The intrinsic reddening of the Magellanic clouds as traced by background galaxies – II. The small Magellanic cloud
Author
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Bell, Cameron
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Cioni, María Rosa
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Wright, A. H.
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Rubele, Stefano
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Nidever, David L.
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Tatton, Ben L.
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Van Loon, Jacco Th.
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Zaritsky, Dennis
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Choi, Yumi
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Choudhury, Samyaday
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Clementini, Gisella
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Grijs, Richard de
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Vanov, Valentin D.
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Majewski, Steven R.
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Marconi, Marcella
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Martínez Delgado, David
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Massana, Pol
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Muñoz, Ricardo R.
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Niederhofer, Florian
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Noel, Noelia E. D.
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Oliveira, Joana M.
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Olsen, Knut
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Pennock, Clara M
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Ripepi, V.
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Subramanian, Smitha
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Vivas, A. Katherina.
Admission date
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2021-05-12T02:20:19Z
Available date
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2021-05-12T02:20:19Z
Publication date
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2020
Cita de ítem
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MNRAS 499, 993–1004 (2020)
es_ES
Identifier
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10.1093/mnras/staa2786
Identifier
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https://repositorio.uchile.cl/handle/2250/179561
Abstract
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We present a map of the total intrinsic reddening across similar or equal to 34 deg(2) of the Small Magellanic Cloud (SMC) derived using optical (ugriz) and near-infrared (IR; YJK(s)) spectral energy distributions (SEDs) of background galaxies. The reddening map is created using a subsample of 29 274 galaxies with low levels of intrinsic reddening based on the LEPHARE chi(2) minimization SED-fitting routine. We find statistically significant enhanced levels of reddening associated with the main body of the SMC compared with regions in the outskirts [Delta E(B - V) similar or equal to 0.3 mag]. A comparison with literature reddening maps of the SMC shows that, after correcting for differences in the volume of the SMC sampled, there is good agreement between our results and maps created using young stars. In contrast, we find significant discrepancies between our results and maps created using old stars or based on longer wavelength far-IR dust emission that could stem from biased samples in the former and uncertainties in the far-IR emissivity and the optical properties of the dust grains in the latter. This study represents one of the first large-scale categorizations of extragalactic sources behind the SMC and as such we provide the LEPHARE outputs for our full sample of similar to 500 000 sources.
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Patrocinador
dc.description.sponsorship
European Research Council (ERC)
682115
ERC consolidator grant project STARKEY
615604
National Science Foundation (NSF)
AST 1655677
Spanish Ministry for Science, Innovation and Universities
AYA2016-81065-C2-2
European Commission
AYA2016-81065-C2-2
State Agency for Research of the Spanish MCIU through the 'Centre of Excellence Severo Ochoa' award
SEV-2017-0709
PGC2018-095049B-C21
Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT)
CONICYT PIA/BASAL
AFB-170002
Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT)
CONICYT FONDECYT
1170364
Science and Engineering Research Board, India through a Ramanujan Fellowship
UK Research & Innovation (UKRI)
Science & Technology Facilities Council (STFC)
VISTA at the La Silla Paranal Observatory
179.B-2003
United States Department of Energy (DOE)
National Science Foundation (NSF)
Spanish Government
UK Research & Innovation (UKRI)
Science & Technology Facilities Council (STFC)
Higher Education Funding Council for England
National Center for Supercomputing Applications at the University of Illinois at Urbana-Champaign
Kavli Institute of Cosmological Physics at the University of Chicago
Ohio State University
Ciencia Tecnologia e Inovacao (FINEP)
Carlos Chagas Filho Foundation for Research Support of the State of Rio de Janeiro (FAPERJ)
Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPQ)
Ministerio da Ciencia, Tecnologia e Inovacao
German Research Foundation (DFG)
Mitchell Institute for Fundamental Physics and Astronomy at Texas AM University
United States Department of Energy (DOE)
University of Chicago
University of California at Santa Cruz
University of Cambridge
Centro de Investigaciones Energeticas, Medioambientales y Tecnologicas-Madrid
University of Chicago
University College London
DES-Brazil Consortium
University of Edinburgh
ETH Zurich
United States Department of Energy (DOE)
University of Chicago
University of Illinois atUrbanaChampaign
Institut de Ciencies de l'Espai (IEEC/CSIC)
Institut de Fisica d'Altes Energies
United States Department of Energy (DOE)
Ludwig-Maximilians Universitat Munchen
associated Excellence Cluster Universe
University of Michigan System
National Science Foundation (NSF)
NSF - Directorate for Mathematical & Physical Sciences (MPS)
University of Nottingham
Ohio State University
University of Pennsylvania
University of Portsmouth
Stanford University
United States Department of Energy (DOE)
Stanford University
University of Sussex
Texas AM University