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VII/47 Seyfert Galaxies (Weedman 1977-1978)
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Seyfert Galaxies
Weedman D.W.
<Ann. Rev. Astron. Astrophys., 15, 69 (1977)>
=1977ARA&A..15...69W
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ADC_Keywords: Galaxies, Seyfert; Galaxy catalogs
Description:
This catalog is a combination of two Seyfert galaxy lists published by
Weedman in 1977 and 1978. This version includes 121 objects, 88 from the
first published list and 33 from the second. The lists are merged and
sorted by right ascension. The criteria for objects to be included are
the same for both lists and are as follows: broad emission lines,
non-stellar (nebulous) appearance on Palomar Sky Survey prints
("This means in practice that it must have a diameter greater than about
7" for the nebulosity around the nucleus to be visible."), and Seyfert
designation in a published reference (no unpublished Seyferts included).
Also, the lists omit "galaxies referred to by spectroscopists as
probably or possibly being Seyferts unless UBV photometry also showed
the characteristic Seyfert colors." (Weedman's italics.) Also, quasars
are excluded. In the introduction to the second list, Weedman remarks
that four galaxies from the first list were not confirmed spectroscopically
as Seyfert (Phillips M.M., and Osterbrock D.E., 1977. Publ. Astron. Soc.
Pacific, 89, 251) and "should be deleted..." However, these have been
retained in the machine-readable version in order to conform to the
lists as published. These galaxies are as follows: AKN 42, AKN 81,
AKN 223, and AKN 253. The catalog lists for each Seyfert designation of
object, list reference number, equatorial position and positional
accuracy, redshift, angular major axis, B-V and U-B color indices,
references to UBV photometry, spectra, and radio data. The second list
did not include angular major axis and color indices.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
seyfert.doc 79 556 Documentation
seyfert.dat 192 121 Catalog Data
refs.dat 80 230 References
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Byte-by-byte Description of file: seyfert.dat
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Bytes Format Units Label Explanations
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1- 12 A12 --- Name Designation of object
14 I1 --- list 1 = from 1977 list; 2 = from 1978 list
15- 16 I2 h RAh Right Ascension (epoch 1950.0) hours
18- 19 I2 min RAm Right Ascension (epoch 1950.0) minutes
21- 24 F4.1 s RAs Right Ascension (epoch 1950.0) seconds
26 I1 --- u_RAs *[1,3]? Code for accuracy of Right Ascension
29 A1 --- DE- Declination (epoch 1950.0) sign
30- 31 I2 deg DEd Declination (epoch 1950.0) degrees
33- 34 I2 arcmin DEm Declination (epoch 1950.0) arcminutes
36- 37 I2 arcsec DEs Declination (epoch 1950.0) arcseconds
39 I1 --- u_DEs *[1,4]? Code for accuracy of Declination
42- 43 A2 --- class [12?A ] Class of galaxy (1, 1A, 2, 2A)
47- 51 I5 km/s cz ? Redshift
54- 56 I3 arcsec ama *? Angular major axis
59- 65 A7 --- ref1 *References for chart
69- 72 F4.2 mag B-V *? B-V color index
74- 78 F5.2 mag U-B *? U-B color index
82- 96 A15 --- ref2 *References for UBV photometry
100-145 A46 --- ref3 *References for spectra
147-192 A46 --- ref4 *References for Infrared, Radio data
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Note on u_RAs:
1 = originally to 0.1 minute
2 = originally to 1 second
3 = originally to 0.1 second
Note on u_DEs:
1 = originally to 0.1 hour
2 = originally to 1 minute
3 = originally to 0.1 minute
4 = originally to 1 second
Note on ama:
Angular Major Axis, Measured on Palomar Sky Survey prints by Weedman.
(Other photographs used for a few southern objects.)
Not given for objects published in the second (1978) list
Note on ref1 ref2 ref3 ref4:
All reference numbers refer to refs.dat.
Bytes 100-192 give the references to additional data for these sources,
but the actual additional data is given neither in the published lists
nor in seyfert.dat.
Note on B-V U-B:
Not given for objects published in the second (1978) list and for some
in the first (1977) list. "The UBV colors are given for the smallest
apertures used so as to represent primarily the nuclei."
Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- ref ?Reference number as in seyfert.dat
7- 80 A74 --- text *Text of reference
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Note on text:
If ref is blank, then text is continued from the previous record.
Remarks and modifications:
The two Seyfert galaxy lists of Weedman (see references below) were
keypunched at NASA/Goddard Space Flight Center. The data tables were combined
in a uniform format. The bibliographies were also combined, and the
reference numbers in the data tables edited accordingly. In the machine-
readable version, the precision of the equatorial coordinates is indicated by
numerical codes rather than by the usual typographical conventions (which are
used in the original tables). Acknowledgement is made to Priscilla Struthers
for the initial formatting and keypunching of machine-readable version.
The original documentation for this catalog was prepared by Robert S. Hill
and Theresa A. Nagy (January 1981).
References:
Weedman D.W., 1977 "Seyfert Galaxies", Annual Reviews of Astronomy and
Astrophysics, 15, 69.
Weedman D.W., 1978 "More Seyfert Galaxies", Monthly Notices of the Royal
Astronomical Society, 184, 11P.
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(End) Julie Anne Watko [SSDOO/ADC] 10-JAN-1997