J/ApJS/146/209 STIS emission-line galaxies observations (Teplitz+, 2003)
Emission-line galaxies in the Space Telescope Imaging Spectrograph Parallel
Survey. I. Observations and data analysis.
Teplitz H.I., Collins N.R., Gardner J.P., Hill R.S., Heap S.R.,
Lindler D.J., Rhodes J., Woodgate B.E.
<Astrophys. J. Suppl. Ser. 146, 209 (2003)>
=2003ApJS..146..209T 2003ApJS..146..209T
ADC_Keywords: Galaxies, spectra ; Redshifts
Mission_Name: HST
Keywords: cosmology: observations - galaxies: evolution -
galaxies: fundamental parameters
Abstract:
In the first 3 years of operation the Space Telescope Imaging
Spectrograph (STIS) obtained slitless spectra of ∼2500 fields in
parallel to prime Hubble Space Telescope (HST) observations as part of
the STIS parallel survey (SPS). The archive contains ∼300 fields at
high Galactic latitude (|b|>30°) with spectroscopic exposure times
greater than 3000s. This sample contains 219 fields (excluding special
regions and requiring a consistent grating angle) observed between
1997 June 6 and 2000 September 21, with a total survey area of
∼160-arcmin2. At this depth, the SPS detects an average of one
emission-line galaxy per three fields. We present the analysis of
these data and the identification of 131 low- to intermediate-redshift
galaxies detected by optical emission lines. The sample contains 78
objects with emission lines that we infer to be redshifted [O II]
λ3727 emission at 0.43<z<1.7. The comoving number density of
these objects is comparable to that of Hα-emitting galaxies in
the NICMOS parallel observations. One quasar and three probable
Seyfert galaxies are detected. Many of the emission-line objects show
morphologies suggestive of mergers or interactions.
The reduced data are available upon request from the authors.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table2.dat 103 22 NED Objects in the Deep SPS Fields
table3.dat 134 131 Detected Objects
table4.dat 58 248 Detected Emission Lines
--------------------------------------------------------------------------------
See also:
J/AJ/119/486 : HDF-S: STIS imaging (Gardner+, 2000)
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 I2 h RAh Right ascension (J2000.0) (hours)
4- 5 I2 min RAm Right ascension (J2000.0) (minutes)
7- 10 F4.1 s RAs Right ascension (J2000.0) (seconds)
12 A1 --- DE- Declination (J2000.0) (sign)
13- 14 I2 deg DEd Declination (J2000.0) (degrees)
16- 17 I2 arcmin DEm Declination (J2000.0) (minutes)
19- 22 F4.1 arcsec DEs Declination (J2000.0) (seconds)
24- 95 A72 --- NED NED object designations
97 A1 --- n_NED [abcd] Notes (1)
99-103 A5 --- r_NED References (2)
--------------------------------------------------------------------------------
Note (1): Notes are as follows:
a: This field is a few arcminutes from the center of the Chandra
Deep Field South (Giacconi et al., 2002, Cat. J/ApJS/139/369).
b: This field was included in the Hu, McMahon, & Egami
(1996ApJ...459L..53H 1996ApJ...459L..53H) Lyα search for quasar companions.
c: This field, parallel to the Hubble Deep Field North
(Williams et al., 1996, Cat. J/AJ/112/1335), was analyzed
independently by Chen et al. (1999Natur.398..586C 1999Natur.398..586C,
2000Natur.408..562C 2000Natur.408..562C) and Stern et al. (2000Natur.408..560S 2000Natur.408..560S).
d: This field contains APMUKS(BJ) B130842.46-010229.8,
B130844.25-010243.7 (z=0.209498),
[MD2000] J131117.984-011812.47, [MD2000] J131118.783-011843.00,
and [MD2000] J131119.214-011830.18.
