ALMA Observations of SPT-discovered, Strongly Lensed, Dusty, Star-forming Galaxies
We present Atacama Large Millimeter/submillimeter Array (ALMA) 860 μm imaging of four high-redshift (z = 2.8-5.7) dusty sources that were detected using the South Pole Telescope (SPT) at 1.4 mm and are not seen in existing radio to far-infrared catalogs. At 1."5 resolution, the ALMA data reveal...
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ftcaltechauth:oai:authors.library.caltech.edu:38617 2023-05-15T18:22:52+02:00 ALMA Observations of SPT-discovered, Strongly Lensed, Dusty, Star-forming Galaxies Hezaveh, Y. D. Vieira, J. D. Lueker, M. Padin, S. Shirokoff, E. Staniszewski, Z. 2013-04-20 application/pdf https://authors.library.caltech.edu/38617/ https://authors.library.caltech.edu/38617/1/0004-637X_767_2_132.pdf https://resolver.caltech.edu/CaltechAUTHORS:20130521-144624396 en eng American Astronomical Society https://authors.library.caltech.edu/38617/1/0004-637X_767_2_132.pdf Hezaveh, Y. D. and Vieira, J. D. and Lueker, M. and Padin, S. and Shirokoff, E. and Staniszewski, Z. (2013) ALMA Observations of SPT-discovered, Strongly Lensed, Dusty, Star-forming Galaxies. Astrophysical Journal, 767 (2). Art. No. 132. ISSN 0004-637X. doi:10.1088/0004-637X/767/2/132. https://resolver.caltech.edu/CaltechAUTHORS:20130521-144624396 <https://resolver.caltech.edu/CaltechAUTHORS:20130521-144624396> other Article PeerReviewed 2013 ftcaltechauth https://doi.org/10.1088/0004-637X/767/2/132 2021-11-11T18:53:50Z We present Atacama Large Millimeter/submillimeter Array (ALMA) 860 μm imaging of four high-redshift (z = 2.8-5.7) dusty sources that were detected using the South Pole Telescope (SPT) at 1.4 mm and are not seen in existing radio to far-infrared catalogs. At 1."5 resolution, the ALMA data reveal multiple images of each submillimeter source, separated by 1"-3", consistent with strong lensing by intervening galaxies visible in near-IR imaging of these sources. We describe a gravitational lens modeling procedure that operates on the measured visibilities and incorporates self-calibration-like antenna phase corrections as part of the model optimization, which we use to interpret the source structure. Lens models indicate that SPT0346-52, located at z = 5.7, is one of the most luminous and intensely star-forming sources in the universe with a lensing corrected FIR luminosity of 3.7 × 10^(13) L_☉ and star formation surface density of 4200 M_☉ yr^(–1) kpc^(–2). We find magnification factors of 5 to 22, with lens Einstein radii of 1."1-2."0 and Einstein enclosed masses of 1.6-7.2 × 10^(11) M_☉. These observations confirm the lensing origin of these objects, allow us to measure their intrinsic sizes and luminosities, and demonstrate the important role that ALMA will play in the interpretation of lensed submillimeter sources. Article in Journal/Newspaper South pole Caltech Authors (California Institute of Technology) South Pole The Astrophysical Journal 767 2 132 |
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We present Atacama Large Millimeter/submillimeter Array (ALMA) 860 μm imaging of four high-redshift (z = 2.8-5.7) dusty sources that were detected using the South Pole Telescope (SPT) at 1.4 mm and are not seen in existing radio to far-infrared catalogs. At 1."5 resolution, the ALMA data reveal multiple images of each submillimeter source, separated by 1"-3", consistent with strong lensing by intervening galaxies visible in near-IR imaging of these sources. We describe a gravitational lens modeling procedure that operates on the measured visibilities and incorporates self-calibration-like antenna phase corrections as part of the model optimization, which we use to interpret the source structure. Lens models indicate that SPT0346-52, located at z = 5.7, is one of the most luminous and intensely star-forming sources in the universe with a lensing corrected FIR luminosity of 3.7 × 10^(13) L_☉ and star formation surface density of 4200 M_☉ yr^(–1) kpc^(–2). We find magnification factors of 5 to 22, with lens Einstein radii of 1."1-2."0 and Einstein enclosed masses of 1.6-7.2 × 10^(11) M_☉. These observations confirm the lensing origin of these objects, allow us to measure their intrinsic sizes and luminosities, and demonstrate the important role that ALMA will play in the interpretation of lensed submillimeter sources. |
format |
Article in Journal/Newspaper |
author |
Hezaveh, Y. D. Vieira, J. D. Lueker, M. Padin, S. Shirokoff, E. Staniszewski, Z. |
spellingShingle |
Hezaveh, Y. D. Vieira, J. D. Lueker, M. Padin, S. Shirokoff, E. Staniszewski, Z. ALMA Observations of SPT-discovered, Strongly Lensed, Dusty, Star-forming Galaxies |
author_facet |
Hezaveh, Y. D. Vieira, J. D. Lueker, M. Padin, S. Shirokoff, E. Staniszewski, Z. |
author_sort |
Hezaveh, Y. D. |
title |
ALMA Observations of SPT-discovered, Strongly Lensed, Dusty, Star-forming Galaxies |
title_short |
ALMA Observations of SPT-discovered, Strongly Lensed, Dusty, Star-forming Galaxies |
title_full |
ALMA Observations of SPT-discovered, Strongly Lensed, Dusty, Star-forming Galaxies |
title_fullStr |
ALMA Observations of SPT-discovered, Strongly Lensed, Dusty, Star-forming Galaxies |
title_full_unstemmed |
ALMA Observations of SPT-discovered, Strongly Lensed, Dusty, Star-forming Galaxies |
title_sort |
alma observations of spt-discovered, strongly lensed, dusty, star-forming galaxies |
publisher |
American Astronomical Society |
publishDate |
2013 |
url |
https://authors.library.caltech.edu/38617/ https://authors.library.caltech.edu/38617/1/0004-637X_767_2_132.pdf https://resolver.caltech.edu/CaltechAUTHORS:20130521-144624396 |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
South pole |
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South pole |
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https://authors.library.caltech.edu/38617/1/0004-637X_767_2_132.pdf Hezaveh, Y. D. and Vieira, J. D. and Lueker, M. and Padin, S. and Shirokoff, E. and Staniszewski, Z. (2013) ALMA Observations of SPT-discovered, Strongly Lensed, Dusty, Star-forming Galaxies. Astrophysical Journal, 767 (2). Art. No. 132. ISSN 0004-637X. doi:10.1088/0004-637X/767/2/132. https://resolver.caltech.edu/CaltechAUTHORS:20130521-144624396 <https://resolver.caltech.edu/CaltechAUTHORS:20130521-144624396> |
op_rights |
other |
op_doi |
https://doi.org/10.1088/0004-637X/767/2/132 |
container_title |
The Astrophysical Journal |
container_volume |
767 |
container_issue |
2 |
container_start_page |
132 |
_version_ |
1766202281197305856 |