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STI-T-1-5810-504-86
DOCUMENTATION FOR THE MACHINE-READABLE VERSION OF
THE CATALOG OF GALAXIES WITH ULTRAVIOLET CONTINUUM
(Markarian et al. 1967-81)
June 1986
Robert S. Hill
Lee E. Brotzman
Contract NAS 5-28408
Revised By
Susan E. Gessner
Lee E. Brotzman
January 1991
Prepared for
National Aeronautics and Space Administration
Goddard Space Flight Center
Greenbelt, MD 20771
Prepared by
SASC Technologies
4400 Forbes Blvd.
Lanham, MD 20706
TABLE OF CONTENTS
1.0 Introduction......................................................1
1.1 Description.......................................................1
1.2 References........................................................1
2.0 Structure.........................................................2
2.1 File..............................................................2
2.2 Logical Record....................................................2
3.0 History...........................................................5
3.1 Remarks and Modifications.........................................5
3.2 References........................................................5
LIST OF TABLES
Figure 1. Summary of MKN Catalog.......................................2
Figure 2. Summary of Data File Format..................................4
ii
INTRODUCTION
This document should accompany every copy of the machine-readable cata-
log.
1.1 DESCRIPTION
This document describes the machine-readable version of the lists "Gal-
axies with Ultraviolet Continuum" (MKN; Markarian 1967, 1969, 1969,
Markarian and Lipovetskii 1971, 1972, 1973, 1974, 1976a, 1976b, Markarian
et al., 1977a, 1977b, 1979a, 1979b, 1979c, 1982).
Markarian galaxies have a moderate to strong ultraviolet continuum, as
detected by an objective-prism survey at Byurakan Observatory from 1965
to 1978. The survey was done with a 40-inch Schmidt telescope, with a
dispersion of 2500 angstroms/millimeter at H-alpha. The catalog contains
no galaxies brighter than magnitude 13.0 or fainter than magnitude 17.5.
1.2 REFERENCES
Markarian, B. E. 1967, Astrofizika 3, 55.
Markarian, B. E. 1969, Astrofizika 5, 443.
Markarian, B. E. 1969, Astrofizika 5, 581.
Markarian, B. E., Lipovetskii, V. A. 1971, Astrofizika 7, 511.
Markarian, B. E., Lipovetskii, V. A. 1972, Astrofizika 8, 155.
Markarian, B. E., Lipovetskii, V. A. 1973, Astrofizika 9, 487.
Markarian, B. E., Lipovetskii, V. A. 1974, Astrofizika 10, 307.
Markarian, B. E., Lipovetskii, V. A. 1976, Astrofizika 12, 389.
Markarian, B. E., Lipovetskii, V. A. 1976, Astrofizika 12, 657.
Markarian, B. E., Lipovetskii, V. A., Stepanian, Dzh. A. 1977,
Astrofizika 13, 225.
Markarian, B. E., Lipovetskii, V. A., Stepanian, Dzh. A. 1977,
Astrofizika 13, 397.
Markarian, B. E., Lipovetskii, V. A., Stepanian, Dzh. A. 1979,
Astrofizika 15, 201.
Markarian, B. E., Lipovetskii, V. A., Stepanian, Dzh. A. 1979,
Astrofizika 15, 363.
Markarian, B. E., Lipovetskii, V. A., Stepanian, Dzh. A. 1979,
Astrofizika 15, 549.
Markarian, B. E., Lipovetskii, V. A., Stepanian, Dzh. A. 1981,
Astrofizika 17, 619.
1
2.0 STRUCTURE
2.1 FILE
The MKN catalog consists of two data files, the structure of which is
summarized in Figure 1. The files differ only in that one is sorted by
sequential galaxy number and the other by right ascension.
There are also attributes that will change from computer to computer.
You will probably have to know these in order to use your copy of the
catalog if it is on tape; therefore, they should have been supplied with
your tape. These attributes are as follows:
Number of tracks
Density in bits per inch
Block size in bytes
Number of records in a block
Number of blocks
Character code (ASCII or EBCDIC)
You might wish to write down the values alongside this list for reference.
