10 Boötis is a suspected astrometric binary[8] star system in the northern constellation of Boötes,[7] located around 528 light years away from the Sun. It is visible to the naked eye under suitable viewing conditions as a dim, white-hued star with an apparent visual magnitude of 5.76.[2] Its magnitude is diminished by an extinction of 0.17 due to interstellar dust.[9] This system is moving away from the Earth with a heliocentric radial velocity of +6 km/s.[5]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Boötes |
| Right ascension | 13h 58m 38.92101s[1] |
| Declination | +21° 41′ 46.3302″[1] |
| Apparent magnitude (V) | 5.76[2] |
| Characteristics | |
| Evolutionary stage | main sequence[3] |
| Spectral type | A0 Vs[4] |
| B−V color index | −0.002±0.004[2] |
| Astrometry | |
| Radial velocity (Rv) | +6.1±2.9[5] km/s |
| Proper motion (μ) | RA: −3.641[1] mas/yr Dec.: −42.535[1] mas/yr |
| Parallax (π) | 6.1741 ± 0.1059 mas |
| Distance | 528 ± 9 ly (162 ± 3 pc) |
| Absolute magnitude (MV) | −0.01[2] |
| Details | |
| Mass | 2.87±0.14[3] M☉ |
| Radius | 2.7[6] R☉ |
| Luminosity | 113+32 −25[3] L☉ |
| Temperature | 9441±108[3] K |
| Rotational velocity (v sin i) | 75[3] km/s |
| Age | 337[2] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
The visible component is an ordinary A-type main-sequence star with a stellar classification of A0 Vs,[4] where the 's' notation indicates "sharp" absorption lines. It is 337[2] million years old with a moderate rotation rate, showing a projected rotational velocity of 75 km/s.[3] The star has 2.87[3] times the mass of the Sun and about 2.7[6] times the Sun's radius. It is radiating 113[3] times the Sun's luminosity from its photosphere at an effective temperature of 9,441 K.[3]
References edit
- ^ a b c d 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 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, S2CID 119257644.
- ^ a b c d e f g h i Zorec, J.; et al. (2012), "Rotational velocities of A-type stars. IV. Evolution of rotational velocities", Astronomy and Astrophysics, 537: A120, arXiv:1201.2052, Bibcode:2012A&A...537A.120Z, doi:10.1051/0004-6361/201117691, S2CID 55586789
- ^ 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 de Bruijne, J. H. J.; Eilers, A.-C. (October 2012), "Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project", Astronomy & Astrophysics, 546: 14, arXiv:1208.3048, Bibcode:2012A&A...546A..61D, doi:10.1051/0004-6361/201219219, S2CID 59451347, A61.
- ^ a b Pasinetti Fracassini, L. E.; et al. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)", Astronomy and Astrophysics, 367 (2) (Third ed.): 521–524, arXiv:astro-ph/0012289, Bibcode:2001A&A...367..521P, doi:10.1051/0004-6361:20000451, S2CID 425754.
- ^ a b "10 Boo". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved April 25, 2019.
- ^ 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.
- ^ Gontcharov, G. A. (November 2012), "Spatial distribution and kinematics of OB stars", Astronomy Letters, 38 (11): 694–706, arXiv:1606.09028, Bibcode:2012AstL...38..694G, doi:10.1134/S1063773712110035, S2CID 119108982.