J/ApJS/140/143 HST FOS spectral atlas (Bechtold+, 2002)
A uniform analysis of the Lyα forest at z=0-5.
III. Hubble Space Telescope Faint Object Spectrograph spectral atlas.
Bechtold J., Dobrzycki A., Wilden B., Morita M., Scott J., Dobrzycka D.,
Tran K.-V., Aldcroft T.L.
<Astrophys. J. Suppl. Ser. 140, 143 (2002)>
=2002ApJS..140..143B 2002ApJS..140..143B
ADC_Keywords: QSOs ; Spectra, ultraviolet ; Equivalent widths
Mission_Name : HST
Keywords: intergalactic medium - quasars: absorption lines -
ultraviolet: general
Abstract:
We analyzed the absorption line spectra of all quasars observed with
the high-resolution gratings of the Faint Object Spectrograph on board
the Hubble Space Telescope. We examined 788 spectra for 334 quasars
and present line lists and identifications of absorption lines in the
spectra of 271 of them. Analysis of the statistics of the Lyα
and metal absorption systems are presented in companion papers. The
data and several analysis products are available on the authors' Web
site, http://lithops.as.arizona.edu/~jill/QuasarSpectra .
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 160 335 Quasars observed with FOS and G130H, G190H or
G270H Gratings
table2.dat 178 1357 Observation Details
table3.dat 86 10187 Absorption line lists
table4.dat 160 58 Objects which were only observed Pre-Costar
spectra/* . 471 Calibrated spectra
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See also:
http://lithops.as.arizona.edu/~jill/QuasarSpectra : Archive of Quasar Spectra
J/ApJS/130/37 : Analysis of the Lyα forest at z=0-5. I. (Scott+ 2000)
J/ApJ/571/665 : Analysis of the Lyα forest at z=0-5. V. (Scott+ 2002)
Byte-by-byte Description of file: table1.dat table4.dat
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Bytes Format Units Label Explanations
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1- 12 A12 --- [BDW2002] Quasar name
14- 16 A3 --- Stat Status, only for table1.dat (1)
18- 19 I2 h RA1950h Hour of Right Ascension (B1950)
21- 22 I2 min RA1950m Minute of Right Ascension (B1950)
24- 28 F5.2 s RA1950s Second of Right Ascension (B1950)
30 A1 --- DE1950- Sign of the Declination (B1950)
31- 32 I2 deg DE1950d Degree of Declination (B1950)
34- 35 I2 arcmin DE1950m Arcminute of Declination (B1950)
37- 41 F5.2 arcsec DE1950s Arcsecond of Declination (B1950)
43- 44 I2 h RAh Hour of Right Ascension (J2000)
46- 47 I2 min RAm Minute of Right Ascension (J2000)
49- 53 F5.2 s RAs Second of Right Ascension (J2000)
55 A1 --- DE- Sign of the Declination (J2000)
56- 57 I2 deg DEd Degree of Declination (J2000)
59- 60 I2 arcmin DEm Arcminute of Declination (J2000)
62- 66 F5.2 arcsec DEs Arcsecond of Declination (J2000)
68- 73 F6.4 --- z Redshift
75- 94 A20 --- AName Alternate Name
96-116 A21 --- File1 File with spectrum, in "spectra" subdirectory
118-138 A21 --- File2 File with spectrum, in "spectra" subdirectory
140-160 A21 --- File3 File with spectrum, in "spectra" subdirectory
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Note (1): Status:
ND = Data for this object not analyzed - observation failed, the
spectrum contained no signal, data was obtained in
SPECTROPOLARIMETRY mode
BAL = Object is a broad absorption line quasar.
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 12 A12 --- Name Quasar name
14- 15 I2 h RA1950h Hour of Right Ascension (B1950)
17- 18 I2 min RA1950m Minute of Right Ascension (B1950)
20- 24 F5.2 s RA1950s Second of Right Ascension (B1950)
26 A1 --- DE1950- Sign of the Declination (B1950)
27- 28 I2 deg DE1950d Degree of Declination (B1950)
30- 31 I2 arcmin DE1950m Arcminute of Declination (B1950)
33- 37 F5.2 arcsec DE1950s Arcsecond of Declination (B1950)
39- 40 I2 h RAh Hour of Right Ascension (J2000)
42- 43 I2 min RAm Minute of Right Ascension (J2000)
45- 49 F5.2 s RAs Second of Right Ascension (J2000)
51 A1 --- DE- Sign of the Declination (J2000)
52- 53 I2 deg DEd Degree of Declination (J2000)
55- 56 I2 arcmin DEm Arcminute of Declination (J2000)
58- 61 F4.1 arcsec DEs Arcsecond of Declination (J2000)
64- 69 F6.4 --- z ? Redshift
71- 90 A20 --- AName Alternate Name
92- 97 F6.4 mag E(B-V) The E(B-V) value (1)
99-107 A9 --- Dataset Data set name in HST Archive
109-116 A8 --- Aper Aperture code (2)
118-122 A5 --- Grat Grating name
124-125 I2 "month" Obs.M Month of Dataset observation
127-128 I2 d Obs.D Day of Dataset observation
130-133 I4 yr Obs.Y Year of Dataset observation
135-179 A45 --- Com Additional comments (3)
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Note (1): The spectra were corrected for Milky Way reddening, assuming
the E(B-V) listed and the Galactic reddening curve of
Cardelli, Clayton & Mathis (1989ApJ...345..245C 1989ApJ...345..245C).
