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J/ApJ/786/59      SED fitting results of HETDEX pilot survey      (Hagen+, 2014)

Spectral energy distribution fitting of HETDEX pilot survey Lyα 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)
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(Lyα)>1043 erg/s) Lyα 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<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 Lyα and the UV continuum are always similar, indicating that Lyα 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 arcmin2 of sky at a time, and delivers 5 Å resolution spectra between the wavelengths 3500 Å and 5800 Å. The HPS itself surveyed a total of 169 arcmin2 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 EW0>20 Å, and Lyα 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:
FileName Lrecl Records Explanations
ReadMe 80 . This file table3.dat 75 63 SED Fitting Results
See also: J/A+A/498/13 : Lyman-α 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
Bytes Format Units Label Explanations
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 χ2 value
History: From electronic version of the journal
(End) Prepared by Tiphaine Pouvreau [CDS] 20-Jun-2017
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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