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词条 12 Andromedae
释义

  1. References

{{Starbox begin
| name = 12 Andromedae
}}{{Starbox observe
| epoch = J2000
| constell = Andromeda
| ra = {{RA|23|20|53.2646}}
| dec = {{DEC|+38|10|56.384}}
| appmag_v = 5.87[3]
}}{{Starbox character
| class = F5 V[3][5]
| b-v = 0.45[6]
| u-b =
| v-i = 0.54[5]
| variable =
}}{{Starbox astrometry
| radial_v = {{Val|−10.5|0.3}}[8]
| prop_mo_ra ={{Val|129.320|0.024}}
| prop_mo_dec = {{Val|-60.049|0.021}}
| parallax = 23.83
| p_error = 0.34
| parallax_footnote =
| absmag_v = 2.66[5]
}}{{Starbox detail
| mass = 1.25[13]
| radius =
| luminosity = 7.38[5]
| gravity = {{Val|3.92|0.14}}[13]
| temperature = {{Val|6454|219|fmt=commas}}[13]
| metal_fe = +0.00[17]
| rotational_velocity = 12[6]
| age_gyr = 2.548[13]
}}{{Starbox catalog
| names = {{odlist | F=12 And | BD=+37° 4817 | FK5=1610 | HD=220117 | HIP=115280 | HR=8885 | SAO=73190 | WDS=J23209+3811A }}[1]
}}{{Starbox reference
| Simbad = 12+And
}}{{Starbox end}}12 Andromedae is a single[3] star in the northern constellation of Andromeda. The designation is from the star catalogue of English astronomer John Flamsteed, first published in 1712. It has an apparent visual magnitude of 5.87,[3] which indicates it is just visible to the naked eye under good seeing conditions. An annual parallax shift of 23.83 mas provides a distance estimate of 137 light years. The star is moving closer to the Sun with a radial velocity of −10.5 km/s.[8]

This is an ordinary F-type main-sequence star with a stellar classification of F5 V.[3] It is about 2.5[13] billion years old and is spinning with a projected rotational velocity of 12 km/s.[6] The abundance of iron is similar to that in the Sun.[17] The star has an estimated 1.25[13] times the mass of the Sun and is radiating just over 7[5] times the Sun's luminosity from its photosphere at an effective temperature of around 6,454 K.[13]

References

1. ^{{cite simbad | title=12 And | access-date=2018-02-01 }}
2. ^{{citation | last1=Gontcharov | first1=G. A. | title=Pulkovo Compilation of Radial Velocities for 35495 Hipparcos stars in a common system | journal=Astronomy Letters | postscript=. | volume=32| issue=11| pages=759–771| date=November 2006 | doi=10.1134/S1063773706110065| bibcode=2006AstL...32..759G | arxiv=1606.08053 }}
3. ^{{citation | title=XHIP: An extended hipparcos compilation | last1=Anderson | first1=E. | last2=Francis | first2=Ch. | journal=Astronomy Letters | volume=38 | issue=5 | pages=331 | year=2012 | bibcode=2012AstL...38..331A | doi=10.1134/S1063773712050015 | arxiv=1108.4971 | postscript=. }}
4. ^{{citation | title=The Ages of Early-type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets | journal=The Astrophysical Journal | last1=David | first1=Trevor J. | last2=Hillenbrand | first2=Lynne A. | volume=804 | issue=2 | pages=146 | year=2015 | doi=10.1088/0004-637X/804/2/146 | bibcode=2015ApJ...804..146D | arxiv=1501.03154 | postscript=. }}
5. ^{{citation | last1=Eggleton | first1=P. P. | last2=Tokovinin | first2=A. A. | title=A catalogue of multiplicity among bright stellar systems | journal=Monthly Notices of the Royal Astronomical Society | volume=389 | issue=2 | pages=869–879 | date=September 2008 | doi=10.1111/j.1365-2966.2008.13596.x | bibcode=2008MNRAS.389..869E | postscript=. | arxiv=0806.2878 }}
6. ^{{citation | display-authors=1 | last1=Takeda | first1=Yoichi | last2=Sato | first2=Bun'ei | last3=Kambe | first3=Eiji | last4=Masuda | first4=Seiji | last5=Izumiura | first5=Hideyuki | last6=Watanabe | first6=Etsuji | last7=Ohkubo | first7=Michiko | last8=Yanagisawa | first8=Kenshi | last9=Yasaka | first9=Yoshiro | title=High-Dispersion Spectra Collection of Nearby F-K Stars at Okayama Astrophysical Observatory: A Basis for Spectroscopic Abundance Standards | journal=Publications of the Astronomical Society of Japan | volume=57 | issue=1 | pages=13–25 | date=February 2005 | postscript=. | bibcode=2005PASJ...57...13T | doi=10.1093/pasj/57.1.13 }}
7. ^{{citation | last=Takeda | first=Yoichi | title=Fundamental Parameters and Elemental Abundances of 160 F-G-K Stars Based on OAO Spectrum Database | journal=Publications of the Astronomical Society of Japan | volume=59 | issue=2 | pages=335–356 | date=April 2007 | bibcode=2007PASJ...59..335T | doi=10.1093/pasj/59.2.335 | postscript=. }}
[2][3][4][5][6][7]
}}{{Stars of Andromeda}}

7 : F-type main-sequence stars|Andromeda (constellation)|Durchmusterung objects|Flamsteed objects|Henry Draper Catalogue objects|Hipparcos objects|HR objects

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