HD 35520
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Auriga[1] |
| Right ascension | 05h 26m 48.80400s[2] |
| Declination | +34° 23′ 30.5024″[2] |
| Apparent magnitude (V) | 5.92[1] |
| Characteristics | |
| Spectral type | A1 III[3] or A1p[4] |
| B−V color index | 0.138±0.004[1] |
| Astrometry | |
| Radial velocity (Rv) | +8.3±10.0[1] km/s |
| Proper motion (μ) | RA: +1.716[2] mas/yr Dec.: −7.380[2] mas/yr |
| Parallax (π) | 1.4550±0.0919 mas[2] |
| Distance | 2,200 ± 100 ly (690 ± 40 pc) |
| Details | |
| Mass | 2.9[5] M☉ |
| Radius | 23[6] R☉ |
| Luminosity | 2,686[6] L☉ |
| Surface gravity (log g) | 3.12[5] cgs |
| Temperature | 8,761[6] K |
| Rotational velocity (v sin i) | 80[3] km/s |
| Other designations | |
| BD+34°1040, GC 6689, HD 35520, HIP 25471, HR 1795, SAO 58028[7] | |
| Database references | |
| SIMBAD | data |
HD 35520 is a single[8] 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.[1] The distance to this star is approximately 2,200 light years based on parallax.[2] The radial velocity for the star is, as yet, poorly constrained.[1]
This is an Ap star, a type of chemically peculiar 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.[9] It has been classed as a shell star[10] and has a relatively high projected rotational velocity for its class of 80 km/s.[3] The star has expanded to 23 times the radius of the Sun and it is radiating 2,686 times the Sun's luminosity from its enlarged photosphere at an effective temperature of 8,761 K.[6]
References
[edit]- ^ a b c d e f 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. XHIP record for this object at VizieR.
- ^ a b c d e f 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 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.
- ^ a b Khalatyan, A.; Anders, F.; Chiappini, C.; Queiroz, A. B. A.; Nepal, S.; Dal Ponte, M.; Jordi, C.; Guiglion, G.; Valentini, M.; Torralba Elipe, G.; Steinmetz, M.; Pantaleoni-González, M.; Malhotra, S.; Jiménez-Arranz, Ó.; Enke, H.; Casamiquela, L.; Ardèvol, J. (2024). "Transferring spectroscopic stellar labels to 217 million Gaia DR3 XP stars with SHBoost". Astronomy and Astrophysics. 691: A98. arXiv:2407.06963. Bibcode:2024A&A...691A..98K. doi:10.1051/0004-6361/202451427.
- ^ a b c d Fetherolf, Tara; Pepper, Joshua; Simpson, Emilie; Kane, Stephen R.; Močnik, Teo; English, John Edward; Antoci, Victoria; Huber, Daniel; Jenkins, Jon M.; Stassun, Keivan; Twicken, Joseph D.; Vanderspek, Roland; Winn, Joshua N. (2023). "Variability Catalog of Stars Observed during the TESS Prime Mission". The Astrophysical Journal Supplement Series. 268 (1): 4. arXiv:2208.11721. Bibcode:2023ApJS..268....4F. doi:10.3847/1538-4365/acdee5.
- ^ "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.
