Astronomy:HD 1606
Observation data Equinox J2000.0]] (ICRS) | |
---|---|
Constellation | Andromeda |
Right ascension | 00h 20m 24.40107s[1] |
Declination | +30° 56′ 08.2099″[1] |
Apparent magnitude (V) | 5.869[2] |
Characteristics | |
Evolutionary stage | main sequence[3] |
Spectral type | B7V[4] |
U−B color index | −0.45[5] |
B−V color index | −0.10[5] |
Variable type | Suspected[6] |
Astrometry | |
Radial velocity (Rv) | 3.8[7] km/s |
Proper motion (μ) | RA: 15.734±0.159[1] mas/yr Dec.: −2.957±0.125[1] mas/yr |
Parallax (π) | 5.5900 ± 0.1069[1] mas |
Distance | 580 ± 10 ly (179 ± 3 pc) |
Absolute magnitude (MV) | −0.5[8] |
Details | |
Mass | 3.75±0.08[3] M☉ |
Radius | 2.9[9] R☉ |
Luminosity | 245+36 −31[3] L☉ |
Surface gravity (log g) | 3.988±0.017[10] cgs |
Temperature | 13,186±100[10] K |
Rotational velocity (v sin i) | 113±8[10] km/s |
Other designations | |
Database references | |
SIMBAD | data |
HD 1606 is a single[12] star in the northern constellation of Andromeda, positioned a few degrees to the northeast of the bright star Alpheratz. It has a blue-white hue and is dimly visible to the naked eye with an apparent visual magnitude of 5.87.[2] Although it is suspected of variability, none has been conclusively found.[13] The star is located at a distance of approximately 580 light-years (179 parsecs) from the Sun based on parallax,[1] and is drifting further away with a radial velocity of +4 km/s.[7] It has an absolute magnitude of −0.5.[8]
This is a B-type main-sequence star with a stellar classification of B7V,[4] which means it is currently generating energy through hydrogen fusion at its core. It has 3.75[3] times the mass of the Sun and a fairly high rate of spin, showing a projected rotational velocity of 113 km/s.[10] The star is radiating 245[3] times the luminosity of the Sun from its photosphere at an effective temperature of 13,186 K.[10]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G. Gaia DR2 record for this source at VizieR.
- ↑ 2.0 2.1 Høg, E. et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics 355: L27. Bibcode: 2000A&A...355L..27H.
- ↑ 3.0 3.1 3.2 3.3 3.4 Zorec, J. et al. (2012). "Rotational velocities of A-type stars. IV. Evolution of rotational velocities". Astronomy and Astrophysics 537: A120. doi:10.1051/0004-6361/201117691. Bibcode: 2012A&A...537A.120Z.
- ↑ 4.0 4.1 Cowley, A. (1972). "Spectral classification of the bright B8 stars". The Astronomical Journal 77: 750. doi:10.1086/111348. Bibcode: 1972AJ.....77..750C.
- ↑ 5.0 5.1 Hamdy, M. A. et al. (1993). "A catalogue of spectral classification and photometric data of B-type stars". Astrophysics and Space Science 203 (1): 53–107. doi:10.1007/BF00659414. Bibcode: 1993Ap&SS.203...53H.
- ↑ Samus, N. N. et al. (2009). "General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S 1. Bibcode: 2009yCat....102025S.
- ↑ 7.0 7.1 Wilson, R. E. (1953). "General Catalogue of Stellar Radial Velocities". Carnegie Institute Washington D.C. Publication (Carnegie Institute of Washington D.C.). Bibcode: 1953GCRV..C......0W.
- ↑ 8.0 8.1 Eggen, O. J. (1977). "Is star formation bimodal ? II. The nearest early-type stars". Publications of the Astronomical Society of the Pacific 89: 187. doi:10.1086/130099. Bibcode: 1977PASP...89..187E.
- ↑ Pasinetti Fracassini, L. E. et al. (2001). "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)". Astronomy and Astrophysics 367 (2): 521. doi:10.1051/0004-6361:20000451. Bibcode: 2001A&A...367..521P.
- ↑ 10.0 10.1 10.2 10.3 10.4 Huang, Wenjin et al. (2010). "A Stellar Rotation Census of B Stars: From Zams to Tams". The Astrophysical Journal 722 (1): 605–619. doi:10.1088/0004-637X/722/1/605. Bibcode: 2010ApJ...722..605H.
- ↑ "HD 1606". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+1606.
- ↑ Eggleton, P. P.; Tokovinin, A. A. (2008). "A catalogue of multiplicity among bright stellar systems". Monthly Notices of the Royal Astronomical Society 389 (2): 869. doi:10.1111/j.1365-2966.2008.13596.x. Bibcode: 2008MNRAS.389..869E.
- ↑ BSJ (4 January 2010). "NSV 128". AAVSO Website. American Association of Variable Star Observers. http://www.aavso.org/vsx/index.php?view=detail.top&oid=38752.
![]() | Original source: https://en.wikipedia.org/wiki/HD 1606.
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