Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR3.5k papers
- National Institute for AstrophysicsIT1.8k papers
- Max Planck Institute for AstronomyDE1.8k papers
- Max Planck Institute for Extraterrestrial PhysicsDE1.5k papers
- California Institute of TechnologyUS1.5k papers
- Space Telescope Science InstituteUS1.5k papers
- Leiden UniversityNL1.4k papers
- Center for Astrophysics Harvard & SmithsonianUS1.3k papers
- Osservatorio Astronomico di PadovaIT1.3k papers
- University of CambridgeGB1.2k papers
- Observatoire de ParisFR1.2k papers
- Instituto de Astrofísica de CanariasES1.2k papers
277 papers · 1 filter
A Chandra observation of the X-ray environment and jet of 3C296
M. J. Hardcastle, D. M. Worrall, M. Birkinshaw +2
We have observed the twin-jet radio galaxy 3C296 with Chandra. X-ray emission is detected from the nucleus, from the inner parts of the radio jet, and from a small-scale thermal en…
An Improved Estimate of the Mass of Dust in Cassiopeia A
T. L. Wilson, W. Batrla
Recent observations of sub-millimeter continuum emission toward supernova remnants (SNR) have raised the question of whether such emission is caused by dust within the SNR and thus…
Evidence for a hot dust-free inner disk around 51 Oph
W. -F. Thi, B. van Dalen, A. Bik +1
We report on the observation of CO bandhead emission around 51 Oph (dv=2). A high resolving power (R~10,000) spectrum was obtained with the infrared spectrometer ISAAC mounted on V…
Young Massive Clusters in Non-Interacting Galaxies
S. S. Larsen, J. P. Brodie, D. A. Hunter +1
Young star clusters with masses well in excess of 100.000 Msun have been observed not only in merger galaxies and large-scale starbursts, but also in fairly normal, undisturbed spi…
VLT adaptive optics imaging of QSO host galaxies and close environment at z ~2.5: results from a pilot program
R. Falomo, J. K. Kotilainen, R. Scarpa +1
We report ESO-VLT near-infrared adaptive optics imaging of one radio-loud (PKS 0113-283) and two radio-quiet (Q 0045-3337 and Q 0101-337) QSOs at z > 2. In the first case, we are a…
Properties of Ly-alpha and Gamma Ray Burst selected starbursts at high redshifts
J. P. U. Fynbo, B. Krog, K. Nilsson +6
Selection of starbursts through either deep narrow band imaging of redshifted Ly-alpha emitters, or localisation of host galaxies of gamma-ray bursts both give access to starburst…
The Luminosity Functions of the Galaxy Cluster MS1054-0321 at z=0.83 based on ACS Photometry
Tomotsugu Goto, Marc Postman, Nicholas J. G. Cross +41
We present new measurements of the galaxy luminosity function (LF) and its dependence on local galaxy density, color, morphology, and clustocentric radius for the massive z=0.83 cl…
Identification of a complete sample of northern ROSAT All-Sky Survey X-ray sources. VIII. The late-type stellar component
F. -J. Zickgraf, J. Krautter, S. Reffert +4
We present results of an investigation of the X-ray properties, age distribution, and kinematical characteristics of a high-galactic latitude sample of late-type field stars select…
Star formation in RCW 108: triggered or spontaneous?