Galaxies with Ultraviolet Continuum
(Markarian et al. 1967-81)
Catalog Abbreviation MKN
Number of files 2
Logical Record Lengths (Bytes) 74; 74
Record Format Fixed
Number of Logical Records 1525; 1525
Figure 1. Summary of MKN Catalog
2.2 LOGICAL RECORD
The Fortan format of the two data files is described by Figure 2 on page
4. The files differ only in that one is sorted by Markarian identifier
and the other by right ascension. The individual data fields are described
more fully in the text.
Markanian ID Catalog designation 'MKN ' [bytes 1-4, A4]. Sequential
number from 1-15000, followed by blank (1500 cases) or
by "A" (25 cases). [bytes 5-9, I4, A1]
Seyfert/QSO Flag "S" or "Q", respectively, if the galaxy is a possible
Seyfert galaxy or QSO. [byte 10, format A1]
2
Cross-ID 1 Other name of galaxy:
Morphological Catalogue of Galaxies (Vorontsov-
Velyaminov et al. 1962-68): "MGC" followed by
a number separated hyphens; e.g., MGC+12-06-019,
MGC-02-11-001.
New General Catalogue: "NGC" fo1lowed by number;
e. g., NGC 3353.
Index Catalogue: "IC" followed by number; e.g.,
IC 2209.
Blue Galaxies with Emission Lines (Haro 1956):
"HARO" followed by number; e.g., HARO 4.
A Search for Faint Blue Stars (Humason and
Zwicky 1947): "HZ" followed by number; HZ 46 is
the only instance.
[bytes 12-25, format A14]
Cross-ID 2 See preceding description. [bytes 26-35, format A10]
RA Right ascension, equinox 1950. Coordinates are from
Vorontsov-Velyaminov et al. (1962-68) or from Zwicky
et al. (1960-68).
Hours [bytes 36-37, format I2]
Minutes [bytes 38-42, format F5.1]
Declination Equinox 1950.
Sign "-/+" [byte 44, format A1]
Degrees [bytes 45-46, format I2]
Arc Min [bytes 47-49, format I3]
Major axis Arc seconds on Palomar Sky Survey. [bytes 50-54, I5]
Minor axis Arc seconds on Palomar Sky Survey. [bytes 55-59, I5]
Magnitude Estimated from objective prism spectrum. [bytes 60-66,
F7.2]
Spectral type The four basic types (s, sd, ds, and d) describe the
general appearance of the spectrum on the Schmidt plate,
ranging respectively from sharp to diffuse.
Next is a code for the strength of the ultraviolet
continuum, with 1 brightest and 3 least bright. This
part of the scheme changed over the course of the
survey: originally, 1 meant "strong" and 2 "moderate,"
with an intermediate classification of 12 (galaxies 1-
3
Bytes Data Name Fortran Format
1-9 Markarian Identifier A4,I4,A1
10 Seyfert/QSO Flag A1
11 Blank 1X
12-25 Cross-ID 1 A14
26-35 Cross-ID 2 A10
36-37 RA Hours I2
38-42 RA Minutes F5.1
43 Blank 1X
44 Declination Sign A1
45-46 Dec Degrees I2
47-49 Dec Arc Minutes I3
50-54 Major Axis I5
55-59 Minor Axis I5
60-66 Magnitude F7.2
67-68 Blank 2X
69-74 Spectral Type A6
Figure 2. Summary of Data File Format
70). The codes 1, 2, and 3 imply similarity to stellar
spectral types O-B0, B1-B3, and B5-B8, respectively
(Markarian et al. 1979b).
At the end of the spectral type there may appear an
E for emission lines or E: for possible emission
lines.
[bytes 69-74, format A6]
4
3.0 HISTORY
3.1 REMARKS AND MODIFICATIONS
The MKN catalog was received from the Centre de Donnees Stellaires (CDS),
Strasbourg, France, on 2 January 1982. The following modifications were
made:
1. Many keypunch errors were corrected in the emission-line subfield of
the spectral type.
2. CDS catalog code was stripped off the front of each record, and the
remaining 56 bytes of record length were expanded to 66.
3. Additional cross-identifications were incorporated from the published
version, expanding the record length to 74; the QSO and Seyfert codes
were changed from asterisks to "S" and "Q"; and a separate record was
allotted to each galaxy.
4. For galaxy 705, an evident error in the published list was corrected
by changing "6" in the RA hours field to "9".
