0000000000292246

AUTHOR

Mara Salvato

showing 2 related works from this author

ELDAR, a new method to identify AGN in multi-filter surveys: the ALHAMBRA test case

2017

We present ELDAR, a new method that exploits the potential of medium- and narrow-band filter surveys to securely identify active galactic nuclei (AGN) and determine their redshifts. Our methodology improves on traditional approaches by looking for AGN emission lines expected to be identified against the continuum, thanks to the width of the filters. To assess its performance, we apply ELDAR to the data of the ALHAMBRA (Advance Large Homogeneous Area Medium Band Redshift Astronomical) survey, which covered an effective area of 2.38 deg2 with 20 contiguous medium-band optical filters down to F814W ≃ 24.5. Using two different configurations of  ELDAR in which we require the detection of at lea…

Cosmology and Nongalactic Astrophysics (astro-ph.CO)Active galactic nucleusactive [Galaxies][ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph]Continuum (design consultancy)FOS: Physical sciencesAstrophysicsSurveys01 natural sciencestechniques: photometricemission lines [Quasars]Galaxies: distances and redshiftssurveys0103 physical sciencesdistances and redshifts [Galaxies]Emission spectrumOptical filterdata analysis [Methods]010303 astronomy & astrophysicsPhysicsANÁLISE DE DADOSNumber density010308 nuclear & particles physicsphotometric [Techniques]galaxies: active – galaxies: distances and redshiftsAstronomy and AstrophysicsFilter (signal processing)Galaxies: activeAstrophysics - Astrophysics of Galaxiesmethods: data analysisGalaxyRedshiftquasars: emission linesSpace and Planetary ScienceAstrophysics of Galaxies (astro-ph.GA)[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]Astrophysics - Cosmology and Nongalactic AstrophysicsMonthly Notices of the Royal Astronomical Society
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The Chandra COSMOS Survey, I: Overview and Point Source Catalog

2009

The Chandra COSMOS Survey (C-COSMOS) is a large, 1.8 Ms, Chandra} program that has imaged the central 0.5 sq.deg of the COSMOS field (centered at 10h, +02deg) with an effective exposure of ~160ksec, and an outer 0.4sq.deg. area with an effective exposure of ~80ksec. The limiting source detection depths are 1.9e-16 erg cm(-2) s(-1) in the Soft (0.5-2 keV) band, 7.3e(-16) erg cm^-2 s^-1 in the Hard (2-10 keV) band, and 5.7e(-16) erg cm(-2) s(-1) in the Full (0.5-10 keV) band. Here we describe the strategy, design and execution of the C-COSMOS survey, and present the catalog of 1761 point sources detected at a probability of being spurious of <2e(-5) (1655 in the Full, 1340 in the Soft, and…

PhysicsHigh Energy Astrophysical Phenomena (astro-ph.HE)Cosmology and Nongalactic Astrophysics (astro-ph.CO)Field (physics)biologyInfraredPoint sourceFluxFOS: Physical sciencesAstronomy and AstrophysicsAstrophysicsLimitingbiology.organism_classificationAcisSpace and Planetary SciencePoint (geometry)Astrophysics - High Energy Astrophysical Phenomenacatalogs – cosmology: observations – galaxies: evolution – quasars: general – surveys – X-rays: generalCosmosAstrophysics - Cosmology and Nongalactic Astrophysics
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