J/ApJ/786/59      SED fitting results of HETDEX pilot survey      (Hagen+, 2014)
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Spectral energy distribution fitting of HETDEX pilot survey Ly{alpha} emitters
in COSMOS and GOODS-N.
    Hagen A., Ciardullo R., Gronwall C., Acquaviva V., Bridge J., Zeimann G.R.,
    Blanc G.A., Bond N.A., Finkelstein S.L., Song M., Gawiser E., Fox D.B.,
    Gebhardt H., Malz A.I., Schneider D.P., Drory N., Gebhardt K., Hill G.J.
   <Astrophys. J., 786, 59 (2014)>
   =2014ApJ...786...59H    (SIMBAD/NED BibCode)
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ADC_Keywords: Energy distributions ; Galaxy catalogs ; Redshifts ; Reddening ;
              Photometry, hydrogen-line ; Surveys
Keywords: cosmology: observations - galaxies: evolution -
          galaxies: high-redshift - galaxies: starburst

Abstract:
    We use broadband photometry extending from the rest-frame UV to the
    near-IR to fit the individual spectral energy distributions of 63
    bright (L(Ly{alpha})>10^43^ erg/s) Ly{alpha} emitting galaxies
    (LAEs) in the redshift range 1.9<z<3.6. We find that these LAEs
    are quite heterogeneous, with stellar masses that span over three
    orders of magnitude, from 7.5<log M/M_{sun}_<10.5. Moreover, although
    most LAEs have small amounts of extinction, some high-mass objects
    have stellar reddenings as large as E(B-V)~0.4. Interestingly, in
    dusty objects the optical depths for Ly{alpha} and the UV continuum
    are always similar, indicating that Ly{alpha} photons are not
    undergoing many scatters before escaping their galaxy. In contrast,
    the ratio of optical depths in low-reddening systems can vary widely,
    illustrating the diverse nature of the systems. Finally, we show that
    in the star-formation-rate-log-mass diagram, our LAEs fall above the
    "main-sequence" defined by z~3 continuum selected star-forming
    galaxies. In this respect, they are similar to submillimeter-selected
    galaxies, although most LAEs have much lower mass.

Description:
    The LAEs chosen for study were discovered with the George & Cynthia
    Mitchell Spectrograph (previously known as VIRUS-P; Hill et al.
    2008SPIE.7014E..70H) on the 2.7 m Harlan J. Smith Telescope during the
    HPS (Adams et al. 2011, J/ApJS/192/5). This integral-field instrument,
    which employs an array of 246 4.2" diameter fibers, covers ~3 arcmin^2^
    of sky at a time, and delivers 5 {AA} resolution spectra between the
    wavelengths 3500 {AA} and 5800 {AA}. The HPS itself surveyed a total
    of 169 arcmin^2^ in the COSMOS (Scoville et al. 2007ApJS..172....1S),
    GOODS-N (Giavalisco et al. 2004ApJ...600L..93G), MUNICS-S2 (Drory et al.
    2001MNRAS.325..550D), and XMM-LSS (Pierre et al.  2004JCAP....9...11P)
    fields. The final HPS catalog consists of coordinates, redshifts,
    R-band magnitudes, line fluxes, and equivalent widths for 397 emission-line
    selected galaxies. Ninty-nine of these sources are non X-ray emitting
    LAEs with 1.9<z<3.8, rest-frame equivalent widths EW_0_>20 {AA}, and
    Ly{alpha} luminosities between 2.6x1042 and 1.1x1044 erg/s (Adams et al.
    2011, J/ApJS/192/5; Blanc et al. 2011, J/ApJ/736/31). A total of 74 of
    these HPS LAEs lie in the GOODS-N and COSMOS fields, where deep HST
    data is available.

File Summary:
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 FileName      Lrecl  Records   Explanations
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ReadMe            80        .   This file
table3.dat        75       63   SED Fitting Results
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See also:
 J/A+A/498/13  : Lyman-{alpha} emitters from redshifts z~2-3 (Nilsson+, 2009)
 J/ApJ/736/31  : HETDEX pilot survey. II. 1.9<z<3.8 LAEs (Blanc+, 2011)
 J/ApJS/192/5  : Emission-line galaxies from HETDEX pilot survey (Adams+, 2011)
 J/ApJ/744/110 : LAE galaxies between 2.1=<z<=3.1 (Ciardullo+, 2012)

Byte-by-byte Description of file: table3.dat
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   Bytes Format Units    Label   Explanations
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   1-  3  A3    ---      ---     [HPS]
   4-  6  I3    ---      HPS     [150/474] Galaxy identifier
                                  (<HPS NNN> in Simbad)
   8- 11  F4.2  ---      z       Redshift
  13- 17  F5.2  [Msun]   logM*   Log of stellar mass
  19- 22  F4.2  [Msun] E_logM*   Upper limit uncertainty in logM*
  24- 27  F4.2  [Msun] e_logM*   Lower limit uncertainty in logM*
  29- 32  F4.2  [yr]     logAge  Log of Age
  34- 37  F4.2  [yr]   E_logAge  Upper limit uncertainty in logAge
  39- 42  F4.2  [yr]   e_logAge  Lower limit uncertainty in logAge
  44- 48  F5.3  ---      E(B-V)  Stellar reddening
  50- 54  F5.3  ---    E_E(B-V)  Upper limit uncertainty in E(B-V)
  56- 60  F5.3  ---    e_E(B-V)  Lower limit uncertainty in E(B-V)
  62- 65  F4.2  kpc      Rad     Half-light radius
  67- 70  F4.2  kpc    e_Rad     Error in Rad
  72- 75  F4.1  ---      chi2    Reduced {chi}^2^ value
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History:
    From electronic version of the journal

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(End)                   Prepared by Tiphaine Pouvreau [CDS]          20-Jun-2017