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Star in the constellation Mensa
HD 31975 (HR 1606 ) is a star situated in the southern
circumpolar constellation
Mensa . It has an
apparent magnitude of 6.28, which is near the threshold of
naked eye visibility. It is relatively close at a distance of about 106
light years
[1] but is receding with a heliocentric
radial velocity of 26.9
km/s .
[5]
HD 31975 has a
stellar classification of F9 V Fe−0.5, indicating that it is a
F-type main-sequence star with a mild under abundance of
iron in its
atmosphere .
[3] At present it has 120% the
mass of the Sun and 146% the
radius of the Sun .
[6] It shines at double the
luminosity of the Sun from its
photosphere at an
effective temperature of 6,165
K ,
[6] giving it a yellow-white glow. HD 31975 has a similar
metallicity to the
Sun
[7] and at an age of 3.5
billion years
[7] it spins slowly with a
projected rotational velocity of 6
km/s .
[8]
The
Washington Double Star Catalog lists a faint M5 companion 16.5" away, which is related to the star.
[9]
References
^
a
b
c
d
e
f
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 Anderson, E.; Francis, Ch. (May 2012). "XHIP: An extended hipparcos compilation". Astronomy Letters . 38 (5): 331–346.
arXiv :
1108.4971 .
Bibcode :
2012AstL...38..331A .
doi :
10.1134/S1063773712050015 .
ISSN
1063-7737 .
S2CID
119257644 .
^
a
b Gray, R. O.; Corbally, C. J.; Garrison, R. F.; McFadden, M. T.; Bubar, E. J.; McGahee, C. E.; O'Donoghue, A. A.; Knox, E. R. (July 2006).
"Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 pc--The Southern Sample" . The Astronomical Journal . 132 (1): 161–170.
arXiv :
astro-ph/0603770 .
Bibcode :
2006AJ....132..161G .
doi :
10.1086/504637 .
^
a
b Johnson, H. L.; Mitchell, R. I.; Iriarte, B.; Wisniewski, W. Z. (1 January 1966). "UBVRIJKL Photometry of the Bright Stars". Communications of the Lunar and Planetary Laboratory . 4 : 99–110.
Bibcode :
1966CoLPL...4...99J .
^
a
b Gontcharov, G. A. (November 2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters . 32 (11): 759–771.
arXiv :
1606.08053 .
Bibcode :
2006AstL...32..759G .
doi :
10.1134/S1063773706110065 .
ISSN
1063-7737 .
S2CID
119231169 .
^
a
b
c
d
e
f
g Stassun, Keivan G.; Oelkers, Ryan J.; Pepper, Joshua; Paegert, Martin; De Lee, Nathan; Torres, Guillermo; Latham, David W.; Charpinet, Stéphane; Dressing, Courtney D.; Huber, Daniel; Kane, Stephen R.; Lépine, Sébastien; Mann, Andrew; Muirhead, Philip S.; Rojas-Ayala, Bárbara; Silvotti, Roberto; Fleming, Scott W.; Levine, Al; Plavchan, Peter; the TESS Target Selection Working Group (2018).
"The TESS Input Catalog and Candidate Target List" . The Astronomical Journal . 156 (3): 102.
arXiv :
1706.00495 .
Bibcode :
2018AJ....156..102S .
doi :
10.3847/1538-3881/aad050 .
S2CID
73582386 .
^
a
b
c
d Casagrande, L.; Schönrich, R.; Asplund, M.; Cassisi, S.; Ramírez, I.; Meléndez, J.; Bensby, T.; Feltzing, S. (June 2011).
"New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s): Improved astrophysical parameters for the Geneva-Copenhagen Survey⋆" . Astronomy & Astrophysics . 530 : A138.
arXiv :
1103.4651 .
Bibcode :
2011A&A...530A.138C .
doi :
10.1051/0004-6361/201016276 .
ISSN
0004-6361 .
^
a
b Nordström, B.; Mayor, M.; Andersen, J.; Holmberg, J.; Pont, F.; Jørgensen, B. R.; Olsen, E. H.; Udry, S.; Mowlavi, N. (May 2004).
"The Geneva-Copenhagen survey of the Solar neighbourhood. Ages, metallicities, and kinematic properties of ~14 000 F and G dwarfs" . Astronomy and Astrophysics . 418 : 989–1019.
arXiv :
astro-ph/0405198 .
Bibcode :
2004A&A...418..989N .
doi :
10.1051/0004-6361:20035959 .
ISSN
0004-6361 .
S2CID
11027621 .
^ Mason, Brian D.; Wycoff, Gary L.; Hartkopf, William I.; Douglass, Geoffrey G.; Worley, Charles E. (December 2001).
"The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog" . The Astronomical Journal . 122 (6): 3466–3471.
Bibcode :
2001AJ....122.3466M .
doi :
10.1086/323920 .
ISSN
0004-6256 .