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Star in the constellation Auriga
49 Aurigae is a single
[8]
star located 680
[1]
light years away from the Sun in the northern
constellation of
Auriga .
[7] It is visible to the naked eye as a dim, white-hued star with an
apparent visual magnitude of 5.26.
[2] The star is moving away from the Earth with a heliocentric
radial velocity of +17 km/s, having come to within 149 ly some 5.5 million years ago.
[2] It is positioned near the
ecliptic and thus is subject to
lunar occultations .
[9]
[10]
This object is an
A-type main-sequence star with a
stellar classification of A0 Vnn,
[3] where the 'n' notation indicates "nebulous"
lines due to rapid rotation. It is spinning with a
projected rotational velocity of 149 km/s.
[6] This star has around 2.3
[4] times the
radius of the Sun and is radiating over three
[2] times the
Sun's luminosity from its
photosphere at an
effective temperature of 8,794 K.
[5]
References
^
a
b
c
d
e
f
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
g
h 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 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 Pasinetti Fracassini, L. E.; Pastori, L.; Covino, S.; Pozzi, A. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)", Astronomy and Astrophysics , 367 (Third ed.): 521–524,
arXiv :
astro-ph/0012289 ,
Bibcode :
2001A&A...367..521P ,
doi :
10.1051/0004-6361:20000451 ,
S2CID
425754 .
^
a
b McDonald, I.; et al. (2012), "Fundamental parameters and infrared excesses of Hipparcos stars", Monthly Notices of the Royal Astronomical Society , 427 (1): 343–357,
arXiv :
1208.2037 ,
Bibcode :
2012MNRAS.427..343M ,
doi :
10.1111/j.1365-2966.2012.21873.x ,
S2CID
118665352 .
^
a
b Dworetsky, Michael M. (November 1974), "Rotational Velocities of a0 Stars", Astrophysical Journal Supplement , 28 : 101,
Bibcode :
1974ApJS...28..101D ,
doi :
10.1086/190312 .
^
a
b
"49 Aur" .
SIMBAD .
Centre de données astronomiques de Strasbourg . Retrieved 2019-05-24 .
^ 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 .
^ Meyer, C.; et al. (1995), "Observations of lunar occultations at Observatoire de la Cote d'Azur", Astronomy and Astrophysics Supplement , 110 : 107,
Bibcode :
1995A&AS..110..107M .
^ Schmidtke, P. C.; Africano, J. L. (2011), "KPNO Lunar Occultation Summary. III", The Astronomical Journal , 141 (1): 10,
Bibcode :
2011AJ....141...10S ,
doi :
10.1088/0004-6256/141/1/10 .