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Recurrent and Symbiotic Novae in the OGLE Data

We analyze long-term optical photometry for two Galactic recurrent novae (V745 Sco, V3890 Sgr) and one LMC object (Nova LMC 1990b) observed over several years by the OGLE sky survey.

We do not find variability with previously claimed orbital period of V745 Sco. This voids previous findings based on this value, e.g., the distance determination. The quiescence variability of this object is dominated by semiregular pulsations of the red giant secondary.

Light and color curve of V745 Sco

Light and color curve of V745 Sco

The photometry of Nova LMC 1990b reveals unnoticed eruption in 2010 and eclipse-like variability in quiescence with a period of 1.26432(8) d.

Light and color curve of Nova LMC 1990b

Light and color curve of Nova LMC 1990b

Finally, we describe eruptions of two likely symbiotic novae - V5590 Sgr and OGLE-2011-BLG-1444. The progenitor of V5590 Sgr was a Mira star with pulsation period of 236 d.

Light and color curve of V5590 Sgr

Light and color curve of V5590 Sgr

Light and color curve of OGLE-2011-BLG-1444

Light and color curve of OGLE-2011-BLG-1444

PLEASE cite the following paper when using the data or referring to these OGLE results:
Mroz et al., 2014, MNRAS, 443,784

Photometry of presented novae can be found here.

Any comments about the data and the form of their presentation are welcome. Send your messages to this address.

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