| 词条 | T Cephei |
| 释义 |
| image= | caption=Region of NGC 7023, with T Cephei marked on the full-size image | credit=NASA, ESA and Digitized Sky Survey 2 }}{{Starbox observe | epoch=J2000 | ra={{RA|21|09|31.78089}}[1] | dec={{DEC|+68|29|27.2038}}[1] | appmag_v=5.2 - 11.3[3] | constell=Cepheus }}{{Starbox character | class=M6-9e[2] | b-v=+1.49[3] | u-b=+0.33[3] | variable=Mira[7] }}{{Starbox astrometry | radial_v=−8.03[4] | prop_mo_ra=−44.145[9] | prop_mo_dec=−42.308[9] | parallax=5.6912 | p_error=0.4004 | parallax_footnote=[5] | dist_pc= | absmag_v= }}{{Starbox detail | mass= | radius={{val|329|70|50}}[6] | luminosity=5,700[7] | temperature=2,400[7] | metal= | rotation= | age= }}{{Starbox catalog | names= T Cephei, HR 8113, HD 202012, HIP 104451, BD+67°1291, GC 29611, SAO 19229, GSC 04460-02400 }}{{Starbox reference | Simbad = T+Cep }}{{Starbox end}}T Cephei is a Mira variable star in the constellation Cepheus. Located approximately {{convert|570|± |40|ly|pc|abbr=off}} distant, it varies between magnitudes 5.2 and 11.3 over a period of around 388 days.[7][8] Stellar PropertiesT Cephei is a red giant of spectral type M6-9e with an effective temperature 2,400 K, a radius of {{solar radius|329}}, a mass of {{solar mass|1.5-1.8}}{{cn|date=June 2018}}, and a luminosity of {{solar luminosity|5,700}}. If it were in the place of the Sun, its photosphere would at least engulf the orbit of Mars. This star is believed to be in a late stage of its life, blowing off its own sooty atmosphere to form a white dwarf in a distant future. See also
References1. ^1 {{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 }} 2. ^{{cite journal|bibcode=1974ApJS...28..271K|title=Revised Catalog of Spectra of Mira Variables of Types ME and Se|journal=Astrophysical Journal Supplement|volume=28|pages=271|author1=Keenan|first1=Philip C.|last2=Garrison|first2=Robert F.|last3=Deutsch|first3=Armin J.|year=1974|doi=10.1086/190318}} 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=2005A&A...430..165F|title=Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters|journal=Astronomy and Astrophysics|volume=430|pages=165|author1=Famaey|first1=B.|last2=Jorissen|first2=A.|last3=Luri|first3=X.|last4=Mayor|first4=M.|last5=Udry|first5=S.|last6=Dejonghe|first6=H.|last7=Turon|first7=C.|year=2005|doi=10.1051/0004-6361:20041272|arxiv = astro-ph/0409579 }} 5. ^1 2 {{cite DR2|2270451142960378752}} 6. ^{{cite journal|journal=SPIE|bibcode=2003SPIE.4838..181W|title=JHK-band spectro-interferometry of T Cep with the IOTA interferometer|volume=4838|pages=181–184|date=2003|doi=10.1117/12.458659|series=Interferometry for Optical Astronomy II|last1=Weigelt|first1=Gerd|last2=Beckmann|first2=Udo|last3=Berger|first3=Jean-Philippe|last4=Bloecker|first4=Thomas|last5=Brewer|first5=Michael K.|last6=Hofmann|first6=Karl-Heinz|last7=Lacasse|first7=Marc G.|last8=Malanushenko|first8=Victor|last9=Millan-Gabet|first9=Rafael|last10=Monnier|first10=John D.|last11=Ohnaka|first11=Keiichi|last12=Pedretti|first12=Ettore|last13=Schertl|first13=Dieter|last14=Schloerb|first14=F. Peter|last15=Scholz|first15=Michael|last16=Traub|first16=Wesley A.|last17=Yudin|first17=Boris|display-authors=9}} 7. ^1 2 3 {{cite journal|arxiv=1506.09065|bibcode=2015A&A...581A..60D|title=New observations and models of circumstellar CO line emission of AGB stars in the Herschel SUCCESS programme|journal=Astronomy & Astrophysics|volume=581|pages=A60|author1=Danilovich|first1=T.|last2=Teyssier|first2=D.|last3=Justtanont|first3=K.|last4=Olofsson|first4=H.|last5=Cerrigone|first5=L.|last6=Bujarrabal|first6=V.|last7=Alcolea|first7=J.|last8=Cernicharo|first8=J.|last9=Castro-Carrizo|first9=A.|last10=García-Lario|first10=P.|last11=Marston|first11=A.|year=2015|doi=10.1051/0004-6361/201526705}} 8. ^1 {{cite web|url=http://www.aavso.org/vsx/index.php?view=detail.top&oid=8355 |title=T Cep|author=VSX|date=4 January 2010|work=AAVSO Website|publisher=American Association of Variable Star Observers|accessdate=1 July 2014}} External links
9 : Cepheus (constellation)|Mira variables|Objects with variable star designations|Henry Draper Catalogue objects|M-type giants|HR objects|Hipparcos objects|Durchmusterung objects|Emission-line stars |
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