Zeta Crucis: Difference between revisions
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| last9=Grenon | first9=M. |
| last9=Grenon | first9=M. |
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| title=The Hipparcos Catalogue | journal=[[Astronomy & Astrophysics]] |
| title=The Hipparcos Catalogue | journal=[[Astronomy & Astrophysics]] |
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| |
| date=1997 | volume=323 | pages=L49–L52 | bibcode=1997A&A...323L..49P | postscript=. }}</ref> |
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| dec={{DEC|–64|00|11.055}}<ref name="hipparcos"/> |
| dec={{DEC|–64|00|11.055}}<ref name="hipparcos"/> |
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| appmag_v=4.04<ref name="clpl99">{{cite journal |
| appmag_v=4.04<ref name="clpl99">{{cite journal |
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| author=Johnson, H. L. |
| author=Johnson, H. L. |
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| author2=Iriarte, B. |
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| author3=Mitchell, R. I. |
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| author4=Wisniewskj, W. Z. |
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| title=UBVRIJKL photometry of the bright stars |
| title=UBVRIJKL photometry of the bright stars |
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| journal=Communications of the Lunar and Planetary Laboratory | volume=4 | issue=99 | |
| journal=Communications of the Lunar and Planetary Laboratory | volume=4 | issue=99 | date=1966 |
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| bibcode=1966CoLPL...4...99J |
| bibcode=1966CoLPL...4...99J |
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| last2=Mitchell |
| last2=Mitchell |
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{{Starbox character |
{{Starbox character |
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| class=B2.5V<ref name="apj157">{{cite journal |
| class=B2.5V<ref name="apj157">{{cite journal |
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| author=Hiltner, W. A. |
| author=Hiltner, W. A. |
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| author2=Garrison, R. F. |
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| author3=Schild, R. E. |date=July 1969 |
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| title=MK Spectral Types for Bright Southern OB Stars |
| title=MK Spectral Types for Bright Southern OB Stars |
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| journal=Astrophysical Journal | volume=157 |
| journal=Astrophysical Journal | volume=157 |
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| radial_v=+15.8<ref>{{cite conference |
| radial_v=+15.8<ref>{{cite conference |
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| last=Evans | first=D. S. | date=June 20–24, 1966 |
| last=Evans | first=D. S. | date=June 20–24, 1966 |
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| |
| editor=Batten, Alan Henry |
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| editor2=Heard, John Frederick |
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| 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 |
| 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 |
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| publisher=International Astronomical Union |
| publisher=International Astronomical Union |
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| url=http://adsabs.harvard.edu/abs/1967IAUS...30...57E | accessdate=2009-09-10 }}</ref> |
| url=http://adsabs.harvard.edu/abs/1967IAUS...30...57E | bibcode=1967IAUS...30...57E | accessdate=2009-09-10 }}</ref> |
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| prop_mo_ra=–33.19<ref name="hipparcos"/> |
| prop_mo_ra=–33.19<ref name="hipparcos"/> |
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| prop_mo_dec=–10.38<ref name="hipparcos"/> |
| prop_mo_dec=–10.38<ref name="hipparcos"/> |
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| luminosity= |
| luminosity= |
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| temperature=3,832<ref>{{cite journal |
| temperature=3,832<ref>{{cite journal |
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| author=Gerbaldi, M. |
| author=Gerbaldi, M. |
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| author2=Faraggiana, R. |
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| author3=Balin, N. |
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| title=Binary systems with post-T Tauri secondaries |
| title=Binary systems with post-T Tauri secondaries |
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| volume=379 | journal=Astronomy and Astrophysics |
| volume=379 | journal=Astronomy and Astrophysics |
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| metal= |
| metal= |
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| rotational_velocity=115<ref>{{cite journal |
| rotational_velocity=115<ref>{{cite journal |
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| author=Bernacca, P. L. |
| author=Bernacca, P. L. |
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| author2=Perinotto, M. |
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| title=A catalogue of stellar rotational velocities |
| title=A catalogue of stellar rotational velocities |
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| journal=Contributi Osservatorio Astronomico di Padova in Asiago | volume=239 | issue=1 | |
| journal=Contributi Osservatorio Astronomico di Padova in Asiago | volume=239 | issue=1 | date=1970 |
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| bibcode=1970CoAsi.239....1B |
| bibcode=1970CoAsi.239....1B |
