Author ORCID Identifier

Patrick S. Kamieneski: 0000-0001-9394-6732

Min S. Yun: 0000-0001-7095-7543

Kevin C. Harrington: 0000-0001-5429-5762

James D. Lowenthal: 0000-0001-9969-3115

Q. Daniel Wang: 0000-0002-9279-4041

Brenda L. Frye: 0000-0003-1625-8009

Eric F. Jiménez-Andrade: 0000-0002-2640-5917

Amit Vishwas: 0000-0002-4444-8929

Olivia Cooper: 0000-0003-3881-1397

Massimo Pascale: 0000-0002-2282-8795

Nicholas Foo: 0000-0002-7460-8460

Derek Berman: 0000-0002-9800-0249

Anthony Englert: 0000-0003-2314-5336

Carlos Garcia Diaz: 0000-0002-4223-2016

Document Type

Article

Publication Date

1-1-2024

Publication Title

Astrophysical Journal

Abstract

The PASSAGES (Planck All-Sky Survey to Analyze Gravitationally-lensed Extreme Starbursts) collaboration has recently defined a sample of 30 gravitationally lensed dusty star-forming galaxies (DSFGs). These rare, submillimeter-selected objects enable high-resolution views of the most extreme sites of star formation in galaxies at cosmic noon. Here, we present the first major compilation of strong lensing analyses using lenstool for PASSAGES, including 15 objects spanning z = 1.1-3.3, using complementary information from 0.″6-resolution 1.1 mm Atacama Large Millimeter/submillimeter Array and 0.″4 5 cm Jansky Very Large Array continuum imaging, in tandem with 1.6 μm Hubble and optical imaging with Gemini-S. Magnifications range from μ = 2 to 28 (median μ = 7), yielding intrinsic infrared luminosities of L IR = 0.2-5.9 × 1013 L ⊙ (median 1.4 × 1013 L ⊙) and inferred star formation rates of 170-6300 M ⊙ yr−1 (median 1500 M ⊙ yr−1). These results suggest that the PASSAGES objects comprise some of the most extreme known starbursts, rivaling the luminosities of even the brightest unlensed objects, further amplified by lensing. The intrinsic sizes of far-infrared continuum regions are large (R e = 1.7-4.3 kpc; median 3.0 kpc) but consistent with L IR-R e scaling relations for z > 1 DSFGs, suggesting a widespread spatial distribution of star formation. With modestly high angular resolution, we explore if these objects might be maximal starbursts. Instead of approaching Eddington-limited surface densities, above which radiation pressure will disrupt further star formation, they are safely sub-Eddington—at least on global, galaxy-integrated scales.

Volume

961

Issue

1

DOI

10.3847/1538-4357/acf930

ISSN

0004637X

Creative Commons License

Creative Commons Attribution 4.0 International License
This work is licensed under a Creative Commons Attribution 4.0 International License.

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