Jump to content

HD 33579: Difference between revisions

From Wikipedia, the free encyclopedia
Browse history interactively
← Previous editNext edit →
Content deleted Content added
VisualWikitext
refs and basic data
Line 4: Line 4:
}}
}}
{{Starbox image
{{Starbox image
| image =
| image = <!-- Image with unknown copyright status removed -->
| caption = HD 33579
| caption =
}}
}}
{{Starbox observe
{{Starbox observe
| epoch=[[J2000.0]]
| epoch=[[J2000.0]]
| constell=[[Dorado (constellation)|Dorado]]
| constell=[[Dorado (constellation)|Dorado]]
| ra={{RA|5|5|55.51232}}<ref name=hipparcos>{{cite journal|bibcode=2007A&A...474..653V}}</ref>
| ra=5.09875234
| dec=-67.88636780
| dec={{DEC|-67|53|10.9374}}<ref name=hipparcos/>
| appmag_v=+9.13
| appmag_v=+9.22<ref name=variable/>
}}
}}
{{Starbox character
{{Starbox character
| class=A3:Ia0e
| class=A3Ia<sup>+</sup><ref name=one/>
| b-v=+0.14<ref name=mavridis>{{cite journal|doi=10.1007/978-3-642-65666-8}}</ref>
| b-v=+0.14
| u-b=-0.31
| u-b=-0.29<ref name=mavridis/>
| variable=[[semiregular variable star|semiregular]]
| variable=[[semiregular variable star|semiregular]]<ref name=variable>{{cite journal|doi=10.1051/aas:1998129}}</ref>
}}
}}
{{Starbox astrometry
{{Starbox astrometry
| radial_v=255.959<ref name=ravce>{{cite journal|bibcode=2013AJ....146..134K}}</ref>
| radial_v=−253
| prop_mo_ra=2.31
| prop_mo_ra=2.31<ref name=hipparcos/>
| prop_mo_dec=-0.46
| prop_mo_dec=-0.46<ref name=hipparcos/>
| absmag_v=−9.57<ref name=fabio>{{cite journal|doi=10.1007/978-3-540-39882-0_8}}</ref>
| absmag_v=−9.7
| parallax=-0.18
| parallax=-0.18
| p_error=0.82
⚫
| dist_ly=~160,000
| parallax_footnote=<ref name=hipparcos/>
⚫
| dist_ly=~165,000
| dist_pc=~50,000
| dist_pc=~50,000
}}
}}
{{Starbox detail
{{Starbox detail
| mass=60
| mass=67<ref name=one/>
| radius=400
| radius=330<ref name=one/>
| luminosity=648,000
| luminosity=398,000<ref name=one/>
| temperature=7980
| temperature=7,980<ref name=one/>
| metal_fe=-0.38±0.14<ref name=one/>
| metal=?
| gravity=0.82±0.21<ref name=one/>
| rotation=?
| rotation=
| age=? }}
| age=
}}
{{Starbox catalog
{{Starbox catalog
| names=[[Henry Draper Catalogue|HD]]&nbsp;33579, [[Hipparcos catalogue|HIP]]&nbsp;23718}}
| names=[[Henry Draper Catalogue|HD]]&nbsp;33579, [[Cordoba Durchmusterung|CD]]-68&nbsp;258, [[Hipparcos catalogue|HIP]]&nbsp;23718, [[Radcliffe Observatory|R]]76, [Nicholas Sanduleak|SK]]&nbsp;-67&nbsp;44, [[AAVSO]]&nbsp;0506-68
}}
{{Starbox reference |
{{Starbox reference
Simbad=hd+33579 }}
| Simbad=hd+33579
}}
{{Starbox end}}
{{Starbox end}}


'''HD 33579''' is a star in the [[Large Magellanic Cloud]].<ref>{{cite journal|title=The analysis of the spectrum of the Large Magellanic Cloud supergiant HD 33579|journal=[[Monthly Notices of the Royal Astronomical Society]]|volume= 139|pages=p.313|bibcode=1968MNRAS.139..313P|author1=Przybylski|first1=A.|date=1968}}</ref>
'''HD 33579''' is a white/yellow [[hypergiant]] and one of the brightest stars in the [[Large Magellanic Cloud]] (LMC). It is slightly variable with a primary period of 105 days.


