Outbursts of luminous blue variable stars from variations in the helium opacity [PDF]
Nature, 2018 Luminous blue variables are massive, evolved stars that exhibit large variations in luminosity and size on timescales from months to years, with high associated rates of mass loss1–5. In addition to this on-going variability, these stars exhibit outburst
Yan-Fei Jiang +5 more
semanticscholar +1 more source
Extrasolar planets and possibility of the life appearance
Odessa Astronomical Publications, 2017 Review opened to November, 2006 extrasolar planetary ...
I. Kuzenkov +3 more
doaj +1 more source
Studying bright variable stars with the Multi-site All-Sky CAmeRA (MASCARA) [PDF]
Astronomy & Astrophysics, 2018 Context. The Multi-site All-Sky CAmeRA (MASCARA) aims to find the brightest transiting planet systems by monitoring the full sky at magnitudes 4 < V < 8.4, taking data every 6.4 s. The northern station has been operational on La Palma since February 2015.
O. Burggraaff +8 more
semanticscholar +1 more source
Investigating Stellar Variability in the Open Cluster Region NGC 381
The Astronomical Journal, 2023 We study variable stars in the field of the open cluster NGC 381 using photometric data observed over 27 nights and identify a total of 57 variable stars, six of which are member stars. The variable stars are classified based on their periods, amplitudes,
Jayanand Maurya +3 more
doaj +1 more source
Unsupervised classification of variable stars [PDF]
, 2018 During the last ten years, a considerable amount of effort has been made to develop algorithms for automatic classification of variable stars. That has been primarily achieved by applying machine learning methods to photometric datasets where objects are
L. Valenzuela, K. Pichara
semanticscholar +1 more source
Detection of Variable Stars in the Open Cluster M11 Using Difference Image Analysis Pipeline [PDF]
Journal of Astronomy and Space Sciences, 2010 We developed a photometric pipeline to be used for a wide field survey. This pipeline employs the difference image analysis (DIA) method appropriate for the photometry of star dense field such as the Galactic bulge.
Chung-Uk Lee +5 more
doaj +1 more source
Observations of red-giant variable stars by Aboriginal Australians [PDF]
, 2017 Aboriginal Australians carefully observe the properties and positions of stars, including both overt and subtle changes in their brightness, for subsistence and social application. These observations are encoded in oral tradition.
semanticscholar +1 more source
Dwarf nova-type cataclysmic variable stars are significant radio emitters [PDF]
, 2016 We present 8–12 GHz radio light curves of five dwarf nova (DN) type cataclysmic variable stars (CVs) in outburst (RX And, U Gem, and Z Cam), or superoutburst (SU UMa and YZ Cnc), increasing the number of radio-detected DN by a factor of 2.
D. Coppejans +9 more
semanticscholar +1 more source
The ISLAnds Project. III. Variable Stars in Six Andromeda Dwarf Spheroidal Galaxies [PDF]
, 2017 We present a census of variable stars in six M31 dwarf spheroidal satellites observed with the Hubble Space Telescope. We detect 870 RR Lyrae (RRL) stars in the fields of And I (296), II (251), III (111), XV (117), XVI (8), and XXVIII (87).
C. Martínez-Vázquez +17 more
semanticscholar +1 more source
Automatic Survey-invariant Classification of Variable Stars [PDF]
, 2017 Machine learning techniques have been successfully used to classify variable stars on widely studied astronomical surveys. These data sets have been available to astronomers long enough, thus allowing them to perform deep analysis over several variable ...
Patricio Benavente +2 more
semanticscholar +1 more source