Multi-wavelength Observations of AT2019wey: a New Candidate Black Hole Low-mass X-ray Binary

AT2019wey (SRGA J043520.9+552226, SRGE J043523.3+552234) is a transient first reported by the ATLAS optical survey in 2019 December. It rose to prominence upon detection, three months later, by the Spektrum-Roentgen-Gamma (SRG) mission in its first all-sky survey. X-ray observations reported in Yao...

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Veröffentlicht in:	The Astrophysical journal 2021-10, Vol.920 (2), p.120
Hauptverfasser:	Yao, Yuhan, Kulkarni, S. R., Burdge, Kevin B., Caiazzo, Ilaria, De, Kishalay, Dong, Dillon, Fremling, C., Kasliwal, Mansi M., Kupfer, Thomas, van Roestel, Jan, Sollerman, Jesper, Bagdasaryan, Ashot, Bellm, Eric C., Cenko, S. Bradley, Drake, Andrew J., Duev, Dmitry A., Graham, Matthew J., Kaye, Stephen, Masci, Frank J., Miranda, Nicolas, Prince, Thomas A., Riddle, Reed, Rusholme, Ben, Soumagnac, Maayane T.
Format:	Artikel
Sprache:	eng
Schlagworte:	Accretion Accretion disks Astrophysical black holes Astrophysics Binary stars Black holes Brightening Companion stars Low-mass x-ray binary stars Luminosity Neutron stars Outbursts Radio Radio observation Reprocessing Sky surveys Sky surveys (astronomy) Space telescopes Thermal emission Wavelengths X ray binaries X ray stars X-ray astronomy X-ray emissions X-rays
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Zusammenfassung:	AT2019wey (SRGA J043520.9+552226, SRGE J043523.3+552234) is a transient first reported by the ATLAS optical survey in 2019 December. It rose to prominence upon detection, three months later, by the Spektrum-Roentgen-Gamma (SRG) mission in its first all-sky survey. X-ray observations reported in Yao et al. suggest that AT2019wey is a Galactic low-mass X-ray binary (LMXB) with a black hole (BH) or neutron star (NS) accretor. Here we present ultraviolet, optical, near-infrared, and radio observations of this object. We show that the companion is a short-period ( P ≲ 16 hr) low-mass (
ISSN:	0004-637X 1538-4357 1538-4357
DOI:	10.3847/1538-4357/ac15f9