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III/157 AN ULTRAVIOLET ATLAS OF QUASAR AND BLAZAR SPECTRA (Kinney+, 1991)
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An Ultraviolet atlas of Quasar and Blazar Spectra
Kinney A.L., Bohlin R.C., Blades J.C., York D.G.
<Astrophys. J. Suppl. Ser. 75, 645 (1991)>
=1991ApJS...75..645K
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ADC_Keywords: Atlases; Galaxies, Seyfert; QSOs; Spectra, ultraviolet
Abstract:
This atlas contains the ultraviolet spectra of 70nquasars, blazars,
and Seyfert 1 galaxies that were produced by combining over 100 low
resolution spectra from the International Ultraviolet Explorer (IUE)
data archive. The spectra have been extracted with an optimal
algorithm (see Kinney et al. 1991) and co-added to produce spectra
with the best possible signal-to-noise ratio.
Introduction:
The spectra file currently present in this directory are the digital
versions of the spectra that were extracted and co-added for the
Ultraviolet Atlas of Quasar and Blazar Spectra, 1991 (reference above)
The files contain the optimally extracted data which are described in
"Weighted Slit Extraction of Low Dispersion IUE spectra. The optimal
extraction is described in A. L. Kinney, R. C. Bohlin, and J. D. Neill
1991, PASP, 103, 694.
Each co-added spectrum consists of the wavelength, quality flag, gross
flux, background flux, gross flux divided by time, absolutely calibrated
net flux, exposure time, and sigma. Details from the headers which
formerly prefixed each spectrum are in headers.dat. A third file
(objects.dat) is also available, which contains information from Table 1
in the published paper: IAU and alternate designations, redshift (z),
V magnitude, object type, E(B-V), galactic longitude and latitude, and
number of spectra.
The file formats are mostly self explanatory. THE S-AP NOMENCLATURE
INDICATES THE SPECTRA THAT ARE NORMALIZED IN FLUX TO THE L-AP SET
(USUALLY ONE SPECTRUM, see paper for a more detailed explanation) AND
DOES *NOT* MEAN THAT THE SPECTRA WERE OBTAINED IN THE SMALL ENTRANCE
APERTURE. The camera numbers of co-added spectra are listed. Each
co-added spectrum has 8 columns of ASCII numbers with the titles.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
headers.dat 80 403 Information from original headers
qso1.dat 80 1454 The data for 0007+106
qso2.dat 80 1454 The data for 026+129
qso3.dat 80 749 The data for 044+030
qso4.dat 80 749 The data for 119-013
qso5.dat 80 1456 The data for 121-590
qso6.dat 80 749 The data for 215+015
qso7.dat 80 750 The data for 219+428
qso8.dat 80 745 The data for 312-770
qso9.dat 80 1454 The data for 316+413
qso10.dat 80 1454 The data for 405-123
qso11.dat 80 1454 The data for 430+052
qso12.dat 80 1456 The data for 513-002
qso13.dat 80 751 The data for 521-365
qso14.dat 80 749 The data for 537-441
qso15.dat 80 749 The data for 637-752
qso16.dat 80 1456 The data for 735+178
qso17.dat 80 749 The data for 742+318
qso18.dat 80 1454 The data for 754+100
qso19.dat 80 745 The data for 804+761
qso20.dat 80 749 The data for 844+349
qso21.dat 80 1454 The data for 851+202
qso22.dat 80 750 The data for 946+301
qso23.dat 80 1454 The data for 955+326
qso24.dat 80 749 The data for 957+561
qso25.dat 80 749 The data for 004+130
qso26.dat 80 749 The data for 011+250
qso27.dat 80 1454 The data for 101+384
qso28.dat 80 751 The data for 115+080
qso29.dat 80 747 The data for 116+215
qso30.dat 80 748 The data for 119+120
qso31.dat 80 754 The data for 133+704
qso32.dat 80 749 The data for 146-037
qso33.dat 80 752 The data for 148+549
qso34.dat 80 750 The data for 156+295
qso35.dat 80 750 The data for 202+281
qso36.dat 80 1454 The data for 211+143
qso37.dat 80 1452 The data for 219+755
qso38.dat 80 749 The data for 225+317
qso39.dat 80 1456 The data for 226+023
qso40.dat 80 1454 The data for 229+204
qso41.dat 80 749 The data for 241+176
qso42.dat 80 1454 The data for 253-055
qso43.dat 80 1454 The data for 302-102
qso44.dat 80 749 The data for 317+277
qso45.dat 80 1455 The data for 351+640
qso46.dat 80 1454 The data for 411+442
qso47.dat 80 1454 The data for 426+015
qso48.dat 80 1454 The data for 512+370
qso49.dat 80 1454 The data for 553+113
qso50.dat 80 1454 The data for 613+658
qso51.dat 80 750 The data for 630+377
qso52.dat 80 1454 The data for 634+706
qso53.dat 80 750 The data for 641+399
qso54.dat 80 1454 The data for 652+398
qso55.dat 80 750 The data for 700+518
qso56.dat 80 1454 The data for 704+608
qso57.dat 80 746 The data for 721+343
qso58.dat 80 750 The data for 807+698
qso59.dat 80 1455 The data for 821+643
qso60.dat 80 1454 The data for 833+326
qso61.dat 80 1454 The data for 005-489
qso62.dat 80 750 The data for 128-123
qso63.dat 80 1453 The data for 130+099
qso64.dat 80 749 The data for 135-147
qso65.dat 80 1455 The data for 155-304
qso66.dat 80 749 The data for 200+420
qso67.dat 80 749 The data for 223-052
qso68.dat 80 1454 The data for 251-178
qso69.dat 80 747 The data for 308+098
qso70.dat 80 838 The data for 1700_64
objects.dat 56 70 Details on objects included
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Byte-by-byte Description of file: qso*.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- ID Identification
10- 15 F6.1 m-10 LAM Wavelength
17- 22 F6.0 --- EPS Quality flag
23- 31 F9.0 --- GROSS Gross flux
34- 40 F7.0 --- BKG Background flux
45- 50 F6.2 --- NET/TIME Gross-background divided by time
51- 60 E10.3 mW/m2/m-10 ABNET Absolute calibrated net flux
62- 70 F9.2 s TIME Exposure time
74- 80 F7.4 --- SIGMA *(Example: 2.1 = 210 percent)
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Note on SIGMA:
The SIGMA is the RMS scatter among the co-added spectra at each
wavelength.
In qso70.dat, a zero has been added to byte 80 to permit reading this
file with the same format as that for the other files. This zero should be
ignored.
Byte-by-byte Description of file: objects.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- IAU IAU designation
10- 18 A9 --- alt Alternate designation
20- 24 F5.3 km/s z Redshift z
25 A1 --- n_z a=Redshift from Veron+Veron 19827-31
27- 31 F5.2 mag V V magnitude
33- 35 A3 --- type Type QSO (quasar) SY1 (Seyfert
type I) BLZ (blazar)
37- 40 F4.2 mag E E(B-V)
41- 47 F7.2 deg glon galactic longitude
48- 53 F6.2 deg glat galactic latitude
55- 56 I2 --- no Number of spectra in each atlas.
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The file objects.dat was added by the CDS.
The file headers.lst is best read as a straight ASCII file.
Contact Anne Kinney (KINNEY@stsci.edu) for additional information.
Acknowlegements:
The undersigned thanks Ralph Bohlin for providing this version of the
catalog and substantial advice. She also thanks Arthur Davidson for
providing the information on 1700+643.
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(End) Nancy G. Roman [ADC/SSDOO] Sep-01-1995