1ES 1101-232
| 1ES 1101-232 | |
|---|---|
| Observation data (Epoch J2000) | |
| Constellation | Crater |
| Right ascension | 11h 03m 37.6150843895s |
| Declination | −23° 29′ 31.202114088″ |
| Redshift | 0.186 |
| Type | BL Lac |
| Apparent magnitude (V) | 16.55 |
| Other designations | |
| 2FHL J1104.0-2331 | |
| See also: Quasar, List of quasars | |
1ES 1101-232 is an active galactic nucleus of a distant galaxy known as a blazar.
An X-ray source (catalogued as A 1059-22) was first recorded by Maccagni and colleagues in a 1978 paper; they thought the source arose from a galaxy in the Abell 1146 galaxy cluster, which contained many giant elliptical galaxies.[1] In 1989, Remillard and colleagues linked the X-ray source with a visual object and established that the object was surrounded by a large elliptical galaxy. They also discovered that the object (and galaxy) were more distant, with a redshift of 0.186.[2] The host galaxy appears to be part of a distant galaxy cluster.[3]
References
- ^ Maccagni, D.; Tarenghi, M.; Cooke, B. A.; Maccacaro, T.; Pye, J. P.; Ricketts, M. J. (1978). "An X-ray and optical study of seven clusters of galaxies". Astronomy and Astrophysics. 62 (1–2): 127–33. Bibcode:1978A&A....62..127M.
- ^ Remillard, R. A.; Tuohy, I. R.; Brissenden, R. J. V.; Buckley, D. A. H.; Schwartz, D. A.; Feigelson, E. D.; Tapia, S. (1989). "Two X-ray-selected BL Lacertae objects observed with the HEAO 1 scanning modulation collimator". Astrophysical Journal, Part 1. 345: 140–47. Bibcode:1989ApJ...345..140R. doi:10.1086/167888. ISSN 0004-637X.
- ^ Pesce, Joseph E.; Falomo, Renato.; Treves, Aldo (1994). "Imaging and spectroscopy of galaxies in the fields of five BL Lacertae objects". Astronomical Journal. 107 (2): 494–502. Bibcode:1994AJ....107..494P. doi:10.1086/116871. ISSN 0004-6256.
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