A WFC3 Grism Emission Line Redshift Catalog In The GOODS-South Field

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dc.contributor.utaustinauthorFinkelstein, Steven L.en_US
dc.creatorMorris, Aaron M.en_US
dc.creatorKocevski, Dale D.en_US
dc.creatorTrump, Jonathan R.en_US
dc.creatorWeiner, Benjamin J.en_US
dc.creatorHathi, Nimish P.en_US
dc.creatorBarro, Guillermoen_US
dc.creatorDahlen, Tomasen_US
dc.creatorFaber, Sandra M.en_US
dc.creatorFinkelstein, Steven L.en_US
dc.creatorFontana, Adrianoen_US
dc.creatorFerguson, Henry C.en_US
dc.creatorGrogin, Norman A.en_US
dc.creatorGrutzbauch, Ruthen_US
dc.creatorGuo, Yicheng C.en_US
dc.creatorHsu, Li-Tingen_US
dc.creatorKoekemoer, Anton M.en_US
dc.creatorKoo, David C.en_US
dc.creatorMobasher, Bahramen_US
dc.creatorPforr, Janineen_US
dc.creatorSalvato, Maraen_US
dc.creatorWiklind, Tommyen_US
dc.creatorWuyts, Stijnen_US
dc.date.accessioned2016-04-22T19:47:37Z
dc.date.available2016-04-22T19:47:37Z
dc.date.issued2015-06en
dc.description.abstractWe combine Hubble Space Telescope (HST)/Wide Field Camera3 (WFC3) imaging and G141 grism observations from the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey (CANDELS) and 3D-HST surveys to produce a catalog of grism spectroscopic redshifts for galaxies in the CANDELS/GOODS-South field. The WFC3/G141 grism spectra cover a wavelength range of 1.1 <= lambda <= 1.7 mu m with a resolving power of R similar to 130 for point sources, thus providing rest-frame optical spectra for galaxies out to z similar to 3.5. The catalog is selected in the H-band (F160W) and includes both galaxies with and without previously published spectroscopic redshifts. Grism spectra are extracted for all H-band detected galaxies with H <= 24 and a CANDELS photometric redshift z(phot) >= 0.6. The resulting spectra are visually inspected to identify emission lines, and redshifts are determined using cross-correlation with empirical spectral templates. To establish the accuracy of our redshifts, we compare our results against high-quality spectroscopic redshifts from the literature. Using a sample of 411 control galaxies, this analysis yields a precision of sigma(NMAD) = 0.0028 for the grism-derived redshifts, which is consistent with the accuracy reported by the 3D-HST team. Our final catalog covers an area of 153 arcmin(2) and contains 1019 redshifts for galaxies in GOODS-S. Roughly 60% (608/1019) of these redshifts are for galaxies with no previously published spectroscopic redshift. These new redshifts span a range of 0.677 <= z <= 3.456 and have a median redshift of z = 1.282. The catalog contains a total of 234 new redshifts for galaxies at z > 1.5. In addition, we present 20 galaxy pair candidates identified for the first time using the grism redshifts in our catalog, including four new galaxy pairs at z similar to 2, nearly doubling the number of such pairs previously identified.en_US
dc.description.departmentAstronomyen_US
dc.description.sponsorshipNASA NAS5-26555en_US
dc.description.sponsorshipNSF 0808133en_US
dc.description.sponsorshipHST-AR 12822.03Aen_US
dc.identifierdoi:10.15781/T2XF7K
dc.identifier.citationMorris, Aaron M., Dale D. Kocevski, Jonathan R. Trump, Benjamin J. Weiner, Nimish P. Hathi, Guillermo Barro, Tomas Dahlen et al. >A WFC3 Grism Emission Line Redshift Catalog in the GOODS-South Field.> The Astronomical Journal, Vol. 149, No. 6 (Jun., 2015): 178.en_US
dc.identifier.doi10.1088/0004-6256/149/6/178en_US
dc.identifier.issn0004-6256en_US
dc.identifier.urihttp://hdl.handle.net/2152/34502
dc.language.isoEnglishen_US
dc.relation.ispartofserialAstronomical Journalen_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.subjectcatalogsen_US
dc.subjectgalaxies: high-redshiften_US
dc.subjecttechniques: spectroscopicen_US
dc.subjecthubble-space-telescopeen_US
dc.subjectorigins deep surveyen_US
dc.subjectextragalactic legacyen_US
dc.subjectsurveyen_US
dc.subjectstar-forming galaxiesen_US
dc.subjectgreater-than 1en_US
dc.subjectphotometric redshiften_US
dc.subjectoptical spectroscopyen_US
dc.subjectquiescent galaxiesen_US
dc.subjectnuclear activityen_US
dc.subjectdataen_US
dc.subjectreductionen_US
dc.subjectastronomy & astrophysicsen_US
dc.titleA WFC3 Grism Emission Line Redshift Catalog In The GOODS-South Fielden_US
dc.typeArticleen_US

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