Gravitationally Lensed CO and Dust at High Redshift: New LMT/GTM Images and Spectra of Sub-Millimeter Galaxies. Issue Volume 11:Issue S321(2015) (21st March 2017)

• Record Type: Journal Article
• Authors: Lowenthal, J. D.; Harrington, K.; Berman, D.; Yun, M.; Cybulski, R.; Wilson, G. W.; Aretxaga, I.; Chavez, M.; De la Luz, V.; Erickson, N.; Ferrusca, D.; Gallup, A.; Hughes, D.; Montaña, A.; Narayanan, G.; Sánchez-Argüelles, D.; Schloerb, F. P.; Souccar, K.; Terlevich, E.; Terlevich, R.; Zeballos, M.; Zavala, J. A.
• Editors: Gil de Paz, Armando; Knapen, Johan H.; Lee, Janice C.
• Is Part Of: Proceedings of the International Astronomical Union. Volume 11:Issue S321(2015)
• Page Start: 363
• Page End: 363
• Publication Date: 2017-03-21
• Subjects: galaxies: starburst, -- galaxies: high-redshift, -- submillimeter, -- infrared: galaxies, -- gravitational lensing; Astronomy -- Congresses; Astronomy -- Periodicals; 520
• DOI: 10.1017/S1743921316011145
• Languages: English
• ISSNs: 1743-9213

Abstract

Abstract: We have assembled a new sample of some of the most FIR-luminous galaxies in the Universe and have imaged them in 1.1 mm dust emission and measured their redshifts 1 < z < 4 via CO emission lines using the 32-m Large Millimeter Telescope / Gran Telescopio Milimétrico (LMT/GTM). Our sample of 31 submm galaxies (SMGs), culled from the Planck and Herschel all-sky surveys, includes 14 of the 21 most luminous galaxies known, with LFIR > 10 14 L ⊙ and SFR > 10 4 M⊙ /yr. These extreme inferred luminosities – and multiple / extended 1.1 mm images – imply that most or all are strongly gravitationally lensed, with typical magnification μ ~ 10 × . The gravitational lensing provides two significant benefits: (1) it boosts the S / N, and (2) it allows investigation of star formation and gas processes on sub-kpc scales.