[vsnet-campaign-dn 15615] Re: ASASSN-14ht likely superoutburst (since Apr. 14)

Fri Apr 23 03:57:33 JST 2021

 ASASSN-14ht (UGSU:)
https://www.aavso.org/vsx/index.php?view=detail.top&oid=399524

Still bright, according to recent ASAS-SN Sky Patrol data:
https://asas-sn.osu.edu/sky-patrol/coordinate/0be33f1d-888f-401d-934a-418e8394826a

Time-resolved photometry is urgently required.

Clear skies,
Patrick
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References:
All-Sky Automated Survey for Supernovae (ASAS-SN) Sky Patrol:
- Shappee et al., 2014ApJ...788...48S
- Kochanek et al., 2017PASP..129j4502K
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     Am Samstag, 17. April 2021, 20:15:20 MESZ hat Patrick Schmeer pasc1312-aavso at yahoo.de via vsnet-alert <vsnet-alert at ooruri.kusastro.kyoto-u.ac.jp> Folgendes geschrieben:  

  ASASSN-14ht (UGSU:)
https://www.aavso.org/vsx/index.php?view=detail.top&oid=399524

Gaia detection (Gaia21bwu): "outburst in candidate CV, ASASSN-14ht"
http://gsaweb.ast.cam.ac.uk/alerts/alert/Gaia21bwu/
ASASSN-14ht 20210415.639 13.40G Gaia
ASASSN-14ht 20210415.713 13.38G Gaia

Complete ASAS-SN Sky Patrol light curve and data:
https://asas-sn.osu.edu/sky-patrol/coordinate/69a1203a-b539-4fd0-b211-7c1919d92a35
ASASSN-14ht 20210412.289 <16.63g ASN
ASASSN-14ht 20210414.275 15.51g ASN
ASASSN-14ht 20210415.272 13.31g ASN
ASASSN-14ht 20210416.338 13.38g ASN
ASASSN-14ht 20210416.362 13.39g ASN
ASASSN-14ht 20210417.339 13.38g ASN

The latest recorded long outburst (= superoutburst?) occurred from 2020 June 19 to July 3.
A short (= normal?) outburst was observed from 2020 November 6 to 8.
(both based on ATLAS and ASAS-SN Sky Patrol data)

Time-resolved photometry is urgently required.

Clear skies,
Patrick
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References:
All-Sky Automated Survey for Supernovae (ASAS-SN) Sky Patrol:
- Shappee et al., 2014ApJ...788...48S
- Kochanek et al., 2017PASP..129j4502K
Asteroid Terrestrial-impact Last Alert System (ATLAS):
- Tonry et al., 2018PASP..130f4505T
- Heinze et al., 2018AJ....156..241H
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    Am Mittwoch, 1. Mai 2019, 08:13:32 MESZ hat Taichi Kato <tkato at kusastro.kyoto-u.ac.jp> Folgendes geschrieben:  

 ASASSN-14ht light curve

  Long outbursts may be superoutbursts.

ASAS-SN data:
https://asas-sn.osu.edu/light_curves/0dce0924-b000-4896-b171-acb415d2b178

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