| 词条 | Gamma Monocerotis |
| 释义 |
|image={{Location mark |image=Monoceros constellation map.svg|alt=|float=center|width=280 |label=|position=right |mark=Red circle.svg|mark_width=10|mark_link=Gamma Monocerotis |x=685|y=468 }} |caption=Location of γ Monocerotis (circled) }}{{Starbox observe | epoch= J2000.0 | equinox= J2000.0 (ICRS) | constell= Monoceros | ra= {{RA|06|14|51.33367}}[1] | dec= {{DEC|−06|16|29.1880}}[1] | appmag_v= 3.96[2]}}{{Starbox character | class = K1.5IIIBa0.3[3] | b-v = +1.31[2] | u-b = +1.42[2] }}{{Starbox astrometry | radial_v= {{Val|−4.8|0.7}}[4] | prop_mo_ra= −4.69[1] | prop_mo_dec= −19.30[1] | parallax= 6.55 | p_error = 0.19 | parallax_footnote = [1] | absmag_v = -1.93[5] }}{{Starbox detail | temperature = 4,375[6] | luminosity = 1021[5] | rotational_velocity = 4.0[7] | gravity = 1.61[6] | metal_fe = −0.15[6] }}{{Starbox catalog | names = {{odlist | B=γ Mon | F=5 Monocerotis | BD=−06° 1469 | FK5=2475 | HD=43232 | HIP=29651 | HR=2227 | SAO=133012 | GC=7986 | CCDM=J06149-0616A | WDS=J06149-0617A }} }}{{Starbox reference |Simbad = gam+Mon}}{{Starbox end}}γ Monocerotis, Latinised as Gamma Monocerotis, is a binary star[8] system in the equatorial constellation of Monoceros. Based upon an annual parallax shift of 6.55 mas,[1] it is located roughly 500 light years from the Sun. It can be viewed with the naked eye, having an apparent visual magnitude of 3.96.[2] Gamma Monocerotis is moving away from the Sun with a radial velocity of −5 km/s.[4] This is an evolved K-type giant star with a stellar classification of {{nowrap|K1.5 III Ba0.3}}.[3] The Ba0.3 suffix indicates this is a mild barium star, which means the spectrum displays abnormal abundance of s-process elements, including barium. These were deposited by an orbiting companion as it passed through the asymptotic giant branch stage. The companion is now a white dwarf star.[9] It has reported companions B, at separation 53.7" and magnitude 13.1, and C, at separation 47.9" and magnitude 13.6.[10] References1. ^1 2 3 4 5 {{cite journal | arxiv=0708.1752 | bibcode=2007A&A...474..653V | doi=10.1051/0004-6361:20078357 | title=Validation of the new Hipparcos reduction | journal=Astronomy and Astrophysics | volume=474 | issue=2 | pages=653 | year=2007 | last1=Van Leeuwen | first1=F. }} Vizier catalog entry {{Stars of Monoceros}}2. ^1 2 3 {{cite journal |bibcode=2002yCat.2237....0D |title=VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system |journal=CDS/ADC Collection of Electronic Catalogues |volume=2237 |author1=Ducati |first1=J. R. |year=2002 }} 3. ^1 {{cite journal | bibcode=1995yCat.5050....0H | title=VizieR Online Data Catalog: Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991) | journal=VizieR On-line Data Catalog: V/50. Originally published in: 1964BS....C......0H | volume=5050 | author1=Hoffleit | first1=D. | last2=Warren | first2=W. H. | year=1995 }} 4. ^1 {{Cite journal | doi=10.1134/S1063773706110065 | bibcode=2006AstL...32..759G| title=Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system| journal=Astronomy Letters| volume=32| issue=11| pages=759| year=2006| last1=Gontcharov| first1=G. A.|arxiv = 1606.08053 }} 5. ^1 {{cite journal | bibcode=2012AstL...38..331A | doi=10.1134/S1063773712050015 | arxiv=1108.4971 | title=XHIP: An extended hipparcos compilation | journal=Astronomy Letters | volume=38 | issue=5 | pages=331 | year=2012 | last1=Anderson | first1=E. | last2=Francis | first2=Ch. }} Vizier catalog entry 6. ^1 2 {{cite journal | bibcode=2011A&A...525A..71W | doi=10.1051/0004-6361/201015014 | arxiv=1009.1491 | title=Coudé-feed stellar spectral library – atmospheric parameters | journal=Astronomy & Astrophysics | volume=525 | pages=A71 | year=2010 | last1=Wu | first1=Yue | last2=Singh | first2=H. P. | last3=Prugniel | first3=P. | last4=Gupta | first4=R. | last5=Koleva | first5=M. }} 7. ^{{cite journal | bibcode=2014A&A...561A.126D | doi=10.1051/0004-6361/201220762 | arxiv=1312.3474 | title=A catalog of rotational and radial velocities for evolved stars | journal=Astronomy & Astrophysics | volume=561 | pages=A126 | year=2014 | last1=De Medeiros | first1=J. R. | last2=Alves | first2=S. | last3=Udry | first3=S. | last4=Andersen | first4=J. | last5=Nordström | first5=B. | last6=Mayor | first6=M. }} Vizier catalog entry 8. ^{{cite journal | 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 |arxiv = 0806.2878 }} 9. ^{{citation | title=Chemical abundance analysis of 19 barium stars | display-authors=1 | last1=Yang | first1=Guo-Chao | last2=Liang | first2=Yan-Chun | last3=Spite | first3=Monique | last4=Chen | first4=Yu-Qin | last5=Zhao | first5=Gang | last6=Zhang | first6=Bo | last7=Liu | first7=Guo-Qing | last8=Liu | first8=Yu-Juan | last9=Liu | first9=Nian | last10=Deng | first10=Li-Cai | last11=Spite | first11=Francois | last12=Hill | first12=Vanessa | last13=Zhang | first13=Cai-Xia | journal=Research in Astronomy and Astrophysics | volume=16 | issue=1 | id=19 | date=January 2016 | doi=10.1088/1674-4527/16/1/019 | bibcode=2016RAA....16...19Y | arxiv=1602.08704 | postscript=. }} 10. ^{{cite journal | bibcode=2001AJ....122.3466M | doi=10.1086/323920 | title=The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog | journal=The Astronomical Journal | volume=122 | issue=6 | pages=3466 | year=2001 | last1=Mason | first1=Brian D. | last2=Wycoff | first2=Gary L. | last3=Hartkopf | first3=William I. | last4=Douglass | first4=Geoffrey G. | last5=Worley | first5=Charles E. }} Vizier catalog entry 9 : K-type giants|Barium stars|Monoceros (constellation)|Bayer objects|Flamsteed objects|Durchmusterung objects|Henry Draper Catalogue objects|Hipparcos objects|HR objects |
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