SIMBAD references

2011ApJS..192....5A - Astrophys. J., Suppl. Ser., 192, 5 (2011/January-0)

The HETDEX pilot survey. I. Survey design, performance, and catalog of emission-line galaxies.

ADAMS J.J., BLANC G.A., HILL G.J., GEBHARDT K., DRORY N., HAO L., BENDER R., BYUN J., CIARDULLO R., CORNELL M.E., FINKELSTEIN S.L., FRY A., GAWISER E., GRONWALL C., HOPP U., JEONG D., KELZ A., KELZENBERG R., KOMATSU E., MacQUEEN P.J., MURPHY J., ODOMS P.S., ROTH M., SCHNEIDER D.P., TUFTS J.R. and WILKINSON C.P.

Abstract (from CDS):

We present a catalog of emission-line galaxies selected solely by their emission-line fluxes using a wide-field integral field spectrograph. This work is partially motivated as a pilot survey for the upcoming Hobby-Eberly Telescope Dark Energy Experiment. We describe the observations, reductions, detections, redshift classifications, line fluxes, and counterpart information for 397 emission-line galaxies detected over 169 {squ}' with a 3500-5800 Å bandpass under 5 Å full-width-half-maximum (FWHM) spectral resolution. The survey's best sensitivity for unresolved objects under photometric conditions is between 4 and 20x 10–17 erg/s/cm2 depending on the wavelength, and Lyα luminosities between 3x1042 and 6x1042 erg/s are detectable. This survey method complements narrowband and color-selection techniques in the search of high-redshift galaxies with its different selection properties and large volume probed. The four survey fields within the COSMOS, GOODS-N, MUNICS, and XMM-LSS areas are rich with existing, complementary data. We find 105 galaxies via their high-redshift Lyα emission at 1.9 < z < 3.8, and the majority of the remainder objects are low-redshift [O II]3727 emitters at z < 0.56. The classification between low- and high-redshift objects depends on rest-frame equivalent width (EW), as well as other indicators, where available. Based on matches to X-ray catalogs, the active galactic nuclei fraction among the Lyα emitters is 6%. We also analyze the survey's completeness and contamination properties through simulations. We find five high-z, highly significant, resolved objects with FWHM sizes >44 {squ}' which appear to be extended Lyα nebulae. We also find three high-z objects with rest-frame Lyα EW above the level believed to be achievable with normal star formation, EW0>240 Å. Future papers will investigate the physical properties of this sample.

Abstract Copyright:

Journal keyword(s): cosmology: observations - galaxies: evolution - galaxies: formation - galaxies: high-redshift

VizieR on-line data: <Available at CDS (J/ApJS/192/5): table2.dat table3.dat table4.dat>

Nomenclature: Tables 3-4: HPS NNN (Nos 1-479).

Simbad objects: 401

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