Institution
European Southern Observatory
Facility•Garching bei München, Germany•
About: European Southern Observatory is a facility organization based out in Garching bei München, Germany. It is known for research contribution in the topics: Galaxy & Stars. The organization has 3594 authors who have published 16157 publications receiving 823095 citations. The organization is also known as: The European Southern Observatory,ESO & ESO.
Topics: Galaxy, Stars, Star formation, Redshift, Population
Papers published on a yearly basis
Papers
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University of Bologna1, University of Barcelona2, Spanish National Research Council3, Pennsylvania State University4, Max Planck Society5, University of Maryland, Baltimore County6, Harvard University7, European Southern Observatory8, University of Naples Federico II9, University of Tokyo10, Pontifical Catholic University of Chile11
TL;DR: In this paper, the authors present the first results of the spectroscopy of distant, obscured AGN as obtained with the ultra-deep (3.3m) XMM-Newton survey in the Chandra Deep Field South (CDF‐S).
Abstract: We present the first results of the spectroscopy of distant, o bscured AGN as obtained with the ultra‐deep (�3.3 Ms) XMM‐Newton survey in the Chandra Deep Field South (CDF‐S). One of the primary goals of the project is to characterize the X‐ray spectral properties of obscured and heavily obscured Compton‐thick AGN over the range of redhifts and luminosities that are relevant in terms of their contribution to the X‐ray background. The ultra‐deep exposure, coupled with the XMM detector’s spectral throughput, allowed us to accumulate good quality X‐ray spectra for a large number of X‐ray sources and, in particular, for heavily obscured AGN at cosmological redshifts. Specifically we present the X ‐ray spectral properties of two high‐redshift ‐ z= 1.53 and z=3.70 ‐
184 citations
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Heidelberg University1, Max Planck Society2, Liverpool John Moores University3, Australian National University4, University of Toulouse5, Hoffmann-La Roche6, Ohio State University7, Ghent University8, University of Paris9, European Southern Observatory10, University of Chile11, University of Alberta12, University of Bonn13, Carnegie Institution for Science14, École normale supérieure de Lyon15, California Institute of Technology16, ASTRON17
TL;DR: German Research Foundation (DFG) and the European Research Council (ERC) as mentioned in this paper proposed a joint research cooperation scheme with the French National Cosmology et Galaxies (PNCG) of the Centre national de la recherche scientifique/Institut national de physique nucleaire et de physique des particules (IN2P3) of France.
Abstract: German Research Foundation (DFG)
KR4801/1-1
German Research Foundation (DFG)
KR4801/2-1
European Research Council (ERC)
714907
Australia-Germany Joint Research Cooperation Scheme (UA-DAAD)
57387355
Australian Research Council
FT140101202
Programme National 'Physique et Chimie du Milieu Interstellaire' (PCMI) of the Centre national de la recherche scientifique/Institut national des sciences de l'Univers (CNRS/INSU)
Institut de Chimie/Institut de Physique (INC/INP)
French Atomic Energy Commission
Centre National D'etudes Spatiales
Programme National Cosmology et Galaxies (PNCG) of CNRS/INSU
INP
Institut national de physique nucleaire et de physique des particules (IN2P3)
French Atomic Energy Commission
Centre National D'etudes Spatiales
European Research Council (ERC)
694343
726384
National Science Foundation (NSF)
1615105
1615109
1653300
National Aeronautics and Space Administration (NASA) Astrophysics Data Analysis Program (ADAP)
NNX16AF48G
NNX17AF39G
Natural Sciences and Engineering Research Council of Canada
RGPIN-2017-03987
Fondo de Fomento al Desarrollo Cientifico y Tecnologico of the Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT/FONDECYT), Programa de Iniciacion, Folio
11150220
German Research Foundation (DFG)
SFB 881
Germany's Excellence Strategy (Heidelberg STRUCTURES Excellence Cluster)
EXC-2181/1-390900948
German Research Foundation (DFG)
KR4598/2-1
MINECO/FEDER
AYA2016-79006-P
MCIU/AEI/FEDER
PGC2018-094671-B-I00
Centre National de la Recherche Scientifique (CNRS)
Max Planck Society
IGN (Spain)
184 citations
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TL;DR: In this paper, a near-infrared extinction map of a large region in the sky (∼3500 deg 2 ) in the general directions of Taurus, Perseus, and Aries is presented.
Abstract: We present a near-infrared extinction map of a large region in the sky (∼3500 deg 2 ) in the general directions of Taurus, Perseus, and Aries. The map has been obtained using robust and optimal methods to map dust column density at near-infrared wavelengths (Nicer, described in Lombardi & Alves 2001, AA we name this region the Perseus-Andromeda hole. We find that over the region that encompasses the Taurus, Perseus, and California clouds the column density measurements below AK < 0.2 mag are perfectly described by a log-normal distribution, and that a significant deviation is observed at larger extinction values. If turbulence models are invoked to justify the log-normal distribution, the observed departure could be interpreted as the result of the effect of gravity that acts on the cores of the clouds. Finally, we investigate the cloud structure function, and show that significant deviations from the results predicted by turbulent models are observed in at least one cloud.
