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  • More than 1000 Redshifts for Galaxies at \(0.3<z<2.5\) in the WFC3 Infrared Spectroscopic Parallels (WISP) Survey

    Abstract

    The redshifts and emission-line strengths for XXXX Galaxies in 29 fields of the WFC3 Infrared Spectroscopic Parallels (WISP) Survey are presented.

    Introduction\label{sec:intro}

    The redshift regime \(1<z<2.5\) encompasses the peak in the star formation history of the universe (e.g. Madau et al., 2014, and references therein). By \(z\sim1\), all of the strong rest-frame-optical emission lines for star-forming galaxies (SFG) and active galactic nuclei (AGN) are redshifted into the near-infrared (NIR), which has been been very difficult to obtain from the ground. Large rest-frame-optical spectroscopic samples of galaxies in this redshift range are impeded due to the strong NIR atmospheric absorption and emission, the poor sensitivity of NIR spectrographs,and the paucity of NIR multi-object spectrographs. With the new age of multi-object NIR spectrographs on 8–10m-class telescopes, larger spectroscopic samples are beginning to be assembled, although they are limited to redshift ranges where the strong rest-frame-optical lines fall in relatively transparent atmospheric windows.

    A complementary approach to building up rest-frame-optical spectroscopic samples of galaxies at \(z>1\) is to use a spectrograph that is above the Earth’s atmosphere. This was successfully carried out in the past with the grisms on the Hubble Space Telescope (HST) Near Infrared Camera and Multi-Object Spectrometer (NICMOS, Thompson et al., 1998) (e.g. McCarthy et al., 1999) and Advanced Camera for Surveys (ACS, Ford et al., 1998) (e.g. Straughn et al., 2009; Pirzkal et al., 2013). The installation of Wide Field Camera 3 (WFC3) in 2009 included two infrared grisms, each of which disperse the full \(2^{\prime}\times2^{\prime}\) WFC3 field of view