Publications (6)
Stellar Models of Multiple Populations in Globular Clusters. I. The Main Sequence of NGC 6752
Aaron Dotter, Jason Ferguson, Charlie Conroy +3
We present stellar atmosphere and evolution models of main sequence stars in two stellar populations of the Galactic globular cluster NGC 6752. These populations represent the two…
A Constraint on Z_\odot from Fits of Isochrones to the Color-Magnitude Diagram of M67
Don A. VandenBerg, Bengt Gustafsson, Bengt Edvardsson +2
The mass at which a transition is made between stars that have radiative or convective cores throughout the core H-burning phase is a fairly sensitive function of Z (particularly t…
Photometric properties of stellar populations in Galactic globular clusters: the role of the Mg-Al anticorrelation
Santi Cassisi, Alessio Mucciarelli, Adriano Pietrinferni +2
We have computed low-mass stellar models and synthetic spectra for an initial chemical composition that includes the full C-N, O-Na, and Mg-Al abundance anticorrelations observed i…
From the CMD of Omega Centauri and (super-)AGB stellar models to a Galactic plane passage gas purging chemical evolution scenario
Falk Herwig, Don A. VandenBerg, Julio F. Navarro +2
[Abbreviated] We have investigated the color-magnitude diagram of Omega Centauri and find that the blue main sequence (bMS) can be reproduced only by models that have a of helium a…
Buried AGNs in Advanced Mergers:Mid-infrared color selection as a dual AGN finder
Shobita Satyapal, Nathan J. Secrest, Claudio Ricci +7
A direct consequence of hierarchical galaxy formation is the existence of dual supermassive black holes (SMBHs), which may be preferentially triggered as active galactic nuclei (AG…
The NextGen Model Atmosphere grid: II. Spherically symmetric model atmospheres for giant stars with effective temperatures between 3000 and 6800~K
Peter H. Hauschildt, France Allard, Jason Ferguson +2
We present the extension of our NextGen model atmosphere grid to the regime of giant stars. The input physics of the models presented here is nearly identical to the NextGen dwarf…