248 citations · 1.2k across the 23 of their papers we have counts for
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Evidence for metallicity spreads in three massive M31 globular clusters
Isaura Fuentes-Carrera, Pascale Jablonka, Ata Sarajedini +3
We quantify the intrinsic width of the red giant branches of three massive globular clusters in M31 in a search for metallicity spreads within these objects. We present HST/ACS obs…
Determination of the basic parameters of the dwarf nova EY Cygni
J. Echevarria, R. Michel, R. Costero +1
High-dispersion spectroscopy of EY Cyg obtained from data spanning twelve years show, for the first time, the radial velocity curves from both emission and absorption line systems,…
Are GRB 980425 and GRB 031203 real outliers or twins of GRB 060218?
G. Ghisellini, G. Ghirlanda, S. Mereghetti +3
GRB 980425 and GRB 031203 are apparently two outliers with respect to the correlation between the isotropic equivalent energy E_iso emitted in the prompt radiation phase and the pe…
HD 172189: An eclipsing and spectroscopic binary with a Delta Sct-ttype pulsating component in an open cluster
S. Martin-Ruiz, P. J. Amado, J. C. suarez +4
We present a study based on more than 2500 uvby-measurements collected on HD 172189, a new eclipsing binary system with a Delta Sct-type pulsating component that belongs to the ope…
Time variations of the narrow FeII and HI spectral emission lines from the close vicinity of Eta Carinae during the spectral event of 2003
H. Hartman, A. Damineli, S. Johansson +1
The spectrum of Eta Carinae and its ejecta shows slow variations over a period of 5.5 years. However, the spectrum changes drastically on a time scale of days once every period cal…
Molecular Hydrogen and [FeII] in Active Galactic Nuclei
Alberto Rodriguez-Ardila, Miriani G. Pastoriza, Sueli Viegas +2
(Abridge) Near-infrared spectroscopy is used to study the kinematics and excitation mechanisms of the H2 and [FeII] gas in a sample of AGN. The H2 lines are unresolved in all objec…