Low-redshift quasars in the SDSS Stripe 82 II: associated companion galaxies and signature of star formation

Abstract

We present optical spectroscopy of the close companions of 22 low redshift (z<0.5) quasars (QSO) selected from a larger sample of QSO in the SDSS Stripe82 region for which both the host galaxy and the large scale environments have been investigated in our previous work. The new observations extend the number of QSO studied in our previous paper on close companion galaxies of 12 quasars. Our analysis here covers all 34 quasars from both this work and the previously published paper. We find that half of them (15 QSO; $\sim$44%) have at least one associated galaxy. Many (12 galaxies; $\sim$67%) of the associated companions exhibit [OII] 3727 A emission line as signature of recent star formation. The star formation rate (SFR) of these galaxies is modest (median SFR $\sim$ 4.3 M${}_{\odot }$ yr${}^{-1}$). For 8 QSO we are also able to detect the starlight of the host galaxy from which 3 have a typical spectrum of a post-starburst galaxy. Our results suggest that quasars do not have a strong influence on the star formation of their companion galaxies.

arXiv comment20 pages, 6 figures, accepted in MNRAS

References in corpus (83)

• Scikit-learn: Machine Learning in Python
• SciPy 1.0--Fundamental Algorithms for Scientific Computing in Python
• Array Programming with NumPy
• Star Formation in Galaxies Along the Hubble Sequence
• The Seventh Data Release of the Sloan Digital Sky Survey
• A Fundamental Relation Between Supermassive Black Holes and Their Host Galaxies
• Coevolution (Or Not) of Supermassive Black Holes and Host Galaxies
• The Demography of Massive Dark Objects in Galaxy Centres
• A Relationship Between Nuclear Black Hole Mass and Galaxy Velocity Dispersion
• Energy input from quasars regulates the growth and activity of black holes and their host galaxies
• Star Formation in the Milky Way and Nearby Galaxies
• Stellar Masses and Star Formation Histories for 10^5 Galaxies from the Sloan Digital Sky Survey
• Introducing the Illustris Project: Simulating the coevolution of dark and visible matter in the Universe
• A Unified, Merger-Driven Model for the Origin of Starbursts, Quasars, the Cosmic X-Ray Background, Supermassive Black Holes and Galaxy Spheroids
• K-corrections and filter transformations in the ultraviolet, optical, and near infrared
• Physical Models of Galaxy Formation in a Cosmological Framework
• Revisiting the Scaling Relations of Black Hole Masses and Host Galaxy Properties
• A Unified Model for the Evolution of Galaxies and Quasars
• A Cosmology Calculator for the World Wide Web
• Theoretical Challenges in Galaxy Formation
• Beyond the Bulge: a Fundamental Relation Between Supermassive Black Holes and Dark Matter Halos
• Black Holes in Galaxy Mergers: Evolution of Quasars
• Hubble Space Telescope Images of a Sample of Twenty Nearby Luminous Quasars
• Galaxy Pairs in the Sloan Digital Sky Survey I: Star Formation, AGN Fraction, and the Luminosity/Mass-Metallicity Relation
• COSMOS : Hubble Space Telescope Observations
• RVSAO 2.0: Digital Redshifts and Radial Velocities
• [OII] as a Star Formation Rate Indicator
• The bulk of the black hole growth since z~1 occurs in a secular universe: No major merger-AGN connection
• Major Galaxy Mergers Only Trigger the Most Luminous AGN
• A Fundamental Relation Between Compact Stellar Nuclei, Supermassive Black Holes, and Their Host Galaxies
• Fueling Low-Level AGN Activity Through the Stochastic Accretion of Cold Gas
• Galaxy Pairs in the 2dF Survey I. Effects of Interactions in the Field
• New Techniques for Relating Dynamically Close Galaxy Pairs to Merger and Accretion Rates : Application to the SSRS2 Redshift Survey
• The SDSS Coadd: 275 deg^2 of Deep SDSS Imaging on Stripe 82
• Galaxy Pairs in the Sloan Digital Sky Survey - II: The Effect of Environment on Interactions
