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Variable star in the constellation Virgo
32 Virginis , also known as FM Virginis , is a star located about 250
light years from the Earth, in the constellation
Virgo .
[2] Its
apparent magnitude ranges from 5.20 to 5.28, making it faintly visible to the naked eye of an observer well away from
city lights .
[3] 32 Virginis is a binary star,
[11] and the more massive component of the binary is a
Delta Scuti variable star which oscillates with a dominant period of 103.51 minutes.
[11]
In 1914,
Walter Sydney Adams announced that 32 Virginis is a
spectroscopic binary .
[12] John Beattie Cannon published the first set of orbital elements for the binary system in 1915.
[13] Corrado Bartolini et al. made photometric observations of the star in early 1971, and found that the star showed variability due to pulsations.
[14] In 1974, 32 Virginis was given the
variable star designation FM Virginis.
[15]
Donald Kurtz et al. determined that the star was a Delta Scuti variable, in 1976.
[8]
The primary star is believed to be an
Am star similar to
rho Puppis - a pulsating post-
main sequence star.
[16]
References
^
"MAST: Barbara A. Mikulski Archive for Space Telescopes" . Space Telescope Science Institute. Retrieved 14 January 2023 .
^
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 Samus', N. N.; Kazarovets, E. V.; Durlevich, O. V.; Kireeva, N. N.; Pastukhova, E. N. (2017). "General catalogue of variable stars: Version GCVS 5.1". Astronomy Reports . 61 (1): 80.
Bibcode :
2017ARep...61...80S .
doi :
10.1134/S1063772917010085 .
S2CID
125853869 .
^ Pyper, Diane M.; Adelman, Saul J. (August 2021).
"Light Curve Changes and Possible Precession in mCP Stars" . Publications of the Astronomical Society of the Pacific . 133 (1026): 084203.
Bibcode :
2021PASP..133h4203P .
doi :
10.1088/1538-3873/ac1ac0 .
S2CID
237301384 .
^
a
b
c
d Mitton, J.; Stickland, D. J. (January 1979).
"The nature of the components of the spectroscopic binary, 32 Virginis" . Monthly Notices of the Royal Astronomical Society . 186 (2): 189–195.
Bibcode :
1979MNRAS.186..189M .
doi :
10.1093/mnras/186.2.189 . Retrieved 16 January 2023 .
^
a
b Renson, P.; Manfroid, J. (May 2009).
"Catalogue of Ap, HgMn and Am stars" (PDF) . Astronomy and Astrophysics . 498 (3): 961–966.
Bibcode :
2009A&A...498..961R .
doi :
10.1051/0004-6361/200810788 . Retrieved 16 January 2023 .
^ Bertiau, F. C. (May 1957).
"The Orbits of the Spectroscopic Binaries Rho Orionis, Eta Bootis, and 32 Virginis" . Astrophysical Journal . 125 : 696.
Bibcode :
1957ApJ...125..696B .
doi :
10.1086/146343 . Retrieved 16 January 2023 .
^
a
b
c
d
e Kurtz, D. W.; Breger, M.; Evans, S. W.; Sandmann, W. H. (July 1976).
"Metallicism, pulsation, and the nature of 32 Virginis" . Astrophysical Journal . 207 : 181–189.
Bibcode :
1976ApJ...207..181K .
doi :
10.1086/154482 .
^
"d02 Vir -- delta Sct Variable" .
SIMBAD .
Centre de données astronomiques de Strasbourg . Retrieved 2023-01-15 .
^ Douglas, A. V. (November 1926).
"Spectroscopic magnitudes of A-type stars" . Astrophysical Journal . 64 : 262–270.
Bibcode :
1926ApJ....64..262D .
doi :
10.1086/143011 . Retrieved 16 January 2023 .
^
a
b Liakos, Alexios; Niarchos, Panagiotis (February 2017).
"Catalogue and properties of δ Scuti stars in binaries" . Monthly Notices of the Royal Astronomical Society . 465 (1): 1181–1200.
arXiv :
1611.00200 .
Bibcode :
2017MNRAS.465.1181L .
doi :
10.1093/mnras/stw2756 . Retrieved 16 January 2023 .
^ Adams, W. S. (December 1914).
"Ten Spectroscopic Binaries" . Publications of the Astronomical Society of the Pacific . 26 (156): 261.
Bibcode :
1914PASP...26..261A .
doi :
10.1086/122362 .
S2CID
122672368 .
^ Cannon, J. B. (1915).
"Orbit of Boss 3323" . Publications of the Dominion Observatory Ottawa . 2 : 367–384.
Bibcode :
1915PDO.....2..367C . Retrieved 16 January 2023 .
^ Bartolini, C.; Grilli, F.; Parmeggiani, G. (August 1972).
"32 Virginis: a pulsating Am star" . Information Bulletin on Variable Stars . 704 (1): 1.
Bibcode :
1972IBVS..704....1B . Retrieved 16 January 2023 .
^ Kukarkin, B. V.; Kholopov, P. N.; Kukarkina, N. P.; Perova, N. B. (January 1975).
"60th Name-List of Variable Stars" . Information Bulletin on Variable Stars . 961 (1): 1.
Bibcode :
1975IBVS..961....1K . Retrieved 16 January 2023 .
^ Aurière, M.; Wade, G. A.; Lignières, F.; Hui-Bon-Hoa, A.; Landstreet, J. D.; Iliev, I. Kh.; Donati, J. F.; Petit, P.; Roudier, T.; Théado, S. (November 2010).
"No detection of large-scale magnetic fields at the surfaces of Am and HgMn stars" (PDF) . Astronomy and Astrophysics . 523 : A40.
arXiv :
1008.3086 .
Bibcode :
2010A&A...523A..40A .
doi :
10.1051/0004-6361/201014848 .
S2CID
118643022 . Retrieved 16 January 2023 .