“19 Cephei”的意思、由来-开放百科全书

19 Cephei is a supergiant star in the northern circumpolar constellation of Cepheus. It has a spectral class of O9 and is a member of Cep OB2, an OB association of massive stars located about {{Convert|615|pc|ly}} from the Sun.

The spectrum of 19 Cephei shows line profile variability on an hourly and daily timescale. This is thought to be due to the changes in the stellar wind.^[4]

Double star catalogues list several companions for 19 Cephei. The Washington Double Star Catalog describes four companions: 11th magnitude stars 20" and 56" away, and two 15th magnitude stars 4-5" away.^[3] The Catalog of Components of Double and Multiple Stars gives only the two 11th magnitude stars.^[4]

A scattered cluster of faint stars has been detected associated with 19 Cephei. The brightest likely members apart from 19 Cep itself are 10th magnitude stars.^[5]

References

1. ^{{cite journal|bibcode= 2015AJ....149...26A|title= The Multiplicity of Massive Stars: A High Angular Resolution Survey with the Guidance Sensor|journal= The Astronomical Journal|volume= 149|pages= 26|author1= Aldoretta|first1= E. J.|last2= Caballero-Nieves|first2= S. M.|last3= Gies|first3= D. R.|last4= Nelan|first4= E. P.|last5= Wallace|first5= D. J.|last6= Hartkopf|first6= W. I.|last7= Henry|first7= T. J.|last8= Jao|first8= W.-C.|last9= Maíz Apellániz|first9= J.|last10= Mason|first10= B. D.|last11= Moffat|first11= A. F. J.|last12= Norris|first12= R. P.|last13= Richardson|first13= N. D.|last14= Williams|first14= S. J.|year= 2015|doi= 10.1088/0004-6256/149/1/26|arxiv = 1410.0021 }}
2. ^{{cite journal|bibcode=2006A&A...454..625P|arxiv=astro-ph/0604372|title=Bright OB stars in the Galaxy. III. Constraints on the radial stratification of the clumping factor in hot star winds from a combined Hα, IR and radio analysis|journal=Astronomy and Astrophysics|volume=454|issue=2|pages=625|author1=Puls|first1=J.|last2=Markova|first2=N.|last3=Scuderi|first3=S.|last4=Stanghellini|first4=C.|last5=Taranova|first5=O. G.|last6=Burnley|first6=A. W.|last7=Howarth|first7=I. D.|year=2006|doi=10.1051/0004-6361:20065073}}
3. ^{{cite journal|bibcode=2001AJ....122.3466M|title=The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog|journal=The Astronomical Journal|volume=122|issue=6|pages=3466|author1=Mason|first1=Brian D.|last2=Wycoff|first2=Gary L.|last3=Hartkopf|first3=William I.|last4=Douglass|first4=Geoffrey G.|last5=Worley|first5=Charles E.|year=2001|doi=10.1086/323920}}
4. ^{{cite journal|bibcode=1994CoORB.115....1D|title=Catalogue des composantes d'etoiles doubles et multiples (CCDM) premiere edition - Catalogue of the components of double and multiple stars (CCDM) first edition|journal=Com. de l'Observ. Royal de Belgique|volume=115|pages=1|author1=Dommanget|first1=J.|last2=Nys|first2=O.|year=1994}}
5. ^{{cite journal|bibcode= 2005A&A...440..403K|title= 109 new Galactic open clusters|journal= Astronomy and Astrophysics|volume= 440|pages= 403|author1= Kharchenko|first1= N. V.|last2= Piskunov|first2= A. E.|last3= Röser|first3= S.|last4= Schilbach|first4= E.|last5= Scholz|first5= R.-D.|year= 2005|doi= 10.1051/0004-6361:20052740|arxiv = astro-ph/0505019 }}
6. ^¹{{Cite journal| doi = 10.1134/S1063773706110065| bibcode=2006AstL...32..759G| title = Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system| journal = Astronomy Letters| volume = 32| issue = 11| pages = 759–771| date = November 2006| last1 = Gontcharov | first1 = G. A.|arxiv = 1606.08053 }}
7. ^¹²³{{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 }}
8. ^¹²³⁴⁵{{cite journal|bibcode=2015A&A...574A.142M|arxiv=1409.5057|title=Radial dependence of line profile variability in seven O9-B0.5 stars|journal=Astronomy & Astrophysics|volume=574|pages=A142|author1=Martins|first1=F.|last2=Marcolino|first2=W.|last3=Hillier|first3=D. J.|last4=Donati|first4=J.-F.|last5=Bouret|first5=J.-C.|year=2015|doi=10.1051/0004-6361/201423882}}
9. ^¹²³{{citation | last1=Mermilliod | first1=J.-C. | title=Compilation of Eggen's UBV data, transformed to UBV (unpublished) | journal=Catalogue of Eggen's UBV data. SIMBAD | date=1986 | bibcode=1986EgUBV........0M}}
10. ^¹{{citation | display-authors=1 | last1=Villamariz | first1=M. R. | last2=Herrero | first2=A. | last3=Becker | first3=S. R. | last4=Butler | first4=K. | title=Chemical composition of Galactic OB stars I. CNO abundances in O9 stars | journal=Astronomy and Astrophysics | volume=388 | issue=3 | pages=940–956 |date=June 2002 | doi=10.1051/0004-6361:20020400 | bibcode=2002A&A...388..940V | arxiv=astro-ph/0204209}}

