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MASTER-SAAO, MASTER-OAFA: optical transientsстатья
- Авторы: Shumkov V., Gress O., Lipunov, V
- Журнал: The Astronomer’s Telegram
- Том: 9950
- Номер: 1
- Год издания: 2017
- Первая страница: 1
- Аннотация: MASTER OT J154313.55-712056.3 discovery - new OT, possibly dwarf nova, Ampl>4.9m, no known VIZIER data MASTER-SAAO auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L ) discovered OT source at (RA, Dec) = 15h 43m 13.55s -71d 20m 56.3s on 2017-01-05.00719 UT. The OT unfiltered magnitude is 17.1m (mlim=18.6). The OT is seen in 3 images. There is no minor planet at this place. We have reference image on 2015-06-22.76253 UT with unfiltered mlim= 19.5m, on 2016-12-27 01:50:18UT with mlim=18.8 (unfiltered) There is no known sources in VIZIER database, it means more then 4.9mag amplitude of current outburst Spectral observations are required. The discovery and reference images are available at: "> http://master.sai.msu.ru/static/OT/154313.55-712056.3.png"> http://master.sai.msu.ru/static/OT/154313.55-712056.3.png MASTER OT J152615.50-424755.1 discovery - dwarf nova outburst, Ampl>4m MASTER-OAFA auto-detection system discovered OT source at (RA, Dec) = 15h 26m 15.50s -42d 47m 55.1s on 2017-01-04.34449 UT. The OT unfiltered magnitude is 16.7m (limit 17.6m). This OT is seen on 4 images on 04 Jan, and on 3 images on 05 Jan (m_OT=16.5). There is no any sources at MASTER-SAAO reference images on 2016-12-31 02:25:24UT with mlim=18.3, on 2016-06-29 19:09:08UT with mlim=20.0, on 2016-03-10 01:38:16UT with mlim=20.7 . We have previous outburst on 2016-01-18 01:15:36.712UT in MASTER-SAAO database with m_OT=16.6 (3 images). There is USNO-B1 blue star (also previous outburst) at POSS images. Spectral observations are required. The discovery and reference images are http://master.sai.msu.ru/static/OT/152615.50-424755.1.png
- Добавил в систему: Липунов Владимир Михайлович