The EDGE-CALIFA survey: Variations in the molecular gas depletion time in local galaxies

Autores
Utomo, Dyas; Bolatto, Alberto; Wong, Tony; Ostriker, Eve C.; Blitz, Leo; Sanchez, Sebastian F.; Colombo, Dario; Leroy, Adam K.; Cao, Yixian; Dannerbauer, Helmut; Garcia Benito, Ruben; Husemann, Bernd; Kalinova, Veselina; Levy, Rebecca C.; Mast, Damian; Rosolowsky, Erik; Vogel, Stuart N.
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present results from the EDGE survey, a spatially resolved CO(1-0) follow-up to CALIFA, an optical Integral Field Unit survey of local galaxies. By combining the data products of EDGE and CALIFA, we study the variation in molecular gas depletion time (τdep) on kiloparsec scales in 52 galaxies. We divide each galaxy into two parts: The center, defined as the region within 0.1 R25, and the disk, defined as the region between 0.1 and 0.7 R25. We find that 14 galaxies show a shorter τdep (∼1 Gyr) in the center relative to that in the disk (τdep ∼ 2.4 Gyr), which means the central region in those galaxies is more efficient at forming stars per unit molecular gas mass. This finding implies that the centers with shorter τdep resemble the intermediate regime between galactic disks and starburst galaxies. Furthermore, the central drop in τdep is correlated with a central increase in the stellar surface density, suggesting that a shorter τdep is associated with molecular gas compression by the stellar gravitational potential. We argue that varying the CO-To-H2 conversion factor only exaggerates the central drop of τdep.
Fil: Utomo, Dyas. University of California at Berkeley; Estados Unidos
Fil: Bolatto, Alberto. University of Maryland; Estados Unidos
Fil: Wong, Tony. University of Illinois at Urbana; Estados Unidos
Fil: Ostriker, Eve C.. University of Princeton; Estados Unidos
Fil: Blitz, Leo. University of California at Berkeley; Estados Unidos
Fil: Sanchez, Sebastian F.. Universidad Nacional Autónoma de México; México
Fil: Colombo, Dario. Max Planck Institute for Radio Astronomy; Alemania
Fil: Leroy, Adam K.. Ohio State University; Estados Unidos
Fil: Cao, Yixian. University of Illinois at Urbana; Estados Unidos
Fil: Dannerbauer, Helmut. Instituto de Astrofísica de Canarias; España
Fil: Garcia Benito, Ruben. Instituto de Astrofísica de Andalucía; España
Fil: Husemann, Bernd. Max Planck Institute für Astronomie; Alemania
Fil: Kalinova, Veselina. Max Planck Institute for Radio Astronomy; Alemania
Fil: Levy, Rebecca C.. University of Maryland; Estados Unidos
Fil: Mast, Damian. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina
Fil: Rosolowsky, Erik. University of Alberta; Canadá
Fil: Vogel, Stuart N.. University of Maryland; Estados Unidos
Materia
GALAXIES: STAR FORMATION
GALAXIES: STRUCTURE
ISM: ABUNDANCES
ISM: MOLECULES
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/70537
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/70537
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling The EDGE-CALIFA survey: Variations in the molecular gas depletion time in local galaxiesUtomo, DyasBolatto, AlbertoWong, TonyOstriker, Eve C.Blitz, LeoSanchez, Sebastian F.Colombo, DarioLeroy, Adam K.Cao, YixianDannerbauer, HelmutGarcia Benito, RubenHusemann, BerndKalinova, VeselinaLevy, Rebecca C.Mast, DamianRosolowsky, ErikVogel, Stuart N.GALAXIES: STAR FORMATIONGALAXIES: STRUCTUREISM: ABUNDANCESISM: MOLECULEShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We present results from the EDGE survey, a spatially resolved CO(1-0) follow-up to CALIFA, an optical Integral Field Unit survey of local galaxies. By combining the data products of EDGE and CALIFA, we study the variation in molecular gas depletion time (τdep) on kiloparsec scales in 52 galaxies. We divide each galaxy into two parts: The center, defined as the region within 0.1 R25, and the disk, defined as the region between 0.1 and 0.7 R25. We find that 14 galaxies show a shorter τdep (∼1 Gyr) in the center relative to that in the disk (τdep ∼ 2.4 Gyr), which means the central region in those galaxies is more efficient at forming stars per unit molecular gas mass. This finding