Characterization of Herschel-selected strong lens candidates through HST and sub-mm/mm observations

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A90106%2F24%3A00617536" target="_blank" >RIV/67985815:90106/24:00617536 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1093/mnras/stad3381" target="_blank" >https://doi.org/10.1093/mnras/stad3381</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1093/mnras/stad3381" target="_blank" >10.1093/mnras/stad3381</a>

Result language

angličtina

Original language name

Characterization of Herschel-selected strong lens candidates through HST and sub-mm/mm observations

Original language description

We have carried out Hubble Space Telescope (HST) snapshot observations at 1.1 mu m of 281 candidate strongly lensed galaxies identified in the wide-area extragalactic surveys conducted with the Herschel Space Observatory. Our candidates comprise systems with flux densities at 500 mu m, S-500 >= 80 mJy. We model and subtract the surface brightness distribution for 130 systems, where we identify a candidate for the foreground lens candidate. After combining visual inspection, archival high-resolution observations, and lens subtraction, we divide the systems into different classes according to their lensing likelihood. We confirm 65 systems to be lensed. Of these, 30 are new discoveries. We successfully perform lens modelling and source reconstruction on 23 systems, where the foreground lenses are isolated galaxies and the background sources are detected in the HST images. All the systems are successfully modelled as a singular isothermal ellipsoid. The Einstein radii of the lenses and the magnifications of the background sources are consistent with previous studies. However, the background source circularized radii (between 0.34 and 1.30 kpc) are similar to 3 times smaller than the ones measured in the sub-millimetre/millimetre for a similarly selected and partially overlapping sample. We compare our lenses with those in the Sloan Lens Advanced Camera for Surveys (ACS) Survey confirming that our lens-independent selection is more effective at picking up fainter and diffuse galaxies and group lenses. This sample represents the first step towards characterizing the near-infrared properties and stellar masses of the gravitationally lensed dusty star-forming galaxies.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10308 - Astronomy (including astrophysics,space science)

Project

—

Continuities

—

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Monthly Notices of the Royal Astronomical Society

ISSN

0035-8711

e-ISSN

1365-2966

Volume of the periodical

528

Issue of the periodical within the volume

4

Country of publishing house

US - UNITED STATES

Number of pages

58

Pages from-to

6222-6279

UT code for WoS article

001169271500003

EID of the result in the Scopus database

2-s2.0-85185884875