New deep minimum of Romano's Star in M33
Abstract
After the luminosity minimum of 2007-2008 (V=18.6, Polcaro et al. 2011, AJ, 141, 18) and a moderate luminosity maximum at beginning 2011 (V=17.8), the Luminous Blue Variable GR290/Romano's Star in M33 has reached a new deep minimum with V=18.7 and R=18.4 in December 2013 which appears to be the deepest so far recorded in its known light history. Significant luminosity oscillations have been observed during the 2011-2013 declining phase.
- Publication:
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The Astronomer's Telegram
- Pub Date:
- February 2014
- Bibcode:
- 2014ATel.5846....1C
- Keywords:
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- Optical;
- Star;
- Variables