AstroNote 2019-4

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2019-04-05 09:54:47
Type: Object/s-Discovery/Classification
Classificaiton of AT 2019brs as an AT 2017bgt-like SMBH-Related Flare
Authors: I. Arcavi (Tel Aviv University), B. Trakhtenbrot (Tel Aviv University), D. Hiramatsu (Las Cumbres Observaotry / UC Santa Barabra)

We report the classificaiton of AT 2019brs as a member of the class of flares identified in Trakhtenbrot et al. (2019, Nature Astronomy, 3, 242). This class has been associated with events of enhanced accretion onto supermassive black holes.

Here we identify both the strong blue continuum and the N III + He II ("double peak") emission feature associated with the Bowen fluorescence mechanism which characterize this class, together with strong Balmer (H-alpha and H-beta) emission lines.

This would be the fourth member of the class together with the event in the galaxy F01004-2237 (Tadhunter et al. 2017, Nature Astronomy, 1, 61) , OGLE17aaj (Gromazki et al. 2019, A&A, 622, 2), and AT 2017bgt / ASASSN-17cv (Trakhtenbrot et al. 2019, Nature Astronomy, 3, 242)

Our spectrum will momentarily be made public on the TNS.

Show current TNS values
CatalogNameReported RAReported DECReported Obj-TypeReported RedshiftHost NameHost RedshiftRemarksTNS RATNS DECTNS Obj-TypeTNS Redshift
TNS2019brs [Gaia19axp]14:27:46.400+29:30:38.2714:27:46.400+29:30:38.270.37362
TNS2017bgt [ASASSN-17cv]16:11:05.518+02:34:02.1416:11:05.518+02:34:02.14AGN0.064