| 词条 | Gamma Sculptoris |
| 释义 |
| name = γ Sculptoris }}{{Starbox image |image={{Location mark |image=Sculptor constellation map.svg|alt=|float=center|width=280 |label=|position=right |mark=Red circle.svg|mark_width=10|mark_link=Gamma Sculptoris |x=830|y=373 }} |caption=Location of γ Sculptoris (circled) }}{{Starbox observe | epoch = J2000 | constell = Sculptor | ra = {{RA|23|18|49.44076}}[1] | dec = {{DEC|-32|31|55.2890}}[1] | appmag_v = 4.41[2] }}{{Starbox character | class = K1 III[3] | b-v = +1.13[4] | u-b = +1.06[4] }}{{Starbox astrometry | radial_v = +15.60[5] | prop_mo_ra = +20.13[1] | prop_mo_dec = −77.72[1] | parallax = 17.90 | p_error = 0.19 | parallax_footnote = [1] | absmag_v = 0.67[2] }}{{Starbox detail | mass = 1.60[6] | radius = 12[7] | temperature = {{Val|4578|24|fmt=commas}}[14] | luminosity = 72.41[2] | rotational_velocity = 1.7[8] | gravity = 2.45[6] | metal_fe = −0.06[6] | age_gyr = 2.47[9] }}{{Starbox catalog | names = {{odlist | B=γ Scl | CD=−33° 16476 | FK5=879 | GJ=9821 | HD=219784 | HIP=115102 | HR=8863 | SAO=214444 | GC=32450 | GSC=07510-01089 }}[10] }}{{Starbox reference | Simbad = Gamma+Sculptoris }}{{Starbox end}}Gamma Sculptoris, Latinized from γ Sculptoris, is a single,[11] orange-hued star in the constellation Sculptor. Based upon an annual parallax shift of 17.90 mas as seen from Earth,[1] this star is located about 182 light years from the Sun. It is bright enough to be visible to the naked eye with an apparent visual magnitude of 4.41.[2] It is moving away from the Sun with a radial velocity of +15.6 km/s.[5] This is an evolved K-type giant star with a stellar classification of K1 III.[3] At the age of 2.47[9] billion years it is a red clump star on the horizontal branch,[6] which means it is generating energy through helium fusion at its core. The star has 1.60[6] times the mass of the Sun and it has expanded to 12[7] times the Sun's radius. It is radiating 72[2] times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,578 K[9] 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=653–664 | year=2007 | last1=Van Leeuwen | first1=F. }} Vizier catalog entry {{Stars of Sculptor}}2. ^1 2 3 4 {{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 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 | bibcode=2014JAVSO..42..443M | title=Sloan Magnitudes for the Brightest Stars | journal=The Journal of the American Association of Variable Star Observers | volume=42 | pages=443 | author1=Mallama | first1=A. | year=2014 }}Vizier catalog entry 5. ^1 {{cite book | last=Wilson | first=R. E. | year=1953 | title=General Catalogue of Stellar Radial Velocities | publisher=Carnegie Institution for Science | bibcode=1953GCRV..C......0W | lccn=54001336 }} 6. ^1 2 3 4 {{cite journal | bibcode=2007MNRAS.382..553L | doi=10.1111/j.1365-2966.2007.11852.x | title=The abundances of nearby red clump giants | journal=Monthly Notices of the Royal Astronomical Society | volume=382 | issue=2 | pages=553 | year=2007 | last1=Liu | first1=Y. J. | last2=Zhao | first2=G. | last3=Shi | first3=J. R. | last4=Pietrzynski | first4=G. | last5=Gieren | first5=W. }} 7. ^1 {{cite journal | bibcode=1999A&A...352..555A | arxiv=astro-ph/9911002 | title=Fundamental parameters of nearby stars from the comparison with evolutionary calculations: Masses, radii and effective temperatures | journal=Astronomy and Astrophysics | volume=352 | pages=555–562 | author1=Allende Prieto | first1=C. | last2=Lambert | first2=D. L. | year=1999 }} Vizier catalog entry 8. ^{{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 9. ^1 2 3 {{cite journal | title=Abundances in the Local Region. I. G and K Giants | last1=Luck | first1=R. Earle | journal=Astronomical Journal | volume=150 | issue=3 | at=88 | year=2015 | bibcode=2015AJ....150...88L | doi=10.1088/0004-6256/150/3/88 |arxiv = 1507.01466 }}Vizier catalog entry 10. ^{{cite simbad |title=gam Scl |accessdate=2017-12-03}} 11. ^{{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 : K-type giants|Horizontal-branch stars|Sculptor (constellation)|Bayer objects|Durchmusterung objects|Gliese and GJ objects|Henry Draper Catalogue objects|Hipparcos objects|HR objects |
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