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Aug 23, 2013

Physical parameters and the projection factor of the classical Cephei…

A novel method of analysis of double-lined eclipsing binaries containing a radially pulsating star is presented. The combined pulsating-eclipsing lig…
May 16, 2017

Slingshot Mechanism for Clusters: Gas Density Regulates Star Density …

We characterize the stellar and gas volume density, potential, and gravitational field profiles in the central $\sim$ 0.5 pc of the Orion Nebula Clus…
Sep 26, 2016

Near-Infrared Photometry of Globular Clusters Towards the Galactic …

We present wide field JHKs photometry of 16 Galactic globular clusters located towards the Galactic bulge, calibrated on the 2MASS photometric system…
Nov 08, 2011

The C+N+O abundance of Omega Centauri giant stars: implications on th…

We present a chemical-composition analysis of 77 red-giant stars in Omega Centauri. We have measured abundances for carbon and nitrogen, and combined…
Oct 30, 2018

Lyman $α$ Properties of Simulated Galaxies in Overdense Regions: Ef…

We perform Monte-Carlo radiative transfer calculations to model the Lyman $\alpha$ properties of galaxies in high-resolution, zoom-in cosmological si…
Oct 04, 2012

Spectroscopy of horizontal branch stars in Omega Centauri

We analyze the reddening, surface helium abundance and mass of 115 horizontal branch (HB) and blue hook (BH) stars in OmegaCentauri, spanning the HB …
May 23, 2008

The Araucaria Project: the Local Group Galaxy WLM--Distance and met…

The quantitative analysis of low resolution spectra of A and B supergiants is used to determine a distance modulus of 24.99 +/- 0.10 mag (995 +/- 46 …
Mar 04, 2008

Two Be stars in the Small Magellanic Cloud with B[e]-like properties

We present an analysis of UVES and MIKE (ground based) high resolution and Far Ultraviolet Spectroscopic Explorer spectra of two novel and photometri…
Dec 12, 2018

APOGEE [C/N] Abundances Across the Galaxy: Migration and Infall from …

We present [C/N]-[Fe/H] abundance trends from the SDSS-IV Apache Point Observatory Galactic Evolution Experiment (APOGEE) survey, Data Release 14 (DR…
Sep 18, 2009

The Variable Star Population of the Globular Cluster B514 in the An…

A rich harvest of RR Lyrae stars has been identified for the first time in B514, a metal-poor ([Fe/H] = 1.95 +/- 0.10 dex) globular cluster of the An…
Apr 13, 2018

A New Interpretation of the Mass-Temperature Relation and Mass Cali…

Observations and numerical simulations have shown that the relation between the mass scaled with the critical density of the universe and the X-ray t…
Apr 23, 2015

The chemical evolution of self-gravitating primordial disks

Numerical simulations show the formation of self-gravitating primordial disks during the assembly of the first structures in the Universe, in particu…
Apr 18, 2012

Kinematical and chemical vertical structure of the Galactic thick dis…

We estimated the dynamical surface mass density Sigma at the solar position between Z=1.5 and 4 kpc from the Galactic plane, as inferred from the kin…
Nov 30, 2016

The Surface Brightness--Color Relations Based on Eclipsing Binary Sta…

In this study we investigate the calibration of surface brightness--color (SBC) relations based solely on eclipsing binary stars. We selected a sampl…
Feb 03, 2015

Simple and accurate modelling of the gravitational potential produced…

We present accurate models of the gravitational potential produced by a radially exponential disk mass distribution. The models are produced by combi…
Jan 07, 2008

CCD photometric and mass function study of 9 young Large Magellanic …

We present CCD photometric and mass function study of 9 young Large Magellanic Cloud star clusters namely NGC 1767, NGC 1994, NGC 2002, NGC 2003, NGC…
Oct 09, 2013

New observational Constraints on the Growth of the First Supermassive…

We constrain the total accreted mass density in supermassive black holes at z>6, inferred via the upper limit derived from the integrated X-ray emiss…
Jul 12, 2017

APOGEE Chemical Abundances of the Sagittarius Dwarf Galaxy

The Apache Point Observatory Galactic Evolution Experiment (APOGEE) provides the opportunity to measure elemental abundances for C, N, O, Na, Mg, Al,…
Mar 14, 2019

Rotationally-driven VHE emission from the Vela pulsar

The recent detection of pulsed $\gamma$-ray emission from the Vela pulsar in the $\sim10$ to 100 GeV range by H.E.S.S. promises an important potentia…
Jun 22, 2018

We have studied the effect of the local environment on the colour of galaxies in two clusters at z∼0.4 drawn from the CLASH-VLT survey (Rosati et al., 2014). In these clusters, we have identified several substructures using a combination of statisti…

Galaxy pre-processing in substructures around z$\sim$0.4 galaxy clust…

We present a detailed analysis of galaxy colours in two galaxy clusters at \mbox{z $\sim$ 0.4}, \mbox{MACS J0416.1-2403} and \mbox{MACS J1206.2-0847}…
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