词条	19 Cephei
释义	References External links {{Starbox begin \| name=19 Cep }}{{Starbox image \| image={{Location mark \|image=Cepheus constellation map.svg\|alt=\|float=center\|width=260 \|label=\|position=right \|mark=Red circle.svg\|mark_width=10\|mark_link=19 Cep \|x=674\|y=942 }} \|caption=Location of 19 Cephei (circled) }}{{Starbox observe \| epoch=J2000 \| ra={{RA\|22\|05\|08.78995}} \| dec={{DEC\|+62\|16\|47.3301}} \| appmag_v=5.08^[3] \| constell=Cepheus }}{{Starbox character \| class=O9Ib^[4] \| b-v=+0.06^[3] \| u-b=−0.91^[3] \| variable= }}{{Starbox astrometry \| radial_v={{val\|−12.8\|0.9}}^[7] \| prop_mo_ra=−1.16 \| prop_mo_dec=−2.96 \| parallax=1.58 \| p_error=0.19 \| parallax_footnote= \| dist_pc = 1,200^[1] \| absmag_v=−5.45^[2] }}{{Starbox detail \| mass=20^[13] \| radius=17.0^[4] \| luminosity=224,000^[4] \| temperature={{val\|32983\|1428\|fmt=commas}}^[16] \| metal_fe={{val\|0.06\|0.08}}^[16] \| gravity={{val\|3.40\|0.08}}^[16] \| rotational_velocity=48^[4] \| age= }}{{Starbox catalog \| names= 19 Cep, BD+61°2246, HD 209975, HIP 109017, HR 8428, SAO 19849. }}{{Starbox reference \|Simbad=19+Cephei }}{{Starbox end}} 19 Cephei is a supergiant star in the northern circumpolar constellation of Cepheus. It has a spectral class of O9 and is a member of Cep OB2, an OB association of massive stars located about {{Convert\|615\|pc\|ly}} from the Sun. The spectrum of 19 Cephei shows line profile variability on an hourly and daily timescale. This is thought to be due to the changes in the stellar wind.^[4] Double star catalogues list several companions for 19 Cephei. The Washington Double Star Catalog describes four companions: 11th magnitude stars 20" and 56" away, and two 15th magnitude stars 4-5" away.^[3] The Catalog of Components of Double and Multiple Stars gives only the two 11th magnitude stars.^[4] A scattered cluster of faint stars has been detected associated with 19 Cephei. The brightest likely members apart from 19 Cep itself are 10th magnitude stars.^[5] References 1. ^{{cite journal\|bibcode= 2015AJ....149...26A\|title= The Multiplicity of Massive Stars: A High Angular Resolution Survey with the Guidance Sensor\|journal= The Astronomical Journal\|volume= 149\|pages= 26\|author1= Aldoretta\|first1= E. J.\|last2= Caballero-Nieves\|first2= S. M.\|last3= Gies\|first3= D. R.\|last4= Nelan\|first4= E. P.\|last5= Wallace\|first5= D. J.\|last6= Hartkopf\|first6= W. I.\|last7= Henry\|first7= T. J.\|last8= Jao\|first8= W.-C.\|last9= Maíz Apellániz\|first9= J.\|last10= Mason\|first10= B. D.\|last11= Moffat\|first11= A. F. J.\|last12= Norris\|first12= R. P.\|last13= Richardson\|first13= N. D.\|last14= Williams\|first14= S. J.\|year= 2015\|doi= 10.1088/0004-6256/149/1/26\|arxiv = 1410.0021 }} 2. ^{{cite journal\|bibcode=2006A&A...454..625P\|arxiv=astro-ph/0604372\|title=Bright OB stars in the Galaxy. III. Constraints on the radial stratification of the clumping factor in hot star winds from a combined Hα, IR and radio analysis\|journal=Astronomy and Astrophysics\|volume=454\|issue=2\|pages=625\|author1=Puls\|first1=J.