| 释义 |
- References
{{DISPLAYTITLE:Omega1 Cygni}}For other star systems with this Bayer designation, see ω Cygni. {{Starbox begin
| name = Omega1 Cygni
}}{{Starbox observe
| epoch = J2000.0
| equinox = J2000.0 (ICRS)
| constell = Cygnus
| ra = {{RA|20|30|03.54116}}
| dec = {{DEC|+48|57|05.6446}}
| appmag_v = +4.94[3]
}}{{Starbox character
| class = B2.5 IV[4]
| b-v = −0.09[3]
| u-b = −0.68[3]
| r-i =
| variable = β Cep[7]
}}{{Starbox astrometry
| radial_v = {{Val|−21.9|2.0}}[8]
| prop_mo_ra = +10.63
| prop_mo_dec = +7.22
| parallax = 3.59
| p_error = 0.18
| parallax_footnote =
| absmag_v = −2.28[12]
}}{{Starbox detail
| source =
| mass = {{Val|8.1|0.2}}[4]
| radius =
| luminosity = 972[14]
| luminosity_bolometric = 5,924[15]
| temperature = 19,525[15]
| gravity =
| metal_fe =
| rotational_velocity = 145[17]
| age_myr = {{Val|33.2|4.5}}[4]
}}{{Starbox catalog
| names = ω1 Cyg, 45 Cygni, BD+48° 3142, FK5 3641, HD 195556, HIP 101138, HR 7844, SAO 49712, V2014 Cygni.[19]
}}{{Starbox reference
|Simbad=ome01+Cyg
}}{{Starbox end}}Omega1 Cygni, Latinized from ω1 Cygni, is the Bayer designation for a solitary[20] star in the northern constellation of Cygnus. It is visible to the naked eye with an apparent visual magnitude of 4.94.[3] Based upon an annual parallax shift of 3.59 mas,[ it is estimated to lie roughly 950 light years from the Sun. Relative to its neighbors, this star has a peculiar velocity of {{Val|25.7|2.2|u=km/s}}.[8]]This is a somewhat evolved B-type subgiant star with a stellar classification of B2.5 IV.[4] Telting and colleagues report it as a Beta Cephei variable with a high degree of confidence as they found regular pulsations in its spectrum in a high-resolution spectroscopy study published in 2006.[7] Its brightness varies irregularly by 0.034 magnitude every 1.137 days.[26] References1. ^1 {{citation | title=XHIP: An extended hipparcos compilation | last1=Anderson | first1=E. | last2=Francis | first2=Ch. | journal=Astronomy Letters | volume=38 | issue=5 | pages=331 | year=2012 | bibcode=2012AstL...38..331A | doi=10.1134/S1063773712050015 | arxiv=1108.4971 | postscript=. }}
2. ^1 {{citation | title=A systematic study of variability among OB-stars based on HIPPARCOS photometry | journal=Astronomy and Astrophysics | display-authors=1 | last1=Lefèvre | first1=L. | last2=Marchenko | first2=S. V. | last3=Moffat | first3=A. F. J. | last4=Acker | first4=A. | volume=507 | issue=2 | pages=1141 | year=2009 | postscript=. | bibcode=2009A&A...507.1141L | doi=10.1051/0004-6361/200912304 }}
3. ^1 {{citation | 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 | postscript=. }}
4. ^1 2 {{citation | display-authors=1 | last1=Hohle | first1=M. M. | last2=Neuhäuser | first2=R. | last3=Schutz | first3=B. F. | title=Masses and luminosities of O- and B-type stars and red supergiants | journal=Astronomische Nachrichten | volume=331 | issue=4 | page=349 | date=April 2010 | doi=10.1002/asna.200911355 | bibcode=2010AN....331..349H | arxiv=1003.2335 | postscript=. }}
5. ^1 2 {{citation | title=Galactic kinematics from a sample of young massive stars | last1=Bobylev | first1=V. V. | last2=Bajkova | first2=A. T. | journal=Astronomy Letters | postscript=. | volume=39 | issue=8 | pages=532–549 | date=August 2013 | doi=10.1134/S106377371308001X | bibcode=2013AstL...39..532B |arxiv = 1307.1677 }}
6. ^1 {{citation | display-authors=1 | last1=McDonald | first1=I. | last2=Zijlstra | first2=A. A. | last3=Boyer | first3=M. L. | title=Fundamental Parameters and Infrared Excesses of Hipparcos Stars | journal=Monthly Notices of the Royal Astronomical Society | volume=427 | issue=1 | pages=343–57 | date=2012 | bibcode=2012MNRAS.427..343M | arxiv=1208.2037 | doi=10.1111/j.1365-2966.2012.21873.x | postscript=. }}
7. ^1 2 3 4 {{citation | display-authors=1 | last1=Tetzlaff | first1=N. | last2=Neuhäuser | first2=R. | last3=Hohle | first3=M. M. | title=A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun | doi=10.1111/j.1365-2966.2010.17434.x | postscript=. | journal=Monthly Notices of the Royal Astronomical Society | volume=410 | pages=190 | year=2011 | arxiv=1007.4883 | bibcode=2011MNRAS.410..190T }}
8. ^1 {{citation | last1=Abt | first1=Helmut A. | last2=Levato | first2=Hugo | last3=Grosso | first3=Monica | title=Rotational Velocities of B Stars | journal=The Astrophysical Journal | postscript=. | volume=573 | issue=1 | pages=359–365 | date=July 2002 | doi=10.1086/340590 | bibcode=2002ApJ...573..359A }}
9. ^1 2 3 4 {{citation | last1=Mermilliod | first1=J.-C. | title=Compilation of Eggen's UBV data, transformed to UBV (unpublished) | journal=Catalogue of Eggen's UBV data | year=1986 | publisher=SIMBAD | bibcode=1986EgUBV........0M | postscript=. }}
10. ^1 2 {{citation | display-authors=1 | last1=Telting | first1=J. H. | last2=Schrijvers | first2=C. | last3=Ilyin | first3=I. V. | last4=Uytterhoeven | first4=K. | last5=De Ridder | first5=J. | last6=Aerts | first6=C. | last7=Henrichs | first7=H. F. | title=A high-resolution spectroscopy survey of β Cephei pulsations in bright stars | journal=Astronomy and Astrophysics | postscript=. | volume=452 | issue=3 | pages=945–953 |date=June 2006 | doi=10.1051/0004-6361:20054730 | bibcode=2006A&A...452..945T }}
11. ^1 {{cite simbad | title=* ome01 Cyg -- Pulsating variable Star | accessdate=2017-02-22 | postscript=. }}
[1][2][3][4][5][6][7][8][9][10][11]
}}{{Stars of Cygnus|state=collapsed}} 10 : B-type subgiants|Beta Cephei variables|Cygnus (constellation)|Bayer objects|Flamsteed objects|Henry Draper Catalogue objects|Hipparcos objects|HR objects|Objects with variable star designations|Durchmusterung objects |