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F r o m W i k i p e d i a , t h e f r e e e n c y c l o p e d i a
F-type main sequence star in the constellation Serpens
Serpens
15 h 56 m 27.18269s [1]
+15° 39 ′ 41.8206″[1]
3.85[2]
F6 V [2]
-0.03[3]
+0.48[2]
Suspected[4]
6.78 ± 0.09 [5] km/s
RA: 310.93 ± 0.20 [1] mas /yr Dec.: -1282.19 ± 0.18 [1] mas /yr
88.86 ± 0.18 mas [1]
36.70 ± 0.07 ly (11.25 ± 0.02 pc )
3.60[6]
1.30 ± 0.15 [7] M ☉
1.55 ± 0.05 [7] R ☉
3.02 ± 0.09 [7] L ☉
4.23[2] cgs
6,350 ± 310 [2] K
−0.19[7] dex
10.2[7] km/s
3.49[8] Gyr
data
Gamma Serpentis (γ Serpentis, γ Ser) is a star in the equatorial constellation Serpens , in the part of the constellation that represents the serpent's head (Serpens Caput). It has an apparent visual magnitude +3.85,[2] which means it is visible to the naked eye. Based upon parallax measurements by the Hipparcos spacecraft, this star is approximately 36.7 light years from Earth .[1]
Properties [ edit ]
Gamma Serpentis is an ordinary F-type main sequence star with a stellar classification of F6 V.[2] It is larger and more massive than the Sun, with three times the solar luminosity .[7] Based upon its mass, it may have a convection zone in its core region .[4] The projected rotational velocity along the equator is 10.2[7] km/s. It is younger than the Sun with an estimated age of 3.5 billion years.[8] The effective temperature of the star's outer atmosphere is 6,350 K,[2] giving it the yellow-white-hued glow of an F-type star.[10]
Occasionally Gamma Serpentis is listed as having two 10th magnitude companions, but it appears that these stars are just optical neighbours .
Etymology [ edit ]
It was a member of indigenous Arabic asterism al-Nasaq al-Sha'āmī , "the Northern Line" of al-Nasaqān "the Two Lines",[11] along with β Her (Kornephoros), γ Her (Hejian, Ho Keen) and β Ser (Chow).[12]
According to the catalogue of stars in the Technical Memorandum 33-507 - A Reduced Star Catalog Containing 537 Named Stars , al-Nasaq al-Sha'āmī or Nasak Shamiya were the title for three stars:β Ser as Nasak Shamiya I , γ Ser as Nasak Shamiya II , γ Her as Nasak Shamiya III (exclude β Her ).[13] The star was later given the proper name Ainalhai , from the Arabic عين الحية ‘Ayn al-Ḥayyah "the Serpent 's Eye".
In Chinese , 天市右垣 (Tiān Shì Yòu Yuán ), meaning Right Wall of Heavenly Market Enclosure , refers to an asterism which represents eleven old states in China and which marks the right borderline of the enclosure, consisting of γ Serpentis, β Herculis , γ Herculis , κ Herculis , β Serpentis , δ Serpentis , α Serpentis , ε Serpentis , δ Ophiuchi , ε Ophiuchi and ζ Ophiuchi .[14] Consequently, the Chinese name for γ Serpentis itself is 天市右垣四 (Tiān Shì Yòu Yuán sì , English: the Fourth Star of Right Wall of Heavenly Market Enclosure ), representing the state Zheng (鄭) (or Ching ),[15] [16] [17] together with 20 Capricorni (according to Ian Ridpath version[18] ) in Twelve States (asterism).
References [ edit ]
^ a b c d e f g h Malagnini, M. L.; Morossi, C. (November 1990), "Accurate absolute luminosities, effective temperatures, radii, masses and surface gravities for a selected sample of field stars", Astronomy and Astrophysics Supplement Series , 85 (3 ): 1015–1019, Bibcode :1990A&AS...85.1015M
^ Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data. SIMBAD , Bibcode :1986EgUBV........0M .
