English
Related papers

Related papers: The VVV Infrared Variability Catalog (VIVA-I)

200 papers

The Variable Star One-shot Project (VSOP) is aimed at (1) providing the variability type and spectral type of all unstudied variable stars, (2) process, publish, and make the data available as automatically as possible, and (3) generate…

The Hubble Source Catalog (HSC) combines lists of sources detected on images obtained with the WFPC2, ACS and WFC3 instruments aboard the Hubble Space Telescope (HST) available in the Hubble Legacy Archive. The catalog contains time-domain…

A complete catalogue of variable stars in the possible observing areas (``eyes'') of the CoRoT satellite is presented. All known data sources were cross-correlated and compiled confirming the variability of 81 stars formerly known as…

Astrophysics · Physics 2007-05-23 J. M. Benko , Z. Csubry

We present VIRAC2, a catalogue of positions, proper motions, parallaxes and $Z$, $Y$, $J$, $H$, and $K_s$ near-infrared photometric time series of 545 346 537 unique stars. The catalogue is based on a point spread function fitting reduction…

Stellar photometric variability offers a novel probe of the interior structure and evolutionary state of stars. Here we present a census of stellar variability on day to decade timescales across the color-magnitude diagram for 73,000 stars…

Robust fast methods to classify variable light curves in large sky surveys are becoming increasingly important. While it is relatively straightforward to identify common periodic stars and particular transient events (supernovae, novae,…

We present preliminary results of the CIDA Equatorial Variability Survey (CEVS), looking for quasar (hereafter QSO) candidates near the Galactic plane. The CEVS contains photometric data from extended and adjacent regions of the Milky Way…

The distribution of galaxies in the Zone of Avoidance (ZoA) is incomplete due to the presence of our own Galaxy. Our research focused on the identification and characterisation of galaxies in the ZoA, using the new near-infrared data from…

Variable sources probe a wide range of astrophysical phenomena. We present a catalog of over ten million variable source candidates found in Data Release 1 (DR1) of the Zwicky Transient Facility (ZTF). We perform a periodicity search up to…

Solar and Stellar Astrophysics · Physics 2020-11-04 Eran O. Ofek , Maayane Soumagnac , Guy Nir , Avishay Gal-Yam , Peter Nugent , Frank Masci , Shrinivas R. Kulkarni

We present the selection and classification of over a thousand ultraviolet (UV) variable sources discovered in ~ 40 deg^2 of GALEX Time Domain Survey (TDS) NUV images observed with a cadence of 2 days and a baseline of observations of ~ 3…

We report the detection of variable stars within a 11.5' x 11.5' region near the Galactic centre (GC) that includes the Arches and Quintuplet clusters, as revealed by the VISTA Variables in the Via Lactea (VVV) survey. There are 353 sources…

Solar and Stellar Astrophysics · Physics 2018-11-28 C. Navarro Molina , J. Borissova , M. Catelan , P. W. Lucas , N. Medina , C. Contreras Pena , R. Kurtev , D. Minniti

We present a catalog of 652 young stellar objects (YSOs) in the Carina star-forming region. The catalog was constructed by combining near-infrared Ks-band variability from the VISTA Variables in the Via Lactea eXtended survey and…

We accurately identify and classify the variability of A-F stars in the southern continuous viewing zone of the TESS satellite. The brightness limit was set to 10 mag to ensure the utmost reliability of our results and allow for…

Solar and Stellar Astrophysics · Physics 2024-08-06 M. Skarka , Z. Henzl

The aim of this study is to locate previously unknown stellar clusters from the VISTA variables in the V\'ia L\'actea Survey (VVV) catalogue data. The method, fitting a mixture model of Gaussian densities and background noise using the…

Astrophysics of Galaxies · Physics 2015-06-18 Otto Solin , Lauri Haikala , Esko Ukkonen

A comprehensive search for variable and transient radio sources has been conducted using ~55,000 snapshot images of the FIRST survey. We present an analysis leading to the discovery of 1,627 variable and transient objects down to mJy levels…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-30 Nithyanandan Thyagarajan , David J. Helfand , Richard L. White , Robert H. Becker

The ESO public survey VISTA Variables in the V\'ia L\'actea (VVV) surveyed the inner Galactic bulge and the adjacent southern Galactic disk from $2009-2015$. Upon its conclusion, the complementary VVV eXtended (VVVX) survey has expanded…

