| PHL 293B | |
|---|---|
 Hubble Space Telescope image of PHL 293B; the purported luminous blue variable is located near the core of the galaxy | |
| Observation data (J2000 epoch) | |
| Constellation | Aquarius |
| Right ascension | 22h 30m 36.8s[1] |
| Declination | −00° 06′ 37″[1] |
| Redshift | 0.0051[1] |
| Distance | 74 Mly (22.6 Mpc)[2] |
| Apparent magnitude (V) | 16.87[3] |
| Apparent magnitude (B) | 17.35[3] |
| Characteristics | |
| Type | Im?[1] |
| Other designations | |
| Kinman's Dwarf, PGC 69018[3] | |
Preview warning: Page using Template:Infobox galaxy with unknown parameter "credit"
| Observation data Epoch J1950 Equinox J1950 | |
|---|---|
| Constellation | Aquarius |
| Right ascension | 22h 28.1m [4] |
| Declination | −0° 22′[4] |
| Characteristics | |
| Evolutionary stage | Luminous blue variable? |
| Astrometry | |
| Radial velocity (Rv) | (of galaxy) 1,606[5] km/s |
| Distance | 22,600,000[2] pc |
| Details | |
| Radius | 1,348–1,463[6] R☉ |
| Luminosity | 2,500,000–3,500,000[6] L☉ |
| Temperature | 6,000–6,800[6] K |
| Other designations | |
| Database references | |
| SIMBAD | PHL 293B |
| PHL 293 (Simbad mistakenly showing results for PHL 293B) | |
PHL 293B, also known as Kinman's dwarf, is a low-metallicity blue compact dwarf galaxy about 22.6 Mpc from the Earth in the constellation Aquarius.[2]
It had a very likely associated, notable, blue-light, long-lived star with constant outbursts or a large supernova observed to have faded and which then disappeared. Although this bright visible jet-producing object responsible for broad hydrogen emission lines with P Cygni profiles was widely considered to be a luminous blue variable ejecting matter, other studies posited the mentioned, competing, explanations for the bright light source within.
- ^ a b c d Kehrig, C.; Iglesias-Páramo, J.; Vílchez, J. M.; Gil De Paz, A.; Duarte Puertas, S.; Pérez-Montero, E.; Díaz, A. I.; Gallego, J.; Carrasco, E.; Cardiel, N.; García-Vargas, M. L.; Castillo-Morales, A.; Cedazo, R.; Gómez-Álvarez, P.; Martínez-Delgado, I.; Pascual, S.; Pérez-Calpena, A. (2020). "Mapping the ionized gas of the metal-poor H II galaxy PHL 293B with MEGARA" (PDF). Monthly Notices of the Royal Astronomical Society. 498 (2): 1638–1650. arXiv:2009.11600. doi:10.1093/mnras/staa2299.
- ^ a b c Cite error: The named reference
kinmanwas invoked but never defined (see the help page). - ^ a b c "PHL 293B". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 30 August 2021.
- ^ a b French, H. B. (1980). "Galaxies with the spectra of giant H II regions". The Astrophysical Journal. 240: 41. Bibcode:1980ApJ...240...41F. doi:10.1086/158205.
- ^ Guseva, N. G.; Papaderos, P.; Meyer, H. T.; Izotov, Y. I.; Fricke, K. J. (2009). "An investigation of the luminosity-metallicity relation for a large sample of low-metallicity emission-line galaxies". Astronomy & Astrophysics. 505 (1): 63–72. arXiv:0908.2539. Bibcode:2009A&A...505...63G. doi:10.1051/0004-6361/200912414. S2CID 17490296.
- ^ a b c Cite error: The named reference
allanwas invoked but never defined (see the help page). - ^ Cite error: The named reference
izotovwas invoked but never defined (see the help page). - ^ Cite error: The named reference
terlevichwas invoked but never defined (see the help page).
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