From Wikipedia, the free encyclopedia
Star in the constellation Auriga
NO Aurigae is a pulsating
variable star in the constellation
Auriga . It is an unusually-luminous
asymptotic giant branch star about 3,500
light years away.
Variability
A light curve for NO Aurigae plotted from
Hipparcos data
[10]
NO Aurigae is listed in the
General Catalogue of Variable Stars as a
slow irregular variable , indicating that no regularity could be found in the brightness variations. Other studies have suggested possible periods of 102.1, 173, and 226 days, and would classify it as a
semiregular variable star .
[11] The maximum visual magnitude range is 6.05–6.50.
[11]
Properties
Most studies of NO Aurigae treat it as a
red supergiant member of the Auriga OB1
stellar association at about 1.4 kpc.
[12]
[13] On this basis it would have a luminosity around 67,000 L ☉ and a radius around 630 R ☉ .
[2]
[12]
NO Aurigae is an
MS star , intermediate between spectral type M and S. These are typically
Asymptotic Giant Branch stars which can appear with supergiant spectra due to their large size and low mass.
[4] Possible detection of
Technetium in the spectrum is a symptom of the
third dredge-up which occurs only in late AGB stars.
[13]
References
^
a
b
c
d
e
Brown, A. G. A. ; et al. (Gaia collaboration) (2021).
"Gaia Early Data Release 3: Summary of the contents and survey properties" .
Astronomy & Astrophysics . 649 : A1.
arXiv :
2012.01533 .
Bibcode :
2021A&A...649A...1G .
doi :
10.1051/0004-6361/202039657 .
S2CID
227254300 . (Erratum:
doi :
10.1051/0004-6361/202039657e ) .
Gaia EDR3 record for this source at
VizieR .
^
a
b
c
Levesque, Emily M. ; Massey, Philip; Olsen, K. A. G.; Plez, Bertrand; Josselin, Eric; Maeder, Andre; Meynet, Georges (2005). "The Effective Temperature Scale of Galactic Red Supergiants: Cool, but Not As Cool As We Thought". The Astrophysical Journal . 628 (2): 973–985.
arXiv :
astro-ph/0504337 .
Bibcode :
2005ApJ...628..973L .
doi :
10.1086/430901 .
S2CID
15109583 .
^
a
b
c Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S . 1 .
Bibcode :
2009yCat....102025S .
^
a
b Guandalini, R.; Busso, M. (2008). "Infrared photometry and evolution of mass-losing AGB stars. II. Luminosity and colors of MS and S stars". Astronomy and Astrophysics . 488 (2): 675–684.
arXiv :
0806.4591 .
Bibcode :
2008A&A...488..675G .
doi :
10.1051/0004-6361:200809932 .
S2CID
14294870 .
^
a
b
c Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues . 2237 .
Bibcode :
2002yCat.2237....0D .
^ Famaey, B.; Jorissen, A.; Luri, X.; Mayor, M.; Udry, S.; Dejonghe, H.; Turon, C. (2005). "Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters". Astronomy and Astrophysics . 430 : 165.
arXiv :
astro-ph/0409579 .
Bibcode :
2005A&A...430..165F .
doi :
10.1051/0004-6361:20041272 .
S2CID
17804304 .
^ Hohle, M. M.; Neuhäuser, R.; Schutz, B. F. (April 2010). "Masses and luminosities of O- and B-type stars and red supergiants". Astronomische Nachrichten . 331 (4): 349.
arXiv :
1003.2335 .
Bibcode :
2010AN....331..349H .
doi :
10.1002/asna.200911355 .
S2CID
111387483 .
NO Aurigae's database entry at
VizieR .
^
a
b
c Taniguchi, Daisuke; Matsunaga, Noriyuki; Jian, Mingjie; Kobayashi, Naoto; Fukue, Kei; Hamano, Satoshi; Ikeda, Yuji; Kawakita, Hideyo; Kondo, Sohei; Otsubo, Shogo; Sameshima, Hiroaki; Takenaka, Keiichi; Yasui, Chikako (2021-04-01).
"Effective temperatures of red supergiants estimated from line-depth ratios of iron lines in the YJ bands, 0.97-1.32μm" . Monthly Notices of the Royal Astronomical Society . 502 : 4210–4226.
arXiv :
2012.07856 .
doi :
10.1093/mnras/staa3855 .
ISSN
0035-8711 .
^ McDonald, I.; Zijlstra, A. A.; Watson, R. A. (2017). "Fundamental parameters and infrared excesses of Tycho-Gaia stars". Monthly Notices of the Royal Astronomical Society . 471 (1): 770.
arXiv :
1706.02208 .
Bibcode :
2017MNRAS.471..770M .
doi :
10.1093/mnras/stx1433 .
S2CID
73594365 .
^
"Hipparcos Tools Interactive Data Access" . Hipparcos . ESA. Retrieved 8 December 2021 .
^
a
b Watson, C. L. (2006). "The International Variable Star Index (VSX)". The Society for Astronomical Sciences 25th Annual Symposium on Telescope Science. Held May 23–25 . 25 : 47.
Bibcode :
2006SASS...25...47W .
^
a
b Mauron, N.; Josselin, E. (2011). "The mass-loss rates of red supergiants and the de Jager prescription". Astronomy and Astrophysics . 526 : A156.
arXiv :
1010.5369 .
Bibcode :
2011A&A...526A.156M .
doi :
10.1051/0004-6361/201013993 .
S2CID
119276502 .
^
a
b Josselin, E.; Plez, B. (2007). "Atmospheric dynamics and the mass loss process in red supergiant stars". Astronomy and Astrophysics . 469 (2): 671.
arXiv :
0705.0266 .
Bibcode :
2007A&A...469..671J .
doi :
10.1051/0004-6361:20066353 .
S2CID
17789027 .
External links