A bias in optical observations of high-redshift luminous infrared galaxies

We present evidence for the dramatically different morphology between the rest-frame UV and 7 μm mid-IR emission of VV 114 and Arp 299, two nearby (z ∼ 0) violently interacting luminous infrared galaxies (LIRGs). Nearly all LIRGs are interacting systems, and it is currently accepted that they domina...

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Detalles Bibliográficos
Autores principales:	Charmandaris, V., Le Floc'h, E., Mirabel, I.F.
Formato:	JOUR
Materias:	Galaxies: high-redshift Galaxies: individual (Arp 299, VV 114) Galaxies: starburst Infrared: galaxies Ultraviolet: galaxies
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_0004637X_v600_n1II_pL15_Charmandaris
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_0004637X_v600_n1II_pL15_Charmandaris
record_format	dspace
spelling	todo:paper_0004637X_v600_n1II_pL15_Charmandaris2023-10-03T14:01:55Z A bias in optical observations of high-redshift luminous infrared galaxies Charmandaris, V. Le Floc'h, E. Mirabel, I.F. Galaxies: high-redshift Galaxies: individual (Arp 299, VV 114) Galaxies: starburst Infrared: galaxies Ultraviolet: galaxies We present evidence for the dramatically different morphology between the rest-frame UV and 7 μm mid-IR emission of VV 114 and Arp 299, two nearby (z ∼ 0) violently interacting luminous infrared galaxies (LIRGs). Nearly all LIRGs are interacting systems, and it is currently accepted that they dominate the IR emission at z > 1. LIRGs located at z = 1-2 could easily be detected as unresolved sources in deep optical/near-IR ground-based surveys as well as in upcoming 24 μm surveys with the Space Infrared Telescope Facility. We demonstrate that the spatial resolution of these surveys will result in blending of the emission from unresolved interacting components. An increased scatter will thus be introduced in the observed optical-to-mid-IR colors of these galaxies, leading to a systematic underestimation of their dust content. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_0004637X_v600_n1II_pL15_Charmandaris
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Galaxies: high-redshift Galaxies: individual (Arp 299, VV 114) Galaxies: starburst Infrared: galaxies Ultraviolet: galaxies
spellingShingle	Galaxies: high-redshift Galaxies: individual (Arp 299, VV 114) Galaxies: starburst Infrared: galaxies Ultraviolet: galaxies Charmandaris, V. Le Floc'h, E. Mirabel, I.F. A bias in optical observations of high-redshift luminous infrared galaxies
topic_facet	Galaxies: high-redshift Galaxies: individual (Arp 299, VV 114) Galaxies: starburst Infrared: galaxies Ultraviolet: galaxies
description	We present evidence for the dramatically different morphology between the rest-frame UV and 7 μm mid-IR emission of VV 114 and Arp 299, two nearby (z ∼ 0) violently interacting luminous infrared galaxies (LIRGs). Nearly all LIRGs are interacting systems, and it is currently accepted that they dominate the IR emission at z > 1. LIRGs located at z = 1-2 could easily be detected as unresolved sources in deep optical/near-IR ground-based surveys as well as in upcoming 24 μm surveys with the Space Infrared Telescope Facility. We demonstrate that the spatial resolution of these surveys will result in blending of the emission from unresolved interacting components. An increased scatter will thus be introduced in the observed optical-to-mid-IR colors of these galaxies, leading to a systematic underestimation of their dust content.
format	JOUR
author	Charmandaris, V. Le Floc'h, E. Mirabel, I.F.
author_facet	Charmandaris, V. Le Floc'h, E. Mirabel, I.F.
author_sort	Charmandaris, V.
title	A bias in optical observations of high-redshift luminous infrared galaxies
title_short	A bias in optical observations of high-redshift luminous infrared galaxies
title_full	A bias in optical observations of high-redshift luminous infrared galaxies
title_fullStr	A bias in optical observations of high-redshift luminous infrared galaxies
title_full_unstemmed	A bias in optical observations of high-redshift luminous infrared galaxies
title_sort	bias in optical observations of high-redshift luminous infrared galaxies
url	http://hdl.handle.net/20.500.12110/paper_0004637X_v600_n1II_pL15_Charmandaris
work_keys_str_mv	AT charmandarisv abiasinopticalobservationsofhighredshiftluminousinfraredgalaxies AT lefloche abiasinopticalobservationsofhighredshiftluminousinfraredgalaxies AT mirabelif abiasinopticalobservationsofhighredshiftluminousinfraredgalaxies AT charmandarisv biasinopticalobservationsofhighredshiftluminousinfraredgalaxies AT lefloche biasinopticalobservationsofhighredshiftluminousinfraredgalaxies AT mirabelif biasinopticalobservationsofhighredshiftluminousinfraredgalaxies
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A bias in optical observations of high-redshift luminous infrared galaxies

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