\|last2=Markova\|first2=N.\|last3=Scuderi\|first3=S.\|last4=Stanghellini\|first4=C.\|last5=Taranova\|first5=O. G.\|last6=Burnley\|first6=A. W.\|last7=Howarth\|first7=I. D.\|year=2006\|doi=10.1051/0004-6361:20065073}} 3. ^{{cite journal\|bibcode=2001AJ....122.3466M\|title=The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog\|journal=The Astronomical Journal\|volume=122\|issue=6\|pages=3466\|author1=Mason\|first1=Brian D.\|last2=Wycoff\|first2=Gary L.\|last3=Hartkopf\|first3=William I.\|last4=Douglass\|first4=Geoffrey G.\|last5=Worley\|first5=Charles E.\|year=2001\|doi=10.1086/323920}} 4. ^{{cite journal\|bibcode=1994CoORB.115....1D\|title=Catalogue des composantes d'etoiles doubles et multiples (CCDM) premiere edition - Catalogue of the components of double and multiple stars (CCDM) first edition\|journal=Com. de l'Observ. Royal de Belgique\|volume=115\|pages=1\|author1=Dommanget\|first1=J.\|last2=Nys\|first2=O.\|year=1994}} 5. ^{{cite journal\|bibcode= 2005A&A...440..403K\|title= 109 new Galactic open clusters\|journal= Astronomy and Astrophysics\|volume= 440\|pages= 403\|author1= Kharchenko\|first1= N. V.\|last2= Piskunov\|first2= A. E.\|last3= Röser\|first3= S.\|last4= Schilbach\|first4= E.\|last5= Scholz\|first5= R.-D.\|year= 2005\|doi= 10.1051/0004-6361:20052740\|arxiv = astro-ph/0505019 }} 6. ^¹{{Cite journal\| doi = 10.1134/S1063773706110065\| bibcode=2006AstL...32..759G\| title = Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system\| journal = Astronomy Letters\| volume = 32\| issue = 11\| pages = 759–771\| date = November 2006\| last1 = Gontcharov \| first1 = G. A.\|arxiv = 1606.08053 }} 7. ^¹²³{{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 }} 8. ^¹²³⁴⁵{{cite journal\|bibcode=2015A&A...574A.142M\|arxiv=1409.5057\|title=Radial dependence of line profile variability in seven O9-B0.5 stars\|journal=Astronomy & Astrophysics\|volume=574\|pages=A142\|author1=Martins\|first1=F.\|last2=Marcolino\|first2=W.\|last3=Hillier\|first3=D. J.\|last4=Donati\|first4=J.-F.\|last5=Bouret\|first5=J.-C.\|year=2015\|doi=10.1051/0004-6361/201423882}} 9. ^¹²³{{citation \| last1=Mermilliod \| first1=J.-C. \| title=Compilation of Eggen's UBV data, transformed to UBV (unpublished) \| journal=Catalogue of Eggen's UBV data. SIMBAD \| date=1986 \| bibcode=1986EgUBV........0M}} 10. ^¹{{citation \| display-authors=1 \| last1=Villamariz \| first1=M. R. \| last2=Herrero \| first2=A. \| last3=Becker \| first3=S. R. \| last4=Butler \| first4=K. \| title=Chemical composition of Galactic OB stars I. CNO abundances in O9 stars \| journal=Astronomy and Astrophysics \| volume=388 \| issue=3 \| pages=940–956 \|date=June 2002 \| doi=10.1051/0004-6361:20020400 \| bibcode=2002A&A...388..940V \| arxiv=astro-ph/0204209}} Vizier catalog entry^[6]^[7]^[8]^[9]^[10] }} External links {{cite simbad\|title= 19 Cep}} {{Stars of Cepheus}} 7 : Cepheus (constellation)\|Flamsteed objects\|Hipparcos objects\|O-type supergiants\|Henry Draper Catalogue objects\|HR objects\|Durchmusterung objects
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References

External links