F. Comeron, N. Schneider, D. Russeil
We present visible, near IR, and mm-wave observations of RCW 108, a molecular cloud complex in the AraOB1 association that is being eroded by the energetic radiation of two O-type…
UVES observations of the Canis Major overdensity
L. Sbordone, P. Bonifacio, G. Marconi +2
We present the first detailed chemical abundances for three giant stars which are candidate members of the Canis Major overdensity, obtained by using FLAMES-UVES at VLT. The stars,…
Stars in the Hubble Ultra Deep Field
N. Pirzkal, K. C. Sahu, A. Burgasser +11
We identified 46 unresolved source candidates in the Hubble Ultra Deep Field, down to i775 = 29.5. Unresolved objects were identified using a parameter S, which measures the deviat…
The Transformation of Cluster Galaxies at Intermeidate Redshift
N. L. Homeier, R. Demarco, P. Rosati +17
We combine imaging data from the Advanced Camera for Surveys (ACS) with VLT/FORS optical spectroscopy to study the properties of star-forming galaxies in the z=0.837 cluster CL0152…
The Star Cluster population of NGC 5253
G. Cresci, L. Vanzi, M. Sauvage
We present a detailed analysis of the star cluster population in the starburst galaxy NGC 5253. Our work is based on HST optical and VLT Ks images. We detect more than 300 clusters…
Metallicities on the Double Main Sequence of omega Centauri Imply Large Helium Enhancement
Giampaolo Piotto, Sandro Villanova, Luigi R. Bedin +10
Having shown in a recent paper that the main sequence of omega Centauri is split into two distinct branches, we now present spectroscopic results showing that the bluer sequence is…
L- and M-band imaging observations of the Galactic Center region
T. Viehmann, A. Eckart, R. Schoedel +3
We present near-infrared H-, K-, L- and M-band photometry of the Galactic Center from images obtained at the ESO VLT in May and August 2002, using the NAOS/CONICA (H and K) and the…
The Wide Field Imager Lyman-Alpha Search (WFILAS) for Galaxies at Redshift ~5.7: I. A Spatially Compact Lyman-alpha Emitting Galaxy at Redshift 5.721
Eduard Westra, D. Heath Jones, Chris E. Lidman +6
We report the spectroscopic confirmation of a compact \lya emitting galaxy at . A FORS2 spectrum of the source shows a strong asymmetric line with a flux of 5$\times10^{-1…
The evolution of the galaxy B-band rest-frame morphology to z~2: new clues from the K20/GOODS sample
P. Cassata, A. Cimatti, A. Franceschini +7
We present a detailed analysis of the evolution of the rest-frame B-band morphology of K-selected galaxies with 0 < z < 2.5. This work is based on the K20 spectroscopic sample (Ks<…
Detection of Two Massive CO Systems in 4C 41.17 at z = 3.8
Carlos De Breuck, Dennis Downes, Roberto Neri +4
We have detected CO(4-3) in the z=3.8 radio galaxy 4C 41.17 with the IRAM Interferometer. The CO is in two massive (M_dyn ~ 6 x 10^10 M_Sun) systems separated by 1.8" (13 kpc), and…
The influence of chemical composition on the properties of Cepheid stars I - Period-Luminosity relation vs iron abundance
M. Romaniello, F. Primas, M. Mottini +3
We have assessed the influence of the stellar iron content on the Cepheid Period-Luminosity (PL) relation by relating the V band residuals from the Freedman et al (2001) PL relatio…
The RASS-SDSS Galaxy Cluster Survey. III. Scaling relations of galaxy clusters
P. Popesso, A. Biviano, H. Bhoeringer +2
We use the RASS-SDSS galaxy cluster sample to compare the quality of optical and X-ray luminosities as predictors of other cluster properties such as their masses, temperatures, an…
A VLT spectroscopic survey of RX J0152.7-1357, a forming cluster of galaxies at z=0.837
R. Demarco, P. Rosati, C. Lidman +12
We present the results of an extensive spectroscopic survey of RX J0152.7-1357, one of the most massive distant clusters of galaxies known. Multi-object spectroscopy, carried out w…
Chandra HRC Localization of the Low Mass X-ray Binaries X1624-490 and X1702-429: The Infrared Counterparts
S. Wachter, J. W. Wellhouse, S. K. Patel +3
We report on the precise localization of the low mass X-ray binaries X1624-490 and X1702-429 with the Chandra HRC-I. We determine the best positions to be 16:28:02.825 -49:11:54.61…
Spectroscopy of High-Redshift Supernovae from the ESSENCE Project: The First Two Years
T. Matheson, S. Blondin, R. J. Foley +28
We present the results of spectroscopic observations of targets discovered during the first two years of the ESSENCE project. The goal of ESSENCE is to use a sample of ~200 Type Ia…
PAH emission variations within the resolved starbursts of NGC253 and NGC1808
L. E. Tacconi-Garman, E. Sturm, M. Lehnert +3
(ABRIDGED) We have undertaken a programme of 3 micron narrowband imaging of a sample of nearby template galaxies covering a wide range of metallicity, star formation activity, and…