Publications (15)
Hints on the gradual re-sizing of the torus in AGN by decomposing IRS/Spitzer spectra
O. González-MartÃn, J. Masegosa, A. Hernán-Caballero +12
Several authors have claimed that the less luminous active galactic nuclei (AGN) are not capable of sustaining the dusty torus structure. Thus, a gradual re-sizing of the torus is…
The Two Dimensional Projected Spatial Distribution of Globular Clusters: Method and Application to NGC4261
R. D'Abrusco, G. Fabbiano, J. Strader +7
We present a new method for the determination of the two-dimensional (2D) projected spatial distribution of globular clusters (GCs) in external galaxies. This method is based on th…
A novel method to automatically detect and measure the ages of star clusters in nearby galaxies: Application to the Large Magellanic Cloud
T. Bitsakis, P. Bonfini, R. A. Gonzalez-Lopezlira +5
We present our new, fully-automated method to detect and measure the ages of star clusters in nearby galaxies, where individual stars can be resolved. The method relies purely on s…
A machine-learning photometric classifier for massive stars in nearby galaxies II. The catalog
G. Maravelias, A. Z. Bonanos, K. Antoniadis +8
Mass loss is a key aspect of stellar evolution, particularly in evolved massive stars, yet episodic mass loss remains poorly understood. To investigate this, we need evolved massiv…
An automated activity classification tool for optical galaxy spectra
C. Daoutis, A. Zezas, E. Kyritsis +2
Reliable, versatile galaxy activity diagnostics are essential for understanding galaxy evolution. Traditional methods frequently necessitate extensive preprocessing, such as starli…
Connecting traces of galaxy evolution: the missing core mass -- morphological fine structure relation
P. Bonfini, T. Bitsakis, A. Zezas +5
Deep exposure imaging of early-type galaxies (ETGs) are revealing the second-order complexity of these objects, which have been long considered uniform, dispersion-supported sphero…
Studying the asymmetry of the GC population of NGC 4261
P. Bonfini, A. Zezas, M. Birkinshaw +5
We present an analysis of the Globular Cluster (GC) population of the elliptical galaxy NGC 4261 based on HST WFPC2 data in the B, V and I bands. We study the spatial distribution…
GALFIT-CORSAIR: implementing the core-Sersic model into GALFIT
P. Bonfini
We introduce GALFIT-CORSAIR: a publicly available, fully retro-compatible modification of the 2D fitting software GALFIT (v.3) which adds an implementation of the core-Sersic model…
The Star Formation Reference Survey. I. Survey Description and Basic Data
M. L. N. Ashby, S. Mahajan, H. A. Smith +17
Star formation is arguably the most important physical process in the cosmos. It is a fundamental driver of galaxy evolution and the ultimate source of most of the energy emitted b…
A new automated tool for the spectral classification of OB stars
E. Kyritsis, G. Maravelias, A. Zezas +3
(abridged) We develop a tool for the automated spectral classification of OB stars according to their sub-types. We use the regular Random Forest (RF) algorithm, the Probabilistic…
Modelling dust rings in early-type galaxies through a sequence of radiative transfer simulations and 2D image fitting
P. Bonfini, O. Gonzalez-Martin, J. Fritz +3
A large fraction of early-type galaxies (ETGs) host prominent dust features, and central dust rings are arguably the most interesting among them. We present here `Lord Of The Rings…
The integrated properties of the CALIFA galaxies: Model-derived galaxy parameters and quenching of star formation
T. Bitsakis, S. F. Sanchez, L. Ciesla +6
We present a study of the integrated properties of the 835 galaxies in the CALIFA survey. To derive the main physical parameters of the galaxies we have fitted their UV-to-IR spect…
Star-forming Clumps in Local Luminous Infrared Galaxies
K. L. Larson, T. DÃaz-Santos, L. Armus +15
We present narrow-band near-infrared imaging of Pa and Pa emission of 48 local Luminous Infrared Galaxies (LIRGs) from the Great Observatories All-Sky LIRG Survey (GO…
From seagull to hummingbird: New diagnostic methods for resolving galaxy activity
C. Daoutis, A. Zezas, E. Kyritsis +2
Context. A major challenge in astrophysics is classifying galaxies by their activity. Current methods often require multiple diagnostics to capture the full range of galactic activ…
The distribution and ages of star clusters in the Small Magellanic Cloud: Constraints on the interaction history of the Magellanic Clouds
T. Bitsakis, R. A. Gonzalez-Lopezlira, P. Bonfini +5
We present a new study of the spatial distribution and ages of the star clusters in the Small Magellanic Cloud (SMC). To detect and estimate the ages of the star clusters we rely o…