Aquila X-1

Aquila X-1 (frequently abbreviated to Aql X-1) is a low-mass x-ray binary (LMXB) and the most luminous X-Ray source in the constellation Aquila. It was first observed by the satellite Vela 5B which detected several outbursts from this source between 1969 and 1976.[3] Its optical counterpart is variable, so it was named V1333 Aql according to the IAU standards. The system hosts a neutron star that accretes matter from a main sequence star of spectral type K4.[2]

Aquila X-1
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Aquila
Right ascension  19h 11m 16.05s[1]
Declination +00° 35′ 05.8″[1]
Characteristics
Spectral type K4 [2]
Variable type LMXB[3]
Other designations
V1333 Aql, 2MASS J19111604+0035058
Database references
SIMBADdata

References
  1. Cutri, R. M.; Skrutskie, M. F.; Van Dyk, S.; Beichman, C. A.; Carpenter, J. M.; Chester, T.; Cambresy, L.; Evans, T.; Fowler, J.; Gizis, J.; Howard, E.; Huchra, J.; Jarrett, T.; Kopan, E. L.; Kirkpatrick, J. D.; Light, R. M.; Marsh, K. A.; McCallon, H.; Schneider, S.; Stiening, R.; Sykes, M.; Weinberg, M.; Wheaton, W. A.; Wheelock, S.; Zacarias, N. (2003). "VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)". VizieR On-line Data Catalog: II/246. Bibcode:2003yCat.2246....0C.
  2. Mata Sánchez, D.; Muñoz-Darias, T.; Casares, J.; Jiménez-Ibarra, F. (2017), "The donor of Aquila X-1 revealed by high-angular resolution near-infrared spectroscopy", MNRAS Letters, 464 (1): L41–L45, arXiv:1609.00392, Bibcode:2017MNRAS.464L..41M, doi:10.1093/mnrasl/slw172
  3. Campana, S.; Coti Zelati, F.; D'avanzo, P. (2013), "Mining the Aql X-1 long term X–ray light curve", MNRAS, 432 (2): 1695–1700, arXiv:1304.4033, Bibcode:2013MNRAS.432.1695C, doi:10.1093/mnras/stt604


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