284 citations · 1.1k across the 27 of their papers we have counts for
27 papers
Compact groups of dwarf galaxies in TNG50: late hierarchical assembly and delayed stellar build-up in the low-mass regime
Rodrigo Flores-Freitas, Marina Trevisan, Maitê Mückler +3
Compact groups of dwarf galaxies (CGDs) have been observed at low redshifts () and are direct evidence of hierarchical assembly at low masses. To understand the formation of…
The Origin of Massive Compact Galaxies: Lessons from IllustrisTNG
F. S. Lohmann, A. Schnorr-Müller, M. Trevisan +2
We investigate the formation and evolution of z=0 massive compact galaxies (MCGs) in the IllustrisTNG cosmological simulation. We found that, as in observations, MCGs are mainly ol…
Digging deeper into NGC\,6868 I: stellar population
João P. V. Benedetti, Rogério Riffel, Tiago Ricci +8
We use Gemini integral field unit observations to map the stellar population properties in the inner region ( pc) of the galaxy NGC 6868. In order to understa…
The Puzzling Origin of Massive Compact Galaxies in MaNGA
A. Schnorr-Müller, M. Trevisan, R. Riffel +7
We characterized the kinematics, morphology, and stellar population (SP) properties of a sample of massive compact quiescent galaxies (MCGs, /$M_\odot \le…
The properties and environment of very young galaxies in the local Universe
M. Trevisan, G. A. Mamon, T. X. Thuan +3
In the local Universe, there is a handful of dwarf compact star-forming galaxies with extremely low oxygen abundances. It has been proposed that they are young, having formed a lar…
Globular Cluster Systems of Relic Galaxies
Karla A. Alamo-Martínez, Ana L. Chies-Santos, Michael A. Beasley +6
We analyse the globular cluster (GC) systems of a sample of 15 massive, compact early-type galaxies (ETGs), 13 of which have already been identified as good relic galaxy candidates…
Stellar Population Properties of ETGs in Compact Groups of Galaxies
Tatiana C. Moura, Reinaldo R. de Carvalho, Sandro B. Rembold +6
We present results on the study of the stellar population in Early-Type galaxies (ETGs) belonging to 151 Compact Groups (CGs). We also selected a field sample composed of 846 ETGs…
The frequency of very young galaxies in the local Universe: II. The view from SDSS spectra
Gary A. Mamon, Marina Trevisan, Trinh X. Thuan +2
Only a handful of galaxies in the local Universe appear to be very young. We estimate the fraction of very young galaxies (VYGs), defined as those with more than half their stellar…
Integrated Spectra of Milky Way Globular Cluster
Tatiana Coelho de Moura, Marina Trevisan, Beatriz Barbuy +1
Integrated spectra of Milky Way globular clusters (GCs) are reproduced by computing synthetic spectra taking into account individual element abundances. Five clusters were selected…
The Southern Photometric Local Universe Survey (S-PLUS): improved SEDs, morphologies and redshifts with 12 optical filters
C. Mendes de Oliveira, T. Ribeiro, W. Schoenell +142
The Southern Photometric Local Universe Survey (S-PLUS) is imaging ~9300 deg^2 of the celestial sphere in twelve optical bands using a dedicated 0.8 m robotic telescope, the T80-So…
Optical/NIR stellar absorption and emission-line indices from luminous infrared galaxies
Rogério Riffel, Alberto Rodríguez-Ardila, Michael S. Brotherton +11
We analyze a set of optical-to-near-infrared long-slit nuclear spectra of 16 infrared-luminous spiral galaxies. All of the studied sources present H emission, which reflects th…
Simulating Surveys for ELT-MOSAIC: Status of the MOSAIC Science Case after Phase A
M. Puech, C. J. Evans, K. Disseau +17
We present the consolidated scientific case for multi-object spectroscopy with the MOSAIC concept on the European ELT. The cases span the full range of ELT science and require eith…
Optical Substructure and BCG Offsets of Sunyaev-Zel'dovich and X-ray Selected Galaxy Clusters
P. A. A. Lopes, M. Trevisan, T. F. Laganá +3
We used optical imaging and spectroscopic data to derive substructure estimates for local Universe () galaxy clusters from two different samples. The first was selected t…
Group galaxy number density profiles far out: is the 'one-halo' term NFW out to virial radii?
Marina Trevisan, Gary A. Mamon, Diego H. Stalder
While the density profiles (DPs) of CDM haloes obey the NFW law out to roughly one virial radius, , the structure of their outer parts is still poorly understood, s…
A finer view of the conditional galaxy luminosity function and magnitude-gap statistics
Marina Trevisan, Gary A. Mamon
The gap between first and second ranked galaxy magnitudes in groups is often considered a tracer of their merger histories, which in turn may affect galaxy properties, and also ser…
Dynamical analysis of the cluster pair: A3407 + A3408
R. S. Nascimento, A. L. B. Ribeiro, M. Trevisan +3
We carried out a dynamical study of the galaxy cluster pair A3407 \& A3408 based on a spectroscopic survey obtained with the 4 meter Blanco telescope at the CTIO, plus 6dF data, an…
Do the stellar populations of the brightest two group galaxies depend on the magnitude gap?
M. Trevisan, G. A. Mamon, H. G. Khosroshahi
We investigate how the stellar populations of the inner regions of the first and the second brightest group galaxies (respectively BGGs and SBGGs) vary as a function of magnitude g…
Heavy elements in old very metal-rich stars
M. Trevisan, B. Barbuy
We studied a sample of high proper motion, old and metal-rich dwarf stars, selected from the NLTT catalogue. The low pericentric distances and eccentric orbits of these solar neigh…
High-resolution abundance analysis of red giants in the globular cluster NGC 6522
B. Barbuy, C. Chiappini, E. Cantelli +11
The [Sr/Ba] and [Y/Ba] scatter observed in some galactic halo stars that are very metal-poor stars and in a few individual stars of the oldest known Milky Way globular cluster NGC…
Deep Chandra Observations of HCG 16 - I. Active Nuclei, Star formation and Galactic Winds
E. O'Sullivan, A. Zezas, J. M. Vrtilek +6
We present new, deep Chandra X-ray and Giant Metrewave Radio Telescope 610~MHz observations of the spiral-galaxy-rich compact group HCG 16, which we use to examine nuclear activity…
SPIDER IX - Classifying Galaxy Groups according to their Velocity Distribution
A. L. B. Ribeiro, A. C. Schilling, R. R. de Carvalho +4
We introduce a new method to study the velocity distribution of galaxy systems, the Hellinger Distance (HD) - designed for detecting departures from a Gaussian velocity distributio…
SPIDER VIII - Constraints on the Stellar Initial Mass Function of Early-type Galaxies from a Variety of Spectral Features
F. La Barbera, I. Ferreras, A. Vazdekis +5
We perform a spectroscopic study to constrain the stellar Initial Mass Function (IMF) by using a large sample of 24,781 early-type galaxies from the SDSS-based SPIDER survey. Clear…
Analysis of old very metal rich stars in the solar neighbourhood
M. Trevisan, B. Barbuy, K. Eriksson +3
A sample of mostly old metal-rich dwarf and turn-off stars with high eccentricity and low maximum height above the Galactic plane has been identified. From their kinematics, it was…
Non-Gaussian velocity distributions - The effect on virial mass estimates of galaxy groups
Andre L. B. Ribeiro, Paulo A. A. Lopes, Marina Trevisan
We present a study of 9 galaxy groups with evidence for non-Gaussianity in their velocity distributions out to 4R200. This sample is taken from 57 groups selected from the 2PIGG ca…