English

Recurrent and symbiotic novae in the OGLE data

Solar and Stellar Astrophysics 2014-07-21 v2

Abstract

We analyse long-term optical photometry for two Galactic recurrent novae (V745 Sco and V3890 Sgr) and one Large Magellanic Cloud object (Nova LMC 1990b) observed over several years by the Optical Gravitational Lensing Experiment (OGLE) sky survey. We do not find variability with the 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 (with periods of 136.5 and 77.4 d). The photometry of Nova LMC 1990b reveals an unnoticed eruption in 2010 and eclipse-like variability in quiescence with a period of 1.26432(8) d. The photometric properties make this object very similar to U Sco. Finally, we describe the eruptions of two likely symbiotic novae, V5590 Sgr and OGLE-2011-BLG-1444. The secondary of V5590 Sgr is a Mira star with pulsation period of 236 d.

Keywords

Cite

@article{arxiv.1405.2007,
  title  = {Recurrent and symbiotic novae in the OGLE data},
  author = {P. Mroz and R. Poleski and A. Udalski and I. Soszynski and M. K. Szymanski and M. Kubiak and G. Pietrzynski and L. Wyrzykowski and K. Ulaczyk and S. Kozlowski and P. Pietrukowicz and J. Skowron},
  journal= {arXiv preprint arXiv:1405.2007},
  year   = {2014}
}

Comments

8 pages, 7 figures, published in MNRAS

R2 v1 2026-06-22T04:09:26.487Z