5,037 datasets found

Keywords: Photometry

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  • Optically Variable Quasars in AllWISE/PS1

    This catalog presents a sample of 229236 optically variable quasar candidates identified in the AllWISE and Pan-STARRS1 data releases at 2-sigma and 3-sigma variability levels....
  • Delta Scuti Network photometric data. 4 CVn

    Nearly 1000 nights of high-precision photometry of the delta Scuti variable 4 CVn were obtained from 1966 to 2012. These data led to the discovery of 64+ frequencies of...
  • uvby photometry of theta Tucanae

    theta Tucanae (HR 139, V=6.11, A7 IV) is a binary with a delta Scuti primary that was the subject of several photometric monitoring campaigns during the 1970s and again in the...
  • CCD photometry of CY Aqr 2012-2015

    Based on more than 50 partial nights of CCD monitoring, we derive 118 new times of maximum light of the SX Phoenicis star CY Aquarii. These times support a linear ephemeris for...
  • 1972-1974 sigma Sco ubvy light curves

    This paper presents and discusses information about the observations and data reductions of a time series of photometric measurements of sigma Sco that has been collected in...
  • 180 APASS variable stars in Aquarius

    During a search for RR Lyr variable stars candidate members of the Aquarius stream, which led to the discovery of 71 such objects, we also discovered an additional 180 variables...
  • Long-term photometry of 11 RS CVn stars

    I present BVRI photometry of short-period (P<1d) eclipsing RS CVn binary star systems collected between 1988 and 2009 at Mount Laguna Observatory. Most of the data are for ER...
  • CY Aqr multiband photometry: 2011 season

    Based on more than a dozen partial nights of filterless CCD photometry combined with Stromgren uvby photomultiplier photometry, we derive 29 new times of maximum light of the SX...
  • CY Aqr differential light curves

    We present 24 new times of maximum of the SX Phoenicis star CY Aquarii. These times lead to a slightly more precise local linear ephemeris for 2003-2010.
  • 1961-1999 UBV photometry of 14 variables

    Photoelectric UBV photometry of the variable stars V636 Cas, alpha UMi, V440 Per, zeta Gem, UU Cnc, TYC2-880-515-1, V473 Lyr, chi Cyg, V1794 Cyg, DT Cyg, V1334 Cyg, V532 Cyg, pi...
  • New times of maximum of CY Aqr

    We present a collection of 102 new times of maximum of the SX Phoenicis star CY Aquarii. These times, together with 20 times of maximum taken from the literature, lead to a new...
  • VBLUW photometry of eclipsing binary stars

    VBLUW photometric observations of 13 eclipsing binary stars carried out by C.J. van Houten with the Walraven 5-color photometer between 1965 and 1978 are presented together with...
  • Time-series of 9 cataclysmic variables

    We present time-series photometry of nine cataclysmic variables: EI UMa, V844 Her, V751 Cyg, V516 Cyg, GZ Cnc, TY Psc, V1315 Aql, ASAS J002511+1217.2, V1315 Aql and LN UMa. The...
  • GSC04778-00152 photometry and spectroscopy

    Photometric and spectroscopic data of the southern contact binary GSC 04778-00152 are presented. Six new times of minimum are listed. For modelling purposes, we provide UBVRI...
  • BVRI light curves of some cool giant stars

    We examine Johnson BV and Cousins RI photometry of the cool giant stars HR 1105, HD 35155, HR 4088, TU CVn, IT Vir, and HR 7442, that the first author obtained with the Four...
  • UU Cnc UBVRI differential photometry

    We present UBVR photometric observations of the 96-day binary system UU Cancri (K4 III) obtained in 1972-1994. A relatively large scatter in the orbital light curves turned out...
  • Elements of southern eclipsing binaries

    A set of 442 eclipsing binaries was selected from the GCVS catalog (Kholopov et al., 2003) that had declination <0{deg}, minimum magnitude brighter than 13.0, and no...
  • Groups of stars in NGC 1893

    The distribution of 255 O-B9-A2, K-G stars and interstellar dust in the direction of the stellar cluster NGC 1893 is studied using V, B-V, and U-B photometric data. Sixteen...
  • Embedded binaries and their dense cores

    We explore the relationship between young, embedded binaries and their parent cores, using observations within the Perseus Molecular Cloud. We combine recently published Very...
  • UBVRI and CT1T2 photometry of 15 open clusters

    We present UBVRI and CT_1_T_2_ photometry for 15 catalogued open clusters of relative high brightness and compact appearance. From these unprecedented photometric data sets,...
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