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119 papers · 1 filter
New BVRI photometry results on KBOs from the ESO VLT
P. Santos-Sanz, J. L. Ortiz, L. Barrera +1
Photometric surveys of transNeptunian objects (TNOs) and Centaurs have suggested possible correlations between some orbital parameters and surface colors of classical objects, scat…
Optimal filter systems for photometric redshift estimation
N. Benitez, M. Moles, J. A. L. Aguerri +18
In the next years, several cosmological surveys will rely on imaging data to estimate the redshift of galaxies, using traditional filter systems with 4-5 optical broad bands; narro…
Properties of the ionized gas in HH202. I: Results from integral field spectroscopy with PMAS
A. Mesa-Delgado, L. López-Martín, C. Esteban +2
We present results from integral field spectroscopy with the Potsdam multi-Aperture Spectrograph of the head of the Herbig-Haro object HH 202 with a spatial sampling of 1"x1". We h…
WINGS-SPE Spectroscopy in the WIde-field Nearby Galaxy-cluster Survey
A. Cava, D. Bettoni, B. M. Poggianti +11
Aims. We present the results from a comprehensive spectroscopic survey of the WINGS (WIde-field Nearby Galaxy-cluster Survey) clusters, a program called WINGS-SPE. The WINGS-SPE sa…
The June 2008 flare of Markarian 421 from optical to TeV energies
The Agile Collaboration, Webt Collaboration, Magic Collaboration +2
We present optical, X-ray, high energy ( GeV) and very high energy ( GeV; VHE) observations of the high-frequency peaked blazar Mrk 421 taken betwee…
The origin of the diffuse non-thermal X-ray and radio emission in the Ophiuchus cluster of galaxies
Miguel A. Perez-Torres, Fabio Zandanel, Martin A. Guerrero +4
We present high resolution 240 and 607 MHz GMRT radio observations, complemented with 74 MHz archival VLA radio observations of the Ophiuchus cluster of galaxies, whose radio mini-…