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J/ApJ/705/639        Sizes of Lyman alpha emitters at z=3.1        (Bond+, 2009)

Sizes of Lyα-emitting galaxies and their rest-frame ultraviolet components at z = 3.1. Bond N.A., Gawiser E., Gronwall C., Ciardullo R., Altmann M., Schawinski K. <Astrophys. J., 705, 639-649 (2009)> =2009ApJ...705..639B
ADC_Keywords: Galaxies, photometry ; Surveys Keywords: cosmology: observations - galaxies: formation - galaxies: high-redshift - galaxies: structure Abstract: We present a rest-frame ultraviolet analysis of ∼120 z∼3.1 Lyman Alpha Emitters (LAEs) in the Extended Chandra Deep Field South. Using Hubble Space Telescope (HST) images taken as part of the Galaxy Evolution From Morphology and SEDS (GEMS) survey, Great Observatories Origins Deep Survey (GOODS), and Hubble Ultradeep Field surveys, we analyze the sizes of LAEs, as well as the spatial distribution of their components, which are defined as distinct clumps of UV-continuum emission. We set an upper limit of ∼1kpc (∼0.1") on the rms offset between the centroids of the continuum and Lyα emission. Most of the multi-component LAEs identified in shallow frames become connected in deeper images, suggesting that the majority of the rest-UV "clumps" are individual star-forming regions within a single system. Description: This paper complements the Gronwall et al. (2007, Cat. J/ApJ/667/79) and Gawiser et al. (2007ApJ...671..278G) studies of the MUSYC z=3.1 LAE sample by measuring the rest-UV size and component distributions using high-resolution V-band images, taken by the Advanced Camera for Surveys (ACS) and obtained as part of the Galaxy Evolution from Morphology and SEDs survey (GEMS; Rix et al. 2004ApJS..152..163R), Great Observatories Origins Deep Survey (GOODS; Giavalisco et al. 2004, Cat. II/261), and Hubble Ultradeep Field survey (HUDF; Beckwith et al. 2006, Cat. J/AJ/132/1729). File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 56 128 LAE photometric properties in GEMS (Galaxy Evolution from Morphology and SEDs) table3.dat 75 128 LAE component photometric properties
See also: II/261 : GOODS initial results (Giavalisco+, 2004) J/A+A/498/13 : Lyman-α emitters from redshifts z∼2-3 (Nilsson+, 2009) J/ApJS/172/615 : GALFIT result for GEMS galaxies (Haussler+, 2007) J/ApJ/667/79 : Lyα emission-line galaxies at z=3.1 (Gronwall+, 2007) J/AJ/132/1729 : Hubble Ultra Deep Field BVI-dropout sources (Beckwith+, 2006) J/PASJ/57/165 : Lyα emitters in the SUBARU Deep Field (Taniguchi+, 2005) J/PASJ/57/881 : Imaging of high-redshift Lyman alpha emitters (Yamada+, 2005) Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 3 I3 --- [GCH2007] [4/162] Index number (1) 5- 9 A5 --- Survey Survey name (GEMS, GOODS or HUDF) 11 I1 h RAh Hour of Right Ascension (J2000) (2) 13- 14 I2 min RAm Minute of Right Ascension (J2000) (2) 16- 21 F6.3 s RAs Second of Right Ascension (J2000) (2) 23 A1 --- DE- Sign of the Declination (J2000)(2) 24- 25 I2 deg DEd Degree of Declination (J2000) (2) 27- 28 I2 arcmin DEm Arcminute of Declination (J2000) (2) 30- 35 F6.3 arcsec DEs Arcsecond of Declination (J2000) (2) 37- 41 F5.2 mag Vmag ? PHOT-computed V-band AB magnitude 43- 46 F4.2 mag e_Vmag ? Uncertainty in Vmag 48- 51 F4.2 arcsec dc ? ACS/ground-based centroid distance 53- 56 F4.2 arcsec re ? PHOT-computed half-light radius (3)
Note (1): From Table 2 in Gronwall et al. 2007, Cat. J/ApJ/667/79 Note (2): Position of ACS centroid (set to ground-based position when there are no SExtractor detections). Note (3): Not reported for LAEs without SExtractor detections.
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 3 I3 --- [GCH2007] [4/162] Index number 5 I1 --- m_[GCH2007] Component number 7- 11 A5 --- Survey Survey name (GEMS, GOODS or HUDF) 13 I1 h RAh Hour of Right Ascension (J2000) 15- 16 I2 min RAm Minute of Right Ascension (J2000) 18- 23 F6.3 s RAs Second of Right Ascension (J2000) 25 A1 --- DE- Sign of the Declination (J2000) 26- 27 I2 deg DEd Degree of Declination (J2000) 29- 30 I2 arcmin DEm Arcminute of Declination (J2000) 32- 37 F6.3 arcsec DEs Arcsecond of Declination (J2000) 39- 43 F5.2 mag Vmag SExtractor computed V-band AB magnitude 45- 48 F4.2 mag e_Vmag Uncertainty in Vmag 50- 53 F4.2 arcsec dc Distance from ground-based Lyα position 55- 58 F4.2 --- b/a SExtractor-computed isophotal axis ratio 60- 65 F6.2 deg theta SExtractor-computed isophotal position angle 67- 70 F4.2 arcsec reSE SExtractor-computed half-light radius 72- 75 F4.2 Msun/yr SFR UV-derived star formation rate
History: From electronic version of the journal References: Gronwall et al. Paper II. 2011ApJ...743....9G Cat. J/ApJ/743/9
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 02-Dec-2011
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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