195 citations · 365 across the 18 of their papers we have counts for
19 papers · 1 filter
Mergers may not be the main channel for galaxy stellar mass growth at redshift : Predictions from cosmological hierarchical models and simulations
Hao Fu, Mohammadreza Ayromlou, Francesco Shankar +13
Mergers are a crucial channel of galaxy growth, but their role relative to star formation remains uncertain at high redshift. Here we investigate merger rates and merger-driven ste…
The incidence and star-formation properties of X-ray active galactic nuclei across the star-forming main sequence in DESI-eRASS1: the role of host-galaxy morphology
G. Mountrichas, F. J. Carrera, V. A. Masoura +3
The interplay between star formation and supermassive black-hole growth is central to galaxy evolution, but how host-galaxy morphology regulates star-formation enhancement and AGN…
Black hole mass, host galaxy mass, and dark matter halos: Testing the environmental connection
G. Mountrichas, F. Shankar, F. J. Carrera +1
We investigate the connection between supermassive black holes (SMBHs), their host galaxies, and large-scale dark-matter halos using broad-line X-ray AGN from the XMM--XXL and Stri…
Fueling, Evolution, and Diversity of AGN in Dwarf Galaxies: Insights from Star Formation and Black Hole Scaling Relations
G. Mountrichas, M. Siudek, F. J. Carrera
We investigate the star formation activity and black hole scaling relations in a sample of 1451 AGN hosted by dwarf galaxies at redshift 0.5 to 0.9, drawn from the VIPERS survey. T…
The miniJPAS Survey: The radial distribution of star formation rates in faint X-ray active galactic nuclei
Nischal Acharya, Silvia Bonoli, Mara Salvato +35
We study the impact of black hole nuclear activity on both the global and radial star formation rate (SFR) profiles in X-ray-selected active galactic nuclei (AGN) in the field of m…
A comparative analysis of the active galactic nucleus and star formation characteristics of broad and narrow line Seyfert 1 galaxies
Kshama S. Kurian, C. S. Stalin, S. Rakshit +4
We report here our comparative analysis of active galactic nucleus (AGN) and star formation (SF) characteristics of a sample of narrow-line Seyfert 1 (NLS1) and broad-line Seyfert…
Extinction and AGN over host galaxy contrast effects on the optical spectroscopic classification of AGN
L. Barquín-González, S. Mateos, F. J. Carrera +9
The optical spectroscopic classification of active galactic nuclei (AGN) into type 1 and type 2 can be understood in the frame of the AGN unification models. However, it remains un…
Probing star formation rates and histories in AGN and non-AGN galaxies across diverse cosmic environments and extensive X-ray luminosity ranges
G. Mountrichas, M. Siudek, O. Cucciati
In this work, we compare the SFRs and SFHs of AGN and non-AGN galaxies. We explore these aspects across different density fields and over three orders of magnitude in L. For th…
A Cigale module tailored (not only) for Low-Luminosity AGN
I. E. López, G. Yang, G. Mountrichas +17
The spectral energy distribution (SED) of low-luminosity active galactic nuclei (LLAGN) presents challenges due to their faint emissions and the complexity of their accretion proce…
Comparative analysis of the SFR of AGN and non-AGN galaxies, as a function of stellar mass, AGN power, cosmic time and obscuration
G. Mountrichas, V. A. Masoura, A. Corral +1
This study involves a comparative analysis of the SFRs of AGN and non-AGN galaxies and of the SFRs of type 1 and 2 AGN. To carry out this investigation, we assembled a dataset cons…
The link between star-formation and supermassive black hole properties
George Mountrichas, Veronique Buat
It is well known that supermassive black holes (SMBHs) and their host galaxies co-evolve. AGN feedback plays an important role on this symbiosis. To study the effect of the AGN fee…
The relation of cosmic environment and morphology with the star formation and stellar populations of AGN and non-AGN galaxies
G. Mountrichas, G. Yang, V. Buat +5
In this work, we study the relation of cosmic environment and morphology with the star-formation (SF) and the stellar population of galaxies. Most importantly, we examine if this r…
Star formation in the dwarf Seyfert galaxy NGC 4395: Evidence for both AGN and SNe feedback?
Payel Nandi, C. S. Stalin, D. J. Saikia +5
We present a detailed multi-wavelength study of star formation in the dwarf galaxy NGC 4395 which hosts an active galactic nucleus (AGN). From our observations with the Ultra-Viole…
The coevolution of supermassive black holes and galaxies in luminous AGN over a wide range of redshift
George Mountrichas
It is well known that supermassive black holes (SMBHs) and their host galaxies co-evolve. A manifestation of this co-evolution is the correlation that has been found between the SM…
Comparing the host galaxy ages of X-ray selected AGN in COSMOS: Obscured AGN are associated with older galaxies
I. Georgantopoulos, E. Pouliasis, G. Mountrichas +3
We explore the properties of the host galaxies of X-ray selected AGN in the COSMOS field using the Chandra Legacy sample and the LEGA-C survey VLT optical spectra. Our main goal is…
Testing the evolutionary pathways of galaxies and their supermassive black holes and the impact of feedback from Active Galactic Nuclei via large multiwavelength datasets
George Mountrichas, Francesco Shankar
It is still a matter of intense debate how supermassive black holes (SMBH) grow, and the role played by feedback from active galactic nuclei (AGN) in the co-evolution of SMBHs and…
Comparison of star formation histories of AGN and non-AGN galaxies
G. Mountrichas, V. Buat, G. Yang +6
We use AGN with , from the COSMOS-Legacy survey that lie within the UltraVISTA region and cross match them with the LEGA-C catalogue. The…
The distribution of radio quiet active galactic nuclei in the star formation-stellar mass plane
D. Garofalo, G. Mountrichas
That active galactic nuclei (AGN) with jets can alternately enhance as well as suppress star formation rates, explains the location and slope of radio loud AGN on the star formatio…
Fitting AGN/galaxy X-ray-to-radio SEDs with CIGALE and improvement of the code
Guang Yang, Médéric Boquien, William N. Brandt +11
Modern and future surveys effectively provide a panchromatic view for large numbers of extragalactic objects. Consistently modeling these multiwavelength survey data is a critical…