| 词条 | S Muscae |
| 释义 |
| name= S Muscae }}{{Starbox image | image={{Location mark |image=Musca constellation map.svg|alt=|float=center|width=280 |label=|position=right |mark=Red circle.svg|mark_width=8|mark_link=S Mus|x=576|y=406 }} |caption=Location of S Muscae (circled) }}{{Starbox observe | epoch=J2000 | ra={{RA|12|12|47.01834}}[1] | dec={{DEC|−70|09|06.4363}}[1] | appmag_v=6.394[3] {{nowrap|(5.89 - 6.49[4])}} |constell= Musca }}{{Starbox character | class={{nowrap|F6Ib (F6-G0[4]) + B5V[2]}} | b-v=+1.00[3] | u-b=+0.66[3] | variable=δ Cepheid[4] }}{{Starbox astrometry | radial_v=−1.91[4] | prop_mo_ra=−7.79[1] | prop_mo_dec=−0.60[1] | parallax=1.99 | p_error=0.84 | parallax_footnote=[1] | dist_pc=863[3] | absmag_v=−4.01[5] }}{{Starbox orbit | reference = [5][6] | primary = | name = | period = | period_unitless = 504.9 ± 0.07 | axis = | axis_unitless = 794 AU | eccentricity = 0.08 ± 0.002 | inclination = 32 ± 1 | node = | periastron = | periarg = | periarg_primary = | k1 = 14.7 ± 0.2 | k2 = }}{{Starbox detail | mass=6.2[5] | radius=65.1[7] | luminosity=3,467[5] | temperature= | metal=+0.18[8] | rotation= | component2=companion | mass2=5.3[5] | temperature2=17,000[9] | age_myr2= }}{{Starbox catalog | names= S Mus, HR 4645, SAO 251791, CD−69°977, GSC 09231-00752, HD 106111, GC 16679, HIP 59551, AAVSO 1207-69 }}{{Starbox reference |Simbad=S+Muscae }}{{Starbox end}} S Muscae is a classical (δ) Cepheid variable star in the constellation Musca about 2,600 light years away. S Muscae is a yellow supergiant ranging between spectral types F6Ib and G0Ib and magnitudes 5.89 to 6.49 over a period of 9.66 days.[10] It is a luminous star around six times as massive as the Sun and 65.1 times the radius of the Sun. It is a binary star with a blue-white main sequence star companion likely to be of spectral type B3V to B5V with a mass of just over five solar masses,[11] one of the hottest and brightest companions of a Cepheid known. The two stars orbit each other every 505 days.[12] S Muscae has been found to lie within the faint star cluster ASCC 69.[13] 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 }} {{Musca}}2. ^{{cite journal|bibcode=2014yCat....1.2023S|title=VizieR Online Data Catalog: Catalogue of Stellar Spectral Classifications (Skiff, 2009-2014)|journal=VizieR On-line Data Catalog: B/mk. Originally published in: Lowell Observatory (October 2014)|volume=1|author1=Skiff|first1=B. A.|year=2014}} 3. ^1 {{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}} 4. ^{{cite journal|bibcode=2004A&A...424..727P|title=SB9: The ninth catalogue of spectroscopic binary orbits|journal=Astronomy and Astrophysics|volume=424|issue=2|pages=727|author1=Pourbaix|first1=D.|last2=Tokovinin|first2=A. A.|last3=Batten|first3=A. H.|last4=Fekel|first4=F. C.|last5=Hartkopf|first5=W. I.|last6=Levato|first6=H.|last7=Morrell|first7=N. I.|last8=Torres|first8=G.|last9=Udry|first9=S.|year=2004|doi=10.1051/0004-6361:20041213|arxiv = astro-ph/0406573 }} 5. ^1 2 3 4 {{cite journal|bibcode=2013AJ....146...93E|arxiv=1307.7123|title=Binary Cepheids: Separations and Mass Ratios in 5 M ⊙ Binaries|journal=The Astronomical Journal|volume=146|issue=4|pages=93|author1=Remage Evans|first1=Nancy|last2=Bond|first2=Howard E.