Results 31 to 40 of about 5,710,154 (292)
Photometric Search for variable stars in the field of two Northern open clusters, DOLIDGE 14 and NGC 1960 [PDF]
arXiv, 2021 The aim of present work is extract and analyses the light curves of the stars in the field of two clusters, NGC 1960 and DOLIDZE 14. The photometric calibration is performed by comprehensive method of secondary standard transformation and differential photometry using two comparison stars per candidate variable star. The resultant light curves for each
arxiv
Variable stars detection in the field of open cluster NGC 188 [PDF]
, 2023 This work presents the charge-coupled device (CCD) photometric survey of the old open cluster NGC 188. Time-series V-band photometric observations were conducted for ten nights in January 2017 using the Nanshan One-meter Wide-field Telescope (NOWT) to search for variable stars in the field of the cluster field.
arxiv +1 more source
Visualization of Categorical Response Models - from Data Glyphs to Parameter Glyphs [PDF]
, 2012 The multinomial logit model is the most widely used model for nominal multi-category responses. One problem with the model is that many parameters are involved, another that interpretation of parameters is much harder than for linear models because the ...
Schauberger, Gunther, Tutz, Gerhard
core +1 more source
The Catalina Surveys Southern periodic variable star catalogue
, 2017 Here, we present the results from our analysis of 6 yr of optical photometry taken by the Siding Spring Survey (SSS). This completes a search for periodic variable stars within the 30 000 deg^2 of the sky covered by the Catalina Surveys.
A. Drake +12 more
semanticscholar +1 more source
Variable stars in the globular cluster M13 [PDF]
Astron.Astrophys. 398 (2003) 541-550, 2002 Results of a search for variable stars in the central region of the globular cluster M13 are presented. Prior to this study, 36 variable and suspected variable stars were known in this cluster (Osborn 2000; Clement et al. 2001). Of these stars, five were not observed by us. We find v3, v4, v10, v12, and v13 to be constant in light.
arxiv +1 more source
A New Binary Star System of EW Type in Draco: GSC 03905-01870
, 2018 Discovery of a new binary star system (GSC 03905-01870 = USNO-B1.0 1431-0327922 = UCAC4 716-059522) in the Draco constellation is presented. It was discovered during a search for previously unreported eclipsing binary stars through the ASAS-SN database ...
Barquin, Salvador
core +3 more sources
A variable star survey of the open cluster M37 [PDF]
, 2001 A CCD photometric study of the dense galactic open cluster M37 is presented and discussed. The majority of the analysed data are time-series measurements obtained through an R_C filter.
B. Csák +22 more
core +3 more sources
Catalogue of variable stars in open cluster fields [PDF]
, 2012 We present the first catalogue of known variable stars in open cluster regions and with up to two times the given cluster radius. This gives basic information about the distribution of variable stars in cluster fields for the complete sky. Knowledge of the variable star contents in open clusters is a significant advantage in their study.
arxiv +1 more source
Simple nonlinear models suggest variable star universality
, 2015 Dramatically improved data from observatories like the CoRoT and Kepler spacecraft have recently facilitated nonlinear time series analysis and phenomenological modeling of variable stars, including the search for strange (aka fractal) or chaotic ...
Arnold +34 more
core +1 more source
HS 2237+8154 : on the onset of mass transfer or entering the period gap? [PDF]
, 2004 We report follow-up observations of a new white dwarf/red dwarf binary HS 2237+8154, identified as a blue variable star from the Hamburg Quasar Survey. Ellipsoidal modulation observed in the R band as well as the radial velocity variations measured from
Araujo-Betancor +32 more
core +2 more sources