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Star in the constellation Auriga
HD 37519 or Andrew's Star is a
star in the northern constellation
Auriga . It has a blue-white hue and is dimly visible to the naked eye with an
apparent visual magnitude of 6.04.
[2] The distance to HD 37519 is approximately 810
light years based on
parallax , but it is drifting closer with a
radial velocity of −10 km/s.
[5]
Cowley in 1972 found a
stellar classification of B9.5III-IV(p)? (Hg?) for this star,
[3] suggesting it is an
evolved
B-type star and a suspected
chemically peculiar star of the
mercury-manganese type .
[11] It is estimated to be 375 million years old and with a high rate of spin, showing a
projected rotational velocity of 195 km/s.
[9] In March 1964, a suspected flare of HD 37519 was detected that increased the star's brightness by about three magnitudes. Smaller variations of up to two magnitudes were detected a few days later,
[12] suggesting there might be a
flare star companion. However, follow-up observations failed to confirm the variability.
[13] The star is radiating 110
[8] times the
luminosity of the Sun from its
photosphere at an
effective temperature of 8,289 km/s.
[8]
References
^
a b c d e
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 Johnson, H. L.; et al. (1966), "UBVRIJKL photometry of the bright stars", Communications of the Lunar and Planetary Laboratory , 4 (99): 99,
Bibcode :
1966CoLPL...4...99J . ^
a b Cowley, A. (November 1972), "Spectral classification of the bright B8 stars", Astronomical Journal , 77 : 750–755,
Bibcode :
1972AJ.....77..750C ,
doi :
10.1086/111348 .
^ Samus, N. N.; et al. (2017), "General Catalogue of Variable Stars", Astronomy Reports , 5.1, 61 (1): 80–88,
Bibcode :
2017ARep...61...80S ,
doi :
10.1134/S1063772917010085 ,
S2CID
125853869 . ^
a b Gontcharov, G. A. (November 2006), "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system", Astronomy Letters , 32 (11): 759–771,
arXiv :
1606.08053 ,
Bibcode :
2006AstL...32..759G ,
doi :
10.1134/S1063773706110065 ,
S2CID
119231169 . ^
a b 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 .
^ Pasinetti Fracassini, L. E.; et al. (2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition - Comments and statistics", Astronomy & Astrophysics , 367 (2): 521–24,
arXiv :
astro-ph/0012289 ,
Bibcode :
2001A&A...367..521P ,
doi :
10.1051/0004-6361:20000451 ,
S2CID
425754 . ^
a b c d McDonald, I.; et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars", Monthly Notices of the Royal Astronomical Society , 427 (1): 343–57,
arXiv :
1208.2037 ,
Bibcode :
2012MNRAS.427..343M ,
doi :
10.1111/j.1365-2966.2012.21873.x ,
S2CID
118665352 . ^
a b Abt, Helmut A.; et al. (July 2002), "Rotational Velocities of B Stars", The Astrophysical Journal , 573 (1): 359–365,
Bibcode :
2002ApJ...573..359A ,
doi :
10.1086/340590 .
^
"HD 36780" .
SIMBAD .
Centre de données astronomiques de Strasbourg . Retrieved 2019-12-28 .
^ 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 .
^ Mammano, A. (May 1966), "Spectrum of the Early-Type Flare Star BD +13 1048", Information Bulletin on Variable Stars , 134 : 1,
Bibcode :
1966IBVS..134....1M .
^ Andrews, A. D. (July 1996), "A Re-Examination of the Suspected Early-Type Flare Star BD+31 1048 (bs 1938) in Auriga: a Skeleton from the Cupboard", Irish Astronomical Journal , 23 (2): 189,
Bibcode :
1996IrAJ...23..189A .
External links
