226 citations · 980 across the 25 of their papers we have counts for
25 papers
Bolometric correction for cosmologically redshifted stars with dust: an update to the YBC database
Yang Chen, Xiaoting Fu, Léo Girardi +2
Observations from HST & JWST continue to reveal gravitationally magnified high-redshift star candidates, resulting in increasing demand for accurate stellar bolometric corrections…
A homogeneous view of asymptotic giant branch carbon stars as seen by Gaia
Alessio Liberatori, Despina Hatzidimitriou, Konstantinos Antoniadis +12
Carbon stars on the asymptotic giant branch are major contributors to galactic dust enrichment, with gas mass-loss rates up to 1e-4 Msun/yr. We present a homogeneous spectral energ…
Enhanced Mass Loss of Very Massive Stars: Impact on the Evolution, Binary Processes, and Remnant Mass Spectrum
Kendall G. Shepherd, Guglielmo Costa, Cristiano Ugolini +7
Very massive stars (VMS) play a fundamental role in astrophysics due to their winds and supernovae (SN), and their role as massive black hole (BH) progenitors. However, their origi…
Discovery of a Weak CN Spectral Absorption Feature in Red Supergiant Stars in the Andromeda (M31) and Triangulum (M33) Galaxies
Puragra Guhathakurta, Douglas Grion Filho, Antara R. Bhattacharya +14
Using Keck DEIMOS spectra of stars in the Andromeda (M31) and Triangulum (M33) galaxies, selected from the large multi-band (near ultraviolet, visible light, and near infrared) Hub…
Strikingly high fraction of fast rotators in Magellanic Cloud star clusters
Greta Ettorre, Alessandro Mazzi, Leo Girardi +14
There has been growing evidence that the rich star clusters in the Magellanic Clouds contain significant fractions of rapidly rotating stars. In this work, we aim to constrain thes…
Calibration of the JAGB method for the Magellanic Clouds and Milky Way from Gaia DR3, considering the role of oxygen-rich AGB stars
Else Magnus, Martin Groenewegen, Leo Girardi +3
The JAGB method is a new way of measuring distances with use of AGB stars that are situated in a selected region in a J versus J-Ks CMD, using the fact that the absolute J magnitud…
The Local Ultraviolet to Infrared Treasury I. Survey Overview of the Broadband Imaging
Karoline M. Gilbert, Yumi Choi, Martha L. Boyer +21
The Local Ultraviolet to Infrared Treasury (LUVIT) is a Hubble Space Telescope program that combines newly acquired data in the near ultraviolet (NUV), optical, and near infrared (…
AESOPUS 2.1: Low-Temperature Opacities Extended to High Pressure
Paola Marigo, Francesco Addari, Diego Bossini +5
We address the critical need for accurate Rosseland mean gas opacities in high-pressure environments, spanning temperatures from 100 K to 32000 K. Current opacity tables from Wichi…
The JWST Resolved Stellar Populations Early Release Science Program V. DOLPHOT Stellar Photometry for NIRCam and NIRISS
Daniel R. Weisz, Andrew E. Dolphin, Alessandro Savino +38
We present NIRCam and NIRISS modules for DOLPHOT, a widely-used crowded field stellar photometry package. We describe details of the modules including pixel masking, astrometric al…
The JWST Resolved Stellar Populations Early Release Science Program VI. Identifying Evolved Stars in Nearby Galaxies
Martha L. Boyer, Giada Pastorelli, Léo Girardi +20
We present an investigation of evolved stars in the nearby star-forming galaxy WLM, using NIRCam imaging from the JWST resolved stellar populations early-release science (ERS) prog…
A Study of Primordial Very Massive Star Evolution. II. Stellar Rotation and Gamma-Ray Burst Progenitors
Guglielmo Volpato, Paola Marigo, Guglielmo Costa +4
We calculate new evolutionary models of rotating primordial very massive stars, with initial mass from to , for two values of the initial metallici…
AESOPUS 2.0: Low-Temperature Opacities with Solid Grains
P. Marigo, P. Woitke, E. Tognelli +3
