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102 papers · 1 filter
A census of young stellar populations in the warm ULIRG PKS1345+12
J. Rodriguez Zaurin, J. Holt, C. N. Tadhunter +1
We present a detailed investigation of the young stellar populations(YSP) in the radio-loud ultra luminous infrared galaxy (ULIRG) PKS1345+12, based on high resolution HST imaging…
Extensive multiband study of the X-ray rich GRB 050408. A likely off-axis event with an intense energy injection
A de Ugarte Postigo, T. A. Fatkhullin, G. Johannesson +40
Aims. Understand the shape and implications of the multiband light curve of GRB 050408, an X-ray rich (XRR) burst. Methods. We present a multiband optical light curve, covering the…
Star formation rates and stellar masses in z ~ 1 gamma ray burst hosts
J. M. Castro Cerón, M. J. Michałowski, J. Hjorth +3
We analyse 4.5, 8 and 24 um band Spitzer images of six gamma ray burst host galaxies at redshifts close to 1. We constrain their star formation rates (SFR) based on the entire avai…
Physical Orbit for Lambda Virginis and a Test of Stellar Evolution Models
M. Zhao, J. D. Monnier, G. Torres +12
Lambda Virginis (LamVir) is a well-known double-lined spectroscopic Am binary with the interesting property that both stars are very similar in abundance but one is sharp-lined and…
Determination of the light curve of the Rosetta target Asteroid (2867) Steins by the OSIRIS cameras onboard Rosetta
M. Kueppers, S. Mottola, S. C. Lowry +9
Context: In 2004 asteroid (2867) Steins has been selected as a flyby target for the Rosetta mission. Determination of its spin period and the orientation of its rotation axis are e…
UV dust attenuation in spiral galaxies: the role of age-dependent extinction and of the IMF
P. Panuzzo, G. L. Granato, V. Buat +4
We analyse the attenuation properties of a sample of UV selected galaxies, with the use of the spectrophotometric model Grasil. In particular, we focus on the relation between dust…