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111 papers · 1 filter
CCS and NH3 emission associated with low-mass young stellar objects
I. de Gregorio-Monsalvo, J. F. Gomez, O. Suarez +3
In this work we present a sensitive and systematic single-dish survey of CCS emission (complemented with ammonia observations) at 1 cm, toward a sample of low- and intermediate-mas…
Integral Field Spectroscopy of the core of Abell 2218
S. F. Sanchez, N. Cardiel, M. Verheijen +1
We report on integral field spectrocopy observations, performed with the PPAK module of the PMAS spectrograph, covering a field-of-view of ~74''X64'' centered on the core of the ga…
Modeling Tidal Streams in evolving dark matter halos
Jorge Penarrubia, Andrew J. Benson, David Martinez-Delgado +1
We explore whether stellar tidal streams can provide information on the secular, cosmological evolution of the Milky Way's gravitational potential and on the presence of subhalos.…
Mass distribution in nearby Abell clusters
Ewa L. Lokas, Radoslaw Wojtak, Stefan Gottloeber +2
We study the mass distribution in six nearby (z<0.06) relaxed Abell clusters of galaxies A0262, A0496, A1060, A2199, A3158 and A3558. Given the dominance of dark matter in galaxy c…
A multisite photometric campaign on the Pre-Main-Sequence delta Scuti pulsator IP Per
V. Ripepi, S. Bernabei, M. Marconi +18
We present the results of a photometric multisite campaign on the Scuti Pre-Main-Sequence star IP Per. Nine telescopes have been involved in the observations, with a total of a…
On the properties of fractal cloud complexes
Nestor Sanchez, Emilio J. Alfaro, Enrique Perez
We study the physical properties derived from interstellar cloud complexes having a fractal structure. We first generate fractal clouds with a given fractal dimension and associate…