35 citations · 141 across the 8 of their papers we have counts for
8 papers
GALEX UV survey of magnetic chemically peculiar stars in the Kepler prime field
Emanuele Bertone, Stefan Hümmerich, Miguel Chávez +8
Magnetic chemically peculiar (mCP) stars are strongly magnetic upper main-sequence stars that exhibit light rotational variability due to an uneven surface distribution of certain…
Do instabilities in high-multiplicity systems explain the existence of close-in white dwarf planets?
R. F. Maldonado, E. Villaver, A. J. Mustill +2
We investigate the origin of close-in planets and related phenomena orbiting white dwarfs (WDs), which are thought to originate from orbits more distant from the star. We use the p…
Understanding the origin of white dwarf atmospheric pollution by dynamical simulations based on detected three-planet systems
R. F. Maldonado, E. Villaver, A. J. Mustill +2
Between 25-50 % of white dwarfs (WD) present atmospheric pollution by metals, mainly by rocky material, which has been detected as gas/dust discs, or in the form of photometric tra…
Dynamical evolution of two-planet systems and its connection with white dwarf atmospheric pollution
R. F. Maldonado, E. Villaver, A. J. Mustill +2
Asteroid material is detected in white dwarfs (WDs) as atmospheric pollution by metals, in the form of gas/dust discs, or in photometric transits. Within the current paradigm, mino…
Supersolar metallicity in G0-G3 main sequence stars with V<15
R. López-Valdivia, E. Bertone, M. Chávez +4
The basic stellar atmospheric parameters (effective temperature, surface gravity and global metallicity) were simultaneously determined for a sample of 233 stars, limited in magnit…
Snapshot metallicity estimate of resolved stellar systems through Lick Fe5270 diagnostic
Alberto Buzzoni, Emanuele Bertone, Miguel Chavez
We outline a new method to derive a "snapshot" metallicity estimate of stellar systems (providing one resolves at least the brightest part of the CMD) just on the basis of low-reso…
Mid-UV Narrow-Band Indices of Evolved Simple Stellar Populations
Miguel Chavez, Emanuele Bertone, Javier Morales-Hernandez +1
We explore the properties of selected mid-ultraviolet (1900-3200 angstrom) spectroscopic indices of simple stellar populations (SSPs). We incorporate the high resolution UVBLUE ste…
Zero metallicity stellar sources and the reionization epoch
P. Cojazzi, A. Bressan, F. Lucchin +2
We reconsider the problem of the cosmological reionization due to stellar sources. Using a method similar to that developed by Haiman & Loeb (1997), we investigate the effect of ch…