....52....8D. http://adsbit.harvard.edu/full/1944PA.....52....8D.
- ↑ Breger, M. (August 1984). "The Pleiades cluster. I - Polarization and reddening of the brighter stars". Astronomy and Astrophysics 137 (1): 145–148. Bibcode: 1984A&A...137..145B.
- ↑ Allen, Richard Hinckley (1899). Star-names and their meanings. G. E. Stechert. p. 407. https://archive.org/details/bub_gb_5xQuAAAAIAAJ. Retrieved 2009-10-10.
- ↑ IAU Working Group on Star Names (WGSN), International Astronomical Union, https://www.iau.org/science/scientific_bodies/working_groups/280/, retrieved 22 May 2016.
- ↑ "IAU Catalog of Star Names". http://www.pas.rochester.edu/~emamajek/WGSN/IAU-CSN.txt.
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