List of O-type stars
This is a list of O-type stars by their distance from Earth.[1][2][3]
List
[edit]Milky Way galaxy
[edit] |
| Star system←← | Median distance (ly) | Stars in system | Spectral type | Apparent magnitude (V) | Comments and references |
|---|---|---|---|---|---|
| Zeta Ophiuchi | 440 ± 40 | 1 | O9.5 V | 2.56 – 2.58 | The closest O-type star to Earth. |
| Zeta Puppis (Naos) | 1,080 ± 40 | 1 | O4If(n)p | 2.24 - 2.26 | |
| Gamma² Velorum (Suhail al Muhlif/Regor) | 1096+26 −23 |
2 | O7.5III | 1.83 | |
| Mintaka A (Delta Orionis, 34 Orionis) | 1,200 | 3 | O9.5II | 2.5 | |
| Alnitak (Zeta Orionis, 50 Orionis) | 1,260 ± 180 | 3 | O9.5Iab | 1.77 | |
| Sigma Orionis A | 1263±4.3 | 2 | O9.5V | 4.07 | |
| Meissa A (Lambda Orionis) | 1260±200 | 1 | O8 III((f)) | 3.7 | |
| AE Aurigae | 1,320 ± 40 | 1 | O9.5V | 5.96 | |
| Xi Persei (Menkib) | 1340±65 | 1 | O7.5III(n)((f)) | 4.04 | |
| Theta¹ Orionis C1 | 1340±65 | 1 | O6Vp | 5.13 | |
| Iota Orionis (Haytsa) | 1343+45.6 −42.3 |
3 | O9 III | 2.77 | |
| 10 Lacertae | 1,800±103 | 1 | O9V | 4.880 | |
| S Monocerotis (15 Monocerotis) | 2,300 ± 200 | 3 | O7V((f))zvar[4] + O9.5Vn | ||
| Westerhout 51-57 | 20,000 | 1 | O4V | Member of Westerhout 51. |
Magellanic Clouds
[edit]The Large Magellanic Cloud (LMC) is around 163 kly distant and the Small Magellanic Cloud (SMC) is around 204 kly distant
| Host galaxy | Star system | Median distance (ly) | Stars in system | Spectral type | Apparent magnitude (V) | Comments and references |
|---|---|---|---|---|---|---|
| LMC | LH 54-425 | 163,000 | 2 | O3V + O5V | 13.13 | |
| LMC | HD 269810 | 163,000 | 1 | O2III(f*) | 12.22 | |
| LMC | Melnick 42 | 163,000 | 1 | O2If* | 12.78 | |
| LMC | BI 253 | 164,000 | 1 | O2V-III(n)((f*)) | 13.76 | |
| SMC | SMC AB7 | 197,000 | 2 | O6I(f) | 13.016 | |
| SMC | SMC AB8 | 197,000 | 2 | O4V | 12.83 |
Andromeda Galaxy and Triangulum Galaxy
[edit]The Andromeda Galaxy (M31) is 2.5 Mly distant and the Triangulum Galaxy is around 3.2 Mly distant
| Host galaxy | Star system | Median distance (ly) | Stars in system | Spectral type | Apparent magnitude (V) | Comments and references |
|---|---|---|---|---|---|---|
| Triangulum | [BMS2003] 867 | 2,700,000 | 2 | O4Iab+O4Ia | ||
| Triangulum | M33-013406.63 (B416/UIT301) | 3,000,000 | 1 | O9.5Ia |
See also
[edit]- List of Wolf-Rayet stars
- List of luminous blue variable stars
- List of nearest stars by spectral type
References
[edit]- ^ Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- ^ Barry, Don C. (January 1970), "Spectral Classification of a and F Stars", Astrophysical Journal Supplement, 19: 281, Bibcode:1970ApJS...19..281B, doi:10.1086/190209.
- ^ Frost, E. B. (December 1924), "Fourteen spectroscopic binaries", Astrophysical Journal, 60: 319–320, Bibcode:1924ApJ....60..319F, doi:10.1086/142868.
