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Star in the constellation Piscis Austrinus
Tau Piscis Austrini (τ Piscis Austrini ) is a solitary,
[9] yellow-white hued
star in the southern
constellation of
Piscis Austrinus . It is visible to the naked eye with an
apparent visual magnitude of +4.9.
[2] Based upon an annual
parallax shift of 54.71
mas as seen from the Earth,
[1] the star is located 59.6
light years from the
Sun .
This is an
F-type main sequence star with a
stellar classification of F6 V.
[3] It is about 1.3
[7] billion years old with a
projected rotational velocity of 14
[4] km/s and exhibits a low level of
activity .
[10] The star has an estimated 1.34 times the
mass of the Sun and 1.45 times the
Sun's radius .
[5] It is radiating 2.82
[5] times the
solar luminosity from its
photosphere at an
effective temperature of 6,324 K.
[4] This star is a candidate for hosting a
debris disk , as it displayed an initial near
infrared excess that faded with further observations.
[11]
Naming In
Chinese , 天錢 Tiān Qián
Celestial Money , refers to an asterism consisting of refers to an asterism consisting of τ Piscis Austrini,
13 Piscis Austrini ,
θ Piscis Austrini ,
ι Piscis Austrini and
μ Piscis Austrini . Consequently, the
Chinese name for τ Piscis Austrini itself is 天錢五 Tiān Qián wǔ the Fifth Star of Celestial Money .)
[12]
References
^
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S2CID
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a b c d Gutierrez-Moreno, Adelina; et al. (1966), "A System of photometric standards", Publications of the Department of Astronomy University of Chile , 1 , Publicaciones Universidad de Chile, Department de Astronomy: 1–17,
Bibcode :
1966PDAUC...1....1G . ^
a b Gray, R. O.; et al. (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 :
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Bibcode :
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doi :
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S2CID
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a b c d e Ammler-von Eiff, Matthias; Reiners, Ansgar (June 2012), "New measurements of rotation and differential rotation in A-F stars: are there two populations of differentially rotating stars?", Astronomy & Astrophysics , 542 : A116,
arXiv :
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Bibcode :
2012A&A...542A.116A ,
doi :
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S2CID
53666672 . ^
a b c d e Bruntt, H.; et al. (July 2010), "Accurate fundamental parameters for 23 bright solar-type stars",
Monthly Notices of the Royal Astronomical Society , 405 (3): 1907–1923,
arXiv :
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Bibcode :
2010MNRAS.405.1907B ,
doi :
10.1111/j.1365-2966.2010.16575.x ,
S2CID
118495267 . ^
a b Maldonado, J.; et al. (July 2015), "Searching for signatures of planet formation in stars with circumstellar debris discs", Astronomy & Astrophysics , 579 : 41,
arXiv :
1502.07100 ,
Bibcode :
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doi :
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S2CID
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a b Holmberg, J.; et al. (July 2009), "The Geneva-Copenhagen survey of the solar neighbourhood. III. Improved distances, ages, and kinematics", Astronomy and Astrophysics , 501 (3): 941–947,
arXiv :
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Bibcode :
2009A&A...501..941H ,
doi :
10.1051/0004-6361/200811191 ,
S2CID
118577511 .
^
"tau PsA -- High proper-motion Star" , SIMBAD Astronomical Database , Centre de Données astronomiques de Strasbourg, retrieved 2017-05-17 .
^ 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 :
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Bibcode :
2008MNRAS.389..869E ,
doi :
10.1111/j.1365-2966.2008.13596.x ,
S2CID
14878976 .
^ Meunier, N.; et al. (September 2012), "Comparison of different exoplanet mass detection limit methods using a sample of main-sequence intermediate-type stars", Astronomy & Astrophysics , 545 : 16,
arXiv :
1207.4329 ,
Bibcode :
2012A&A...545A..87M ,
doi :
10.1051/0004-6361/201219163 ,
S2CID
59138448 , A87.
^ Ertel, S.; et al. (October 2016), "A near-infrared interferometric survey of debris-disc stars. V. PIONIER search for variability", Astronomy & Astrophysics , 595 : 6,
arXiv :
1608.05731 ,
Bibcode :
2016A&A...595A..44E ,
doi :
10.1051/0004-6361/201527721 ,
S2CID
7277663 , A44.
^ (in Chinese)
AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 7 月 5 日
