[vsnet-alert 24780] Re: [baavss-alert] AY Lac in outburst! (since Oct. 8)

[robin at threehillsobservatory.co.uk]

20201008.80     R~500 spectrum showing blue continuum and Balmer lines in weak net absorption
https://britastro.org/specdb/data_graph.php?obs_id=8002


Robin

-----Original Message-----
From: baavss-alert at yahoogroups.com <baavss-alert at yahoogroups.com> 
Sent: 08 October 2020 11:17
To: vsnet-alert at ooruri.kusastro.kyoto-u.ac.jp; vsnet-outburst at ooruri.kusastro.kyoto-u.ac.jp; cvnet-outburst at yahoogroups.com; baavss-alert at yahoogroups.com
Subject: [baavss-alert] AY Lac in outburst! (since Oct. 8)

AY Lacertae  (UGWZ:)
https://www.aavso.org/vsx/index.php?view=detail.top&oid=16667

Patrick Wiggins reports that AY Lac is active in CCD images that were taken today by him on my request (in the course of our CV monitoring programme).

The current outburst can also be seen in recent ASAS-SN Sky Patrol (Shappee et al. 2014ApJ...788...48S and Kochanek et al.
2017PASP..129j4502K) data:
https://asas-sn.osu.edu/light_curves/57596b7a-f011-4a25-9d86-e5674f0b368f
LACAY 20201007.270 <17.29g ASN
LACAY 20201007.394 <16.55g ASN
LACAY 20201008.283  13.83g ASN
LACAY 20201008.395  13.72g ASN

Only two previous outbursts were recorded:
In late August and early September 1927 (C. Hoffmeister) and on 11-29 August 1966 (H. Gessner), see IBVS 5441 at https://konkoly.hu/pub/ibvs/5401/5441.pdf

Time-resolved photometry is urgently required.
Spectroscopy, multiband photometry, and precise astrometry are also encouraged.

Clear skies,
Patrick


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Posted by: Patrick Schmeer <pasc1312-aavso at yahoo.de>
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