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Star in the constellation Lacerta
4 Lacertae is a single
[9]
star in the northern
constellation
Lacerta , located about 2,600
light years away.
[1] This object visible to the naked eye as a white-hued star with an
apparent visual magnitude of 4.55.
[2] It is moving closer to the Earth with a heliocentric
radial velocity of −26 km/s.
[2] This star is a suspected member of the Lac
OB1 association .
[10]
[4]
This is a
supergiant
[10] star with a
stellar classification of A0 Ib.
[3] The surface abundances show evidence of material that has been processed via the
CNO cycle at the core.
[10] It has ten
[7] times the
mass of the Sun and has expanded to about 59
[5] times the
Sun's radius . The star is around 25
[7] million years old and is spinning with a
projected rotational velocity of 28 km/s.
[5]
[1]
References
^
a
b
c
d
e
f
g Vallenari, A.; et al. (Gaia collaboration) (2023).
"Gaia Data Release 3. Summary of the content and survey properties" . Astronomy and Astrophysics . 674 : A1.
arXiv :
2208.00211 .
Bibcode :
2023A&A...674A...1G .
doi :
10.1051/0004-6361/202243940 .
S2CID
244398875 .
Gaia DR3 record for this source at
VizieR .
^
a
b
c
d
e 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 Gray, R. O.; Garrison, R. F. (1987), "The Early A-Type Stars: Refined MK Classification, Confrontation with Stroemgren Photometry, and the Effects of Rotation", The Astrophysical Journal Supplement Series , 65 : 581,
Bibcode :
1987ApJS...65..581G ,
doi :
10.1086/191237 .
^
a
b Kaltcheva, Nadia (October 2009), "Lacerta OB1 Revisited", Publications of the Astronomical Society of the Pacific , 121 (884): 1045–1053,
Bibcode :
2009PASP..121.1045K ,
doi :
10.1086/606037 ,
S2CID
120329065 .
^
a
b
c
d
e
f
g
h Markova, N.; Puls, J. (2008), "Bright OB stars in the Galaxy. IV. Stellar and wind parameters of early to late B supergiants", Astronomy and Astrophysics , 478 (3): 823,
arXiv :
0711.1110 ,
Bibcode :
2008A&A...478..823M ,
doi :
10.1051/0004-6361:20077919 ,
S2CID
14510634
^ Gáspár, András; et al. (2016), "The Correlation between Metallicity and Debris Disk Mass", The Astrophysical Journal , 826 (2): 171,
arXiv :
1604.07403 ,
Bibcode :
2016ApJ...826..171G ,
doi :
10.3847/0004-637x/826/2/171 ,
S2CID
119241004 .
^
a
b
c Tetzlaff, N.; et al. (January 2011), "A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun", Monthly Notices of the Royal Astronomical Society , 410 (1): 190–200,
arXiv :
1007.4883 ,
Bibcode :
2011MNRAS.410..190T ,
doi :
10.1111/j.1365-2966.2010.17434.x ,
S2CID
118629873 .
^
"4 Lac" .
SIMBAD .
Centre de données astronomiques de Strasbourg . Retrieved 2019-01-28 .
^ Eggleton, P. P.; Tokovinin, A. A. (2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society , 389 (2): 869,
arXiv :
0806.2878 ,
Bibcode :
2008MNRAS.389..869E ,
doi :
10.1111/j.1365-2966.2008.13596.x ,
S2CID
14878976 .
^
a
b
c Yüce, Kutluay (2005), "Spectral Analysis of 4 Lacertae and ν Cephei", Baltic Astronomy , 14 : 51–82,
Bibcode :
2005BaltA..14...51Y .