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Possible binary star system in the constellation Boötes
14 Boötis is a possible
binary star
[9] system located 110
light years away from the Sun in the northern
constellation of
Boötes . It is visible to the naked eye as a dim, yellow-white hued star with a combined
apparent visual magnitude of 5.53.
[2] This system is moving closer to the Earth with a heliocentric
radial velocity of −40 km/s.
[4] It has a relatively high
proper motion , traversing the
celestial sphere at the rate of 0.260
arc seconds per annum.
[10]
The component of this system remain unresolved as of 2002;
[11] Eggleton and Tokovinin (2008) listed an
angular separation of 0.2
″ .
[9] The visible component is an
F-type main-sequence star with a
stellar classification of F8 V
[3] There are enhanced barium lines in the star's
spectrum , but these are likely caused by regions of photospheric activity rather than being a
barium star .
[12] It is 2.6
[4] billion years old and is spinning with a
projected rotational velocity of 5.6 km/s,
[7] giving it a
rotation period of 26 days.
[6]
14 Boötis has 1.46
[4] times the
mass of the Sun and 2.1
[1] times the
Sun's radius . It is radiating 5.9
[1] times the
luminosity of the Sun from its
photosphere at an
effective temperature of 6,169 K.
[1] The
metallicity is near solar, based on the abundance of iron in the
stellar atmosphere .
[6]
References
^
a
b
c
d
e
f
g
h
i
j
k
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 Takeda, Yoichi; et al. (February 2005), "High-Dispersion Spectra Collection of Nearby F--K Stars at Okayama Astrophysical Observatory: A Basis for Spectroscopic Abundance Standards", Publications of the Astronomical Society of Japan , 57 (1): 13–25,
Bibcode :
2005PASJ...57...13T ,
doi :
10.1093/pasj/57.1.13 .
^
a
b Abt, Helmut A. (2009), "MK Classifications of Spectroscopic Binaries", The Astrophysical Journal Supplement , 180 (1): 117–18,
Bibcode :
2009ApJS..180..117A ,
doi :
10.1088/0067-0049/180/1/117 ,
S2CID
122811461 .
^
a
b
c
d
e
f Casagrande, L.; et al. (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 and Astrophysics , 530 : A138,
arXiv :
1103.4651 ,
Bibcode :
2011A&A...530A.138C ,
doi :
10.1051/0004-6361/201016276 ,
S2CID
56118016 .
^ Takeda, Yoichi (April 2007), "Fundamental Parameters and Elemental Abundances of 160 F-G-K Stars Based on OAO Spectrum Database", Publications of the Astronomical Society of Japan , 59 (2): 335–356,
Bibcode :
2007PASJ...59..335T ,
doi :
10.1093/pasj/59.2.335 .
^
a
b
c
d
e Reinhold, Timo; et al. (January 2019), "Transition from spot to faculae domination. An alternate explanation for the dearth of intermediate Kepler rotation periods", Astronomy & Astrophysics , 621 : 14,
arXiv :
1810.11250 ,
Bibcode :
2019A&A...621A..21R ,
doi :
10.1051/0004-6361/201833754 ,
S2CID
119505516 , A21 .
^
a
b Pizzolato, N.; Maggio, A.; Sciortino, S. (September 2000), "Evolution of X-ray activity of 1-3 Msun late-type stars in early post-main-sequence phases", Astronomy and Astrophysics , 361 : 614–628,
Bibcode :
2000A&A...361..614P .
^
"14 Boo" .
SIMBAD .
Centre de données astronomiques de Strasbourg . Retrieved 2018-01-26 .
^
a
b Eggleton, P. P.; Tokovinin, A. A. (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 ,
S2CID
14878976 .
^ Lépine, Sébastien; Shara, Michael M. (March 2005), "A Catalog of Northern Stars with Annual Proper Motions Larger than 0.15" (LSPM-NORTH Catalog)", The Astronomical Journal , 129 (3): 1483–1522,
arXiv :
astro-ph/0412070 ,
Bibcode :
2005AJ....129.1483L ,
doi :
10.1086/427854 ,
S2CID
2603568 .
^ Roberts, Lewis C. Jr. (May 2011), "Astrometric and photometric measurements of binary stars with adaptive optics: observations from 2002",
Monthly Notices of the Royal Astronomical Society , 413 (2): 1200–1205,
arXiv :
1012.3383 ,
Bibcode :
2011MNRAS.413.1200R ,
doi :
10.1111/j.1365-2966.2011.18205.x ,
S2CID
118398949 .
^ Pakhomov, Yu. V. (May 2018), "Spectroscopic analysis of barium dwarfs", in Bisikalo, D. V.; Wiebe, D. S. (eds.), Proceedings of the 2018 acad. A.A. Boyarchuk Memorial Conference (in Russian), Moscow: Yanus-K, pp. 23–28,
Bibcode :
2018abmc.conf...23P ,
doi :
10.26087/INASAN.2018.1.1.004 .
External links