| 词条 | HR 2554 |
| 释义 |
| name = HR 2554 }}{{Starbox image | image={{Location mark |image=Carina constellation map.svg|alt=|float=center|width=320 |label=|position=right |mark=Red circle.svg|mark_width=10|mark_link=A Car |x=821|y=221 }} |caption=Location of A Carinae (circled) }}{{Starbox observe | epoch = J2000.0 | equinox = J2000.0 (ICRS) | constell = Carina | ra = {{RA|06|49|51.31414}}[1] | dec = {{DEC|−53|37|20.8182}}[1] | appmag_v= +4.40[3] {{nowrap|([4])}} }}{{Starbox character | class = G6II + A1V[2] | u-b = +0.61[3] | b-v = +0.92[3] | r-i = +0.45[3] | variable = EA[4] }}{{Starbox astrometry | radial_v = 26.0 ± 0.9[5] | prop_mo_ra = −1.99[1] | prop_mo_dec = 17.58[1] | parallax = 5.99 | p_error = 0.18 | parallax_footnote = [1] | dist_pc = 182[2] | absmag_v = −1.58[6] }}{{Starbox orbit | reference = [7] | period = | period_unitless =195.245 days | axis = | axis_unitless = | eccentricity = 0.00585 | inclination = 82.7 | node = | periastron = | periarg = | periarg_primary = | k1 = 24.2535 | k2 = 38.6[2] }}{{Starbox detail | source=[2] | component1=A | mass=3.14 | radius=31.3 | luminosity=537 | temperature=4,981 | metal= | gravity=1.94 | rotation= | component2=B | mass2=1.98 | radius2=1.9 | luminosity2=25 | temperature2=9,388 | metal2=−0.04 | gravity2=4,18 | rotation2= | age_myr2= }}{{Starbox catalog | names= A Carinae, V415 Car, CCDM J06499-5337, CD−53°1613, CPD−53°1168, GC 8972, GSC 08536-00794, HD 50337, HIP 32761, HR 2554, PPM 335506, SAO 234737, TYC 8536-794-1 }}{{Starbox reference | Simbad=V415+Car }}{{Starbox end}} HR 2554, also known as V415 Carinae and A Carinae, is an eclipsing spectroscopic binary of the Algol type in the constellation of Carina whose apparent visual magnitude varies by 0.06 magnitudes and is approximately 4.39 at maximum brightness. Its primary is a G-type bright giant star and its secondary is an A-type main sequence star. It is approximately 553 light years from Earth. HR 2554 AThe primary component, HR 2554 A, is a yellow G-type bright giant with a mean apparent magnitude of +4.4. HR 2554 BThe secondary component, HR 2554 B, is a white A-type main sequence dwarf, about three magnitudes fainter than the primary. HR 2554 binary systemHR 2554 has two components in orbit around each other, making it a binary star. The semi-major axis of the secondary's orbit is 2.17 arcseconds. The two components regularly eclipse each other, making A Carinae a variable star. Its brightness varies by 0.06 magnitudes with a period equal to its orbital period of 195 days.[4] References1. ^1 2 3 4 {{cite journal|bibcode=2007A&A...474..653V|title=Validation of the new Hipparcos reduction|journal=Astronomy and Astrophysics|volume=474|issue=2|pages=653|author1=Van Leeuwen|first1=F.|year=2007|doi=10.1051/0004-6361:20078357|arxiv = 0708.1752 }} {{Stars of Carina}}2. ^1 2 3 {{cite journal|bibcode=2001AJ....122..392B|title=Ultraviolet Eclipse Observations and Fundamental Parameters of the Binary HR 2554 (G6 II+A1 V)|journal=The Astronomical Journal|volume=122|pages=392|author1=Brown|first1=Alexander|last2=Bennett|first2=Philip D.|last3=Baade|first3=Robert|last4=Kirsch|first4=Thomas|last5=Reimers|first5=Dieter|last6=Hatzes|first6=Artie P.|last7=Kürster|first7=Martin|year=2001|doi=10.1086/321125}} 3. ^1 2 3 HR 2554, database entry, The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version), D. Hoffleit and W. H. Warren, Jr., CDS ID V/50. Accessed on line August 23, 2008. 4. ^1 2 {{cite journal|bibcode=2009yCat....102025S|title=VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)|journal=VizieR On-line Data Catalog: B/gcvs. Originally published in: 2009yCat....102025S|volume=1|display-authors=etal|author1=Samus|first1=N. N.|last2=Durlevich|first2=O. V.|year=2009}} 5. ^{{cite journal|bibcode=1953GCRV..C......0W|title=General catalogue of stellar radial velocities|journal=Washington|author1=Wilson|first1=Ralph Elmer|year=1953}} 6. ^{{citation | last1=Ammler-von Eiff | first1=M. | last2=Reiners | first2=A. | title=New measurements of rotation and differential rotation in A-F stars: are there two populations of differentially rotating stars? | journal=Astronomy & Astrophysics | arxiv=1204.2459 | volume=542 | page=A116 | date=June 2012 | postscript=. | doi=10.1051/0004-6361/201118724 | bibcode=2012A&A...542A.116A }} 7. ^{{cite journal|bibcode=2011MNRAS.410.1761K|title=Orbital solutions for six spectroscopic binaries with circular or nearly circular orbits|journal=Monthly Notices of the Royal Astronomical Society|volume=410|pages=1761|author1=Komonjinda|first1=Siramas|last2=Hearnshaw|first2=John B.|last3=Ramm|first3=David J.|year=2011|doi=10.1111/j.1365-2966.2010.17558.x}} 11 : Carina (constellation)|G-type bright giants|A-type main-sequence stars|Algol variables|Spectroscopic binaries|Bayer objects|Henry Draper Catalogue objects|Hipparcos objects|HR objects|Objects with variable star designations|Durchmusterung objects |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。