It is a white/yellow [[hypergiant]] and one of the brightest stars in the [[Large Magellanic Cloud|LMC]].<ref name=one>{{cite journal|title=Checking the yellow evolutionary void. Three evolutionary critical Hypergiants: HD 33579, HR 8752 & IRC +10420|journal=[[Astronomy and Astrophysics]]|volume=v.353|pages=p.163–176 (2000)|bibcode=2000A&A...353..163N|author1=Nieuwenhuijzen|first1=H.|last2=De Jager|first2=C.|date=2000}}</ref> It is an extremely rare type of star currently evolving for the first time through the yellow evolutionary void from being a blue hypergiant to becoming a red hypergiant.<ref name=one /> This means the star is often referred to as a [[yellow hypergiant]] although the spectral type of A3 means it is also described as a white hypergiant.<ref name=one />
HD 33579 is an extremely rare type of star currently evolving for the first time through the yellow evolutionary void from being a blue hypergiant to becoming a red hypergiant. This means the star is often referred to as a [[yellow hypergiant]] although the spectral type of A3 means it is also described as a white hypergiant.<ref name=one>{{cite journal|title=Checking the yellow evolutionary void. Three evolutionary critical Hypergiants: HD 33579, HR 8752 & IRC +10420|journal=[[Astronomy and Astrophysics]]|volume=v.353|pages=p.163–176 (2000)|bibcode=2000A&A...353..163N|author1=Nieuwenhuijzen|first1=H.|last2=De Jager|first2=C.|date=2000}}</ref>


== References ==
== References ==

Revision as of 15:40, 6 June 2015

HD 33579

Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Dorado
Right ascension 5h 5m 55.51232s[1]
Declination −67° 53′ 10.9374″[1]
Apparent magnitude (V) +9.22[2]
Characteristics
Spectral type A3Ia+[3]
U−B color index -0.29[4]
B−V color index +0.14[4]
Variable type semiregular[2]
Astrometry
Radial velocity (Rv)255.959[5] km/s
Proper motion (μ) RA: 2.31[1] mas/yr
Dec.: -0.46[1] mas/yr
Parallax (π)-0.18 ± 0.82 mas[1]
Distance~165,000 ly
(~50,000 pc)
Absolute magnitude (MV)−9.57[6]
Details
Mass67[3] M☉
Radius330[3] R☉
Luminosity398,000[3] L☉
Surface gravity (log g)0.82±0.21[3] cgs
Temperature7,980[3] K
Metallicity [Fe/H]-0.38±0.14[3] dex
Other designations
HD 33579, CD-68 258, HIP 23718, R76, [Nicholas Sanduleak
Database references
SIMBADdata

HD 33579 is a white/yellow hypergiant and one of the brightest stars in the Large Magellanic Cloud (LMC). It is slightly variable with a primary period of 105 days.

HD 33579 is an extremely rare type of star currently evolving for the first time through the yellow evolutionary void from being a blue hypergiant to becoming a red hypergiant. This means the star is often referred to as a yellow hypergiant although the spectral type of A3 means it is also described as a white hypergiant.[3]

References

  1. ^ a b c d e . Bibcode:2007A&A...474..653V. {{cite journal}}: Cite journal requires |journal= (help); Missing or empty |title= (help)
  2. ^ a b . doi:10.1051/aas:1998129. {{cite journal}}: Cite journal requires |journal= (help); Missing or empty |title= (help)
  3. ^ a b c d e f g h Nieuwenhuijzen, H.; De Jager, C. (2000). "Checking the yellow evolutionary void. Three evolutionary critical Hypergiants: HD 33579, HR 8752 & IRC +10420". Astronomy and Astrophysics. v.353: p.163–176 (2000). Bibcode:2000A&A...353..163N. {{cite journal}}: |pages= has extra text (help)
  4. ^ a b . doi:10.1007/978-3-642-65666-8. {{cite journal}}: Cite journal requires |journal= (help); Missing or empty |title= (help)
  5. ^ . Bibcode:2013AJ....146..134K. {{cite journal}}: Cite journal requires |journal= (help); Missing or empty |title= (help)
  6. ^ . doi:10.1007/978-3-540-39882-0_8. {{cite journal}}: Cite journal requires |journal= (help); Missing or empty |title= (help)


Stub icon

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

Retrieved from "https://en.wikipedia.org/w/index.php?title=HD_33579&oldid=665770164"