96 citations · 459 across the 12 of their papers we have counts for
10 papers · 1 filter
Tracing out the northern stream of the Sagittarius dwarf galaxy with color- magnitude diagram techniques
D. Martinez-Delgado, M. A. Gomez-Flechoso, A. Aparicio
Standard cosmology predicts that dwarfs were the first galaxies to be formed in the Universe and that many of them merge afterwards to form bigger galaxies such as the Milky Way. T…
Searching for Tidal Tails in Galactic Dwarf Spheroidal Satellites
D. Martinez-Delgado, A. Aparicio, M. A. Gomez-Flechoso
We present preliminary results of a long-term project to investigate the process of accretion and tidal disruption of dSph satellites in the Galactic halo and, in particular, to se…
An Early-Time Infrared and Optical Study of the Type Ia Supernova 1998bu in M96
M. Hernandez, W. P. S. Meikle, A. Aparicio +22
We present first-season infrared (IR) and optical photometry and spectroscopy of the Type Ia Supernova 1998bu in M96. We also report optical polarimetry of this event. SN1998bu is…
Photometric catalog of nearby globular clusters (II)
A. Rosenberg, A. Aparicio, I. Saviane +1
In this paper we present the second and final part of a large and photometrically homogeneous CCD color-magnitude diagram (CMD) data base, comprising 52 nearby Galactic globular cl…
Photometric catalog of nearby globular clusters (I)
A. Rosenberg, G. Piotto, I. Saviane +1
We present the first part of the first large and homogeneous CCD color-magnitude diagram (CMD) data base, comprising 52 nearby Galactic globular clusters (GGC) imaged in the V and…
The spatial and age distribution of stellar populations in DDO 190
A. Aparicio, N. Tikhonov
The spatial distribution of stellar populations, the star formation history, and other properties of the dIrr galaxy DDO 190 have been analyzed using color--magnitude diagrams (CMD…
The stellar content of the Local Group dwarf galaxy Phoenix
D. Martinez-Delgado, C. Gallart, A. Aparicio
We present new deep ground-based photometry of the Local Group dwarf galaxy Phoenix. Our results confirm that this galaxy is mainly dominated by red stars, with some blue plum…
Model color-magnitude diagrams for Hubble Space Telescope observations of Local Group dwarf galaxies
A. Aparicio, C. Gallart, C. Chiosi +1
In this paper, we discuss a method to conduct a quantitative study of the star formation history (SFH) of Local Group (LG) galaxies using (HST) data. This method has proven to be s…
The Star Formation History of the Pegasus Dwarf Irregular Galaxy
A. Aparicio, C. Gallart, G. Bertelli
The star formation history (SFH) of the Pegasus dIr, a likely Local Group member at 0.95 Mpc from the Milky Way, is investigated. We characterize the SFH by two basic functions: th…
Bright Stars and Recent Star Formation in the Irregular Magellanic Galaxy NGC2366
A. Aparicio, J. Cepa, C. Gallart +17
The stellar content of the Im galaxy NGC 2366 is discussed on the basis of CCD BVR photometry. The three brightest blue and red stars have been used to estimate its distance, obtai…