J/AJ/138/1022 Emission-line galaxies from HST PEARS survey (Straughn+, 2009)
Emission-line galaxies from the Hubble Space Telescope Probing Evolution And
Reionization Spectroscopically (PEARS) grism survey.
I. The South fields.
Straughn A.N., Pirzkal N., Meurer G.R., Cohen S.H., Windhorst R.A.,
Malhotra S., Rhoads J., Gardner J.P., Hathi N.P., Jansen R.A., Grogin N.,
Panagia N., di Serego Alighieri S., Gronwall C., Walsh J., Pasquali A.,
Xu C.
<Astron. J., 138, 1022-1031 (2009)>
=2009AJ....138.1022S 2009AJ....138.1022S
ADC_Keywords: Galaxies, optical ; Equivalent widths ; Photometry, HST ;
Redshifts ; Spectroscopy
Keywords: catalogs - galaxies: starburst - techniques: spectroscopic
Abstract:
We present results of a search for emission-line galaxies (ELGs) in
the southern fields of the Hubble Space Telescope Probing Evolution
And Reionization Spectroscopically (PEARS) grism survey. The PEARS
South Fields consist of five Advanced Camera for Surveys pointings
(including the Hubble Ultra Deep Field) with the G800L grism for a
total of 120 orbits, revealing thousands of faint object spectra in
the GOODS-South region of the sky. ELGs are one subset of objects that
are prevalent among the grism spectra. Using a two-dimensional
detection and extraction procedure, we find 320 emission lines
originating from 226 galaxy "knots" within 192 individual galaxies.
Line identification results in 118 new grism-spectroscopic redshifts
for galaxies in the GOODS-South Field. We measure emission-line fluxes
using standard Gaussian fitting techniques. The star formation rates
of the ELGs are presented, as well as a sample of distinct giant
star-forming regions at z∼0.1-0.5 across individual galaxies.
Description:
The HST PEARS grism survey consists of nine ACS Fields observed with
the G800L grism. The G800L grism yields low-resolution (R∼100) optical
spectroscopy between λ=6000-9500Å. S. Malhotra et al. (2009,
in preparation) will describe the PEARS ACS grism observations in
detail. Observations were made during the period 2005 August 8 to 2006
February 17.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 78 320 Global properties of emission-line galaxies
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See also:
B/hst : HST Archived Exposures Catalog (STScI, 2007)
J/A+A/512/A12 : VLT/VIMOS spectroscopy in GOODS-South field (Balestra+, 2010)
J/ApJ/706/158 : Early-type galaxies in PEARS (Ferreras+, 2009)
J/ApJ/695/1591 : Spectrophotometry in PEARS fields (Pirzkal+, 2009)
J/AJ/135/1624 : PEARS emission-line galaxies (Straughn+, 2008)
J/A+A/478/83 : GOODS-South Field VLT/FORS2 redshifts. III. (Vanzella+, 2008)
J/A+A/465/1099 : Redshift catalog of 691 objects in CDFS (Ravikumar+, 2007)
J/ApJ/668/839 : Spectrophotometric redshifts for 1308 HUDF galaxies (Ryan+,
2007)
J/A+A/434/53 : GOODS-South Field redshifts (Vanzella+, 2005)
J/AJ/130/1324 : Faint emission-line galaxies at z≤1.6 (Drozdovsky+, 2005)
J/ApJS/146/209 : STIS emission-line galaxies observations (Teplitz+, 2003)
http://archive.stsci.edu/prepds/pears/ : PEARS home page
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- PEARS PEARS identification number (1)
8 A1 --- n_PEARS [xd] X-ray source (2)
10 I1 --- Knot Knot number
12- 21 F10.7 deg RAdeg Right Ascension in decimal degrees (J2000)
23- 33 F11.7 deg DEdeg Declination in decimal degrees (J2000)
35- 39 F5.2 mag i'mag The HST/ACS i' band AB magnitude
41- 44 I4 0.1nm lambda Wavelength of line in Angstroms
46- 50 F5.1 zW/m2 Flux ? Integrated flux of line
(in 10-18erg/s/cm2 units) (3)
52- 56 F5.1 zW/m2 e_Flux ? Uncertainty in Flux (3)
58- 61 I4 0.1nm EW ? Equivalent width of line in Angstroms (3)
63- 70 A8 --- Line Line identification (4)
72- 76 F5.3 --- z ? Grism redshift (5)
78 A1 --- f_z [1-4] only 1 or 2 lines in spectrum (6)
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Note (1): Objects 68739-96627 are from the HUDF.
Note (2): Flag as follows:
d = CDF-S X-ray sources. From Grogin et al. (2009, in preparation)
matches to PEARS sources;
x = CDF-S X-ray sources with LX{~>}1042erg/s and thus likely AGN.
From Grogin et al. (2009, in preparation).
Note (3): No data indicates measurement was not possible.
Note (4): No data indicates that no suitable line ID was found for the given
input redshift.
Note (5): Re-calculated based on the line identification.
Note (6): Flag as follows:
1 = two lines visible in spectrum, no prior redshift needed;
2 = single line in spectrum, line ID and grism redshift based on prior
spectroscopic redshift;
3 = single line in spectrum, line ID and grism redshift based on prior
photometric redshift;
4 = single line in spectrum, line ID and grism redshift based on prior
spectrophotometric redshift (see Section 3.3).
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History:
From electronic version of the journal
References:
Pirzkal et al. Paper II. 2013ApJ...772...48P 2013ApJ...772...48P Cat. J/ApJ/772/48
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 19-Jan-2012