HD 35520
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| 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 mas[1] |
| 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
[edit]- ^ a b c d e f g h i j k l Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- ^ a b c d e Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. S2CID 119257644.
- ^ a b c d Abt, Helmut A.; Morrell, Nidia I. (1995). "The Relation between Rotational Velocities and Spectral Peculiarities among A-Type Stars". Astrophysical Journal Supplement. 99: 135. Bibcode:1995ApJS...99..135A. doi:10.1086/192182.
- ^ a b Cowley, A.; et al. (April 1969). "A study of the bright A stars. I. A catalogue of spectral classifications". Astronomical Journal. 74: 375–406. Bibcode:1969AJ.....74..375C. doi:10.1086/110819.
- ^ "HD 35520". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-12-16.
- ^ 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. arXiv:0806.2878. Bibcode:2008MNRAS.389..869E. doi:10.1111/j.1365-2966.2008.13596.x. S2CID 14878976.
- ^ Renson, P.; Manfroid, J. (May 2009). "Catalogue of Ap, HgMn and Am stars". Astronomy and Astrophysics. 498 (3): 961–966. Bibcode:2009A&A...498..961R. doi:10.1051/0004-6361/200810788.
- ^ 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.
