| 释义 |
- Naming
- References
- External links
{{Starbox begin
| name = Alpha Pyxidis
}}{{Starbox image
| image =| caption=Location of α Pyxidis }}{{Starbox observe | epoch = J2000 | ra = {{RA|08|43|35.53756}}
| dec = {{DEC|–33|11|10.9898}}
| appmag_v = 3.67[3]
| constell = Pyxis
}}{{Starbox character
| class = B1.5III[4]
| b-v = –0.19[3]
| u-b = –0.84[3]
| variable = Beta Cephei[7]
}}{{Starbox astrometry
| radial_v = +15.3[8]
| prop_mo_ra = –14.27
| prop_mo_dec = +10.43
| parallax = 3.71
| p_error = 0.14
| parallax_footnote =
| absmag_v = −3.47[12]
}}{{Starbox detail
| mass = 10.7[7]
| radius = {{nowrap|6.3 ± 1.0}}[14]
| luminosity = 10,000[7]
| temperature = 24,300[16]
| metal_fe = -0.18[16]
| rotation =
| rotational_velocity = 11[18]
| gravity = 3.63[16]
| age =
}}{{Starbox catalog
| names=α Pyxidis, CPD−32° 2399, FK5 327, HD 74575, HIP 42828, HR 3468, SAO 199546.[20]
}}{{Starbox reference
|Simbad=*+alf+Pyx
}}{{Starbox end}}Alpha Pyxidis (Alpha Pyx, α Pyxidis, α Pyx) is a giant star in the constellation Pyxis. It has a stellar classification of B1.5III and is a Beta Cephei variable. This star has more than ten times the mass of the Sun and is more than six times the Sun's radius. The surface temperature is 24,300 K and the star is about 10,000 times as luminous as the Sun.[4][7][16] Stars such as this with more than 10 solar masses are expected to end their life by exploding as a supernova.[24]NamingIn Chinese, {{lang|zh|天狗}} ({{lang|zh-Latn|Tiān Gǒu}}), meaning Celestial Dog, refers to an asterism consisting of α Pyxidis, e Velorum, f Velorum, β Pyxidis, γ Pyxidis and δ Pyxidis. Consequently, α Pyxidis itself is known as {{lang|zh|天狗五}} ({{lang|zh-Latn|Tiān Gǒu wǔ}}, {{lang-en|the Fifth Star of Celestial Dog}}.)[1] References1. ^{{zh icon}} AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 7 月 17 日
2. ^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=. }}
3. ^1 {{citation | last1=Hubrig | first1=S. | last2=Ilyin | first2=I. | last3=Schöller | first3=M. | last4=Briquet | first4=M. | last5=Morel | first5=T. | last6=De Cat | first6=P. | title=First Magnetic Field Models for Recently Discovered Magnetic β Cephei and Slowly Pulsating B Stars | journal=The Astrophysical Journal Letters | volume=726 | issue=1 | page=L5 |date=January 2011 | doi=10.1088/2041-8205/726/1/L5 | bibcode=2011ApJ...726L...5H |arxiv = 1012.3019 | url=http://orbi.ulg.ac.be/bitstream/2268/81132/1/apjl_726_1_5.pdf }}
4. ^1 2 3 {{cite journal | last=Fernie | first=J. D. | title=New UBVRI photometry for 900 supergiants | journal=Astrophysical Journal Supplement Series | volume=52 |date=May 1983 | pages=7–22 | doi=10.1086/190856 | bibcode=1983ApJS...52....7F }}
5. ^1 {{cite book | last=Wilson | first=R. E. | year=1953 | title=General Catalogue of Stellar Radial Velocities | publisher=Carnegie Institute of Washington D.C. | bibcode=1953GCRV..C......0W }}
6. ^1 2 3 4 {{cite journal | last=Kilian | first=J. | title=Chemical abundances in early B-type stars. 5: Metal abundances and LTE/NLTE comparison | journal=Astronomy and Astrophysics | volume=282 | issue=3 | pages=867–873 |date=February 1994 | bibcode=1994A&A...282..867K }}
7. ^1 {{cite journal | last1=Nieva | first1=M. F. | last2=Przybilla | first2=N. | title=Carbon abundances of early B-type stars in the solar vicinity. Non-LTE line-formation for C II/III/IV and self-consistent atmospheric parameters | journal=Astronomy and Astrophysics | volume=481 | issue=1 |date=April 2008 | pages=199–216 | doi=10.1051/0004-6361:20078203 | bibcode=2008A&A...481..199N |arxiv = 0711.3783 }}
8. ^1 2 {{cite journal | last1=Hiltner | first1=W. A. | last2=Garrison | first2=R. F. | last3=Schild | first3=R. E. | title=MK Spectral Types for Bright Southern OB Stars | journal=Astrophysical Journal | volume=157 | page=313 |date=July 1969 | doi=10.1086/150069 | bibcode=1969ApJ...157..313H }}
9. ^1 {{cite web | title=NSV 4220 -- Variable Star | work=SIMBAD | publisher=Centre de Données astronomiques de Strasbourg | url=http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NSV+4220 | accessdate=2010-02-23 }}
10. ^1 2 3 4 {{cite journal | display-authors=1 | last1=Hubrig | first1=S. | last2=Briquet | first2=M. | last3=De Cat | first3=P. | last4=Schoeller | first4=M. | last5=Morel | first5=T. | last6=Ilyin | first6=I. | title=New magnetic field measurements of beta Cephei stars and Slowly Pulsating B stars | journal=Astronomische Nachrichten | volume=330 | issue=4 | page=317 |date=January 2009 | doi=10.1002/asna.200811187 | bibcode=2009AN....330..317H | arxiv=0902.1314 }}
11. ^1 {{cite journal | first=B. Cameron | last=Reed | title=New Estimates of the Solar-Neighborhood Massive-Stars Birthrate and the Galactic Supernova Rate | date=June 28, 2005 | doi=10.1086/444474 | journal=The Astronomical Journal | volume=130 | issue=4 | page=1652 | arxiv=astro-ph/0506708 | bibcode = 2005AJ....130.1652R }}
}}External links
| first=James | last=Kaler | title=Alpha Pyxidis
| publisher=University of Illinois
| url=http://stars.astro.illinois.edu/sow/alphapyx.html
| accessdate=2010-02-23 }}{{Stars of Pyxis}} 8 : Bayer objects|B-type giants|Pyxis (constellation)|Beta Cephei variables|HR objects|Henry Draper Catalogue objects|Hipparcos objects|Durchmusterung objects |