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| DOI | 10.1088/0004-637X/799/2/159 | ||||
| Año | 2015 | ||||
| Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
Using 3.6 mu m images of 97 early-type galaxies, we develop and verify methodology to measure globular cluster populations from the S(4)G survey images. We find that (1) the ratio, T-N, of the number of clusters, N-CL, to parent galaxy stellar mass, M-*, rises weakly with M-* for early-type galaxies with M-* > 10(10) M-circle dot when we calculate galaxy masses using a universal stellar initial mass function (IMF) but that the dependence of T-N on M-* is removed entirely once we correct for the recently uncovered systematic variation of IMF with M-*; and (2) for M-* < 10(10) M-circle dot, there is no trend between N-CL and M-*, the scatter in T-N is significantly larger (approaching two orders of magnitude), and there is evidence to support a previous, independent suggestion of two families of galaxies. The behavior of N-CL in the lower-mass systems is more difficult to measure because these systems are inherently cluster-poor, but our results may add to previous evidence that large variations in cluster formation and destruction efficiencies are to be found among low-mass galaxies. The average fraction of stellar mass in clusters is similar to 0.0014 for M-* > 10(10) M-circle dot and can be as large as similar to 0.02 for less massive galaxies. These are the first results from the S(4)G sample of galaxies and will be enhanced by the sample of early-type galaxies now being added to S(4)G and complemented by the study of later-type galaxies within S(4)G.
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| 1 | Zaritsky, Dennis | Hombre |
UNIV ARIZONA - Estados Unidos
The University of Arizona - Estados Unidos |
| 2 | ARAVENA-PASTEN, MONICA | Hombre |
Universidad Diego Portales - Chile
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| 3 | Athanassoula, Evangelie | - |
Aix Marseille Univ - Francia
Laboratoire d'Astrophysique de Marseille - Francia |
| 4 | Bolzonella, M. | Mujer |
Aix Marseille Univ - Francia
|
| 5 | Comeron, S. | Hombre |
Univ Oulu - Finlandia
Univ Turku - Finlandia Oulun Yliopisto - Finlandia Turun yliopisto - Finlandia |
| 6 | Elmegreen, B. G. | Hombre |
IBM Corp - Estados Unidos
IBM Thomas J. Watson Research Center - Estados Unidos |
| 7 | Erroz-Ferrer, Santiago | Hombre |
Inst Astrofis Canarias - España
UNIV LA LAGUNA - España Instituto Astrofisico de Canarias - España Universidad de La Laguna - España |
| 8 | Gadotti, Dimitri | Hombre |
ESO - Chile
European Southern Observatory Santiago - Chile Observatorio Europeo Austral - Chile |
| 9 | Hinz, J. L. | - |
MMT Observ - Estados Unidos
MMT Observatory - Estados Unidos |
| 10 | Ho, Luis C. | - |
Peking Univ - China
|
| 11 | Holwerda, Benne W. | - |
Leiden Univ - Países Bajos
Leiden Observatory Research Institute - Países Bajos Sterrewacht Leiden - Países Bajos |
| 12 | Knapen, Johan H. | Hombre |
Inst Astrofis Canarias - España
UNIV LA LAGUNA - España Instituto Astrofisico de Canarias - España Universidad de La Laguna - España |
| 13 | Laine, J. | Hombre |
Univ Oulu - Finlandia
Oulun Yliopisto - Finlandia |
| 14 | Laurikainen, E. | Mujer |
Univ Oulu - Finlandia
Univ Turku - Finlandia Oulun Yliopisto - Finlandia Turun yliopisto - Finlandia |
| 15 | Muñoz-Mateos, Juan Carlos | Hombre |
Natl Radio Astron Observ - Estados Unidos
ESO - Chile European Southern Observatory Santiago - Chile National Radio Astronomy Observatory - Estados Unidos Observatorio Europeo Austral - Chile |
| 16 | Salo, Heikki | Hombre |
Univ Oulu - Finlandia
Oulun Yliopisto - Finlandia |
| 17 | Sheth, K. | - |
Natl Radio Astron Observ - Estados Unidos
National Radio Astronomy Observatory - Estados Unidos |
| Fuente |
|---|
| National Aeronautics and Space Administration |
| Seventh Framework Programme |
| Peking University |
| Kavli Foundation |
| NASA ADAP |
| CNES (Centre National d'Etudes Spatiales, France) |
| People Programme (Marie Curie Actions) of the European Union's Seventh Framework Programme FP7 under REA grant |
| Chinese Academy of Science through (Emergence of Cosmo-logical Structures) from the Strategic Priority Research Program |
| NYU CCPP |
| Agradecimiento |
|---|
| D.Z. acknowledges financial support from NASA ADAP NNX12AE27G and NYU CCPP for its hospitality during long-term visits. L.C.H. acknowledges support from the Kavli Foundation, Peking University, and the Chinese Academy of Science through grant XDB09030102 (Emergence of Cosmological Structures) from the Strategic Priority Research Program. E.A. and A.B. acknowledge financial support from the CNES (Centre National d'Etudes Spatiales, France) and from the People Programme (Marie Curie Actions) of the European Union's Seventh Framework Programme FP7/2007-2013/ under REA grant Agreement PITN-GA-2011-289313 to the DA-GAL network. The authors thank Ryan Leaman and Mike Beasley for valuable comments. This research has made use of the NASA/IPAC Extragalactic Database (NED), which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with NASA. The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc. Finally, we thank our conscientious referee for valued comments and suggestions. |