|last3=Schaefer|first3=Gail H.|last4=Mason|first4=Brian D.|last5=Karovska|first5=Margarita|last6=Tingle|first6=Evan|year=2013|doi=10.1088/0004-6256/146/4/93}} 6. ^{{cite journal|bibcode=2004MNRAS.350...95P|title=The orbits of southern binary Cepheids|journal=Monthly Notices of the Royal Astronomical Society|volume=350|pages=95|author1=Petterson|first1=O. K. L.|last2=Cottrell|first2=P. L.|last3=Albrow|first3=M. D.|year=2004|doi=10.1111/j.1365-2966.2004.07555.x}} 7. ^1 2 {{cite journal|bibcode=2005AcA....55..247M|arxiv=astro-ph/0507076|title=Mean Angular Diameters and Angular Diameter Amplitudes of Bright Cepheids|journal=Acta Astronomica|volume=55|pages=247|author1=Moskalik|first1=P.|last2=Gorynya|first2=N. A.|year=2005}} 8. ^{{cite journal|bibcode= 2009A&A...504..959K|title= Observational studies of Cepheid amplitudes. I. Period-amplitude relationships for Galactic Cepheids and interrelation of amplitudes|journal= Astronomy and Astrophysics|volume= 504|issue= 3|pages= 959|author1= Klagyivik|first1= P.|last2= Szabados|first2= L.|year= 2009|doi= 10.1051/0004-6361/200811464|arxiv = 0908.3561 }} 9. ^{{cite journal|bibcode=2006ApJ...647.1387E|arxiv=astro-ph/0607489|title=Cepheid Masses: FUSE Observations of S Muscae|journal=The Astrophysical Journal|volume=647|issue=2|pages=1387|author1=Evans|first1=Nancy Remage|last2=Massa|first2=Derck|last3=Fullerton|first3=Alexander|last4=Sonneborn|first4=George|last5=Iping|first5=Rosina|year=2006|doi=10.1086/505519}} 10. ^1 2 3 {{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}} 11. ^{{cite journal|display-authors=4|bibcode = 1997ApJ...477..916B|doi=10.1086/303725|title = The Mass of the Classical Cepheid S Muscae|journal = The Astrophysical Journal|volume = 477|issue = 2|pages = 916|year = 1997|last1 = Bohm‐Vitense|first1 = Erika|last2 = Remage Evans|first2 = Nancy|last3 = Carpenter|first3 = Kenneth|last4 = Beck‐Winchatz|first4 = Bernhard|last5 = Robinson|first5 = Richard}} 12. ^{{cite journal|bibcode=1990PASP..102..551E|doi=10.1086/132668|title=The orbit and colors of the Cepheid S MUSCAE|journal=Publications of the Astronomical Society of the Pacific|volume=102|pages=551|year=1990|last1=Evans|first1=Nancy Remage}} 13. ^{{cite journal|bibcode=2014ApJ...785L..25E|arxiv=1403.6939|title=X-Ray Detection of the Cluster Containing the Cepheid S Mus|journal=The Astrophysical Journal Letters|volume=785|issue=2|pages=L25|author1=Remage Evans|first1=Nancy|last2=Pillitteri|first2=Ignazio|last3=Wolk|first3=Scott|last4=Guinan|first4=Edward|last5=Engle|first5=Scott|last6=Bond|first6=Howard E.|last7=Schaefer|first7=Gail H.|last8=Karovska|first8=Margarita|last9=Depasquale|first9=Joseph|last10=Tingle|first10=Evan|year=2014|doi=10.1088/2041-8205/785/2/L25}} 8 : Musca (constellation)|Classical Cepheid variables|Objects with variable star designations|HR objects|Henry Draper Catalogue objects|Hipparcos objects|Durchmusterung objects|Binary stars |
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