• Galaxy And Mass Assembly (GAMA): Galaxy close-pairs, mergers, and the future fate of stellar mass
• Evidence for Merger Remnants in Early-Type Host Galaxies of Low-Redshift QSOs
• The Red-sequence Cluster Survey-2 (RCS-2): survey details and photometric catalog construction
• Is AGN feedback necessary to form red elliptical galaxies?
• [O II] Emission in Quasar Host Galaxies: Evidence for a Suppressed Star Formation Efficiency
• Host galaxies of luminous z$\sim$0.6 quasars: Major mergers are not prevalent at the highest AGN luminosities
• Interactions, star formation and AGN activity
• Incidence of WISE-Selected Obscured AGNs in Major Mergers and Interactions from the SDSS
• The local star-formation rate density: assessing calibrations using [OII], Ha and UV luminosities
• The Clustering of Galaxies around Quasars
• Galaxy pairs in the Sloan Digital Sky Survey - XII: The fuelling mechanism of low excitation radio-loud AGN
• Aperture-free star formation rate of SDSS star-forming galaxies
• The Clustering of AGN in the Sloan Digital Sky Survey
• Normal black holes in bulge-less galaxies: the largely quiescent, merger-free growth of black holes over cosmic time
• Properties of galaxies in SDSS Quasar environments at z < 0.2
• The Apparently Normal Galaxy Hosts for Two Luminous Quasars
• Star formation in high-redshift quasars: excess [O II] emission in the radio-loud population
• Low redshift quasars in the SDSS Stripe 82. The host galaxies
• The impact of bars and interactions on optically selected AGNs in spiral galaxies
• Secularly powered outflows from AGN: the dominance of non-merger driven supermassive black hole growth
• The connection between star formation and stellar mass: Specific star formation rates to redshift one
• The Role of Major Mergers and Nuclear Star Formation in Nearby Obscured Quasars
• Near-infrared adaptive optics imaging of high redshift quasars
• Evolution of the Major Merger Galaxy Pair Fraction at z < 1
• Using Galaxy Pairs to Probe Star Formation During Major Halo Mergers
• The Properties of Radio Galaxies and the Effect of Environment in Large Scale Structures at $z\sim 1$
• Post-Starburst Quasars: Bridging the Gap Between Post-Starburst Galaxies and Quasars
• Large scale environments of z<0.4 active galaxies
• The host galaxies of FeLoBAL quasars at z$\sim$0.9 are not dominated by recent major mergers
• Low redshift quasars in the SDSS Stripe 82. The local environments
• Interactions, star formation and extended nebulae in SDSS type 2 quasars at 0.3<~ z <~ 0.6
• Quasar-galaxy associations revisited
• Environments of Nearby Quasars in Sloan Digital Sky Survey
• The environmental properties of radio-emitting AGN
• Living with Neighbors. I. Observational Clues to Hydrodynamic Impact of Neighboring Galaxies on Star Formation
• The environments of intermediate-redshift QSOs: 0.3 < z < 0.7
• The Effect of Minor and Major Mergers on the Evolution of Low Excitation Radio Galaxies
• A new sample of bright galaxy pairs in UZC
• Low redshift quasars in the SDSS Stripe 82. Host galaxy colors and close environment
• CANDELS Meets GSWLC: Evolution of the Relationship Between Morphology and Star Formation Since z = 2
• Stellar populations in hosts of giant radio galaxies and their neighbouring galaxies
• The Host Galaxies and Narrow Line Regions of Four Double-Peaked [OIII] AGN
• Star formation rates and chemical abundances of emission line galaxies in intermediate-redshift clusters
• Low redshift quasars in the SDSS Stripe 82: Associated companion galaxies and signature of star formation
• Quasars Have Fewer Close Companions than Normal Galaxies
• Circum-galactic medium in the halo of quasars
• Origin of companion galaxies in QSO hosts
• PHL 6625: A Minor Merger-Associated QSO Behind NGC 247

Cited by in corpus (3)

• Galaxy and Mass Assembly (GAMA): Low-redshift Quasars and Inactive Galaxies Have Similar Neighbors
• Low-redshift quasars in the SDSS Stripe 82 -- III MOS observations
• SDSS low z quasar companion galaxies