Astronomy:V352 Aurigae
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Auriga |
| Right ascension | 06h 55m 14.65813s[2] |
| Declination | +43° 54′ 36.1052″[2] |
| Apparent magnitude (V) | 6.16[3] (6.13 – 6.18)[4] |
| Characteristics | |
| Spectral type | A9III[5] |
| U−B color index | 0.21[6] |
| B−V color index | 0.314±0.015[3] |
| Variable type | δ Sct[4] |
| Astrometry | |
| Radial velocity (Rv) | −7.0±2.9[3] km/s |
| Proper motion (μ) | RA: +1.795[2] mas/yr Dec.: −6.908[2] mas/yr |
| Parallax (π) | 3.3542 ± 0.0361[2] mas |
| Distance | 970 ± 10 ly (298 ± 3 pc) |
| Absolute magnitude (MV) | −1.26[3] |
| Details | |
| Mass | 1.57[7] M☉ |
| Radius | 12.86+8.99 −2.03[8] R☉ |
| Luminosity | 242.2±7.7[8] L☉ |
| Surface gravity (log g) | 3.79[9] cgs |
| Temperature | 6,350+568 −1,479[8] K |
| Metallicity [Fe/H] | 0.00[9] dex |
| Rotational velocity (v sin i) | 36[10] km/s |
| Age | 998[11] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
V352 Aurigae is a variable star in the northern constellation of Auriga. It dimly visible to the naked eye with an apparent visual magnitude that ranges from 6.13 down to 6.18. According to the Bortle scale, it is faintly visible to the naked eye from dark rural skies. The star is located at a distance of approximately 970 light years from the Sun based on parallax,[8] but is drifting closer with a radial velocity of −7 km/s.[3]
The stellar classification of this star is A9III,[5] which matches an A-type star with the luminosity class of an evolved giant star. It is listed as a spectral standard for stars of that class,[5] although other researchers have classed it as F0II-III[13] or F1IV.[14]
V352 Aurigae is a low amplitude Delta Scuti variable with a period of 4.1 hours,[4] which means the variability is caused by the rotation of the host star in combination with localized regions of activity.[15] The star has 13 times the radius of the Sun and is radiating 242 times the Sun's luminosity from its photosphere at an effective temperature of 6,350 K.[8] It is unusually luminous for a Delta Scuti variable.[16] It is also suspected of being a chemically peculiar star of the Delta Delphini type,[17] although the anomalies are not pronounced.[16]
References
- ↑ Kurtz, D. W. (December 1977), "HR 2557: a luminous delta Scuti star", Publications of the Astronomical Society of the Pacific 89: 941–944, doi:10.1086/130252, Bibcode: 1977PASP...89..941K.
- ↑ 2.0 2.1 2.2 2.3 2.4 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.
- ↑ 3.0 3.1 3.2 3.3 3.4 Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters 38 (5): 331, doi:10.1134/S1063773712050015, Bibcode: 2012AstL...38..331A.
- ↑ 4.0 4.1 4.2 Samus, N. N. et al. (2017), "General Catalogue of Variable Stars", Astronomy Reports, 5.1 61 (1): 80–88, doi:10.1134/S1063772917010085, Bibcode: 2017ARep...61...80S.
- ↑ 5.0 5.1 5.2 Morgan, W. W.; Abt, H. A. (February 1972), "The spectral classification of the F stars of intermediate luminosity", Astronomical Journal 77: 35–37, doi:10.1086/111242, Bibcode: 1972AJ.....77...35M.
- ↑ Mendoza, E. E.; Gomez, V. T.; Gonzalez, S. (June 1978), "UBVRI photometry of 225 AM stars", Astronomical Journal 83: 606–614, doi:10.1086/112242, Bibcode: 1978AJ.....83..606M.
- ↑ Stassun, Keivan G.; Oelkers, Ryan J.; Pepper, Joshua; Paegert, Martin; De Lee, Nathan; Torres, Guillermo; Latham, David W.; Charpinet, Stéphane et al. (2018), "The TESS Input Catalog and Candidate Target List", The Astronomical Journal 156 (3): 102, doi:10.3847/1538-3881/aad050, Bibcode: 2018AJ....156..102S.
- ↑ 8.0 8.1 8.2 8.3 8.4 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.
- ↑ 9.0 9.1 Koleva, M.; Vazdekis, A. (February 2012), "Stellar population models in the UV. I. Characterisation of the New Generation Stellar Library", Astronomy & Astrophysics 538: A143, doi:10.1051/0004-6361/201118065, Bibcode: 2012A&A...538A.143K.
- ↑ Royer, F. et al. (2002), "Rotational velocities of A-type stars in the northern hemisphere. II. Measurement of v sin i in the northern hemisphere", Astronomy and Astrophysics 393 (3): 897–911, doi:10.1051/0004-6361:20020943, Bibcode: 2002A&A...393..897R.
- ↑ Gontcharov, G. A. (2012), "Dependence of kinematics on the age of stars in the solar neighborhood", Astronomy Letters 38 (12): 771–782, doi:10.1134/S1063773712120031, Bibcode: 2012AstL...38..771G.
- ↑ "V352 Aur". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=V352+Aur.
- ↑ Gray, R. O; Napier, M. G; Winkler, L. I (2001), "The Physical Basis of Luminosity Classification in the Late A-, F-, and Early G-Type Stars. I. Precise Spectral Types for 372 Stars", The Astronomical Journal 121 (4): 2148, doi:10.1086/319956, Bibcode: 2001AJ....121.2148G.
- ↑ Abt, Helmut A.; Morrell, Nidia I. (July 1995), "The Relation between Rotational Velocities and Spectral Peculiarities among A-Type Stars", The Astrophysical Journal Supplement Series 99: 135, doi:10.1086/192182, Bibcode: 1995ApJS...99..135A.
- ↑ Bush, Tabitha C.; Hintz, Eric G. (September 2008), "Rotational Velocity Determinations for 118 delta Scuti Variables", The Astronomical Journal 136 (3): 1061–1066, doi:10.1088/0004-6256/136/3/1061, Bibcode: 2008AJ....136.1061B.
- ↑ 16.0 16.1 Kurtz, D. W. (1977), "HR 2557 : A luminous del SCT star", Publications of the Astronomical Society of the Pacific 89: 941, doi:10.1086/130252, Bibcode: 1977PASP...89..941K.
- ↑ Renson, P.; Manfroid, J. (2009), "Catalogue of Ap, HGMN and Am stars", Astronomy and Astrophysics 498 (3): 961, doi:10.1051/0004-6361/200810788, Bibcode: 2009A&A...498..961R.
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