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| last2=Perinotto |
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| pages=1 }}</ref> |
| pages=1 }}</ref> |
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| gravity= |
| gravity= |
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'''ζ Crucis''' (ζ Cru, [[Zeta]] Crucis) is a [[binary star]] in the [[constellation]] [[Crux]]. It has an [[apparent magnitude]] of 4.06<sup>m</sup>. The primary star is [[stellar classification|classified]] as a blue-white dwarf (spectral class B2.5 V). The secondary component is much fainter, with an apparent magnitude of 12.49.<ref>{{cite journal |
'''ζ Crucis''' (ζ Cru, [[Zeta]] Crucis) is a [[binary star]] in the [[constellation]] [[Crux]]. It has an [[apparent magnitude]] of 4.06<sup>m</sup>. The primary star is [[stellar classification|classified]] as a blue-white dwarf (spectral class B2.5 V). The secondary component is much fainter, with an apparent magnitude of 12.49.<ref>{{cite journal |
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| author=Gahm, G. F. |
| author=Gahm, G. F. |
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| author2=Ahlin, P. |
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| author3=Lindroos, K. P. |
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| title=A study of visual double stars with early type primaries. I - Spectroscopic results |
| title=A study of visual double stars with early type primaries. I - Spectroscopic results |
||
| journal=Astronomy and Astrophysics Supplement Series | volume=51 |date=January 1983 |
| journal=Astronomy and Astrophysics Supplement Series | volume=51 |date=January 1983 |
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| pages=143–159 | bibcode=1983A&AS...51..143G |
| pages=143–159 | bibcode=1983A&AS...51..143G |
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⚫ | |||
| last2=Ahlin |
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⚫ | |||
==References== |
==References== |
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{{ |
{{Reflist|30em}} |
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{{Stars of Crux}} |
{{Stars of Crux}} |
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[[Category:Crux (constellation)]] |
[[Category:Crux (constellation)]] |
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[[Category:Lower Centaurus Crux]] |
[[Category:Lower Centaurus Crux]] |
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{{main-star-stub}} |
{{main-star-stub}} |
Revision as of 02:50, 7 May 2015
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Crux |
Right ascension | 12h 18m 26.2485s[1] |
Declination | –64° 00′ 11.055″[1] |
Apparent magnitude (V) | 4.04[2] |
Characteristics | |
Spectral type | B2.5V[3] |
U−B color index | –0.68[2] |
B−V color index | –0.17[2] |
Astrometry | |
Radial velocity (Rv) | +15.8[4] km/s |
Proper motion (μ) | RA: –33.19[1] mas/yr Dec.: –10.38[1] mas/yr |
Parallax (π) | 9.03 ± 0.55 mas[1] |
Distance | 360 ± 20 ly (111 ± 7 pc) |
Details | |
Temperature | 3,832[5] K |
Rotational velocity (v sin i) | 115[6] km/s |
Age | 7 × 106[7] years |
Other designations | |
ζ Crucis (ζ Cru, Zeta Crucis) is a binary star in the constellation Crux. It has an apparent magnitude of 4.06m. The primary star is classified as a blue-white dwarf (spectral class B2.5 V). The secondary component is much fainter, with an apparent magnitude of 12.49.[9] ζ Crucis is located at about 360 light-years from the Sun.
References
- ^ a b c d e Perryman, M. A. C.; et al. (1997). "The Hipparcos Catalogue". Astronomy & Astrophysics. 323: L49–L52. Bibcode:1997A&A...323L..49P.
{{cite journal}}
: CS1 maint: postscript (link) - ^ a b c Johnson, H. L.; Mitchell; Iriarte; Wisniewski (1966). "UBVRIJKL photometry of the bright stars". Communications of the Lunar and Planetary Laboratory. 4 (99): 99. Bibcode:1966CoLPL...4...99J.
{{cite journal}}
: More than one of|author2=
and|last2=
specified (help); More than one of|author3=
and|last3=
specified (help); More than one of|author4=
and|last4=
specified (help) - ^ Hiltner, W. A.; Garrison, R. F.; Schild, R. E. (July 1969). "MK Spectral Types for Bright Southern OB Stars". Astrophysical Journal. 157: 313–326. Bibcode:1969ApJ...157..313H. doi:10.1086/150069.
- ^ Evans, D. S. (June 20–24, 1966). "The Revision of the General Catalogue of Radial Velocities". In Batten, Alan Henry; Heard, John Frederick (eds.). Determination of Radial Velocities and their Applications, Proceedings from IAU Symposium no. 30. University of Toronto: International Astronomical Union. Bibcode:1967IAUS...30...57E. Retrieved 2009-09-10.
{{cite conference}}
: Unknown parameter|booktitle=
ignored (|book-title=
suggested) (help) - ^ Gerbaldi, M.; Faraggiana, R.; Balin, N. (November 2001). "Binary systems with post-T Tauri secondaries". Astronomy and Astrophysics. 379: 162–184. Bibcode:2001A&A...379..162G. doi:10.1051/0004-6361:20011298.
- ^ Bernacca, P. L.; Perinotto, M. (1970). "A catalogue of stellar rotational velocities". Contributi Osservatorio Astronomico di Padova in Asiago. 239 (1): 1. Bibcode:1970CoAsi.239....1B.
- ^ Grosbol, P. J. (June 1978). "Space velocities and ages of nearby early-type stars". Astronomy and Astrophysics Supplement Series. 32: 409–421. Bibcode:1978A&AS...32..409G.
- ^ "zet Cru – Star in double system". SIMBAD. Centre de Données astronomiques de Strasbourg. Retrieved 2009-09-10.
- ^ Gahm, G. F.; Ahlin, P.; Lindroos, K. P. (January 1983). "A study of visual double stars with early type primaries. I - Spectroscopic results". Astronomy and Astrophysics Supplement Series. 51: 143–159. Bibcode:1983A&AS...51..143G.