Extending the variability selection of active galactic nuclei in the W-CDF-S and SERVS/SWIRE region
arXiv:2001.02560 · doi:10.1051/0004-6361/201937108
Abstract
Variability has proven to be a powerful tool to detect active galactic nuclei (AGN) in multi-epoch surveys. The new-generation facilities expected to become operational in the next few years will mark a new era in time-domain astronomy and their wide-field multi-epoch campaigns will favor extensive variability studies. We present our analysis of AGN variability in the second half of the VST survey of the Wide Chandra Deep Field South (W-CDF-S), performed in the r band and covering a 2 sq. deg. area. The analysis complements a previous work, in which the first half of the area was investigated. We provide a reliable catalog of variable AGN candidates, which will be critical targets in future variability studies. We selected a sample of optically variable sources and made use of infrared data from the Spitzer mission to validate their nature by means of color-based diagnostics. We obtain a sample of 782 AGN candidates among which 12 are classified as supernovae, 54 as stars, and 232 as AGN. We estimate a contamination and a completeness with respect to mid-infrared selected samples.
References in corpus (31)
- Coevolution (Or Not) of Supermassive Black Holes and Host Galaxies
- The Demography of Massive Dark Objects in Galaxy Centres
- LSST: from Science Drivers to Reference Design and Anticipated Data Products
- Observational Evidence of AGN Feedback
- Mid-Infrared Selection of Active Galaxies
- A unified model for AGN feedback in cosmological simulations of structure formation
- Cosmological simulations of the growth of supermassive black holes and feedback from active galactic nuclei: method and tests
- SWIRE: The SIRTF Wide-area InfraRed Extragalactic Survey
- Obscured and unobscured active galactic nuclei in the Spitzer Space Telescope First Look Survey
- Identifying Luminous AGN in Deep Surveys: Revised IRAC Selection Criteria
- Cosmic X-ray Surveys of Distant Active Galaxies: The Demographics, Physics, and Ecology of Growing Supermassive Black Holes
- Optical spectroscopy and X-ray detections of a sample of quasars and AGN selected in the mid-infrared from two Spitzer wide-area surveys
- The Spitzer Extragalactic Representative Volume Survey (SERVS): survey definition and goals
- Evidence for AGN Feedback in Galaxy Clusters and Groups
- Spectral energy distributions and luminosities of galaxies and AGN in the SPITZER SWIRE Legacy Survey
- X-rays across the galaxy population - III. The incidence of AGN as a function of star formation rate
- ALMA and Herschel reveal that X-ray selected AGN and main-sequence galaxies have different star formation rate distributions
- Pan-STARRS1 variability of XMM-COSMOS AGN. II. Physical correlations and power spectrum analysis
- Supernova rates from the SUDARE VST-Omegacam search. I
- The XMM-SERVS survey: new XMM-Newton point-source catalog for the XMM-LSS field
- A novel variability-based method for quasar selection: evidence for a rest frame ~54 day characteristic timescale
- A new extensive catalog of optically variable AGN in the GOODS Fields and a new statistical approach to variability selection
- Variability-selected Active Galactic Nuclei in the VST-SUDARE/VOICE Survey of the COSMOS Field
- Variability-selected active galactic nuclei from supernova search in the Chandra deep field south
- Variability-based AGN selection using image subtraction in the SDSS and LSST era
- Variability and Multiwavelength Detected AGN in the GOODS Fields
- Optically variable active galactic nuclei in the 3 yr VST survey of the COSMOS field
- Robust Identification of Active Galactic Nuclei through HST Optical Variability in GOODS-S: Comparison with the X-ray and mid-IR Selected Samples
- SUDARE-VOICE variability-selection of Active Galaxies in the Chandra Deep Field South and the SERVS/SWIRE region
- The QUEST-La Silla AGN Variability Survey
- A weak lensing analysis of the Abell 383 cluster
Cited by in corpus (13)
- The XMM-SERVS survey: XMM-Newton point-source catalogs for the W-CDF-S and ELAIS-S1 fields
- Dwarf AGNs from Optical Variability for the Origins of Seeds (DAVOS): Insights from the Dark Energy Survey Deep Fields
- A structure function analysis of VST-COSMOS AGN
- A random forest-based selection of optically variable AGN in the VST-COSMOS field
- Ensemble power spectral density of SDSS quasars in UV/optical bands
- Radio AGN Selection and Characterization in Three Deep-Drilling Fields of the Vera C. Rubin Observatory Legacy Survey of Space and Time
- Continuum optical-UV and X-ray variability of AGN: current results and future challenges
- Selection of optically variable active galactic nuclei via a random forest algorithm
- Variability and transient search in the SUDARE-VOICE field: a new method to extract the light curves
- Identification of problematic epochs in astronomical time series through transfer learning
- Lenses In VoicE (LIVE): Searching for strong gravitational lenses in the VOICE@VST survey using Convolutional Neural Networks
- AGILE: an end-to-end Rubin-LSST simulation of AGNs, galaxies, and stars I. Software description and first data release
- Properties of Polarized Radio Sources in the Wide Chandra Deep Field South from 2 to 4GHz