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dc.creatorRhoads, James E.en_US
dc.creatorMalhotra, Sangeetaen_US
dc.creatorAllam, Saharen_US
dc.creatorCarilli, Chrisen_US
dc.creatorCombes, Francoiseen_US
dc.creatorFinkelstein, Keelyen_US
dc.creatorFinkelstein, Steven L.en_US
dc.creatorFrye, Brendaen_US
dc.creatorGerin, Maryvonneen_US
dc.creatorGuillard, Pierreen_US
dc.creatorNesvadba, Nicoleen_US
dc.creatorRigby, Janeen_US
dc.creatorSpaans, Marcoen_US
dc.creatorStrauss, Michael A.en_US
dc.date.accessioned2016-04-28T19:37:50Z
dc.date.available2016-04-28T19:37:50Z
dc.date.issued2014-05en
dc.identifierdoi:10.15781/T2MN87
dc.identifier.citationRhoads, James E., Sangeeta Malhotra, Sahar Allam, Chris Carilli, Fran�oise Combes, Keely Finkelstein, Steven Finkelstein et al. "Herschel Extreme Lensing Line Observations: Dynamics of Two Strongly Lensed Star-forming Galaxies near Redshift z= 2." The Astrophysical Journal, Vol. 787, No. 1 (May., 2014): 8.en_US
dc.identifier.issn0004-637Xen_US
dc.identifier.urihttp://hdl.handle.net/2152/34961
dc.description.abstractWe report on two regularly rotating galaxies at redshift z approximate to 2, using high-resolution spectra of the bright [C II] 158 mu m emission line from the HIFI instrument on the Herschel Space Observatory. Both SDSS090122.37+181432.3 ("S0901") and SDSSJ120602.09+514229.5 ("the Clone") are strongly lensed and show the double-horned line profile that is typical of rotating gas disks. Using a parametric disk model to fit the emission line profiles, we find that S0901 has a rotation speed of nu sin(i) approximate to 120 +/- 7 kms(-1) and a gas velocity dispersion of sigma(g) < 23 km s-1 (1 sigma). The best-fitting model for the Clone is a rotationally supported disk having nu sin(i) approximate to 79 +/- 11 km s(-1) and sigma(g) less than or similar to 4 kms-1 (1 sigma). However, the Clone is also consistent with a family of dispersion-dominated models having sigma(g) = 92 +/- 20 km s (1). Our results showcase the potential of the [C II] line as a kinematic probe of high-redshift galaxy dynamics: [C II] is bright, accessible to heterodyne receivers with exquisite velocity resolution, and traces dense star-forming interstellar gas. Future [C II] line observations with ALMA would offer the further advantage of spatial resolution, allowing a clearer separation between rotation and velocity dispersion.en_US
dc.description.sponsorshipNASA through Herschel GOen_US
dc.language.isoEnglishen_US
dc.relation.ispartofen_US
dc.rightsAdministrative deposit of works to Texas ScholarWorks: This works author(s) is or was a University faculty member, student or staff member; this article is already available through open access or the publisher allows a PDF version of the article to be freely posted online. The library makes the deposit as a matter of fair use (for scholarly, educational, and research purposes), and to preserve the work and further secure public access to the works of the University.en_US
dc.subjectgalaxies: evolutionen_US
dc.subjectgalaxies: formationen_US
dc.subjectgalaxies: high-redshiften_US
dc.subjectframe optical-spectraen_US
dc.subjectlyman break galaxiesen_US
dc.subjectgasen_US
dc.subjectspectroscopyen_US
dc.subjectemissionen_US
dc.subjectoriginen_US
dc.subjectkinematicsen_US
dc.subjectstellaren_US
dc.subjectbrighten_US
dc.subjectdisken_US
dc.subjectastronomy & astrophysicsen_US
dc.titleHerschel Extreme Lensing Line Observations: Dynamics Of Two Strongly Lensed Star-Forming Galaxies Near Redshift Z=2en_US
dc.typeArticleen_US
dc.description.departmentAstronomyen_US
dc.identifier.Filename2014_05_herschelextremelensing.pdfen_US
dc.rights.restrictionOpenen_US
dc.identifier.doi10.1088/0004-637x/787/1/8en_US
dc.contributor.utaustinauthorFinkelstein, Keelyen_US
dc.contributor.utaustinauthorFinkelstein, Steven L.en_US
dc.relation.ispartofserialAstrophysical Journalen_US


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