Results 11 to 20 of about 136,231 (311)
A Construction of an Automatic Observation System for Bright and Long Period Variable Stars [PDF]
Journal of Astronomy and Space Sciences, 2006 An automatic observation system has been constructed at Chungbuk National University for the purpose of monitoring the bright and long period variable stars effectively.
Joh-Na Yoon +3 more
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BM ERI - SR-TYPE VARIABLE STAR
Odessa Astronomical Publications, 2017 Based on 218 negatives from the Odessa plate collection, BM Eri is classified as an SRa-type star with a 565.d5 period; range in pv 6.m9 - 8.m5; spectrum gM6; more probable minimuma at JD 2439042, 2440183.4, 2446475.
I. S. Brukhanov
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Journal of Astronomy and Space Sciences, 2019 The purpose of this study was to develop a period analysis algorithm for detecting new variable stars in the time-series data observed by charge coupled device (CCD). We used the data from a variable star monitoring program of the CBNUO.
Kim, Dong-Heun +3 more
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On the irregular variations in the light curves of RY Vul
Odessa Astronomical Publications, 2018 The star RY Vul according General Catalogue of Variable Star (GCVS) is RR Lyr variable, but period and initial epoch are unknown. To determine these parameters the photometric observations during several seasons in 201 1-201 7 of the variable star RY Vul
S. N. Udovichenko, L. E. Keir
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An evolved donor star in the long-period cataclysmic variable HS 0218+3229 [PDF]
, 2009 Context. We present time-resolved spectroscopy and photometry of HS 0218+3229, a new long-period cataclysmic variable discovered within the Hamburg Quasar Survey.
Gänsicke, B. T. +17 more
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Photometric studies of be star variability [PDF]
Experimental Astronomy, 1994 Be stars are hot stars which have shown emission in at least one Balmer line on at least one occasion. As the definition implies, the Be phenomenon can be variable with time: on time scales of days to decades as the circumstellar disc develops and disperses; on time scales of days to months in a few Be stars which are interacting binaries; on time ...
openaire +1 more source
SOME EUROPEAN VARIABLE STAR OBSERVERS ORGANIZATIONS
Odessa Astronomical Publications, 2017 A subjective description and comparison of four groups of variable stars observers.
A. Paschke
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BD +20°1171 - LONG - PERIODIC VARIABLE STAR
Odessa Astronomical Publications, 2017 BD +20°1171 (= NSV 16732 = TYCHO 1320 91 1 = HD 39785 = SAO 077726) is a long-periodic pulsating variable star of SRc-type with a period of 20930d , range of variations in B 8.m8 - 10.m3, and the most realiable maximum is JD 2443410 ...
I. S. Brukhanov
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GENERAL CATALOGUE OF VARIABLE STARS: CURRENT STATUS AND NEW NAME-LISTS
Odessa Astronomical Publications, 2010 A short history of variable-star catalogs is presented. After the second World War, the International Astronomical Union asked astronomers of the Soviet Union to become responsible for variable-star catalogs. Currently, the catalog is kept electronically
N. N. Samus +4 more
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TIC 5724661: A Long-Period Binary with a Pulsating sdB Star and $\delta$ Scuti Variable
, 2022 Using TESS 20-sec cadence data, we have discovered an unusual combination of pulsating stars in what we infer to be a binary system. The binary consists of a standard $\delta$ Scuti star with pulsations over the range 32-41 d$^{-1}$; this is in a likely ...
Bieryla, Allyson +12 more
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