Results 1 to 10 of about 31,576 (269)
The host galaxy/AGN connection. Brightness profiles of early-type galaxies hosting Seyfert nuclei [PDF]
Astronomy & Astrophysics, 2007 [ABRIDGED] We recently presented evidence of a connection between the brightness profiles of nearby early-type galaxies and the properties of the AGN they host. The radio loudness of the AGN appears to be univocally related to the host's brightness profile: radio-loud nuclei are only hosted by ``core'' galaxies while radio-quiet AGN are only found in ``
A. Capetti, B. Balmaverde
openalex +4 more sources
Star-Forming AGN Host Galaxies [PDF]
New Astronomy Reviews, 2001 The symbiosis of nuclear activity and star-formation in galaxies, as manifested in their spectral energy distributions (SEDs) is reviewed. Attention is drawn to an Hertzsprung-Russell diagram-equivalent for such objects, as well as to the importance of ...
Bregman +49 more
core +5 more sources
AGN Absorption Linked to Host Galaxies [PDF]
Proceedings of the International Astronomical Union, 2013 Multiwavelength identification of AGN is crucial not only to obtain a more complete census, but also to learn about the physical state of the nuclear activity (obscuration, efficiency, etc.).
Juneau, Stéphanie
core +2 more sources
A Morphological Study of AGN-host Dwarf Galaxies
The Astrophysical JournalThe study of morphology in galaxies offers a convenient and quantitative method to measure the shapes and characteristics of galaxy light distribution that reflect the evolutionary history.
Jie Tian +3 more
doaj +3 more sources
The Astrophysical JournalIn Paper I, we exploited the unsurpassed resolution and depth of JWST/NIRCam imagery to investigate the relationship between active galactic nuclei (AGN) and host-galaxy properties in the JWST era, finding a correlation between the level of spatial ...
Nina Bonaventura +5 more
doaj +2 more sources
Agn Host Galaxy Properties And Mass Function
, 2016 Supermassive black hole growth, nuclear activity, and galaxy evolution have been found to be closely related. In the context of AGN-galaxy coevolution, I will discuss about the relation found between the host galaxy properties and the central BH and I will present the latest determination of the host galaxy stellar mass function (HGMF), and the ...
A. Bongiorno
openalex +3 more sources
Colors of AGN host galaxies at 0.5
, 2004 We present the results from a study of the host galaxies of 15 optically selected AGNs with 0 ...
Sf F. Sanchez +15 more
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The smallest AGN host galaxies [PDF]
New Astronomy Reviews, 2006 We describe our efforts to study dwarf galaxies with active nuclei, whose black holes, with masses < 10^6 M_sun, provide the best current observational constraints on the mass distribution of primordial seed black holes. Although these low-mass galaxies do not necessarily contain classical bulges, Barth, Greene, & Ho (2005) show that their ...
Greene, J. E., Barth, A. J., Ho, L. C.
openaire +2 more sources
Relation between AGN type and host galaxy properties [PDF]
Astronomy & Astrophysics, 2021 We use 3213 active galactic nuclei (AGNs) from the XMM-XXL northern field to investigate the relation of AGN type with host galaxy properties. Applying a Bayesian method, we derive the hardness ratios, and through these the hydrogen column density (NH) for each source. We consider those with NH > 1021.5 cm−2 as absorbed sources (type 2).
Masoura, V. A. +3 more
openaire +3 more sources
Overmassive Black Holes in Dwarf Galaxies Out to z ∼ 0.9 in the VIPERS Survey
The Astrophysical Journal Letters, 2023 Supermassive black holes (SMBHs) are thought to originate from early universe seed black holes of mass M _BH ∼ 10 ^2 –10 ^5 M _⊙ and grown through cosmic time. Such seeds could be powering the active galactic nuclei (AGN) found in today’s dwarf galaxies.
Mar Mezcua +5 more
doaj +1 more source