Astronomy:Collinder 228

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Collinder 228
Collinder 228.jpg
Observation data (J2000 epoch)
ConstellationCarina
Right ascension 10h 44m 00.0s[1]
Declination−60° 05′ 12″[1]
Distance10,000 ly
Apparent magnitude (V)4.4[1]
Apparent dimensions (V)14
Physical characteristics
Other designationsOCl 828.0, MWSC 1845, C 1041-597, KPR2004b 262[1]
See also: Open cluster, List of open clusters

Collinder 228 is an open cluster within the southern part of the Carina Nebula NGC 3372, about 25' south of η Carinae.[2] It is probably composed of stars which recently formed from the material in the nebula. QZ Carinae is the brightest member of Collinder 228 with an apparent magnitude between 6.16 and 6.49.[3]

Prominent stars
Star name FMF number Effective temperature Absolute magnitude Bolometric magnitude Mass (M☉) Spectral type Ref.
WR 24 (HD 93131) 3 50100 -7.34 -11.4 114 WN6ha-w [4]
QZ Car (HD 93206) 33 30400+20000+34000+32900 -9.2 + 3 + 8.5 + 7 -10.6 27.1+6.5+25.4+17.1 O9.7I+B2V+O8III+O9V [5][6][7]
HD 93632 92 45400 -6.1 -10.2 76 O5III(f)
V661 Car (HD 93130) 1 39900 -6.3 -10.1 68 O7II(f) [6]
HD 305525 98 43600 -5.7 -9.8 58 O6V [6]
97 46100 -4.8 -9 47 O5V [6]
HD 93146 42400 -5.1 -9.1 44 O6.5V((f)) [6]
HD 305524 7 41000 -5.2 -9.1 42 O7V((f)) [6]
HD 93222 6 37200 -5.7 -9.3 42 O8III((f)) [6]
HD 305523 32 35700 -5.6 -9.1 38 O8.5III [6]
HD 305532 38 43600 -4.4 -8.5 38 O6V((f)) [6]
HD 305438 24 38500 -4.6 -8.4 32 O8V [6]
HD 93028 27 35700 -4.9 -8.4 30 O8.5III [6]
HD 305518 22 34700 -5 -8.3 29 O9.5V [6]
HD 93027 14 36000 -4.8 -8.3 29 O9V [6]
39 37200 -4.6 -8.2 29 O8.5V((f)) [6]
HD 305539 94 37200 -4.4 -8.1 28 O8.5V [6]
67 36000 -4.7 -8.2 28 O9V [6]
HD 93576 93 36000 -4.7 -8.2 28 O9V [6]
21 37200 -4.2 -7.8 27 O8.5V [6]
HD 305536 5 34700 -4.7 -8.1 26 O9.5V [6]
66 34700 -3.9 -7.3 22 O9.5V [6]
12 20900 -6.1 -8 20 B2.5Ia: [6]

See also

References

  1. ↑ 1.0 1.1 1.2 1.3 "Collinder 228". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Collinder+228. 
  2. ↑ Feinstein, A. (1995). "Open Clusters in the Carina Nebula". Revista Mexicana de Astronomía y Astrofísica, Serie de Conferencias 2: 57. Bibcode: 1995RMxAC...2...57F. 
  3. ↑ Samus, N. N. et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007–2013)". VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S 1: 02025. Bibcode: 2009yCat....102025S. 
  4. ↑ Sota, A.; Maíz Apellániz, J.; Morrell, N. I.; Barbá, R. H.; Walborn, N. R.; Gamen, R. C.; Arias, J. I.; Alfaro, E. J. et al. (2019). "The Galactic WN stars revisited. Impact of Gaia distances on fundamental stellar parameters". Astronomy & Astrophysics A57: 625. doi:10.1051/0004-6361/201834850. Bibcode: 2019A&A...625A..57H. 
  5. ↑ Rainot, A.; Reggiani, M.; Sana, H.; Bodensteiner, J.; Gomez-Gonzalez, C. A.; Absil, O.; Christiaens, V.; Delorme, P. et al. (2020). "Carina High-contrast Imaging Project for massive Stars (CHIPS). I. Methodology and proof of concept on QZ Car (≡ HD 93206)". Astronomy and Astrophysics 640: A15. doi:10.1051/0004-6361/201936448. Bibcode: 2020A&A...640A..15R. 
  6. ↑ 6.00 6.01 6.02 6.03 6.04 6.05 6.06 6.07 6.08 6.09 6.10 6.11 6.12 6.13 6.14 6.15 6.16 6.17 6.18 6.19 6.20 Cite error: Invalid <ref> tag; no text was provided for refs named Massey
  7. ↑ Parkin, E. R.; Broos, P. S.; Townsley, L. K.; Pittard, J. M. et al. (2011). "X-ray emission from the double-binary OB-star system QZ Car (HD 93206)". The Astrophysical Journal Supplement 194 (1): article id. 8, 11 pp. doi:10.1088/0067-0049/194/1/8. Bibcode: 2011ApJS..194....8P. 

Coordinates: Sky map 10h 44m 00.0s, −60° 05′ 12″



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