A SysTematic seaRch fOr Dual Agns in meRgINg Galaxies (ASTRO-DARING) III: results from the SDSS spectroscopic surveys
arXiv:2111.00636 · doi:10.3847/1538-3881/ac1ce7
Abstract
As the third installment in a series systematically searching dual active galactic nuclei (AGN) amongst merging galaxies, we present the results of 20 dual AGNs found by using the SDSS fiber spectra. To reduce the flux contamination from both the fiber aperture and seeing effects, the angular separation of two cores in our merging galaxy pairs sample is restricted at least larger than 3 arcsec. By careful analysis of the emission lines, 20 dual AGNs are identified from 61 merging galaxies with their two cores both observed by the SDSS spectroscopic surveys. 15 of them are identified for the first time. The identification efficiency is about 32.79 (20/61), comparable to our former results (16 dual AGNs identified from 41 merging galaxies) based on the long-slit spectroscopy. Interestingly, two of the 20 dual AGNs show two prominent cores in radio images and their radio powers show they as the radio-excess AGNs. So far, 31 dual AGNs are found by our project and this is the current largest dual AGN sample, ever constructed with a consistent approach. This sample, together with more candidates from ongoing observations, is of vital importance to study the AGN physics and the coevolution between the supermassive black holes and their host galaxies.
14 pages, 26 figures, accepted by AJ
References in corpus (23)
- The Host Galaxies and Classification of Active Galactic Nuclei
- A Cosmological Framework for the Co-Evolution of Quasars, Supermassive Black Holes, and Elliptical Galaxies: I. Galaxy Mergers & Quasar Activity
- Improving the full spectrum fitting method: accurate convolution with Gauss-Hermite functions
- The Co-Evolution of Galaxies and Supermassive Black Holes: Insights from Surveys of the Contemporary Universe
- The Sloan Digital Sky Survey Quasar Catalog: Sixteenth Data Release
- The Sloan Digital Sky Survey-II Supernova Survey: Technical Summary
- A Compact Supermassive Binary Black Hole System
- The Last of FIRST: The Final Catalog and Source Identifications
- Galaxy pairs in the Sloan Digital Sky Survey - IX: Merger-induced AGN activity as traced by the Wide-field Infrared Survey Explorer
- Chandra unveils a binary Active Galactic Nucleus in Mrk463
- Active Galactic Nucleus Pairs from the Sloan Digital Sky Survey. I. The Frequency on ~ 5-100 kpc Scales
- MOJAVE: Monitoring of Jets in Active Galactic Nuclei with VLBA Experiments. XI. Spectral distributions
- Chandra Discovery of a Binary Active Galactic Nucleus in Mrk 739
- The DEEP2 Galaxy Redshift Survey: AEGIS Observations of a Dual AGN at z=0.7
- Buried AGNs in Advanced Mergers:Mid-infrared color selection as a dual AGN finder
- Radio-Selected Binary Active Galactic Nuclei from the Very Large Array Stripe 82 Survey
- Discovery of a close-separation binary quasar at the heart of a z~0.2 merging galaxy and its implications for low-frequency gravitational waves
- An Offset Seyfert 2 Nucleus in the Minor Merger System NGC 3341
- NuSTAR Resolves the First Dual AGN above 10 keV in SWIFT J2028.5+2543
- The Origin of Double-peaked Narrow Lines in Active Galactic Nuclei II: Kinematic Classifications for the Population at z < 0.1
- Discovery of a dual active galactic nucleus with ~ 8 kpc separation
- Was 49b: An Overmassive AGN in a Merging Dwarf Galaxy?
- Two in one? A possible dual radio-emitting nucleus in the quasar SDSS J1425+3231