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… - Astronomy & …, 2023 - aanda.org
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 …

Testing the evolutionary pathways of galaxies and their supermassive black holes and the impact of feedback from active galactic nuclei via large multiwavelength …

G Mountrichas, F Shankar - Monthly Notices of the Royal …, 2023 - academic.oup.com
It is still a matter of intense debate how supermassive black holes (SMBHs) grow and the
role played by feedback from active galactic nuclei (AGN) in the coevolution of SMBHs and …

Link between star formation and the properties of supermassive black holes

G Mountrichas, V Buat - Astronomy & Astrophysics, 2023 - aanda.org
It is well known that supermassive black holes (SMBHs) and their host galaxies undergo a
process of co-evolution. Feedback from active galactic nuclei (AGNs) plays an important role …

The relationship between the incidence of X-ray selected AGN in nearby galaxies & star-formation rate

KL Birchall, MG Watson, J Aird… - Monthly Notices of the …, 2023 - academic.oup.com
We present the identification and analysis of an X-ray selected AGN sample that lie within
the local (z< 0.35) galaxy population. From a parent sample of 22 079 MPA-JHU (based on …

Probing supermassive black hole growth and its dependence on stellar mass and star formation rate in low-redshift galaxies

O Torbaniuk, M Paolillo, R D'Abrusco… - Monthly Notices of …, 2024 - academic.oup.com
We present an improved study of the relation between supermassive black hole growth and
their host galaxy properties in the local Universe (z< 0.33). To this end, we build an …

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, B Darvish… - Astronomy & …, 2023 - aanda.org
In this work, we study the relation of the cosmic environment and morphology with the star
formation and stellar population of galaxies. Most importantly, we examine if this relation …

Comparison of star formation histories of AGN and non-AGN galaxies

G Mountrichas, V Buat, G Yang, M Boquien… - Astronomy & …, 2022 - aanda.org
We used active galactic nuclei (AGNs) with X-ray luminosities, LX, 2− 10 keV∼ 10 42.5− 44
erg s− 1, from the COSMOS-Legacy survey that lie within the UltraVISTA region and cross …

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, VA Masoura, A Corral… - Astronomy & …, 2024 - aanda.org
This study involves a comparative analysis of the star formation rates (SFRs) of active
galactic nucleus (AGN) galaxies and non-AGN galaxies and of the SFRs of type 1 and 2 …

The link among X-ray spectral properties, AGN structure, and the host galaxy

G Mountrichas, A Viitanen, FJ Carrera, H Stiele… - Astronomy & …, 2024 - aanda.org
In this work, we compare the supermassive black hole (SMBH) and host galaxy properties of
X-ray obscured and unobscured AGN. For that purpose, we used∼ 35 000 X-ray detected …

Active galactic nucleus X-ray luminosity function and absorption function in the Early Universe (3≤ z≤ 6)

E Pouliasis, A Ruiz, I Georgantopoulos, F Vito… - Astronomy & …, 2024 - aanda.org
The X-ray luminosity function (XLF) of active galactic nuclei (AGN) offers a robust tool to
study the evolution and the growth of the supermassive black-hole population over cosmic …