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Apr 11, 2007

The blue plume population in dwarf spheroidal galaxies: genuine blue …

Abridged... Blue stragglers (BSS) are thought to be the product of either primordial or collisional binary systems. In the context of dwarf spheroida…
Jun 30, 2008

Simulations of Galactic Cosmic Ray Impacts on the Herschel/PACS bol…

The effects of the in-flight behaviour of the bolometer arrays of the Herschel/PACS instrument under impacts of Galactic cosmic rays are explored. Th…
Oct 01, 2013

A disrupted bulgeless satellite galaxy as counterpart of the ultral…

The point-like X-ray source HLX-1, close to the S0 galaxy ESO 243-49, is one the strongest intermediate-mass black hole candidates, but the nature of…
Nov 03, 2015

Is beryllium ultra-depletion in solar-type stars linked to the presen…

Abundance studies of solar-type stars revealed a small fraction of objects with extreme depletion of beryllium. We investigate the possible link betw…
Nov 08, 2011

A comparison between star formation rate diagnostics and rate of core…

The core collapse supernova (CCSN) rate provides a strong lower limit for the star formation rate (SFR). Progress in using it as a cosmic SFR tracer …
Aug 18, 2017

The cosmic merger rate of stellar black hole binaries from the Illust…

The cosmic merger rate density of black hole binaries (BHBs) can give us an essential clue to constraining the formation channels of BHBs, in light o…
Jan 31, 2012

Multiple populations in globular clusters. Lessons learned from the …

Recent progress in studies of globular clusters has shown that they are not simple stellar populations, being rather made of multiple generations. Ev…
Apr 09, 2018

New disk discovered with VLT/SPHERE around the M star GSC 07396-00759

Debris disks are usually detected through the infrared excess over the photospheric level of their host star. The most favorable stars for disk detec…
Feb 18, 2014

Low redshift quasars in the SDSS Stripe 82. The host galaxies

We present a photometrical and morphological study of the properties of low redshift (z < 0.5) quasars based on a large and homogeneous dataset of ob…
Mar 06, 2014

WINGS Data Release: a database of galaxies in nearby clusters

[Abridged] To effectively investigate galaxy formation and evolution, it is of paramount importance to exploit homogeneous data for large samples of …
Jan 26, 2016

Synthetic photometry for M and K giants and stellar evolution: hydr…

Based on a grid of hydrostatic spherical COMARCS models for cool stars we have calculated observable properties of these objects, which will be mainl…
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…
Aug 09, 2012

Hubble Space Telescope reveals multiple Sub-Giant Branch in eight G…

In the last few years many globular clusters (GCs) have revealed complex color-magnitude diagrams, with the presence of multiple main sequences (MSs)…
Sep 19, 2011

The Na-O anticorrelation in horizontal branch stars. I. NGC 2808

Globular clusters have been recognized to host multiple stellar populations. A spectacular example of this is the massive cluster NGC2808, where mult…
Aug 19, 2017

Exoplanets: Possible Biosignatures

The ancestor philosophers' dream of thousands of new worlds is finally realised: about 3500 extrasolar planets have been discovered in the neighborho…
Aug 13, 2009

The fast declining Type Ia supernova 2003gs, and evidence for a sig…

We obtained optical photometry of SN 2003gs on 49 nights, from 2 to 494 days after T(B_max). We also obtained near-IR photometry on 21 nights. SN 200…
Feb 18, 2010

The evolution of the density of galaxy clusters and groups: denser …

We show that, observationally, the projected local density distribution in high-z clusters is shifted towards higher values compared to clusters at l…
Sep 25, 2017

First optical validation of a Schwarzschild Couder telescope: the AST…

The Cherenkov Telescope Array (CTA) represents the most advanced facility designed for Cherenkov Astronomy. ASTRI SST-2M has been developed as a demo…
Oct 15, 2014

Extended Main Sequence Turnoffs in Intermediate-Age Star Clusters: A …

We present color-magnitude diagram analysis of deep Hubble Space Telescope imaging of a mass-limited sample of 18 intermediate-age (1 - 2 Gyr old) st…
Sep 04, 2018

High-Contrast study of the candidate planets and protoplanetary disk …

The nearby Herbig Be star HD100546 is known to be a laboratory for the study of protoplanets and their relation with the circumstellar disk that is c…
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