Astronomy:HD 29573
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Eridanus |
| Right ascension | 04h 38m 53.55015s[1] |
| Declination | −12° 07′ 23.0681″[1] |
| Apparent magnitude (V) | 4.99[2] (5.19 + 7.22)[3] |
| Characteristics | |
| Spectral type | A0 V (A1 + F2)[2] |
| B−V color index | 0.074±0.003[4] |
| Astrometry | |
| Radial velocity (Rv) | +2.9±0.8[5] km/s |
| Proper motion (μ) | RA: −60.614[1] mas/yr Dec.: −16.417[1] mas/yr |
| Parallax (π) | 14.2348 ± 0.3656[1] mas |
| Distance | 229 ± 6 ly (70 ± 2 pc) |
| Absolute magnitude (MV) | 0.73[4] |
| Orbit[2] | |
| Period (P) | 40.9±1.386 yr |
| Semi-major axis (a) | 0.2844±0.0055″ |
| Eccentricity (e) | 0.759±0.180 |
| Inclination (i) | 75.5±2.2° |
| Longitude of the node (Ω) | 152.0±1.8° |
| Periastron epoch (T) | 2003.805 |
| Argument of periastron (ω) (secondary) | 284.1±11.0° |
| Details | |
| HD 29573 A | |
| Mass | 2.28[2] M☉ |
| Luminosity | 51.8+4.6 −4.3[6] L☉ |
| Temperature | 8,892+103 −102[6] K |
| Rotational velocity (v sin i) | 27[6] km/s |
| HD 29573 B | |
| Mass | 1.56[2] M☉ |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 29573 is a binary star[3] system in the constellation Eridanus. It has a combined apparent visual magnitude of 4.99,[2] making it visible to the naked eye. Based upon an annual parallax shift of 14.23 mas,[1] it is located 229 light years from the Sun. The system is moving further away from Earth with a heliocentric radial velocity of +3 km/s.[5]
The binary nature of this system was discovered through observations made with the Hipparcos spacecraft. The pair orbit each other with a period of 41 years and an eccentricity of 0.8.[2] The magnitude 5.19[3] primary component has a class of A1,[2] 2.28[2] times the mass of the Sun, and is a suspected chemically peculiar star.[8] The secondary has magnitude 7.22,[3] 1.56[2] times the Sun's mass, and a class of F2.[2] The system has a possible infrared excess[9] due to circumstellar dust.[10]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940 Gaia DR3 record for this source at VizieR.
- ↑ 2.00 2.01 2.02 2.03 2.04 2.05 2.06 2.07 2.08 2.09 2.10 Cvetković, Z. et al. (March 2014), "Orbits for Eight Hipparcos Double Stars", The Astronomical Journal 147 (3): 9, doi:10.1088/0004-6256/147/3/62, 62, Bibcode: 2014AJ....147...62C.
- ↑ 3.0 3.1 3.2 3.3 Eggleton, P. P.; Tokovinin, A. A. (2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society 389 (2): 869, doi:10.1111/j.1365-2966.2008.13596.x, Bibcode: 2008MNRAS.389..869E.
- ↑ 4.0 4.1 Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters 38 (5): 331, doi:10.1134/S1063773712050015, Bibcode: 2012AstL...38..331A.
- ↑ 5.0 5.1 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, doi:10.1051/0004-6361/201219219, A61, Bibcode: 2012A&A...546A..61D.
- ↑ 6.0 6.1 6.2 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.
- ↑ "HD 29573". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+29573.
- ↑ 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.
- ↑ Shylaja, B. S.; Ashok, N. M. (June 2002), "IR observations of Am stars", Bulletin of the Astronomical Society of India 30: 491–500, Bibcode: 2002BASI...30..491S.
- ↑ Kamp, I. et al. (June 2002), "Do dusty A stars exhibit accretion signatures in their photospheres?", Astronomy and Astrophysics 388 (3): 978–984, doi:10.1051/0004-6361:20020493, Bibcode: 2002A&A...388..978K.
 |  |