Note (2): Aperture code:
B-2 = 0.3 arcsec
B-1 = 0.5 arcsec
B-3 = 1.0 arcsec
A-4 = 0.1 arcsec pair
A-3 = 0.25 arcsec pair
A-2 = 0.5 arcsec pair
C-1 = 1.0 arcsec pair
C-2 = 0.25 arcsec pair
A-1 = 4.3 arcsec pair
Note (3): Offsets are offsets in Angstroms applied to the spectra,
derived from interstellar absorption lines. Data sets were combined
into files h270, h270a, etc. when more than one spectrum was produced.
We used the spectra denoted h270, h190, h130, for the absorption line
analysis. Flatfield files are indicated by "flat1, flat2..." which are
listed here:
flat1 = baf13107y.r1h flat2 = baf1310ay.r1h flat3 = baf1310cy.r1h
flat4 = bbj1325iy.r1h flat5 = bbj1325jy.r1h flat6 = c9b1331qy.r1h
flat7 = c9b1332cy.r1h flat8 = c9b1401by.r1h flat9 = c9b1401qy.r1h
flat10 = c9b14090y.r1h flat11 = c9b14099y.r1h flat12 = d1c11470y.r1h
flat13 = d1c11474y.r1h flat14 = d231547hy.r1h flat15 = d231547sy.r1h
flat16 = d241317ky.r1h flat17 = d241317my.r1h flat18 = d2f1332py.r1h
flat19 = d2f1332sy.r1h flat20 = 9ba09578y.r1h flat21 = 9ba0957jy.r1h
Other codes used:
ND = No data, observation failed, or low signal
NA = Spectrum reduced, but no absorption line analysis done
BAL = Object is a broad absorption line quasar
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 12 A12 --- Name Quasar name
14- 21 A8 --- QSO QSO Name, based on B1950 position
23- 28 F6.4 --- z QSO redshift
29- 35 F7.2 0.1nm Lambda Vacuum, heliocentric wavelength
38- 41 F4.2 0.1nm e_Lambda The 1σ uncertainty in Lambda
44- 48 F5.2 0.1nm EW Equivalent width from Gaussian fit
50- 53 F4.2 0.1nm e_EW The 1σ uncertainty in EqWid
55- 60 F6.1 --- SL Significance level in sigma for the detection
of the line
62- 66 F5.2 0.1nm FWHM Full-Width-Half-Maximum
68- 75 F8.5 --- zAbs Redshift of absorption line
77- 86 A10 --- ID Absorption line identification
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Byte-by-byte Description of file: spectra/*
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Bytes Format Units Label Explanations
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1- 7 F7.2 0.1nm lambda Wavelength
9- 18 E10.4 10-18W/m2/nm Flux Calibrated flux, in 10-16erg/cm2/s/Å
20- 29 E10.4 10-18W/m2/nm e_Flux Mean error on Flux
31- 40 E10.4 10-18W/m2/nm Cont Flux in continuum
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History:
From electronic version of the journal
* 27-Dec-2002: the spectra were added, from the files h*.XY at
http://lithops.as.arizona.edu/~jill/QuasarSpectra/HSTFOS/HSTweb/*/h*.XY
References:
Scott et al., Paper I 2000ApJS..130...37S 2000ApJS..130...37S, Cat. J/ApJS/130/37
Scott et al., Paper II 2000ApJS..130...67S 2000ApJS..130...67S
Dobrzycki et al., Paper IV 2002ApJ...571..654D 2002ApJ...571..654D
Scott et al., Paper V 2002ApJ...571..665S 2002ApJ...571..665S, Cat. J/ApJ/571/665
(End) Greg Schwarz [AAS], Patricia Bauer [CDS] 04-Jun-2002