VII/16 Reference Catalogue of Bright Galaxies (RC1; de Vaucouleurs+ 1964)
Reference Catalogue of Bright Galaxies
de Vaucouleurs G., de Vaucouleurs A.
<The Reference Catalogue of Bright Galaxies, Univ. of Texas Press,
Austin (1964)>
=1964rcbg.book.....D 1964rcbg.book.....D
ADC_Keywords: Galaxy catalogs; Active gal. nuclei; Bibliography;
Description:
The Reference Catalogue of Bright Galaxies lists for each entry the
following information: NGC number, IC number, or A number; A, B, or C
designation; B1950.0 positions, position at 100 year precession;
galactic and supergalactic positions; revised morphological type and
source; type and color class in Yerkes list 1 and 2; Hubble-Sandage
type; revised Hubble type according to Holmberg; logarithm of mean
major diameter (log D) and ratio of major to minor diameter (log R)
and their weights; logarithm of major diameter; sources of the
diameters; David Dunlap Observatory type and luminosity class; Harvard
photographic apparent magnitude; weight of V, B-V(0), U-B(0);
integrated magnitude B(0) and its weight in the B system; mean surface
brightness in magnitude per square minute of arc and sources for the B
magnitude; mean B surface brightness derived from corrected Harvard
magnitude; the integrated color index in the standard B-V system;
"intrinsic" color index; sources of B-V and/or U-B; integrated color in
the standard U-B system; observed radial velocity in km/sec; radial
velocity corrected for solar motion in km/sec; sources of radial
velocities; solar motion correction; and direct photographic source.
The catalog was created by concatenating four files side by side.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
catalog.dat 320 2597 Bright Galaxies Reference Data
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See also:
VII/112 : RC2 Catalogue (de Vaucouleurs+ 1976), supersedes RC1
VII/155 : RC3 Catalogue (de Vaucouleurs+ 1991), supersedes RC2
Byte-by-byte Description of file: catalog.dat
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Bytes Format Units Label Explanations
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2 A1 --- cat1 *[NIA] catalog identification
3- 6 I4 --- ID1 Catalog number 1
7 A1 --- suffix1 [ABCDEF] A, B, or C designation
8- 9 I2 h RAh Right ascension, hours (1950.0)
10- 13 F4.1 min RAm Right ascension, minutes (1950.0)
14 A1 --- DE- Declination (1950.0) degrees
15- 16 I2 deg DEd Declination (1950.0) degrees
18- 19 I2 arcmin DEm Declination, arc minutes (1950.0)
20- 25 F6.2 deg GLON1 Galactic longitude (l(I), degrees)
26- 31 F6.2 deg GLON2 Galactic longitude (l(II), degrees)
32- 36 F5.1 deg SGLON ? Supergalactic longitude (degrees)
37- 47 A11 --- RMtype Revised morphological type and source
48- 54 A7 --- TC_Yerk1 Type and color class in Yerkes list 1
55- 59 A5 --- HStype Hubble-Sandage type
60- 64 F5.2 [0.1arcmin] log(D) ?Logarithm of mean major diameter
65- 69 F5.2 --- log(R) ?Log of mean ratio of major diameter
to minor
70- 73 F4.2 [0.1arcmin] log(MaD) ?Logarithm of major diameter
in units of 0'.1
74- 80 A7 --- Source1 Sources of log(D) and log(R)
81 I1 --- --- [2] "2" indicates start of second line
82 A1 --- cat2 *[NIA] Indicates NGC, IC, or A in column ID2
83- 86 I4 --- ID2 Catalog number 2
87 A1 --- m_ID2 [ABCDEF] A, B, or C designation
88- 89 I2 h/ha PRAh+100 ?Precession in RA(hours) for 100 years
90- 93 F4.1 min/ha PRAm+100 ?Precession in RA(minutes) for 100 years
94- 96 I3 deg/ha PDEd+100 [-90/90]? Precession in DEC(deg) for
100 years
97- 99 I3 arcmin/ha PDEm+100 [-59/59] precession in DEC(arcmin)
for 100 years
100-105 F6.2 deg GLAT1 Galactic latitude (b(I), degrees)
106-111 F6.2 deg GLAT2 Galactic latitude (b(II), degrees)
112-116 F5.1 deg SGLAT ?Supergalactic latitude (degrees)
117-127 A11 --- TypLumCl *Type and luminosity class
128-134 A7 --- TC_Yerk2 Type and color class in Yerkes list 2
135-139 A5 --- RHubType Revised Hubble type according to Holmberg
140-144 F5.2 --- w_log(D) ?Weight of log(D)
145-149 F5.2 --- w_log(R) ?Weight of log(R)
154-160 A7 --- Source2 Sources of log(D) and log(R) continued
161 A1 --- cat3 *[NIA] Indicates NGC, IC, or A in column ID3
162-165 I4 --- ID3 Catalog number 3
166 A1 --- m_ID3 [ABCDEF] A, B, or C designation
(repeated data)
167-170 F4.1 mag Hpmag ?Harvard photographic apparent magnitude
171 A1 --- note "*" See the notes in the original reference
172-176 F5.2 mag B(0) ?Integrated magnitude in the B system B(0).