Note (2): References are numbered as follows:
1: Maddox et al., 1990MNRAS.243..692M 1990MNRAS.243..692M
2: Gruppioni et al., 1997MNRAS.286..470G 1997MNRAS.286..470G
3: Cristiani et al., 2000A&A...359..489C 2000A&A...359..489C
4: Oort, 1987, Cat. J/A+AS/71/221
5: Becker, White & Helfand, 1995ApJ...450..559B 1995ApJ...450..559B
6: Dressler & Gunn, 1992, Cat. J/ApJS/78/1
7: Martin et al., 2000ApJ...543...97M 2000ApJ...543...97M
8: Storrie-Lombardi et al., 1996ApJ...468..121S 1996ApJ...468..121S
9: Godwin, Metcalfe & Peach, 1983MNRAS.202..113G 1983MNRAS.202..113G, Cat. VII/42
10: Infante, Pritchet & Hertling, 1995JAD.....1....2I 1995JAD.....1....2I, Cat. VII/208
11: Margoniner & De Carvalho, 2000, Cat. J/AJ/119/1562
12: Ellingson et al., 1997, J/ApJS/113/1
13: De Carvalho et al., 1997, J/ApJS/110/1
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 A3 --- --- [SPS]
5- 23 A19 --- STIS-PS Object name (JHHMMSS.ss+DDMMSS.s)
25 A1 --- n_STIS-PS Individual notes (1)
27- 28 I2 h RAh Hour of Right Ascension (J2000)
30- 31 I2 min RAm Minute of Right Ascension (J2000)
33- 37 F5.2 s RAs Second of Right Ascension (J2000)
39 A1 --- DE- Sign of the Declination (J2000)
40- 41 I2 deg DEd Degree of Declination (J2000)
43- 44 I2 arcmin DEm Arcminute of Declination (J2000)
46- 49 F4.1 arcsec DEs Arcsecond of Declination (J2000)
51- 55 F5.3 --- z Redshift (2)
57- 59 F3.1 --- f_z Redshift flag (3)
61- 65 F5.2 mag 50CCD Photometry for the filterless direct image (4)
67- 70 F4.2 mag e_50CCD Uncertainty in 50CCD (4)
72- 75 F4.2 arcsec FWHM Galaxy size (Full-Width at Half-Maximum)
77- 79 F3.1 --- a/b Axial ratio
81- 83 I3 deg PA [-90/90] Position angle
85- 88 I4 0.1nm Lamdal Lower value of wavelength range
89 A1 --- --- [-]
90- 94 I5 0.1nm Lamdau Upper value of wavelength range
96-133 A38 --- Lines Strong lines detected
--------------------------------------------------------------------------------
Note (1): The notes are numbered as follows:
4: SPS J030221.47+001150.6 is detected in the J030220.8+001153.9
field, while SPS J030210.18+001140.0 is detected in the
J030210.9+001155.3 field.
5: SPS J095615.40+694535.3 is detected in the J095618.3+694537.0
field, while SPS J095628.10+694551.9 is detected in the
J095623.8+694540.6 field.
6: This object is detected in both the J1213008+121420.7 and
J1213013+121418.3 fields.
Note (2): The redshift uncertainty is σz∼0.004.
Note (3): Redshift flags:
0 = flux is in small knots, so we do not measure an integrated flux
for lines;
1 = single line;
1.5 = single line, inferred to be [OII], but with redshifted Hβ,
[OIII] falling in region of low sensitivity;
2 = single line, inferred to be [OII], but with redshifted Hβ,
[OIII] falling in region of good sensitivity;
3 = single line with good reason to infer line (see text);
4 = multiple lines.
Note (4): Given on the STMAG system.
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table4.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 A3 --- --- [SPS]
5- 23 A19 --- STIS-PS Object name (JHHMMSS.ss+DDMMSS.s)
25- 35 A11 --- Line Line identification
37- 42 F6.3 10-16mW/m2 Flux Measured flux Line flux in units
of 10-16 erg/cm2/s
44- 47 F4.1 --- SNR Line flux signal-to-noise ratio
49- 52 I4 0.1nm EW ? Observed line equivalent width in Angstroems
54- 57 F4.1 --- CSNR ? Approximate continuum signal-to-noise
ratio (1)
--------------------------------------------------------------------------------
Note (1): In a two pixel resolution element. A low signal-to-noise in the
continuum measurements demonstrates the large uncertainty in the EqWid
measurements.
--------------------------------------------------------------------------------
History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Bauer [CDS] 16-Jun-2003