| 词条 | 6 Cassiopeiae |
| 释义 |
| image={{Location mark |image=Cassiopeia constellation map.svg|alt=|float=center|width=280 |label=|position=right |mark=Red circle.svg|mark_width=10|mark_link=6 Cas|x=630|y=443 }} |caption=Location of 6 Cassiopeiae (circled) }}{{Starbox observe | epoch = J2000.0 | constell = Cassiopeia | ra = {{RA|23|48|50.171}}[1] | dec = {{DEC|+62|12|52.26}}[1] | appmag_v = +5.43[3] {{nowrap|(5.34 - 5.45[4])}} }}{{Starbox character | class = A2.5 Ia+[1] | b-v = +0.67[2] | u-b = −0.02[2] | variable=α Cyg[3] }}{{Starbox astrometry | radial_v = | prop_mo_ra = −3.57 ± 0.35[4] | prop_mo_dec = −1.57 ± 0.33[4] | parallax = 0.53 | p_error = 0.37 | parallax_footnote = [4] | dist_pc = 2,510[5] | absmag_v = −8.30[6] }}{{Starbox detail | mass = 22.0[6] | radius = 217[6] | luminosity = 200,000[7] | temperature = 10,023 ± 227[17] | metal_fe = 0.29[17] | gravity = 1.59[8] | rotational_velocity = 50[6] | age = }}{{Starbox catalog | names = 6 Cas, V566 Cas, HR 9018, HD 223385, BD+61°2533, HIP 117447, SAO 20869 }}{{Starbox reference | Simbad = 6+Cas }}{{Starbox end}} 6 Cassiopeiae (6 Cas) is a double star in the constellation Cassiopeia. System6 Cassiopeiae A is a white A2.5 type hypergiant. It is about 25 times as massive as the Sun and 200,000 times as luminous. The star is slightly and erratically variable, an Alpha Cygni variable. 6 Cas A has a number of close companions, most notably an 8th magnitude O class bright giant at only 1.5". Its spectral type is O9.75 and its absolute magnitude is −5.8.[9] Both are considered to be members of the Cassiopeia OB5 stellar association at a distance of around 8,000 light-years.[10] Variability6 Cas A is an α Cyg variable, pulsating erratically between 5.34 and 5.45. The strongest period detected in one study was 37 days.[11] It has the variable star designation V566 Cassiopeiae.[3] References1. ^{{cite journal|last1=Chentsov|first1=E. L.|last2=Ermakov|first2=S. V.|last3=Klochkova|first3=V. G.|last4=Panchuk|first4=V. E.|last5=Bjorkman|first5=K. S.|last6=Miroshnichenko|first6=A. S.|title=An atlas of spectra of B6-A2 hypergiants and supergiants from 4800 to 6700Å|journal=Astronomy and Astrophysics|volume=397|issue=3|year=2003|pages=1035–1042|issn=0004-6361|doi=10.1051/0004-6361:20021430|bibcode = 2003A&A...397.1035C }} 2. ^1 2 {{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|pages=0|author1=Ducati|first1=J. R.|year=2002}} 3. ^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|pages=B/gcvs|display-authors=etal|author1=Samus|first1=N. N.|last2=Durlevich|first2=O. V.|year=2009}} 4. ^1 2 3 4 {{cite journal | title=Validation of the new Hipparcos reduction | url=http://www.aanda.org/articles/aa/full/2007/41/aa8357-07/aa8357-07.html | last1=van Leeuwen | first1=F. | journal=Astronomy and Astrophysics | volume=474 | issue=2 | pages=653–664 | year=2007 | arxiv=0708.1752 | bibcode=2007A&A...474..653V | doi=10.1051/0004-6361:20078357 }}Vizier catalog entry 5. ^{{cite journal|bibcode=1995AstL...21...10M|title=A new list of OB associations in our galaxy|journal=Astronomy Letters|volume=21|issue=1|pages=10|author1=Mel'Nik|first1=A. M.|last2=Efremov|first2=Yu. N.|year=1995}} 6. ^1 2 3 {{cite journal|bibcode=2003IAUS..212..255V|title=Search for magnetic fields in A-type supergiants|journal=A Massive Star Odyssey: From Main Sequence to Supernova|volume=212|pages=255|author1=Verdugo|first1=Eva|last2=Talavera|first2=Antonio|last3=Gómez De Castro|first3=Ana I.|last4=Henrichs|first4=Huib F.|year=2003}} 7. ^{{cite journal|bibcode=1997A&A...320..196A|title=Radiation driven wind models for A, F and G supergiants|journal=Astronomy and Astrophysics|volume=320|pages=196|author1=Achmad|first1=L.|last2=Lamers|first2=H. J. G. L. M.|last3=Pasquini|first3=L.|year=1997}} 8. ^1 2 {{Cite journal | doi = 10.1051/0004-6361/201116769| title = The atmospheric parameters and spectral interpolator for the MILES stars| journal = Astronomy & Astrophysics| volume = 531| pages = A165| year = 2011| last1 = Prugniel | first1 = P. | last2 = Vauglin | first2 = I.| last3 = Koleva | first3 = M.|arxiv = 1104.4952 |bibcode = 2011A&A...531A.165P }} 9. ^{{cite journal|bibcode=1990AISAO..29..101B|title=The atmosphere of the supergiant 6 Cas. IV. The spectrum and radial velocities of the visual companion|journal=Astrofiz. Issled. Izv. Spets. Astrofiz. Obs|volume=29|pages=101|author1=Barsukova|first1=E. A.|last2=Chentsov|first2=E. L.|year=1990}} 10. ^{{cite journal|bibcode=1994BSAO...38..103B|title=Hypergiant 6 Cas and association Cas OB5|journal=Bulletin of the Special Astrophysical Observatory|volume=38|pages=103|author1=Bartaya|first1=R. A.|last2=Chargeishvili|first2=K. B.|last3=Chentsov|first3=E. L.|last4=Shkhagosheva|first4=Z. U.|year=1994}} 11. ^{{cite journal|bibcode= 2002MNRAS.331...45K |title= New periodic variables from the Hipparcos epoch photometry |journal= Monthly Notices of the Royal Astronomical Society |volume= 331 |issue= 1 |pages= 45–59 |author1= Koen |first1= Chris |last2= Eyer |first2= Laurent |year= 2002 |doi= 10.1046/j.1365-8711.2002.05150.x |arxiv = astro-ph/0112194 }} External links
11 : A-type hypergiants|Cassiopeia (constellation)|Flamsteed objects|HR objects|Henry Draper Catalogue objects|Hipparcos objects|Durchmusterung objects|Objects with variable star designations|Alpha Cygni variables|Multiple stars|O-type bright giants |
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