Astronomy:HD 171301
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Lyra |
| Right ascension | 18h 32m 49.95782s[1] |
| Declination | +30° 33′ 15.14853″[1] |
| Apparent magnitude (V) | 5.47[2] + 12.7[3] |
| Characteristics | |
| Spectral type | B8IV[4] or B8V[5] |
| U−B color index | −0.463[2] |
| B−V color index | −0.077±0.003[2] |
| Astrometry | |
| Radial velocity (Rv) | −10.3±1.5[6] km/s |
| Proper motion (μ) | RA: 13.229[1] mas/yr Dec.: 11.581[1] mas/yr |
| Parallax (π) | 9.3894 ± 0.1103[1] mas |
| Distance | 347 ± 4 ly (107 ± 1 pc) |
| Absolute magnitude (MV) | 0.27[2] |
| Details | |
| A | |
| Mass | 3.12±0.03[7] M☉ |
| Radius | 2.7±0.1[8] R☉ |
| Luminosity | 123.8+7.7 −7.1[7] L☉ |
| Temperature | 11,695±81[7] K |
| Metallicity [Fe/H] | +0.08±0.07[9] dex |
| Rotational velocity (v sin i) | 36±2[5] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 171301 is a suspected binary star[11] system in the northern constellation of Lyra. It has not been well-studied.[5] The brighter member of the pair, designated component A,[3] has a blue-white hue and is visible to the naked eye with an apparent visual magnitude of 5.47.[2] The system is located at a distance of approximately 347 light years from the Sun based on parallax, but is drifting closer with a radial velocity of −10 km/s.[6]
The stellar classification of HD 171301 is B8IV,[4] matching a late B-type star that may be a subgiant that is evolving off the main sequence. HD 171301 appears to be a type of chemically peculiar mercury-manganese star.[5] It has an estimated mass three[7] times that of the Sun and 2.7 times the Sun's radius.[8] The star is spinning with a projected rotational velocity of 36 km/s.[5] It is radiating 124[7] times the luminosity of the Sun from its photosphere at an effective temperature of 11,695 K.[7]
Its companion, component B, is a 13th magnitude star of an unknown spectral type.[12] It was first reported by S. W. Burnham in 1891. As of 1998, it was located at an angular separation of 6.7 arcseconds from the brighter star along a position angle of 157°.[3]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 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 Mason, B. D. et al. (2014). "The Washington Visual Double Star Catalog". The Astronomical Journal 122 (6): 3466–3471. doi:10.1086/323920. Bibcode: 2001AJ....122.3466M.
- ↑ 4.0 4.1 Osawa, Kiyoteru (1959), "Spectral Classification of 533 B8-A2 Stars and the Mean Absolute Magnitude of A0 V Stars", Astrophysical Journal 130: 159, doi:10.1086/146706, Bibcode: 1959ApJ...130..159O
- ↑ 5.0 5.1 5.2 5.3 5.4 Adelman, S. J. et al. (June 2017). "Elemental abundance analyses with DAO spectrograms: XL". Astronomische Nachrichten 338 (5): 584–597. doi:10.1002/asna.201613214. Bibcode: 2017AN....338..584A.
- ↑ 6.0 6.1 Gontcharov, G. A. (November 2006). "Pulkovo Compilation of Radial Velocities for 35495 Hipparcos stars in a common system". Astronomy Letters 32 (11): 759–771. doi:10.1134/S1063773706110065. Bibcode: 2006AstL...32..759G.
- ↑ 7.0 7.1 7.2 7.3 7.4 7.5 Zorec, J.; Royer, F. (2012). "Rotational velocities of A-type stars. IV. Evolution of rotational velocities". Astronomy & Astrophysics 537: A120. doi:10.1051/0004-6361/201117691. Bibcode: 2012A&A...537A.120Z.
- ↑ 8.0 8.1 Kervella, Pierre et al. (March 2019). "Stellar and substellar companions of nearby stars from Gaia DR2. Binarity from proper motion anomaly". Astronomy & Astrophysics 623: 23. doi:10.1051/0004-6361/201834371. A72. Bibcode: 2019A&A...623A..72K.
- ↑ Gáspár, András et al. (2016). "The Correlation between Metallicity and Debris Disk Mass". The Astrophysical Journal 826 (2): 171. doi:10.3847/0004-637x/826/2/171. Bibcode: 2016ApJ...826..171G.
- ↑ "HD 171301". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+171301.
- ↑ 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.
- ↑ "CCDM J18328+3033B". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=CCDM+J18328%2B3033B.
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