NOAO >   Observing Info >   Approved Programs >   2015A-0075

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Program Information for 2015A-0075


PI: Robin B Ciardullo, Pennsylvania State U., rbc@astro.psu.edu
Address: Department of Astronomy, 525 Davey Laboratory, University Park, PA 16802 USA

CoI: Karl Gebhardt, U. of Texas, Austin
CoI: John Feldmeier, Youngstown State University
CoI: Caryl Gronwall, Pennsylvania State U.
CoI: Gary J Hill, U. of Texas, Austin
CoI: Sarah Tuttle, U. of Texas, Austin
CoI: Greg Zeimann, Pennsylvania State U.
CoI: Steven Finkelstein, U. of Texas, Austin
CoI: Emily McLinden, U. of Texas, Austin
CoI: Isak Wold, U. of Texas, Austin
CoI: Alex Hagen, Pennsylvania State U.
CoI: Joanna Bridge, Pennsylvania State U.

Title: An Imaging Survey for the Hobby-Eberly Telescope Dark Energy Experiment

Abstract: The Hobby-Eberly Telescope Dark Energy Experiment (HETDEX) will study the evolution of dark energy using the power-spectrum of $\sim 800,000$ Ly$\alpha$ emitting galaxies (LAEs) between .9 < z < 3.5$. This survey, which will begin in 2015, will use a large suite of integral-field units to obtain $R \sim 800$ spectra between 3500~\AA\ and 5500~\AA\ over 400~deg$^2$ of sky (filling factor 1/4.5). Since whatever falls in the instrument's 34,000 \farcs 5$ diameter fibers will be recorded, the project will generate a unique, unbiased spectral database that extends several magnitudes deeper than the SDSS\null. Complementary imaging is crucial for HETDEX, since continuum detections are needed to discriminate high redshift Ly$\alpha$ emitters from foreground [O~II] sources. Unfortunately, HETDEX currently has no guaranteed access to a wide-field imager. We therefore propose to continue our use of the Mosaic camera on the KPNO 4-m telescope to image additional portions of the spring HETDEX field. By using Mosaic to image the spring field now, we can assure quality control, precise self- calibration, and science optimization during the critical initial phases of the survey. We will also add a second epoch to a portion of SDSS that is also $\sim 3$ mag fainter for use by the general astronomical community.

Program Type: Standard/Extragalactic

Scheduled Nights:
Run 1 (2015A):  KP-4m/MOSA -- 10n on Feb 13 - Feb 16 2015, Mar 14 - Mar 18 2015, May 11 - May 13 2015


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2015A-0075

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