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| DOI | 10.1093/MNRAS/STZ771 | ||||
| Año | 2019 | ||||
| Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
The claimed detection of a diffuse galaxy lacking dark matter represents a possible challenge to our understanding of the properties of these galaxies and galaxy formation in general. The galaxy, already identified in photographic plates taken in the summer of 1976 at the UK 48- in Schmidt telescope, presents normal distance-independent properties (e.g. colour, velocity dispersion of its globular clusters). However, distance-dependent quantities are at odds with those of other similar galaxies, namely the luminosity function and sizes of its globular clusters, mass-to-light ratio, and dark matter content. Here we carry out a careful analysis of all extant data and show that they consistently indicate a much shorter distance (13 Mpc) than previously indicated (20 Mpc). With this revised distance, the galaxy appears to be a rather ordinary low surface brightness galaxy (R-e = 1.4 +/- 0.1 kpc; M-star = 6.0 +/- 3.6 x 10(7) M-circle dot) with plenty of room for dark matter (the fraction of dark matter inside the half-mass radius is >75 per cent and M-halo/M-star > 20) corresponding to a minimum halo mass >10(9) M-circle dot. At 13 Mpc, the luminosity and structural properties of the globular clusters around the object are the same as those found in other galaxies.
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| 1 | Trujillo, Ignacio | Hombre |
IAC - España
ULL - España Instituto Astrofisico de Canarias - España Universidad de La Laguna - España |
| 2 | Beasley, Michael A. | Hombre |
IAC - España
ULL - España Instituto Astrofisico de Canarias - España Universidad de La Laguna - España |
| 3 | Borlaff, Alejandro S. | Hombre |
IAC - España
ULL - España Instituto Astrofisico de Canarias - España Universidad de La Laguna - España |
| 4 | CARRASCO-DAMELE, ELEAZAR RODRIGO | - |
Observatorio Gemini - Chile
Gemini ObservatorySouthern Operations Center - Chile |
| 5 | Di Cintio, Arianna | Mujer |
IAC - España
ULL - España Instituto Astrofisico de Canarias - España Universidad de La Laguna - España |
| 5 | Cintio, Arianna Di | Mujer |
Instituto Astrofisico de Canarias - España
Universidad de La Laguna - España |
| 6 | Filho, Mercedes | Mujer |
Univ Lisbon - Portugal
Univ Porto - Portugal Instituto Superior Técnico - Portugal Universidade do Porto - Portugal |
| 7 | Monelli, M. | Hombre |
IAC - España
ULL - España Instituto Astrofisico de Canarias - España Universidad de La Laguna - España |
| 8 | Montes, Mireia | Mujer |
Univ New South Wales - Australia
University of New South Wales (UNSW) Australia - Australia UNSW Sydney - Australia |
| 9 | ROMAN-SILVA, JAVIER IGNACIO | Hombre |
IAC - España
ULL - España Instituto Astrofisico de Canarias - España Universidad de La Laguna - España |
| 10 | Ruiz Lara, T. | Hombre |
IAC - España
ULL - España Instituto Astrofisico de Canarias - España Universidad de La Laguna - España |
| 11 | Almeida, Jorge Sánchez | Hombre |
IAC - España
ULL - España Instituto Astrofisico de Canarias - España Universidad de La Laguna - España |
| 12 | Valls-Gabaud, D. | Hombre |
Observ Paris - Francia
LERMA - Laboratoire d'Études du Rayonnement et de la Matière en Astrophysique et Atmosphères - Francia L'Observatoire de Paris - Francia |
| 13 | Vazdekis, Alexandre | Hombre |
IAC - España
ULL - España Instituto Astrofisico de Canarias - España Universidad de La Laguna - España |
| Fuente |
|---|
| National Science Foundation |
| Fundação para a Ciência e a Tecnologia |
| Comisión Nacional de Investigación Científica y Tecnológica |
| Ministerio de Ciencia, Tecnología e Innovación Productiva |
| European Research Council |
| U.S. Department of Energy |
| National Research Council |
| Comisión Nacional de Investigación CientÃfica y Tecnológica |
