Results 21 to 30 of about 72,602 (290)
Database of Molecular Masers and Variable Stars [PDF]
, 2018 We present the database of maser sources in H2O, OH and SiO lines that can be used to identify and study variable stars at evolved stages. Detecting the maser emission in H2O, OH and SiO molecules toward infrared-excess objects is one of the methods of ...
Ladeyschikov, D. A. +2 more
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Envelope tomography of long-period variable stars [PDF]
Astronomy & Astrophysics, 2001 A tomographic method is described that makes it possible to follow the propagation of shock waves across the photosphere of long-period variable stars. The method relies on the correlation of the observed spectrum with numerical masks probing layers of different atmospheric depths. The formation depth of spectral lines is derived from synthetic spectra
Alvarez, Rodrigo +5 more
openaire +5 more sources
Variable stars of long period [PDF]
Astronomische Nachrichten, 1906 Mode of access: Internet.
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Search for variable stars in the young open cluster Stock 18
EPJ Web of Conferences, 2017 We have carried out multi-epoch deep I band photometry of the open cluster Stock 18 to search for variable stars in star forming regions. In the present study, we report identification of 28 periodic and 165 non-periodic variables stars.
Sinha Tirthendu +3 more
doaj +1 more source
Stellar variability in open clusters. I. A new class of variable stars in NGC 3766 [PDF]
, 2013 Aims. We analyze the population of periodic variable stars in the open cluster NGC 3766 based on a 7-year multi-band monitoring campaign conducted on the 1.2 m Swiss Euler telescope at La Silla, Chili. Methods.
Barblan, F. +3 more
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A New Period Determination Method for Periodic Variable Stars
Publications of the Astronomical Society of the Pacific, 2022 Abstract Variable stars play a key role in understanding the Milky Way and the universe. The era of astronomical big data presents new challenges for quick identification of interesting and important variable stars. Accurately estimating the periods is the most important step to distinguish different types of variable stars.
Xiao-Hui Xu +6 more
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The WFCAM Multi-wavelength Variable Star Catalog [PDF]
, 2014 Stellar variability in the near-infrared (NIR) remains largely unexplored. The exploitation of public science archives with data-mining methods offers a perspective for the time-domain exploration of the NIR sky.
Angeloni, R. +6 more
core +5 more sources
Phase-Night Diagram for Periodic Variable Stars [PDF]
Symposium - International Astronomical Union, 1986 A program has been developed for the Hewlett-Packard Computer 9845 to represent in a graphical form the period of observability, for individual nights, of periodic phenomena of stars with respect to the phase. One version of the program (Fig. 1) gives the observability with respect to the phase for the whole year. The other version (Fig.
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“Inter-Longitude Astronomy” project: long period variable stars [PDF]
Advances in Astronomy and Space Physics, 2014 This article contains the highlights of complex studies of long-period variable stars such as Miras: semiregular, symbiotic (particularly, pulsating symbiotic), as well as RV Tauri-type stars. In the course of these studies, important characteristics of mean light curves were determined.
Andronov, I.L. +3 more
openaire +2 more sources
A Population of Dipper Stars from the Transiting Exoplanet Survey Satellite Mission
The Astrophysical Journal Supplement Series, 2022 Dipper stars are a classification of young stellar objects that exhibit dimming variability in their light curves, dropping in brightness by 10%–50%, likely induced by occultations due to circumstellar disk material.
Benjamin K. Capistrant +14 more
doaj +1 more source