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Star in the constellation Triangulum
14 Trianguli (14 Tri), also known as HD 15656 , is a
spectroscopic binary
[16] located in the northern
constellation
Triangulum . It has an
apparent magnitude of 5.14,
[2] making it faintly visible to the
naked eye in ideal conditions.
Gaia DR3
parallax measurements place the system 433
light years away,
[1] and it is currently approaching the
Solar System with a heliocentric
radial velocity of −37
km/s .
[5] At its current distance, 14 Tri's brightness is diminished by 0.21
magnitude due to
interstellar dust .
[17] It has an
absolute magnitude of −0.46.
[6]
The visible component is an evolved
red giant with a
stellar classification of K5 III. It has 1.85 times the
mass of the Sun ,
[8] but it has expanded to 40.5 times its
girth .
[9] It radiates 373 times the
luminosity of the Sun
[10] from its
photosphere at an
effective temperature of 3,957
K ,
[12] giving it an orangish-red hue. 14 Tri is slightly metal-deficient with [Fe/H] = −0.16,
[13] and spins modestly with a
projected rotational velocity of 2.1
km/s .
[14] This is a single-lined
spectroscopic binary that completes an
eccentric orbit within 17 years. The secondary star has not been detected visually or in the spectrum and is expected to be a low-mass
red dwarf or
white dwarf .
[7] 14 Tri may be part of the
Wolf 630 moving group .
[18]
References
^
a
b
c
d
e 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 Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (March 2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics . 355 : L27–L30.
Bibcode :
2000A&A...355L..27H .
ISSN
0004-6361 .
^ Roman, Nancy G. (July 1952).
"The Spectra of the Bright Stars of Types F5-K5" . The Astrophysical Journal . 116 : 122.
Bibcode :
1952ApJ...116..122R .
doi :
10.1086/145598 .
eISSN
1538-4357 .
ISSN
0004-637X .
^
a
b Argue, A. N. (1 September 1966).
"UBV Photometry of 550 F, G and K Type Stars" . Monthly Notices of the Royal Astronomical Society . 133 (4): 475–493.
Bibcode :
1966MNRAS.133..475A .
doi :
10.1093/mnras/133.4.475 .
eISSN
1365-2966 .
ISSN
0035-8711 .
^
a
b Famaey, B.; Jorissen, A.; Luri, X.; Mayor, M.; Udry, S.; Dejonghe, H.; Turon, C. (January 2005).
"Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters" . Astronomy and Astrophysics . 430 : 165–186.
arXiv :
astro-ph/0409579 .
Bibcode :
2005A&A...430..165F .
doi :
10.1051/0004-6361:20041272 .
eISSN
1432-0746 .
ISSN
0004-6361 .
S2CID
17804304 .
^
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 .
eISSN
1562-6873 .
ISSN
1063-7737 .
S2CID
119257644 .
^
a
b Griffin, R. F. (1994). "Spectroscopic binary orbits from photoelectric radial velocities. Paper 117: 14 Trianguli". The Observatory . 114 : 167.
Bibcode :
1994Obs...114..167G .
^
a
b Kervella, Pierre; Arenou, Frédéric; Thévenin, Frédéric (21 December 2021).
"Stellar and substellar companions from Gaia EDR3" . Astronomy & Astrophysics . 657 : A7.
arXiv :
2109.10912 .
Bibcode :
2022A&A...657A...7K .
doi :
10.1051/0004-6361/202142146 .
eISSN
1432-0746 .
ISSN
0004-6361 .
^
a
b Kervella, P.; Thévenin, F.; Di Folco, E.; Ségransan, D. (October 2004).
"The angular sizes of dwarf stars and subgiants" . Astronomy & Astrophysics . 426 (1): 297–307.
arXiv :
astro-ph/0404180 .
Bibcode :
2004A&A...426..297K .
doi :
10.1051/0004-6361:20035930 .
eISSN
1432-0746 .
ISSN
0004-6361 .
^
a
b
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 .
^ Maas, Z. G.; Pilachowski, C. A.; Hinkle, K. (28 November 2016).
"Chlorine Abundances in Cool Stars" . The Astronomical Journal . 152 (6): 196.
arXiv :
1609.01626 .
Bibcode :
2016AJ....152..196M .
doi :
10.3847/0004-6256/152/6/196 .
eISSN
1538-3881 .
^
a
b di Benedetto, G. P. (November 1998). "Towards a fundamental calibration of stellar parameters of A, F, G, K dwarfs and giants". Astronomy and Astrophysics . 339 : 858–871.
Bibcode :
1998A&A...339..858D .
ISSN
0004-6361 .
^
a
b McWilliam, Andrew (December 1990).
"High-resolution spectroscopic survey of 671 GK giants. I - Stellar atmosphere parameters and abundances" . The Astrophysical Journal Supplement Series . 74 : 1075.
Bibcode :
1990ApJS...74.1075M .
doi :
10.1086/191527 .
eISSN
1538-4365 .
ISSN
0067-0049 .
^
a
b de Medeiros, J. R.; Mayor, M. (November 1999).
"A catalog of rotational and radial velocities for evolvedstars" . Astronomy and Astrophysics Supplement Series . 139 (3): 433–460.
Bibcode :
1999A&AS..139..433D .
doi :
10.1051/aas:1999401 .
eISSN
1286-4846 .
ISSN
0365-0138 .
^
"*14 Tri" .
SIMBAD .
Centre de données astronomiques de Strasbourg . Retrieved February 8, 2023 .
^ Eggleton, P. P.; Tokovinin, A. A. (11 September 2008).
"A catalogue of multiplicity among bright stellar systems" . Monthly Notices of the Royal Astronomical Society . 389 (2): 869–879.
arXiv :
0806.2878 .
Bibcode :
2008MNRAS.389..869E .
doi :
10.1111/j.1365-2966.2008.13596.x .
eISSN
1365-2966 .
ISSN
0035-8711 .
S2CID
14878976 .
^ Gontcharov, George A.; Mosenkov, Aleksandr V. (28 September 2017).
"Verifying reddening and extinction for Gaia DR1 TGAS main sequence stars" . Monthly Notices of the Royal Astronomical Society . 472 (4): 3805–3820.
arXiv :
1709.01160 .
Bibcode :
2017MNRAS.472.3805G .
doi :
10.1093/mnras/stx2219 .
eISSN
1365-2966 .
ISSN
0035-8711 .
^ McDonald, A. R. E.; Hearnshaw, J. B. (1 October 1983).
"The Wolf 630 moving group of stars" . Monthly Notices of the Royal Astronomical Society . 204 (3): 841–852.
Bibcode :
1983MNRAS.204..841M .
doi :
10.1093/mnras/204.3.841 .
eISSN
1365-2966 .
ISSN
0035-8711 .
Further reading