Results 31 to 40 of about 4,745,474 (343)

Investigating Stellar Variability in the Open Cluster Region NGC 381

open access: yesThe 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

Studying bright variable stars with the Multi-site All-Sky CAmeRA (MASCARA) [PDF]

open access: yesAstronomy & 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

SOME RESULTS OF THE U CrB OBSERVATIONS IN 1856 - 2007

open access: yesOdessa Astronomical Publications, 2017
Historical results over of photometry of eclipsing variable star U CrB (type of EA / SD) are brought after 1856 - 2007. Authors suppose that in the system U CrB there is a trade-out by a substance between components.
V. D. Grigorenko   +3 more
doaj   +1 more source

Gaia and variable stars [PDF]

open access: yesProceedings of the International Astronomical Union, 2013
AbstractThe study of variable phenomena (periodic, irregular or transient) provides a unique way to acquire knowledge about objects in our Universe. Currently, we are going through a rapid expansion of time-domain astrophysics. One reason for this expansion is the technological developments materialised in small to medium size observational projects ...
{Eyer} L., {Holl} B., {Mowlavi} N.
openaire   +3 more sources

Variable stars in clusters [PDF]

open access: yesAstronomische Nachrichten, 1898
n ...
S. I. Bailey, E. C. Pickering
openaire   +4 more sources

Extrasolar planets and possibility of the life appearance

open access: yesOdessa Astronomical Publications, 2017
Review opened to November, 2006 extrasolar planetary ...
I. Kuzenkov   +3 more
doaj   +1 more source

Observational Properties of 155 O- and B-type Massive Pulsating Stars

open access: yesThe Astrophysical Journal Supplement Series, 2023
O- and B-type (OB-type) pulsating stars are important objects for studying the structure and evolution of massive stars through asteroseismology. A large amount of data from various sky surveys provides an unprecedented opportunity to search for and ...
Xiang-dong Shi   +5 more
doaj   +1 more source

Unsupervised classification of variable stars [PDF]

open access: yes, 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

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