In this study we compute the equation of state and Rosseland mean opacity from temperatures of T~30000 K down to T~400 K, pushing the capabilities of the AESOPUS code (Marigo et al…
The VMC Survey -- XXXVII. Pulsation periods of dust enshrouded AGB stars in the Magellanic Clouds
M. A. T. Groenewegen, A. Nanni, M. -R. L. Cioni +9
(abridged)Variability is a key property of stars on the asymptotic giant branch (AGB). Their pulsation period is related to the luminosity and mass-loss rate of the star. The long-…
The VMC Survey - XXXIII. The tip of the red giant branch in the Magellanic Clouds
M. A. T. Groenewegen, M. -R. L. Cioni, L. Girardi +6
In this paper JK_s data from the VISTA Magellanic Cloud (VMC) survey are used to investigate the tip of the red giant branch (TRGB) as a distance indicator. A linear fit to recent…
Connecting the evolution of thermally pulsing asymptotic giant branch stars to the chemistry in their circumstellar envelopes -- I. The case of hydrogen cyanide
Paola Marigo, Emanuele Ripamonti, Ambra Nanni +2
We investigate the formation of hydrogen cyanide (HCN) in the inner circumstellar envelopes of thermally pulsing asymptotic giant branch (TP-AGB) stars. A dynamic model for periodi…
The VMC ESO Public Survey
M. -R. L. Cioni, P. Anders, G. Bagheri +31
The VISTA near-infrared YJKs survey of the Magellanic Clouds system (VMC) has entered its core phase: about 40% of the observations across the Large and Small Magellanic Clouds (LM…
The VMC survey -IX. Pilot study of the proper motion of stellar populations in the LMC from 2MASS and VISTA data
M. -R. L. Cioni, L. Girardi, M. I. Moretti +9
We use multi-epoch near-infrared observations from the VISTA survey of the Magellanic Cloud system (VMC) to measure the proper motion of stars of the LMC, in one tile of 1.5 deg^2…
A near-infrared study of AGB and red giant stars in the Leo I dSph galaxy
E. V. Held, M. Gullieuszik, L. Rizzi +3
A near-infrared imaging study of the evolved stellar populations in the dwarf spheroidal galaxy Leo I is presented. Based on JHK observations obtained with the WFCAM wide-field arr…
Scaled solar tracks and isochrones in a large region of the Z-Y plane. II. From 2.5 to 20 solar masses
G. Bertelli, E. Nasi, L. Girardi +1
We extend our theoretical computations for low-mass stars to intermediate-mass and massive stars, for which few databases exist in the literature. Evolutionary tracks and isochrone…
Stellar populations in the Galactic bulge
E. Vanhollebeke, M. A. T. Groenewegen, L. Girardi
AIMS:The aim of this paper is to study the characteristics of the stellar populations and the metallicity distribution in the Galactic bulge. We study the entire stellar population…
On the Recovery of the Star Formation History of the LMC from the VISTA Survey of the Magellanic System
L. Kerber, L. Girardi, S. Rubele +1
The VISTA near infrared survey of the Magellanic System (VMC) will provide deep YJKs photometry reaching stars in the oldest turn-off point all over the Magellanic Clouds (MCs). As…
The Magellanic Clouds as a template for the study of stellar populations and galaxy interactions
M. -R. L. Cioni, K. Bekki, G. Clementini +18
The Magellanic System represents one of the best places to study the formation and evolution of galaxies. Photometric surveys of various depths, areas and wavelengths have had a si…
Population effects on the red giant clump absolute magnitude: The K-band
Maurizio Salaris, Leo Girardi
We present a detailed analysis of the behaviour of the Red Clump K-band absolute magnitude (M(K,RC)) in simple and composite stellar populations, in light of its use as standard ca…
Coupling emitted light and chemical yields from stars: a basic constraint to population synthesis models of galaxies
Paola Marigo, Leo Girardi
In this paper we emphasize the close connection between the chemical and spectrophotometric evolution of stellar systems: Chemical yields from stars correspond to a precise fractio…