0000000000668607

AUTHOR

F. La Barbera

showing 3 related works from this author

SPIDER VIII - Constraints on the Stellar Initial Mass Function of Early-type Galaxies from a Variety of Spectral Features

2013

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 evidence is found of a trend between IMF and central velocity dispersion, sigma0, evolving from a standard Kroupa/Chabrier IMF at 100km/s towards a more bottom-heavy IMF with increasing sigma0, becoming steeper than the Salpeter function at sigma0>220km/s. We analyze a variety of spectral indices, corrected to solar scale by means of semi-empirical correlations, and fitted simultaneously with extended MILES (MIUSCAT) stellar population models. Our analysis suggests that sigma0, rather than [alpha/Fe], drives t…

PhysicsCosmology and Nongalactic Astrophysics (astro-ph.CO)Initial mass functionStellar populationmedia_common.quotation_subjectFOS: Physical sciencesVelocity dispersionAstronomy and AstrophysicsAstrophysicsSpectral lineGalaxyStarsSpace and Planetary ScienceSkyGlobular clustermedia_commonAstrophysics - Cosmology and Nongalactic Astrophysics
researchProduct

Evolutionary stellar population synthesis with MILES – II. Scaled-solar and α-enhanced models

2015

This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2015 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved

PhysicsGalaxies: abundancesGlobular clusters: generalLibrary scienceAstronomyabundances [Galaxies]FísicaAstronomy and AstrophysicsGalaxies: stellar contentAstrophysics - Astrophysics of Galaxieselliptical and lenticularcD [Galaxies]Space and Planetary ScienceGalaxies: elliptical and lenticularcDChristian ministrystellar content [Galaxies]general [Globular clusters]ABUNDÂNCIAS (ASTRONOMIA)
researchProduct

The role of research nurse in translational studies: LUCAS experience

2015

medicine.medical_specialtyOncologyNursingbusiness.industryAlternative medicineMedicineHematologybusinessAnnals of Oncology
researchProduct