Euclid view of the dusty star-forming galaxies at ≳ detected in wide area submillimetre surveys

Mitra, Dipanjan, Negrello, Mattia ORCID: https://orcid.org/0000-0002-7925-7663, De Zotti, Gianfranco and Cai, Zhen-Yi 2024. Euclid view of the dusty star-forming galaxies at ≳ detected in wide area submillimetre surveys. Monthly Notices of the Royal Astronomical Society 530 (2) , pp. 2292-2314. 10.1093/mnras/stae976

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Abstract

We investigate the constraints provided by the Euclid space observatory on the physical properties of dusty star-forming galaxies (DSFGs) at detected in wide area submillimetre surveys with Herschel. We adopt a physical model for the high-z progenitors of spheroidal galaxies, which form the bulk of DSFGs at ⁠. We improve the model by combining the output of the equations of the model with a formalism for the spectral energy distribution (SED). After optimizing the SED parameters to reproduce the measured infrared luminosity function and number counts of DFSGs, we simulated a sample of DSFGs over 100  and then applied a detection limit of mJy at 250  m. We estimated the redshifts from the Euclid data and then fitted the Euclid+Herschel photometry with the code CIGALE to extract the physical parameters. We found that 100 per cent of the Herschel galaxies are detected in all 4 Euclid bands above ⁠. For 87 per cent of these sources the accuracy on is better than 15 per cent. The sample comprises mostly massive, i.e. ⁠, highly star forming, i.e. ⁠, dusty, i.e. ⁠, galaxies. The measured stellar masses have a dispersion of 0.19 dex around the true value, thus showing that Euclid will provide reliable stellar mass estimates for the majority of the bright DSFGs at detected by Herschel. We also explored the effect of complementing the Euclid photometry with that from the Vera C. Rubin Observatory/LSST.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Publisher:	Oxford University Press
ISSN:	0035-8711
Date of First Compliant Deposit:	3 May 2024
Date of Acceptance:	5 April 2024
Last Modified:	03 May 2024 14:56
URI:	https://orca.cardiff.ac.uk/id/eprint/167897

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