Astronomy:HD 35520
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Auriga |
| Right ascension | 05h 26m 48.80400s[1] |
| Declination | +34° 23′ 30.5024″[1] |
| Apparent magnitude (V) | 5.92[2] |
| Characteristics | |
| Spectral type | A1 III[3] or A1p[4] |
| B−V color index | 0.138±0.004[2] |
| Astrometry | |
| Radial velocity (Rv) | +8.3±10.0[2] km/s |
| Proper motion (μ) | RA: +1.716[1] mas/yr Dec.: −7.380[1] mas/yr |
| Parallax (π) | 1.4550 ± 0.0919[1] mas |
| Distance | 2,200 ± 100 ly (690 ± 40 pc) |
| Details | |
| Radius | 23.05+0.68 −0.41[1] R☉ |
| Luminosity | 1,635±126[1] L☉ |
| Temperature | 7,645+246 −110[1] K |
| Rotational velocity (v sin i) | 80[3] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 35520 is a single[6] star in the northern constellation of Auriga. It has a white hue and is dimly visible to the naked eye with an apparent visual magnitude of 5.92.[2] The distance to this star is approximately 2,200 light years based on parallax.[1] The radial velocity for the star is, as yet, poorly constrained.[2]
This is an aging chemically peculiar star, or Ap star, in the giant stage of its evolution, with a stellar classifications of A1 III[3] and A1p.[4] The spectrum displays abundance anomalies of helium and silicon.[7] It has been classed as a shell star[8] and has a relatively high projected rotational velocity for its class of 80 km/s.[3] The star has expanded to 23[1] times the radius of the Sun and it is radiating 1,635[1] times the Sun's luminosity from its enlarged photosphere at an effective temperature of 7,645 K.[1]
References
- ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 1.11 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 2.2 2.3 2.4 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331. doi:10.1134/S1063773712050015. Bibcode: 2012AstL...38..331A.
- ↑ 3.0 3.1 3.2 3.3 Abt, Helmut A.; Morrell, Nidia I. (1995). "The Relation between Rotational Velocities and Spectral Peculiarities among A-Type Stars". Astrophysical Journal Supplement 99: 135. doi:10.1086/192182. Bibcode: 1995ApJS...99..135A.
- ↑ 4.0 4.1 Cowley, A. et al. (April 1969). "A study of the bright A stars. I. A catalogue of spectral classifications". Astronomical Journal 74: 375–406. doi:10.1086/110819. Bibcode: 1969AJ.....74..375C.
- ↑ "HD 35520". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+35520.
- ↑ Eggleton, P. P.; Tokovinin, A. A. (September 2008). "A catalogue of multiplicity among bright stellar systems". Monthly Notices of the Royal Astronomical Society 389 (2): 869–879. doi:10.1111/j.1365-2966.2008.13596.x. Bibcode: 2008MNRAS.389..869E.
- ↑ Renson, P.; Manfroid, J. (May 2009). "Catalogue of Ap, HgMn and Am stars". Astronomy and Astrophysics 498 (3): 961–966. doi:10.1051/0004-6361/200810788. Bibcode: 2009A&A...498..961R.
- ↑ Jaschek, C.; Jaschek, M.; Andrillat, Y.; Egret, D. (December 1991). "Anomalous infrared emitters among A-type stars.". Astronomy and Astrophysics 252: 229. Bibcode: 1991A&A...252..229J.
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