Results 1 to 10 of about 5,702,760 (334)
Synergies between exoplanet surveys and variable star research [PDF]
EPJ Web of Conferences, 2017 With the discovery of the first transiting extrasolar planetary system back in 1999, a great number of projects started to hunt for other similar systems. Because the incidence rate of such systems was unknown and the length of the shallow transit events
Kovacs Geza
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Preliminary results of variable star search using KMTNet data [PDF]
EPJ Web of Conferences, 2017 The KMTNet (Korea Microlensing Telescope Network) was completed on October 2nd in 2015. There are three 1.6 m telescopes in Chile (CTIO), Australia (SSO) and South Africa (SAAO). The field of view of the CCD camera is 2 degree × 2 degree.
Jeon Young-Beom
doaj +2 more sources
An Optically Discovered Outburst from XTE J1859+226
The Astrophysical Journal, 2023 Using the Zwicky Transient Facility, in 2021 February we identified the first known outburst of the black hole X-ray transient XTE J1859+226 since its discovery in 1999. The outburst was visible at X-ray, UV, and optical wavelengths for less than 20 days,
Eric C. Bellm +15 more
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Parameters and Pulsation Constant of Cepheid
Particles, 2023 The analysis of fifty empirical period-radius relations and forty-three empirical period-luminosity relations is performed for the Cepheids. It is found that most of these relations have significant systematic errors.
Sergei V. Sinitsyn
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Variability in NGC 3201 Giant Stars
The Astronomical Journal, 2023 We present the analysis of 510 light curves in V and I bands of 255 giant stars in the globular cluster NGC 3201. Our aim is to expand the sample of new types of variables reported in a previous study. These variables show a short period ( P _V < 0.6 day)
C. C. Cortés +4 more
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Future of the General Catalogue of Variable Stars from the Experience of Recent Name-lists
Open Astronomy, 2021 We briefly outline the history of the General Catalogue of Variable Stars (GCVS) and the New Catalogue of Suspected Variable Stars (NSV catalogue). Recently, we have completed a revision of the NSV catalogue.
Samus Nikolay N. +5 more
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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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HD 66051, an eclipsing binary hosting a highly peculiar, HgMn-related star
Scientific Reports, 2017 HD 66051 is an eclipsing system with an orbital period of about 4.75 d that exhibits out-of-eclipse variability with the same period. New multicolour photometric observations confirm the longevity of the secondary variations, which we interpret as a ...
Ewa Niemczura +6 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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Using APASS and 2GSS for studying variable stars
EPJ Web of Conferences, 2017 The AAVSO Photometric All-Sky Survey (APASS) provides calibrated magnitudes in the range 7 < V < 17 for the entire sky, in the BVugriZsY bandpasses. While primarily designed for 0.02 mag calibration, it provides photometry over a many-year baseline, and ...
Henden Arne +5 more
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