| ERC |
| National Aeronautics and Space Administration |
| Consejo Nacional de Innovacion, Ciencia y Tecnologia |
| Ministerio de Ciencia, Innovacion y Universidades |
| Max Planck Society |
| Alfred P. Sloan Foundation |
| Johns Hopkins University |
| New Mexico State University |
| Princeton University |
| University of Washington |
| Max-Planck-Gesellschaft |
| Fundação para a Ciência e a Tecnologia |
| University of Chicago |
| Ministry of Economy |
| Spanish Ministry of Economy and Competitiveness (MINECO) |
| European Union’s Horizon 2020 |
| Gemini Observatory |
| Ministerio da Ciencia, Tecnologia e Inovacao |
| Fuel Cell Technologies Program |
| University of California, Los Angeles |
| European Union's Horizon 2020 research and innovation programme under Marie Sklodowska-Curie grant |
| Horizon 2020 Framework Programme |
| Japanese Monbukagakusho |
| ERC Advanced |
| Spanish Ministry of Economy |
| University of Pittsburgh |
| Japan Participation Group |
| Max-Planck-Institute for Astrophysics (MPA) |
| Institute for Advanced Study |
| Los Alamos National Laboratory |
| United States Naval Observatory |
| Fermilab |
| Max-Planck-Institute for Astronomy (MPIA) |
| Instituto Nacional de Ciência e Tecnologia para Excitotoxicidade e Neuroproteção |
| Association of Universities for Research in Astronomy, Inc. |
| Jet Propulsion Laboratory/California Institute of Technology |
| Immune Tolerance Network |
| Sloan Digital Sky Survey |
| 'Fundacao para a Ciencia e Tecnologia' (FCT - Portugal) |
| Monbukagakusho (Japanese government) scholarship |
| Marie-Sklodowska-Curie Individual Fellowship grant |
| Severo Ochoa Excellence program |
| Ministerio de Ciencia, TecnologÃa e Innovación Productiva |
| Ministério da Ciência, Tecnologia e Inovação |
| National Research Council (Canada) |
| NSF on |
| Ministério da Ciência, Tecnologia e Ensino Superior |
| Gemini Observatory Archive |
| Instituto Nacional de Ciência e Tecnologia para Excitotoxicidade e Neuroproteção |
| Agradecimiento |
|---|
| This work was partly done using GNU Astronomy Utilities (GNUASTRO) version 0.5. GNUASTRO is a generic package for astronomical data manipulation and analysis that was initially created and developed for research funded by the Monbukagakusho (Japanese government) scholarship and ERC advanced grant 339659-MUSICOS. |
| Funding for the Sloan Digital Sky Survey (SDSS) has been provided by the Alfred P. Sloan Foundation, the Participating Institutions, the National Aeronautics and Space Administration, the National Science Foundation, the U.S. Department of Energy, the Japanese Monbuka-gakusho, and the Max Planck Society. The SDSS Web site is http://www.sdss.org/. The SDSS is managed by the Astrophysical Research Consortium (ARC) for the Participating Institutions. The Participating Institutions are The University of Chicago, Fermilab, the Institute for Advanced Study, the Japan Participation Group, The Johns Hopkins University, Los Alamos National Laboratory, the Max-Planck-Institute for Astronomy (MPIA), the Max-Planck-Institute for Astrophysics (MPA), New Mexico State University, University of Pittsburgh, Princeton University, the United States Naval Observatory, and the University of Washing- ton. GALEX (Galaxy Evolution Explorer) is a NASA Small Explorer, launched in April 2003. We gratefully acknowledge NASA’s support for construction, operation, and science analysis for the GALEX mission, developed in cooperation with the Centre National d’Etudes Spatiales (CNES) of France and the Korean Ministry of Science and Technology. This publication makes use of data products from the Wide-field Infrared Survey Explorer (WISE), which is a joint project of the University of California, Los Angeles, and the Jet Propulsion Laboratory/California Institute of Technology, funded by the National Aeronautics and Space Administration. |