Zeta Crucis: Difference between revisions

Zeta Crucis
Observation data; Epoch J2000 Equinox J2000
Constellation	Crux
Right ascension	12h 18m 26.2485s
Declination	–64° 00′ 11.055″
Apparent magnitude (V)	4.04
Characteristics
Spectral type	B2.5V
U−B color index	–0.68
B−V color index	–0.17
Astrometry
Radial velocity (Rv)	+15.8 km/s
Proper motion (μ)	RA: –33.19 mas/yr ; Dec.: –10.38 mas/yr
Parallax (π)	9.03 ± 0.55 mas
Distance	360 ± 20 ly ; (111 ± 7 pc)
Details
Temperature	3,832 K
Rotational velocity (v sin i)	115 km/s
Age	7 × 106 years
Other designations
	HR 4679, CPD-63°2235, HD 106983, SAO 251841, HIP 60009.

Browse history interactively

← Previous edit Next edit →

Content deleted Content added

VisualWikitext

Inline

Revision as of 02:50, 7 May 2015

ζ Crucis (ζ Cru, Zeta Crucis) is a binary star in the constellation Crux. It has an apparent magnitude of 4.06^m. 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.

This main-sequence-star-related article is a stub. You can help Wikipedia by expanding it.

[hipparcos-1] 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)

[clpl99-2] 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)

[apj157-3] 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.

[4] 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)

[5] 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.

[6] 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.

[7] 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.

[8] "zet Cru – Star in double system". SIMBAD. Centre de Données astronomiques de Strasbourg. Retrieved 2009-09-10.

[9] 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.

[1]

[2]

[3]

[4]

[5]

[6]

[7]

[8]

[9]

@@ Line 10: / Line 10: @@
  | last9=Grenon | first9=M.
  | title=The Hipparcos Catalogue | journal=[[Astronomy & Astrophysics]]
- | year=1997 | volume=323 | pages=L49–L52 | bibcode=1997A&A...323L..49P | postscript=. }}</ref>
+ | date=1997 | volume=323 | pages=L49–L52 | bibcode=1997A&A...323L..49P | postscript=. }}</ref>
 | dec={{DEC|–64|00|11.055}}<ref name="hipparcos"/>
 | appmag_v=4.04<ref name="clpl99">{{cite journal
-  | author=Johnson, H. L.; Iriarte, B.; Mitchell, R. I.; Wisniewskj, W. Z.
+  | author=Johnson, H. L.
+  | author2=Iriarte, B.
+  | author3=Mitchell, R. I.
+  | author4=Wisniewskj, W. Z.
   | title=UBVRIJKL photometry of the bright stars
-  | journal=Communications of the Lunar and Planetary Laboratory | volume=4 | issue=99 | year=1966
+  | journal=Communications of the Lunar and Planetary Laboratory | volume=4 | issue=99 | date=1966
   | bibcode=1966CoLPL...4...99J
   | last2=Mitchell
@@ Line 24: / Line 27: @@
 {{Starbox character
 | class=B2.5V<ref name="apj157">{{cite journal
-  | author=Hiltner, W. A.; Garrison, R. F.; Schild, R. E. |date=July 1969
+  | author=Hiltner, W. A.
+  | author2=Garrison, R. F.
+  | author3=Schild, R. E. |date=July 1969
   | title=MK Spectral Types for Bright Southern OB Stars
   | journal=Astrophysical Journal | volume=157
@@ Line 34: / Line 39: @@
 | radial_v=+15.8<ref>{{cite conference
   | last=Evans | first=D. S. | date=June 20–24, 1966
-  | editors=Batten, Alan Henry; Heard, John Frederick
+  | editor=Batten, Alan Henry
+  | editor2=Heard, 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
-  | 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>
 | prop_mo_ra=–33.19<ref name="hipparcos"/>
 | prop_mo_dec=–10.38<ref name="hipparcos"/>
@@ Line 49: / Line 55: @@
 | luminosity=
 | temperature=3,832<ref>{{cite journal
-  | author=Gerbaldi, M.; Faraggiana, R.; Balin, N.
+  | author=Gerbaldi, M.
+  | author2=Faraggiana, R.
+  | author3=Balin, N.
   | title=Binary systems with post-T Tauri secondaries
   | volume=379 | journal=Astronomy and Astrophysics
@@ Line 56: / Line 64: @@
 | metal=
 | rotational_velocity=115<ref>{{cite journal
-  | author=Bernacca, P. L.; Perinotto, M.
+  | author=Bernacca, P. L.
+  | author2=Perinotto, M.
   | title=A catalogue of stellar rotational velocities
-  | journal=Contributi Osservatorio Astronomico di Padova in Asiago | volume=239 | issue=1 | year=1970
+  | journal=Contributi Osservatorio Astronomico di Padova in Asiago | volume=239 | issue=1 | date=1970
   | bibcode=1970CoAsi.239....1B
-  | last2=Perinotto
   | pages=1 }}</ref>
 | gravity=
@@ Line 77: / Line 85: @@
 '''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
-  | author=Gahm, G. F.; Ahlin, P.; Lindroos, K. P.
+  | author=Gahm, G. F.
+  | author2=Ahlin, P.
+  | author3=Lindroos, K. P.
   | 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
   | pages=143–159 | bibcode=1983A&AS...51..143G
+  }}</ref> ζ Crucis is located at about 360 [[light-year]]s from the [[Sun]].
-  | last2=Ahlin
-  | last3=Lindroos }}</ref> ζ Crucis is located at about 360 [[light-year]]s from the [[Sun]].
 ==References==
-{{reflist|2}}
+{{Reflist|30em}}
 {{Stars of Crux}}
@@ Line 93: / Line 102: @@
 [[Category:Crux (constellation)]]
 [[Category:Lower Centaurus Crux]]
 {{main-star-stub}}

Observation data Epoch J2000 Equinox J2000
Constellation	Crux
Right ascension	12^h 18^m 26.2485^s^[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 (R_v)	+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
HR 4679, CPD-63°2235, HD 106983, SAO 251841, HIP 60009.^[8]