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Star in the constellation Perseus
49 Persei is a
star in the northern
constellation of
Perseus . It is just visible to the naked eye as a dim, orange-hued star with an
apparent visual magnitude of 6.09.
[2] Based upon
parallax measurements, this star is located around 147.7 light-years (45.27 parsecs) away from the Sun, but is drifting closer with a
radial velocity of −44 km/s.
[2] It has a relatively large
proper motion , traversing the
celestial sphere at a rate of ″ −1 .
[6]
This is an aging
red giant star with a
stellar classification of K1III, a star that has used up its
core
hydrogen and is expanding. It is a candidate
horizontal branch star, which would indicate it is past the
red giant branch stage and is fusing helium at its core.
[7] The star is nearly four
[4] billion years old with 1.4
[4] times the
mass of the Sun and 3.7
[1] times the
Sun's radius . It is radiating eight
[1] times the
luminosity of the Sun from its
photosphere at an
effective temperature of 5,028 K.
[1]
References
^
a b c d e f g h i j k
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 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 .
^ Roman, Nancy G. (December 1955), "A Catalogue of High-Velocity Stars", The Astrophysical Journal Supplement Series , 2 : 195,
Bibcode :
1955ApJS....2..195R ,
doi :
10.1086/190021 ,
ISSN
0067-0049 . ^
a b c d e Luck, R. Earle (January 2017), "Abundances in the Local Region II: F, G, and K Dwarfs and Subgiants", The Astronomical Journal , 153 (1): 19,
arXiv :
1611.02897 ,
Bibcode :
2017AJ....153...21L ,
doi :
10.3847/1538-3881/153/1/21 ,
S2CID
119511744 , 21.
^
"49 Per" .
SIMBAD .
Centre de données astronomiques de Strasbourg . Retrieved 2019-07-18 .
^ Lépine, Sébastien; Shara, Michael M. (March 2005), "A Catalog of Northern Stars with Annual Proper Motions Larger than 0.15" (LSPM-NORTH Catalog)", The Astronomical Journal , 129 (3): 1483–1522,
arXiv :
astro-ph/0412070 ,
Bibcode :
2005AJ....129.1483L ,
doi :
10.1086/427854 ,
S2CID
2603568 .
^ Afșar, Melike; et al. (June 2018), "A Spectroscopic Survey of Field Red Horizontal-branch Stars", The Astronomical Journal , 155 (6): 25,
arXiv :
1804.04477 ,
Bibcode :
2018AJ....155..240A ,
doi :
10.3847/1538-3881/aabe86 ,
S2CID
119336618 , 240.
