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J/ApJ/817/79         Properties of emission-line galaxies         (Hagen+, 2016)

HST emission line galaxies at z ∼ 2: comparing physical properties of Lyman alpha and optical emission line selected galaxies. Hagen A., Zeimann G.R., Behrens C., Ciardullo R., Grasshorn Gebhardt H.S., Gronwall C., Bridge J.S., Fox D.B., Schneider D.P., Trump J.R., Blanc G.A., Chiang Y.-K., Chonis T.S., Finkelstein S.L., Hill G.J., Jogee S., Gawiser E. <Astrophys. J., 817, 79 (2016)> =2016ApJ...817...79H (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies, optical ; Morphology ; Equivalent widths Keywords: cosmology: observations - galaxies: evolution - galaxies: high-redshift Abstract: We compare the physical and morphological properties of z∼2 Lyα emitting galaxies (LAEs) identified in the HETDEX Pilot Survey and narrow band studies with those of z∼2 optical emission line selected galaxies (oELGs) identified via HST WFC3 infrared grism spectroscopy. Both sets of galaxies extend over the same range in stellar mass (7.5<logM/M<10.5), size (0.5<R<3.0kpc), and star formation rate (∼1<SFR<100M/yr). Remarkably, a comparison of the most commonly used physical and morphological parameters - stellar mass, half-light radius, UV slope, SFR, ellipticity, nearest neighbor distance, star formation surface density, specific SFR, [OIII] luminosity, and [OIII] equivalent width - reveals no statistically significant differences between the populations. Description: To determine the photometric properties of both our LAEs and the emission-line selected comparison sample, we took advantage of the multi-wavelength catalog of Skelton et al. (2014ApJS..214...24S), which extends over the CANDELS fields of GOODS-S, GOODS-N, and COSMOS (Grogin et al. 2011ApJS..197...35G). File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 126 28 Lyα emitting galaxy (LAE) physical and morphological properties table2.dat 126 223 Optical emission line galaxy (oELG) physical and morphological properties
See also: II/261 : GOODS initial results (Giavalisco+, 2004) J/ApJS/214/24 : 3D-HST+CANDELS catalog (Skelton+, 2014) J/ApJ/791/18 : Galaxy samples rest-frame ultraviolet structure (Bond+, 2014) J/ApJ/796/64 : Hβ and Lyα em. galaxies at z∼2 (Ciardullo+, 2014) J/ApJ/786/59 : SED fitting results of HETDEX pilot survey (Hagen+, 2014) J/A+A/561/A89 : Optical spectroscopy of 24 Ly-alpha emitters (Atek+, 2014) J/ApJ/753/95 : LAE galaxies in the ECDF-S at z∼2.1 and z∼3.1 (Bond+, 2012) J/ApJ/744/110 : LAE galaxies between 2.1=<z≤3.1 (Ciardullo+, 2012) J/A+A/545/A141 : UV selected sources in the GOODS-S field (Buat+, 2012) J/ApJS/192/5 : Em.-line galaxies from HETDEX pilot survey (Adams+, 2011) J/ApJ/736/31 : HETDEX pilot survey. II. 1.9<z<3.8 LAEs (Blanc+, 2011) J/ApJ/738/136 : LAEs between 0.19<z<1.25 with GALEX grism (Cowie+, 2011) J/ApJ/743/9 : z=3.1 LAEs morphological properties (Gronwall+, 2011) J/A+A/531/A12 : Grid of Lya radiation transfer models (Schaerer+, 2011) J/ApJ/711/928 : Low-redshift Lyα galaxies from GALEX (Cowie+, 2010) J/ApJ/706/1364 : SINS survey of high-z galaxies (Forster Schreiber+, 2009) J/ApJ/705/639 : Sizes of Lyman alpha emitters at z=3.1 (Bond+, 2009) J/ApJ/680/1072 : Lyα-emitting galaxies at 0.2<z<0.35 (Deharveng+, 2008) J/ApJ/667/79 : Lyα emission-line galaxies at z=3.1 (Gronwall+, 2007) J/ApJ/657/738 : SDF galaxies multi-photometry (Ly+, 2007) J/ApJ/647/128 : Hα observations of UV-selected galaxies (Erb, 2006) J/ApJ/642/L13 : ECDFS MUSYC galaxies UBVRIzNB5000 photometry (Gawiser+, 2006) Byte-by-byte Description of file: table[12].dat
Bytes Format Units Label Explanations
1- 9 F9.5 deg RAdeg [53.0/189.5] Right Ascension (J2000) 11- 19 F9.5 deg DEdeg [-28.0/62.4] Declination (J2000) 21- 25 F5.2 [Msun] logM [7.32/10.7] Log of stellar mass (1) 27- 30 F4.2 [Msun] e_logM [0/0.39] Error in logM 32- 35 F4.2 kpc rh [0/3.73]? Half light radius (2) 37- 40 F4.2 kpc e_rh [0/1.02]? Error in rh 42- 46 F5.2 --- beta [-2.91/1.58] UV spectral slope β (3) 48- 51 F4.2 --- e_beta [0.01/1.34] Error in beta 53- 57 F5.2 [solMass/yr] lSFRc [-0.67/3.31] Log of the star formation rate (4) 59- 62 F4.2 [solMass/yr] e_lSFRc [0.01/1.26] Error in lSFRc 64- 67 F4.2 --- Ell [0.01/1]? Ellipticity 69- 72 F4.2 --- e_Ell [0/0.16]? Error in Ell 74- 78 F5.2 kpc Sep [0.88/51.13]? Nearest neighbor (5) 80- 85 F6.2 solMass/yr/kpc2 SFR [0.04/872.21]? Star formation rate surface density (dust corrected) 87- 93 F7.2 solMass/yr/kpc2 e_SFR [0.02/1331.72]? Error in SFR 95- 99 F5.2 [yr-1] lsSFR [-9.99/-5.67] Log of specific (dust corrected) star formation rate 101-104 F4.2 [yr-1] e_lsSFR [0.01/1.27] Error in lsSFR 106-111 F6.2 10+34W L[OIII] [-7.5/620.0]? [OIII] luminosity (6) 113-118 F6.2 10+34W e_L[OIII] [0.5/147.4]? Error in L[OIII] 120-122 I3 0.1nm EW[OIII] [-13/751]? [OIII] equivalent width, in the rest frame (7) 124-126 I3 0.1nm e_EW[OIII] [-10/160]? Error in EW[OIII]
Note (1): The log10 stellar mass in M_☉, assuming a Salpeter IMF, constant star formation rate, a Calzetti (2001PASP..113.1449C) extinction law, and CB07 stellar population models. Note (2): The half-light radius, measured in the rest-frame NUV using HST F814W images. Note (3): The UV spectral slope, as parametrized by: L(λ)∝λβ0_^ where L(λ) is the system's luminosity density (see Section 3.1). Note (4): The log10 star formation rate, corrected using the Calzetti (2001PASP..113.1449C) extinction law with reddening measured from β. Note (5): The projected nearest neighbor distance, using the redshift of the galaxy in question. Note (6): The [OIII] luminosity, corrected for extinction using the Calzetti (2001PASP..113.1449C) law. Note (7): The [OIII] equivalent width is not dust corrected.
History: From electronic version of the journal
(End) Marianne Brouty [CDS] 27-Oct-2017
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