A kpc-scale resolved study of unobscured and obscured star-formation activity in normal galaxies at z = 1.5 and 2.2 from ALMA and HiZELS
Author | dc.contributor.author | Cheng, Cheng | |
Author | dc.contributor.author | Ibar, Edo | |
Author | dc.contributor.author | Smail, Ian | |
Author | dc.contributor.author | Molina, Juan C. | |
Author | dc.contributor.author | Sobral, David | |
Author | dc.contributor.author | Escala Astorquiza, Andrés | |
Author | dc.contributor.author | Best, Philip | |
Author | dc.contributor.author | Cochrane, Rachel | |
Author | dc.contributor.author | Gillman, Steven | |
Author | dc.contributor.author | Swinbank, Mark | |
Author | dc.contributor.author | Ivison, R. J. | |
Author | dc.contributor.author | Huang, Jia Sheng | |
Author | dc.contributor.author | Hughes, Thomas M. | |
Author | dc.contributor.author | Villard, Eric | |
Author | dc.contributor.author | Cirasuolo, Michele | |
Admission date | dc.date.accessioned | 2021-07-02T01:17:41Z | |
Available date | dc.date.available | 2021-07-02T01:17:41Z | |
Publication date | dc.date.issued | 2020 | |
Cita de ítem | dc.identifier.citation | MNRAS 000, 1–14 (2020) | es_ES |
Identifier | dc.identifier.other | 10.1093/mnras/staa3036 | |
Identifier | dc.identifier.uri | https://repositorio.uchile.cl/handle/2250/180382 | |
Abstract | dc.description.abstract | We present Atacama Large Millimeter/Submillimeter Array (ALMA) continuum observations of a sample of nine star-forming galaxies at redshifts 1.47 and 2.23 selected from the High-z Emission Line Survey (HiZELS). Four galaxies in our sample are detected at high significance by ALMA at a resolution of 0 ''.25 at rest-frame 355 mu m. Together with the previously observed H alpha emission, from adaptive optics-assisted integral-field-unit spectroscopy (similar to 0 ''.15 resolution), and F606W and F140W imaging from the Hubble Space Telescope (similar to 0 ''.2 resolution), we study the star formation activity, stellar and dust mass in these high-redshift galaxies at similar to kpc-scale resolution. We find that ALMA detection rates are higher for more massive galaxies (M-* > 10(10.5) M-circle dot) and higher [N II]/H alpha ratios (>0.25, a proxy for gas-phase metallicity). The dust extends out to a radius of 8 kpc, with a smooth structure, even for those galaxies presenting clumpy H alpha morphologies. The half-light radii (R-dust) derived for the detected galaxies are of the order similar to 4.5 kpc, more than twice the size of submillimetre-selected galaxies at a similar redshift. Our global star formation rate estimates - from far-infrared and extinction-corrected H alpha luminosities - are in good agreement. However, the different morphologies of the different phases of the interstellar medium suggest complex extinction properties of the high-redshift normal galaxies. | es_ES |
Patrocinador | dc.description.sponsorship | National Key R&D Program of China 2017YFA0402704 2016YFA0400702 National Natural Science Foundation of China (NSFC) 11803044 11673028 National Natural Science Foundation of China (NSFC) 11933003 Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT) CONICYT FONDECYT 1171710 UK Research & Innovation (UKRI) Science & Technology Facilities Council (STFC) ST/N50404X/1 ST/L00075X/1 UK Research & Innovation (UKRI) Science & Technology Facilities Council (STFC) ST/T000244/1 ST/R000972/1 Chinese Academy of Sciences National Natural Science Foundation of China (NSFC) 11721303 11991052 Center of Excellence in Astrophysics and Associated Technologies AFB-170002 Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT) CONICYT FONDECYT 1181663 National Aeronautics & Space Administration (NASA) NAS 5-26555 | es_ES |
Lenguage | dc.language.iso | en | es_ES |
Publisher | dc.publisher | Oxford | es_ES |
Type of license | dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Chile | * |
Link to License | dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/cl/ | * |
Source | dc.source | Monthly Notices of the Royal Astronomical Society | es_ES |
Keywords | dc.subject | Galaxies: ISM | es_ES |
Keywords | dc.subject | Galaxies: starburst | es_ES |
Keywords | dc.subject | Galaxies: star formation | es_ES |
Keywords | dc.subject | Submillimetre: galaxies | es_ES |
Título | dc.title | A kpc-scale resolved study of unobscured and obscured star-formation activity in normal galaxies at z = 1.5 and 2.2 from ALMA and HiZELS | es_ES |
Document type | dc.type | Artículo de revista | es_ES |
dcterms.accessRights | dcterms.accessRights | Acceso Abierto | |
Cataloguer | uchile.catalogador | crb | es_ES |
Indexation | uchile.index | Artículo de publicación ISI | |
Indexation | uchile.index | Artículo de publicación SCOPUS |
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