Astronomical Data Center
ADC/CDS Standard Document for Catalog:
/catalogs/2/2120/
The following is the "ReadMe" document that describes this ADC catalog. You can access the files described here in three ways:
II/120 Phot and Spectrophot Investigation, South Gal Pole (Eriksson 1978)
================================================================================
A Photometric and Spectrophotometric Investigation in a Region at the South
Galactic Pole
Eriksson P-I.W.
<Uppsala Astron. Obs. Report 11 (1978)>
================================================================================
ADC_Keywords: Galactic pole, south; Photometry, UBV; Spectrophotometry
Description:
Photoelectric magnitudes and colors in the Johnson-Morgan UBV system
for 477 stars in 6 square degrees near Kapteyn Selected Area 141
(l=245, b=-86; 00 43 < RA < 01 11, -33.7 < Dec < -26.9, B1950.0)
are given in the first data file. The estimated rms accuracies
are 0.02 (V), 0.03 (B-V), 0.07 (U-B) for stars in the magnitude
range 15 to 16. Table 2 of the source reference gives
the mean errors for intervals of magnitude.
Photographic V magnitudes and B-V colors are given for 2835 stars
to magnitude 17 (in the same region as above) in the second data
file. The estimated rms accuracies are 0.05 (V) and 0.08 (B-V). The
mean errors of the computed right ascensions and declinations are
0.15s and 2", respectively.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
pe.dat 48 477 Photoelectric data
pg.dat 42 2835 Photographic data
--------------------------------------------------------------------------------
Byte-by-byte Description of file: pe.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 I4 --- SeqNumb Sequential number
6- 12 A7 --- ID Star number in the Henry Draper (HD)
Catalogue or the Cordoba Dirchmusterung (CD)
14- 15 I2 h RAh right ascension (hours) (B1950)
17- 18 I2 min RAm right ascension (minutes)
20- 21 I2 s RAs right ascension (seconds)
23 A1 --- DE- Declination sign
24- 25 I2 deg DEd Declination (degrees) (B1950)
27- 30 F4.1 arcmin DEm Declination (minutes)
32- 36 F5.2 mag V Photoelectric V magnitude.
38- 42 F5.2 mag B-V Photoelectric B-V color
44- 48 F5.2 mag U-B ? Photoelectic U-B color (value missing
for SeqNumb = 215)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: pg.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 12 A12 --- ID *Star number in declination zones of 10',
in the form XX.Y.zzzz:
XX=degrees of southern declination.
Y=tens digit of minutes of arc
zzz=current number in the zone
14- 15 I2 h RAh right ascension B1950 (hours)
17- 18 I2 min RAm right ascension (minutes)
20- 21 I2 s RAs right ascension (seconds)
23 A1 --- DE- declination sign
24- 25 I2 deg DEd declination B1950 (degrees)
27- 30 F4.1 arcmin DEm declination (minutes)
32- 36 F5.2 mag V *? Photographic V magnitude
38- 42 F5.2 mag B-V *? Photographic B-V color
--------------------------------------------------------------------------------
Note on ID:
In the form XX.Y.zzzz:
XX=degrees of southern declination.
Y=tens digit of minutes of arc
zzz=current number in the zone
Note on V, B-V:
V and B-V are missing for star 30.2.204 -- the fields are blank.
Historical notes:
The data were keypunched for Kavan U. Ratnatunga in 1982 June at
the data center of the Australian National University, Canberra.
They were supplied to the Astronomical Data Center/NASA Goddard
Space Flight Center by K. Ratnatunga in 1986 April.
Data format modified at the Astronomical Data Center (ADC)/NASA GSFC,
1991 October...Wayne H. Warren Jr.
Errors corrected at CDS consecutive signs +- in
Table pe, col. U-B, line 215 (missing value)
Table pg, col. B-V, line 805 (29.3.096) (two consecutive signs +-)
Table pg, col. B-V, line 2637 (30.5.048) (two consecutive signs +-)
Changes made at ADC:
pe.dat: changed in record 155, 268, 335 positions in RA with RAs=60
to RAm=RAm+1 and RAs=00.
================================================================================
(End) N.P.M. Kuin, C.-H. Joseph Lyu [NASA], Joseph Florsch [CDS] 09-JUN-1995
Go to ADC Home Page