177-181 F5.2 mag/arcmin2 BsurfBr1 ?Mean B surface brightness
182-186 A5 --- Source3 Sources of B magnitude
187-191 F5.2 --- B-V(0) ?Integrated color index in the B-V system
192 A1 --- u_B-V(0) [* ] '*' means uncertain values in B-V
193-196 F4.2 --- IntrinCI ?Intrinsic color index.
197-201 A5 --- Source4 *Sources of B-V or U-B
202-205 F4.2 --- U-B(0) ?Integrated color index in the U-B system
206 A1 --- u_U-B(0) [ *] '*' means uncertain values in U-B
207-211 I5 km/s RV ?Observed radial velocity
212-216 I5 km/s RVC ?Radial velocity corrected for solar motion
217-221 A5 --- Source5 Sources of radial velocities
222-236 A15 --- Cflux *Radio (continuum) flux
237-240 A4 --- Source6 Direct photographic source
241 A1 --- cat4 *[NIA] Indicates NGC, IC, or A in column ID4
242-245 I4 --- ID4 Catalog number 4
246 A1 --- flag6 [ABCDEF] A, B, or C designation
(repeated data)
247-251 F5.2 mag HphotoMC *?Harvard photographic magnitude corrected
252-256 F5.2 --- w_B(0) ?Weight of B(0) (cf. bytes 172-176)
257-261 F5.2 --- BsurfBr2 *?Mean B surface brightness
262-266 A5 --- Source7 Sources of B magnitude (continued)
267-271 F5.2 --- w_B-V(0) ?Weight of B-V(0) (cf. bytes 187-192)
277-281 A5 --- Source8 Sources of B-V and U-B colors continued
282-286 F5.2 --- w_U-B(0) ?Weight of U-B(0) (cf bytes 202-206)
287-292 F6.1 --- w_RV ?Weight of Radial Velocity
293-296 I4 km/s SolarC Solar motion correction
297-301 A5 --- Source9 Sources of RV (continued from
bytes 217-221)
302-320 A19 --- unknown unexplained extra characters
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Note on cat1:
catalog identification coded as NGC#, IC#, or A# ("N", "I", or
"A" respectively).
Note on Source4:
Sources of B-V and data after the symbol / is the source of U-B
Note on Cflux:
Radio (continuum) flux at some standard wavelength integrated flux in the
21-cm HI emission line; both fields are currently blank.
Note on TypLumCl:
David Dunlap Observatory type and luminosity class
Note on cat2, cat3, cat4:
NGC#, IC#, or A# (repeat data, see bytes 2-6)
Note on HphotoMC:
Harvard photographic magnitude statistically corrected
Note on BsurfBr2:
Mean B surface brightness derived from corrected Harvard magnitude
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Remarks and Modifications:
The machine-readable version of the de Vaucouleurs' Galaxy catalogue was
received through a copy at the University of Pennsylvania (March 1975). The
last tape record was incomplete and this was corrected by using the
information from the hard copy version of the catalogue.
Initially, the tape version had four records for each entry of the
catalogue. The first two records corresponded to the two lines of data on
the left-hand page of the hard copy. The third and fourth records
corresponded to the two lines of data per entry on the right-hand page of
the hard copy version of the catalogue. Each of these records were initially
138 bytes in length and it was determined that only the first 80 bytes of
each record contained catalogue data and that the remaining part of the
record was blank. The catalogue was then run through a short program which
concatenated the first 80 bytes of each of the four records and output one
record, 320 bytes in length, per entry in the catalogue.
Acknowledgements:
The original ADC documentation by Theresa A. Nagy (1979) was used to generate
this ReadMe file.
Reference:
G. de Vaucouleurs and A. de Vaucouleurs, Reference Catalogue
of Bright Galaxies, 1964, 1st edition, University of Texas Press.
(End) C.-H. Joseph Lyu [Hughes STX/NASA] 08-Nov-1995