184 citations
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TL;DR: In this article, the authors conducted an adaptive optics survey of a sample of 58 PMS wide binaries from various star-forming regions, which include 52 T Tauri systems with mostly K-and M-type primaries, with the NIR instrument NACO at the VLT.
Abstract: Aims. This paper describes a systematic search for high-order multiplicity among wide visual Pre-Main Sequence (PMS) binaries. Methods. We conducted an Adaptive Optics survey of a sample of 58 PMS wide binaries from various star-forming regions, which include 52 T Tauri systems with mostly K- and M-type primaries, with the NIR instrument NACO at the VLT. Results. Of these 52 systems, 7 are found to be triple (2 new) and 7 quadruple (1 new). The new close companions are most likely physically bound based on their probability of chance projection and, for some of them, on their position on a color–color diagram. The corresponding degree of multiplicity among wide binaries (number of triples and quadruples divided by the number of systems) is 26.9 ± 7.2% in the projected separation range ∼0. 07–12 �� , with the largest contribution from the Taurus-Auriga cloud. We also found that this degree of multiplicity is twice in Taurus compared to Ophiuchus and Chamaeleon for which the same number of sources are present in our sample. Considering a restricted sample composed of systems at distance 140–190 pc, the degree of multiplicity is 26.8 ± 8.1%, in the separation range 10/14 AU–1700/2300 AU (30 binaries, 5 triples, 6 quadruples). The observed frequency agrees with results from previous multiplicity surveys within the uncertainties, although a significant overabundance of quadruple systems compared to triple systems is apparent. Tentatively including the spectroscopic pairs in our restricted sample and comparing the multiplicity fractions to those measured for solar-type main-sequence stars in the solar neighborhood leads to the conclusion that both the ratio of triples to binaries and the ratio of quadruples to triples seems to be in excess among young stars. Most of the current numerical simulations of multiple star formation, and especially smoothed particles hydrodynamics simulations, over-predict the fraction of high-order multiplicity when compared to our results. The circumstellar properties around the individual components of our high-order multiple systems tend to favor mixed systems (i.e. systems including components of wTTS and cTTS type), which is in general agreement with previous studies of disks in binaries, with the exception of Taurus, where we find a preponderance of similar type of components among the multiples studied.
184 citations
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TL;DR: In this article, the authors compare the metallicity distributions of the host galaxies of long-duration gamma-ray bursts (GRBs) as well as quasar-selected damped Lyman-alpha (DLA) systems are drawn from the population of UV-selected star-forming, high-z galaxies (generally referred to as Lyman break galaxies).
Abstract: We test the hypothesis that the host galaxies of long-duration gamma-ray bursts (GRBs) as well as quasar-selected damped Lyman-alpha (DLA) systems are drawn from the population of UV-selected star-forming, high-z galaxies (generally referred to as Lyman-break galaxies). Specifically, we compare the metallicity distributions of the GRB and DLA populations to simple models where these galaxies are drawn randomly from the distribution of star-forming galaxies according to their star-formation rate and HI cross-section respectively. We find that it is possible to match both observational distributions assuming very simple and constrained relations between luminosity, metallicity and HI sizes. The simple model can be tested by observing the luminosity distribution of GRB host galaxies and by measuring the luminosity and impact parameters of DLA selected galaxies as a function of metallicity. Our results support the expectation that GRB and DLA samples, in contrast to magnitude limited surveys, provide an almost complete census of z=3 star-forming galaxies that are not heavily dust-obscured.
184 citations
Authors
Showing all 3617 results
Name | H-index | Papers | Citations |
---|---|---|---|
Robert C. Nichol | 187 | 851 | 162994 |
Richard S. Ellis | 169 | 882 | 136011 |
Rob Ivison | 166 | 1161 | 102314 |
Alvio Renzini | 162 | 908 | 95452 |
Timothy C. Beers | 156 | 934 | 102581 |
Krzysztof M. Gorski | 132 | 380 | 105912 |
Emanuele Daddi | 129 | 581 | 63187 |
P. R. Christensen | 127 | 313 | 88445 |
Mark Dickinson | 124 | 389 | 66770 |
Christopher W. Stubbs | 122 | 622 | 109429 |
Eva K. Grebel | 118 | 863 | 83915 |
Martin Asplund | 118 | 612 | 52527 |
Jesper Sollerman | 118 | 726 | 53436 |
E. F. van Dishoeck | 115 | 742 | 49190 |
Jørgen Christensen-Dalsgaard | 114 | 585 | 48272 |