implies that the centers with shorter τdep resemble the intermediate regime between galactic disks and starburst galaxies. Furthermore, the central drop in τdep is correlated with a central increase in the stellar surface density, suggesting that a shorter τdep is associated with molecular gas compression by the stellar gravitational potential. We argue that varying the CO-To-H2 conversion factor only exaggerates the central drop of τdep.Fil: Utomo, Dyas. University of California at Berkeley; Estados UnidosFil: Bolatto, Alberto. University of Maryland; Estados UnidosFil: Wong, Tony. University of Illinois at Urbana; Estados UnidosFil: Ostriker, Eve C.. University of Princeton; Estados UnidosFil: Blitz, Leo. University of California at Berkeley; Estados UnidosFil: Sanchez, Sebastian F.. Universidad Nacional Autónoma de México; MéxicoFil: Colombo, Dario. Max Planck Institute for Radio Astronomy; AlemaniaFil: Leroy, Adam K.. Ohio State University; Estados UnidosFil: Cao, Yixian. University of Illinois at Urbana; Estados UnidosFil: Dannerbauer, Helmut. Instituto de Astrofísica de Canarias; EspañaFil: Garcia Benito, Ruben. Instituto de Astrofísica de Andalucía; EspañaFil: Husemann, Bernd. Max Planck Institute für Astronomie; AlemaniaFil: Kalinova, Veselina. Max Planck Institute for Radio Astronomy; AlemaniaFil: Levy, Rebecca C.. University of Maryland; Estados UnidosFil: Mast, Damian. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; ArgentinaFil: Rosolowsky, Erik. University of Alberta; CanadáFil: Vogel, Stuart N.. University of Maryland; Estados UnidosIOP Publishing2017-11-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/70537Utomo, Dyas; Bolatto, Alberto; Wong, Tony; Ostriker, Eve C.; Blitz, Leo; et al.; The EDGE-CALIFA survey: Variations in the molecular gas depletion time in local galaxies; IOP Publishing; Astrophysical Journal; 849; 1; 1-11-2017; 26-260004-637XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.3847/1538-4357/aa88c0info:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.3847/1538-4357/aa88c0info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1704.03481info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:26:10Zoai:ri.conicet.gov.ar:11336/70537instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 15:26:11.021CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The EDGE-CALIFA survey: Variations in the molecular gas depletion time in local galaxies
title The EDGE-CALIFA survey: Variations in the molecular gas depletion time in local galaxies
spellingShingle The EDGE-CALIFA survey: Variations in the molecular gas depletion time in local galaxies
Utomo, Dyas
GALAXIES: STAR FORMATION
GALAXIES: STRUCTURE
ISM: ABUNDANCES
ISM: MOLECULES
title_short The EDGE-CALIFA survey: Variations in the molecular gas depletion time in local galaxies
title_full The EDGE-CALIFA survey: Variations in the molecular gas depletion time in local galaxies
title_fullStr The EDGE-CALIFA survey: Variations in the molecular gas depletion time in local galaxies
title_full_unstemmed The EDGE-CALIFA survey: Variations in the molecular gas depletion time in local galaxies
title_sort The EDGE-CALIFA survey: Variations in the molecular gas depletion time in local galaxies
dc.creator.none.fl_str_mv Utomo, Dyas
Bolatto, Alberto
Wong, Tony
Ostriker, Eve C.
Blitz, Leo
Sanchez, Sebastian F.
Colombo, Dario
Leroy, Adam K.
Cao, Yixian
Dannerbauer, Helmut
Garcia Benito, Ruben
Husemann, Bernd
Kalinova, Veselina
Levy, Rebecca C.
Mast, Damian
Rosolowsky, Erik
Vogel, Stuart N.
author Utomo, Dyas
author_facet Utomo, Dyas
Bolatto, Alberto
Wong, Tony
Ostriker, Eve C.
Blitz, Leo
Sanchez, Sebastian F.
Colombo, Dario
Leroy, Adam K.
Cao, Yixian
Dannerbauer, Helmut
Garcia Benito, Ruben
Husemann, Bernd
Kalinova, Veselina
Levy, Rebecca C.
Mast, Damian
Rosolowsky, Erik
Vogel, Stuart N.
author_role author
author2 Bolatto, Alberto
Wong, Tony
Ostriker, Eve C.
Blitz, Leo
Sanchez, Sebastian F.
Colombo, Dario
Leroy, Adam K.
Cao, Yixian
Dannerbauer, Helmut
Garcia Benito, Ruben
Husemann, Bernd
Kalinova, Veselina
Levy, Rebecca C.
Mast, Damian
Rosolowsky, Erik
Vogel, Stuart N.
