ASASSN-19om: new transient (13.7 mag) in Cygnus - dwarf nova or nova?

SPK
Affiliation
Association Française des Observateurs d'Étoiles Variables (AFOEV)
Fri, 06/07/2019 - 18:39

ASASSN-19om (UG/N)
RA 19:28:22.337 DEC +55:32:01.02 (J2000.0)

"Bright transient, no Vizier match, most likely a large amplitude CV or a Galactic Nova": https://wis-tns.weizmann.ac.il/object/2019hau

Complete ASAS-SN Sky Patrol (Shappee et al. 2014ApJ...788...48S and Kochanek et al. 2017PASP..129j4502K) data and light curve: https://asas-sn.osu.edu/light_curves/44371790-d12f-4618-9535-14f6df7b9d…

Spectroscopy, precise astrometry (or at least a snapshot), and multiband (and possibly time-resolved) photometry are urgently required.

Clear skies,
Patrick

dcrowson
Affiliation
American Association of Variable Star Observers (AAVSO)
Sequence Stars

Anyone request these?

dcrowson
Affiliation
American Association of Variable Star Observers (AAVSO)
Stars are available now

I see that stars are available now. This one appears to be fading fast. 14.6V June 9th - 15.5V June 12th.

Dan