^ a b Bi, S.-L.; Basu, Sarbani; Li, L.-H. (February 2008), "Seismological Analysis of the Stars γ Serpentis and ι Leonis: Stellar Parameters and Evolution", The Astrophysical Journal , 673 (2 ): 1093–1105, Bibcode :2008ApJ...673.1093B , doi :10.1086/521575 .
^ Nidever, David L.; et al. (August 2002), "Radial Velocities for 889 Late-Type Stars", The Astrophysical Journal Supplement Series , 141 (2 ): 503–522, arXiv :astro-ph/0112477 , Bibcode :2002ApJS..141..503N , doi :10.1086/340570 , S2CID 51814894 .
^ 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 :0811.3982 , Bibcode :2009A&A...501..941H , doi :10.1051/0004-6361/200811191 , S2CID 118577511 .
^ a b c d e f g 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 :1002.4268 , Bibcode :2010MNRAS.405.1907B , doi :10.1111/j.1365-2966.2010.16575.x , S2CID 118495267
^ a b Vican, Laura (June 2012), "Age Determination for 346 Nearby Stars in the Herschel DEBRIS Survey", The Astronomical Journal , 143 (6 ): 135, arXiv :1203.1966 , Bibcode :2012AJ....143..135V , doi :10.1088/0004-6256/143/6/135 , S2CID 118539505 .
^ "* gam Ser" . SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2007-01-23 .
^ "The Colour of Stars" , Australia Telescope, Outreach and Education , Commonwealth Scientific and Industrial Research Organisation , December 21, 2004, archived from the original on 2012-03-18, retrieved 2012-01-16 .
^ Kunitzsch, P., Smart, T. (2006), A Dictionary of Modern Star names: A Short Guide to 254 Star names and Their Derivations (Second Revised ed.), Cambridge, MA: Sky Publishing, p. 31, ISBN 1-931559-44-9 {{citation }}
: CS1 maint: multiple names: authors list (link )
^ Allen, R. H. (1963), Star Names: Their Lore and Meaning (Reprint ed.), New York, NY: Dover Publications Inc, p. 243 , ISBN 0-486-21079-0 , retrieved 2010-12-12
^ Jack W. Rhoads - Technical Memorandum 33-507-A Reduced Star Catalog Containing 537 Named Stars , Jet Propulsion Laboratory, California Institute of Technology; November 15, 1971
^ (in Chinese) 中國星座神話 , written by 陳久金. Published by 台灣書房出版有限公司, 2005, ISBN 978-986-7332-25-7 .
^ Star Names - R.H.Allen p.376
^ (in Chinese) AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年6 月24 日 Archived 2011-05-22 at the Wayback Machine
^ (in Chinese) English-Chinese Glossary of Chinese Star Regions, Asterisms and Star Name Archived August 10, 2010, at the Wayback Machine , Hong Kong Space Museum. Accessed on line November 23, 2010.
^ Ian Ridpath's Startales - Capricornus the Sea Goat
External links [ edit ]
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175541 (Kaveh)
AS 296
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Gliese 701
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IRAS 18418-0440
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PG 1605+072
PSR B1534+11
PSR J1719−1438
Ross 508
Serpens FIRS 1
Serpens SVS 20
Serpens X-1
W40 IRS 1A South
CoRoT-27b
HD 168746 b (Onasilos)
HD 175541 b (Kavian)
ω Serpentis b
NGC 6605
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L183
L483
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Sh2-54
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S68
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Arp 72
Arp 220
4C 11.50
CGCG 049-033
Hoag's Object
IC 4537
IC 4588
IRAS 15107+0724
NRAO 530
PDS 456
PG 1553+113
PGC 54493
PKS 1546+027
AWM 4
MKW 3s
Seyfert's Sextet
SN 2004dk
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