Resolving a dusty, star-forming SHiZELS galaxy at z = 22 with HST, ALMA and SINFONI on kiloparsec scales

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dc.contributor.authorCochrane, R K
dc.contributor.authorBest, P N
dc.contributor.authorSmail, I
dc.contributor.authorIbar, E
dc.contributor.authorCheng, C
dc.contributor.authorSwinbank, A M
dc.contributor.authorMolina, J
dc.contributor.authorSobral, D
dc.contributor.authorDudzevičiūtė, U
dc.date.accessioned2022-11-30T02:46:16Z
dc.date.available2022-11-30T02:46:16Z
dc.date.issued2021
dc.description.abstractWe present ∼0.15 arcsec spatial resolution imaging of SHiZELS-14, a massive (⁠M∗∼1011M⊙⁠), dusty, star-forming galaxy at z = 2.24. Our rest-frame ∼1kpc-scale, matched-resolution data comprise four different widely used tracers of star formation: the Hα emission line (from SINFONI/VLT), rest-frame UV continuum (from HST F606W imaging), the rest-frame far-infrared (from ALMA), and the radio continuum (from JVLA). Although originally identified by its modest Hα emission line flux, SHiZELS-14 appears to be a vigorously star-forming (⁠SFR∼1000M⊙yr−1⁠) example of a submillimetre galaxy, probably undergoing a merger. SHiZELS-14 displays a compact, dusty central starburst, as well as extended emission in Hα and the rest-frame optical and FIR. The UV emission is spatially offset from the peak of the dust continuum emission, and appears to trace holes in the dust distribution. We find that the dust attenuation varies across the spatial extent of the galaxy, reaching a peak of at least AH α ∼ 5 in the most dusty regions, although the extinction in the central starburst is likely to be much higher. Global star-formation rates inferred using standard calibrations for the different tracers vary from ∼10−1000M⊙yr−1⁠, and are particularly discrepant in the galaxy’s dusty centre. This galaxy highlights the biased view of the evolution of star-forming galaxies provided by shorter wavelength data.en_ES
dc.facultadFacultad de Cienciasen_ES
dc.file.nameCochrane_Res2021.pdf
dc.identifier.citationR K Cochrane, P N Best, I Smail, E Ibar, C Cheng, A M Swinbank, J Molina, D Sobral, U Dudzevičiūtė, Resolving a dusty, star-forming SHiZELS galaxy at z = 2.2 with HST, ALMA, and SINFONI on kiloparsec scales, Monthly Notices of the Royal Astronomical Society, Volume 503, Issue 2, May 2021, Pages 2622–2638, https://doi.org/10.1093/mnras/stab467en_ES
dc.identifier.doihttps://doi.org/10.1093/mnras/stab467
dc.identifier.urihttp://repositoriobibliotecas.uv.cl/handle/uvscl/7293
dc.languageen
dc.publisherRoyal Astronomical Society
dc.rights© 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society
dc.sourceMonthly Notices of the Royal Astronomical Society
dc.subjectGALAXIES: EVOLUTIONen_ES
dc.subjectGALAXIES: HIGH REDSHIFTen_ES
dc.subjectGALAXIES: STARBURSTen_ES
dc.subjectGALAXIES: STAR FORMATIONen_ES
dc.subjectINFRARED: GALAXIESen_ES
dc.subjectSUBMILLIMETRE: GALAXIESen_ES
dc.titleResolving a dusty, star-forming SHiZELS galaxy at z = 22 with HST, ALMA and SINFONI on kiloparsec scales
dc.typeArticulo
uv.departamentoInstituto de Fisica y Astronomia
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