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词条 Kappa1 Apodis
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{{DISPLAYTITLE:Kappa1 Apodis}}{{other stars by Bayer designation|Kappa Apodis{{!}}κ Apodis}}{{Starbox begin
| name = Kappa1 Apodis
}}{{Starbox image
| image =

| caption = Location of κ1 Apodis (circled)
}}{{Starbox observe
| epoch = J2000
| ra = {{RA|15|31|30.82178}}
| dec = {{DEC|-73|23|22.5291}}
| appmag_v = 5.52[3]
| constell = Apus
}}{{Starbox character
| class = B1npe[4]
| b-v = -0.128[3]
| u-b = -0.791[3]
| variable = γ Cas[1]
}}{{Starbox astrometry
| radial_v = +62[8]
| prop_mo_ra = +0.56
| prop_mo_dec = -18.40
| parallax = 2.63
| p_error = 0.27
| parallax_footnote =
| absmag_v = −2.47[12]
}}{{Starbox detail
| mass = {{nowrap|12.0 ± 0.3}}[13]
| radius =
| luminosity = 2,120[12]
| temperature = 21,500[15]
| metal_fe =
| gravity = 3.90[15]
| rotational_velocity =
| age_myr = {{nowrap|5.6 ± 1.0}}[13]
}}{{Starbox catalog
| names = {{odlist | B=κ1 Aps | CD=−72° 1139 | CPD=−72° 1802 | FK5=567 | HD=137387 | HIP=76013 | HR=5730 | SAO=257289 }}[18]
}}{{Starbox reference
| Simbad = kap01+Aps
}}{{Starbox end}}Kappa1 Apodis, Latinized from κ1 Apodis, is the Bayer designation for a binary star[4] system in the southern circumpolar constellation of Apus. Based upon parallax measurements, it is located roughly {{Convert|1,200|ly|pc|abbr=off|lk=on}} from Earth. The combined apparent visual magnitude of the system is 5.52,[3] indicating that this is a faint, naked eye star that can be viewed in dark suburban skies. It is moving away from the Sun with a radial velocity of +62 km/s.[8]

This is a spectroscopic binary system with an orbital period of 0.6 days.[4] The combined spectrum matches a stellar classification of B1npe.[4] The 'e' suffix indicates that this is a Be star with emission lines in the spectrum. An 'n' means that the absorption lines in the spectrum are broadened from the Doppler effect as a result of rapid rotation. Finally, the 'p' shows some peculiarity in the spectrum. It is classified as a Gamma Cassiopeiae type variable star and its brightness varies from magnitude +5.43 to +5.61.

This is a runaway star with a peculiar velocity of {{nowrap|69.8 ± 4.7 km/s}}.[13] Because it is a binary star system, it was most likely not turned into a runaway system as the result of a supernova explosion.[4] A companion star is a 12th magnitude orange K-type subgiant located at an angular separation of 27 arcseconds.

References

1. ^{{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|volume=1|pages=02025|author1=Samus|first1=N. N.|last2=Durlevich|first2=O. V.|year=2009|display-authors=etal}}
2. ^{{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=. }}
3. ^{{citation | last=Evans | first=D. S. | date=June 20–24, 1966 | editor1-last=Batten | editor1-first=Alan Henry | editor2-last=Heard | editor2-first=John Frederick | title=The Revision of the General Catalogue of Radial Velocities | booktitle=Determination of Radial Velocities and their Applications, Proceedings from IAU Symposium no. 30 | location=University of Toronto | publisher=International Astronomical Union | bibcode=1967IAUS...30...57E | postscript=.}}
4. ^{{citation | last1=Gutierrez-Moreno | first1=Adelina | last2=Moreno | first2=Hugo | title=A photometric investigation of the Scorpio-Centaurus association | journal=Astrophysical Journal Supplement | volume=15 | page=459 | date=June 1968 | bibcode=1968ApJS...15..459G | doi=10.1086/190168 | postscript=.}}
5. ^{{citation | 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 | journal=Monthly Notices of the Royal Astronomical Society | volume=410 | issue=1 | pages=190–200 | date=January 2011 | doi=10.1111/j.1365-2966.2010.17434.x | bibcode=2011MNRAS.410..190T | postscript=. | arxiv=1007.4883}}
6. ^{{citation | last1=Soubiran | first1=C. | last2=Le Campion | first2=J.-F. | last3=Cayrel de Strobel | first3=G. | last4=Caillo | first4=A. | title=The PASTEL catalogue of stellar parameters | journal=Astronomy and Astrophysics | volume=515 | page=A111 | date=June 2010 | doi=10.1051/0004-6361/201014247 | bibcode=2010A&A...515A.111S | postscript=. | arxiv=1004.1069}}
7. ^{{citation | display-authors=1 | last1=Jilinski | first1=E. | last2=Ortega | first2=V. G. | last3=Drake | first3=N. A. | last4=de la Reza | first4=R. | title=A Dynamical Study of Suspected Runaway Stars as Traces of Past Supernova Explosions in the Region of the Scorpius-Centaurus OB Association | journal=The Astrophysical Journal | volume=721 | issue=1 | pages=469–477 | date=September 2010 | doi=10.1088/0004-637X/721/1/469 | bibcode=2010ApJ...721..469J | postscript=.}}
8. ^{{cite simbad | title=HR 5730 | accessdate=2012-07-08 }}
[2][3][4][5][6][7][8]
}}

External links

  • Image κ¹ Apodis
{{Stars of Apus}}

11 : Henry Draper Catalogue objects|Apus (constellation)|Bayer objects|Durchmusterung objects|B-type subgiants|Gamma Cassiopeiae variable stars|K-type subgiants|Be stars|HR objects|Hipparcos objects|Spectroscopic binaries

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