Astrophysics of Galaxies · Physics 2024-10-02 R. K. Saito , M. Hempel , J. Alonso-García , P. W. Lucas , D. Minniti , S. Alonso , L. Baravalle , J. Borissova , C. Caceres , A. N. Chené , N. J. G. Cross , F. Duplancic , E. R. Garro , M. Gómez , V. D. Ivanov , R. Kurtev , A. Luna , D. Majaess , M. G. Navarro , J. B. Pullen , M. Rejkuba , J. L. Sanders , L. C. Smith , P. H. C. Albino , M. V. Alonso , E. B. Amôres , R. Angeloni , J. I. Arias , M. Arnaboldi , B. Barbuy , A. Bayo , J. C. Beamin , L. R. Bedin , A. Bellini , R. A. Benjamin , E. Bica , C. J. Bonatto , E. Botan , V. F. Braga , D. A. Brown , J. B. Cabral , D. Camargo , A. Caratti o Garatti , J. A. Carballo-Bello , M. Catelan , C. Chavero , M. A. Chijani , J. J. Clariá , G. V. Coldwell , C. Contreras Peña , R. Contreras Ramos , J. M. Corral-Santana , C. C. Cortés , M. Cortés-Contreras , P. Cruz , I. V. Daza-Perilla , V. P. Debattista , B. Dias , L. Donoso , R. D'Souza , J. P. Emerson , S. Federle , V. Fermiano , J. Fernandez , J. G. Fernández-Trincado , T. Ferreira , C. E. Ferreira Lopes , V. Firpo , C. Flores-Quintana , L. Fraga , D. Froebrich , D. Galdeano , I. Gavignaud , D. Geisler , O. E. Gerhard , W. Gieren , O. A. Gonzalez , L. V. Gramajo , F. Gran , P. M. Granitto , M. Griggio , Z. Guo , S. Gurovich , M. Hilker , H. R. A. Jones , R. Kammers , M. A. Kuhn , M. S . N. Kumar , R. Kundu , M. Lares , M. Libralato , E. Lima , T. J. Maccarone , P. Marchant Cortés , E. L. Martin , N. Masetti , N. Matsunaga , F. Mauro , I. McDonald , A. Mejías , V. Mesa , F. P. Milla-Castro , J. H. Minniti , C. Moni Bidin , K. Montenegro , C. Morris , V. Motta , F. Navarete , C. Navarro Molina , F. Nikzat , J. L. Nilo Castellón , C. Obasi , M. Ortigoza-Urdaneta , T. Palma , C. Parisi , K. Pena Ramírez , L. Pereyra , N. Perez , I. Petralia , A. Pichel , G. Pignata , S. Ramírez Alegría , A. F. Rojas , D. Rojas , A. Roman-Lopes , A. C. Rovero , S. Saroon , E. O. Schmidt , A. C. Schröder , M. Schultheis , M. A. Sgró , E. Solano , M. Soto , B. Stecklum , D. Steeghs , M. Tamura , P. Tissera , A. A. R. Valcarce , C. A. Valotto , S. Vasquez , C. Villalon , S. Villanova , F. Vivanco Cádiz , R. Zelada Bacigalupo , A. Zijlstra , M. Zoccali

The Variables and Slow Transients (VAST) Survey on the Australian SKA Pathfinder (ASKAP) is designed to systematically explore the dynamic radio sky, detecting sources that vary on timescales from minutes to several years. In this paper, we…

We characterize the population of blue horizontal-branch (BHB) stars in the bulge-halo transition region of the Milky Way using the VISTA Variables in the V\'ia L\'actea (VVV) ESO Public Survey data. The selection of BHB stars is made using…

Solar and Stellar Astrophysics · Physics 2019-03-06 Katherine Montenegro , Dante Minniti , Javier Alonso-García , Maren Hempel , Roberto K. Saito , Timothy C. Beers , David Brown

Hot sub-luminous stars represent a population of stripped and evolved red giants that is located on the extreme horizontal branch. Since they exhibit a wide range of variability due to pulsations or binary interactions, it is crucial to…

Solar and Stellar Astrophysics · Physics 2025-01-29 P. Ranaivomanana , M. Uzundag , C. Johnston , P. J. Groot , T. Kupfer , C. Aerts