The host galaxy/AGN connection in nearby early-type galaxies. A new view of the origin of the radio-quiet/radio-loud dichotomy?

Abstract

[ABRIDGED] This is the third in a series of three papers exploring the connection between the multiwavelength properties of AGN in nearby early-type galaxies and the characteristics of their hosts. We selected 116 AGN candidates requiring a radio flux of 1 mJy. We classified the objects with HST images into ``core'' and ``power-law'' galaxies, on the basis of the nuclear slope of their brightness profiles. We used HST and Chandra data to isolate their nuclear emission to study the multiwavelength behaviour of their nuclei. The properties of the nuclei hosted by the 29 core galaxies were presented in Paper II. Core galaxies invariably host a radio-loud nucleus, with a median radio-loudness of Log R = 3.6 and an X-ray based radio loudness parameter of Log R,X = -1.3. Here we discuss the properties of the nuclei of the 22 ``power-law'' galaxies. They show a substantial excess of optical and X-ray emission with respect to core galaxies at the same level of radio luminosity. Conversely, their radio-loudness parameters, Log R ~ 1.6 and Log R,X ~ -3.3, are similar to those measured in Seyfert galaxies. Thus the radio-loudness of AGN hosted by early-type galaxies appears to be univocally related to the host's brightness profile: radio-loud AGN are only hosted by core galaxies, while radio-quiet AGN are found only in power-law galaxies. The brightness profile is determined by the galaxy's evolution, through its merger history; our results suggest that the same process sets the AGN flavour.

arXiv commentAccepted for publication in A&A

References in corpus (38)

• The slope of the black-hole mass versus velocity dispersion correlation
• The Relation between Black Hole Mass, Bulge Mass, and Near-Infrared Luminosity
• A Search for "Dwarf" Seyfert Nuclei. III. Spectroscopic Parameters and Properties of the Host Galaxies
• Advection-Dominated Accretion: Self-Similarity and Bipolar Outflows
• The Centers of Early-Type Galaxies with HST. IV. Central Parameter Relations
• Quasars, their host galaxies, and their central black holes
• The Centers of Early-Type Galaxies with HST. V. New WFPC2 Photometry
• Chandra Snapshot Observations of Low-Luminosity AGNs with a Compact Radio Source
• The Difference between Radio-Loud and Radio-Quiet Active Galaxies
• A New Empirical Model for the Structural Analysis of Early-type Galaxies and a Critical Review of the Nuker Model
• Near-infrared template spectra of normal galaxies: k-corrections, galaxy models and stellar populations
• Nuclear Luminosities and Radio Loudness of Seyfert Nuclei
• Radio Sources in Low-Luminosity Active Galactic Nuclei. III. "AGNs" in a Distance-Limited Sample of "LLAGNs"
• Continuum and Emission Line Strength Relations for a large Active Galactic Nuclei Sample
• The Importance of Dry and Mixed Mergers for Early-Type Galaxy Formation
• Radio Structures of Seyfert Galaxies. VIII. A Distance and Magnitude Limited Sample of Early-Type Galaxies
• Galaxy Cores as Relics of Black Hole Mergers
• Radio Sources in Low-Luminosity Active Galactic Nuclei. I. VLA Detections of Compact, Flat-Spectrum Cores
• Nuclear Accretion in Galaxies of the Local Universe: Clues from Chandra Observations
• The Chandra view of the 3C/FRI sample of low luminosity radio-galaxies
• Evolution of Massive Black Hole Binaries
• Is there a Dichotomy in the Radio Loudness Distribution of Quasars?
• The host galaxy/AGN connection in nearby early-type galaxies. Is there a miniature radio-galaxy in every "core" galaxy?
• Further Clues to the Nature of Composite LINER/HII Galaxies
• Nuclear Cusps and Cores in Early-type Galaxies As Relics of Binary Black Hole Mergers
• The HST view of LINERs nuclei: evidence for a dual population?
• An Unusual Radio Galaxy in Abell 428: A Large, Powerful FR I Source in a Disk-Dominated Host
• Chandra Observations of NGC 4438: An Environmentally Damaged Galaxy in the Virgo Cluster
• The Density and Location of the X-ray Absorbing Gas in NGC 3516
• The host galaxy/AGN connection in nearby early-type galaxies. Sample selection and hosts brightness profiles
• The Radio Properties of Composite LINER/HII Galaxies
• The HST view of the nuclear emission line region in low luminosity radio-galaxies
• Are radio galaxies and quiescent galaxies different? Results from the analysis of HST brightness profiles
• Spiral Galaxies with HST/NICMOS. II. Isophotal Fits and Nuclear Cusp Slopes
• The Seyfert Population in the Local Universe
• Structural evolution in elliptical galaxies: the age-shape relation
• Relation between dust and radio luminosity in optically selected early type galaxies
• The X-ray Emission from the Nucleus of the Dwarf Elliptical Galaxy NGC 3226

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