5. Galaxy designations "MKN" and "MCG" were added, and the other designations
placed in a standard form.
3.2 REFERENCES
Haro, G. 1956, Bol. Obs. Tonantzintla y Tacubaya, 14, No. 8.
Humason, M. L., Zwicky, F. 1947, Astrophys. Journ., 105, 85.
Markarian, B. E. 1967, Astrofizika 3, 55.
Markarian, B. E. 1969, Astrofizika 5, 443.
Markarian, B. E. 1969, Astrofizika 5, 581.
Markarian, B. E., Lipovetskii, V. A. 1971, Astrofizika 7, 511.
Markarian, B. E., Lipovetskii, V. A. 1972, Astrofizika 8, 155.
Markarian, B. E., Lipovetskii, V. A. 1973, Astrofizika 9, 487.
Markarian, B. E., Lipovetskii, V. A. 1974, Astrofizika 10, 307.
Markarian, B. E., Lipovetskii, V. A. 1976, Astrofizika 12, 389.
Markarian, B. E., Lipovetskii, V. A. 1976, Astrofizika 12, 657.
Markarian, B. E., Lipovetskii, V. A., Stepanian, Dzh. A. 1977,
Astrofizika 13, 225.
Markarian, B. E., Lipovetskii, V. A., Stepanian, Dzh. A. 1977,
Astrofizika 13, 397.
5
Markarian, B. E., Lipovetskii, V. A., Stepanian, Dzh. A. 1979,
Astrofizika 15, 201.
Markarian, B. E., Lipovetskii, V. A., Stepanian, Dzh. A. 1979,
Astrofizika 15, 363.
Markarian, B. E., Lipovetskii, V. A., Stepanian, Dzh. A. 1979,
Astrofizika 15, 549.
Markarian, B. E., Lipovetskii, V. A., Stepanian, Dzh. A. 1981,
Astrofizika 17, 619.
Vorontsov-Velyaminov, B. A., Krasnogorskaya, A. A. 1962, Morphological
Catalogue of Galaxies. Part I. Catalogue of 7200 Galaxies between
Declinations +90 and +45, Trudy Gos. Astron. Inst. Shternberga, 32.
Vorontsov-Velyaminov, B. A., Arkhipova, V. P. 1964, Morphological
Catalogue of Galaxies. Part II. Catalogue of 9650 Galaxies between
Declinations +45 and +15, (Moscow).
Vorontsov-Velyaminov, B. A., Arkhipova, V. P. 1963, Morphological
Catalogue of Galaxies. Part III. Catalogue of 6740 Galaxies between
Declination +15 and -9, Trudy Gos. Astron. Inst. Shternberga, 33.
Vorontsov-Velyaminov, B. A., Arkhipova, V. P. 1968, Morphological
Catalogue of Galaxies. Part IV. Catalogue of 5410 Galaxies between
Declination -9 and -33, Trudy Gos. Astron. Inst. Shternberga, 38.
Vorontsov-Velyaminov, B. A., Arkhipova, V. P. 1974, Morphological
Catalogue of Galaxies. Part V, (Moscow: Moscow State University).
Zwicky, F., Herzog, E., Wild, P. 1960, Catalogue of Galaxies and
Cluster of Galaxies. Vol. I (Pasadena, Calif.: California Institute
of Technology).
Zwicky, F., Herzog, E., 1963, Catalogue of Galaxies and Cluster of
Galaxies. Vol. II (Pasadena, Calif.: California Institute of Technology).
Zwicky, F., Herzog, E., 1966, Catalogue of Galaxies and Cluster of
Galaxies. Vol. III (Pasadena, Calif.: California Institute of Technology).
Zwicky, F., Herzog, E., 1968, Catalogue of Galaxies and Cluster of
Galaxies. Vol. IV (Pasadena, Calif.: California Institute of Technology).
Zwicky, F., Karpowicz, M., Kowal C. T. 1965, Catalogue of Galaxies
and Cluster of Galaxies. Vol. V (Pasadena, Calif.: California Institute
of Technology).
Zwicky, F., Kowal C. T. 1968, Catalogue of Galaxies and Cluster of
Galaxies. Vol. VI (Pasadena, Calif.: California Institute of Technology).
6