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv GALAXIES: STAR FORMATION
GALAXIES: STRUCTURE
ISM: ABUNDANCES
ISM: MOLECULES
topic GALAXIES: STAR FORMATION
GALAXIES: STRUCTURE
ISM: ABUNDANCES
ISM: MOLECULES
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We present results from the EDGE survey, a spatially resolved CO(1-0) follow-up to CALIFA, an optical Integral Field Unit survey of local galaxies. By combining the data products of EDGE and CALIFA, we study the variation in molecular gas depletion time (τdep) on kiloparsec scales in 52 galaxies. We divide each galaxy into two parts: The center, defined as the region within 0.1 R25, and the disk, defined as the region between 0.1 and 0.7 R25. We find that 14 galaxies show a shorter τdep (∼1 Gyr) in the center relative to that in the disk (τdep ∼ 2.4 Gyr), which means the central region in those galaxies is more efficient at forming stars per unit molecular gas mass. This finding implies that the centers with shorter τdep resemble the intermediate regime between galactic disks and starburst galaxies. Furthermore, the central drop in τdep is correlated with a central increase in the stellar surface density, suggesting that a shorter τdep is associated with molecular gas compression by the stellar gravitational potential. We argue that varying the CO-To-H2 conversion factor only exaggerates the central drop of τdep.
Fil: Utomo, Dyas. University of California at Berkeley; Estados Unidos
Fil: Bolatto, Alberto. University of Maryland; Estados Unidos
Fil: Wong, Tony. University of Illinois at Urbana; Estados Unidos
Fil: Ostriker, Eve C.. University of Princeton; Estados Unidos
Fil: Blitz, Leo. University of California at Berkeley; Estados Unidos
Fil: Sanchez, Sebastian F.. Universidad Nacional Autónoma de México; México
Fil: Colombo, Dario. Max Planck Institute for Radio Astronomy; Alemania
Fil: Leroy, Adam K.. Ohio State University; Estados Unidos
Fil: Cao, Yixian. University of Illinois at Urbana; Estados Unidos
Fil: Dannerbauer, Helmut. Instituto de Astrofísica de Canarias; España
Fil: Garcia Benito, Ruben. Instituto de Astrofísica de Andalucía; España
Fil: Husemann, Bernd. Max Planck Institute für Astronomie; Alemania
Fil: Kalinova, Veselina. Max Planck Institute for Radio Astronomy; Alemania
Fil: Levy, Rebecca C.. University of Maryland; Estados Unidos
Fil: Mast, Damian. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina
Fil: Rosolowsky, Erik. University of Alberta; Canadá
Fil: Vogel, Stuart N.. University of Maryland; Estados Unidos
description We present results from the EDGE survey, a spatially resolved CO(1-0) follow-up to CALIFA, an optical Integral Field Unit survey of local galaxies. By combining the data products of EDGE and CALIFA, we study the variation in molecular gas depletion time (τdep) on kiloparsec scales in 52 galaxies. We divide each galaxy into two parts: The center, defined as the region within 0.1 R25, and the disk, defined as the region between 0.1 and 0.7 R25. We find that 14 galaxies show a shorter τdep (∼1 Gyr) in the center relative to that in the disk (τdep ∼ 2.4 Gyr), which means the central region in those galaxies is more efficient at forming stars per unit molecular gas mass. This finding implies that the centers with shorter τdep resemble the intermediate regime between galactic disks and starburst galaxies. Furthermore, the central drop in τdep is correlated with a central increase in the stellar surface density, suggesting that a shorter τdep is associated with molecular gas compression by the stellar gravitational potential. We argue that varying the CO-To-H2 conversion factor only exaggerates the central drop of τdep.
publishDate 2017
dc.date.none.fl_str_mv 2017-11-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/70537
Utomo, Dyas; Bolatto, Alberto; Wong, Tony; Ostriker, Eve C.; Blitz, Leo; et al.; The EDGE-CALIFA survey: Variations in the molecular gas depletion time in local galaxies; IOP Publishing; Astrophysical Journal; 849; 1; 1-11-2017; 26-26
0004-637X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/70537
identifier_str_mv Utomo, Dyas; Bolatto, Alberto; Wong, Tony; Ostriker, Eve C.; Blitz, Leo; et al.; The EDGE-CALIFA survey: Variations in the molecular gas depletion time in local galaxies; IOP Publishing; Astrophysical Journal; 849; 1; 1-11-2017; 26-26
0004-637X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.3847/1538-4357/aa88c0
info:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.3847/1538-4357/aa88c0
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1704.03481
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv IOP Publishing
publisher.none.fl_str_mv IOP Publishing
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.22299

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