J/AJ/83/1090 Late-type M dwarfs towards the SGP (Pesch+ 1978)
A catalog of probable dwarf stars of type M3 and later in the direction
of the South Galactic Pole.
Pesch P., Sanduleak N.
<Astron. J., 83, 1090-1099 (1978)>
=1978AJ.....83.1090P 1978AJ.....83.1090P
ADC_Keywords: Stars, late-type ; Galactic pole, south ; Magnitudes, photographic
Abstract:
A catalog, including finding charts, is presented which contains 282
faint stars of spectral type M3 and later, located in an area of 173
square degrees near the South Galactic Pole. The catalog is based on
a spectroscopic survey undertaken with the Curtis Schmidt at CTIO and
provides a finding list of M stars free of any possible kinematic
bias. The majority of these stars are expected to be dwarfs. To the
same limiting magnitude, the observed surface density is comparable to
that of the faint M stars in the direction of the North Galactic Pole,
named 273 over 190 square degrees.
Description:
This catalog, prepared by B. Skiff (Lowell Obs.), contains accurate
positions for the stars published in table 1 of the paper. The catalog
results from 32 objective-prism plates taken on the Curtis Schmidt at
Cerro Tololo Inter-American Observatory in November 1974 surrounding
the South Galactic Pole. The entire region, extending between (1950):
right ascension between 00:40 and 01:43, declination between -20.5 and
-32.8°, was photographed with 3 different prism-filter-emulsion
combinations: the 4° prism (dispersion ∼100nm/mm at Hα)
combined with an OG-2 filter and Kodak 098-02 emulsion, the 4°
prism in combination with an RG-8 filter and Kodak 1-N emulsion, and
the thin prism (dispersion ∼670nm/mm at the atmospheric A-band) in
combination with an RG-8 filter and Kodak 1-N emulsion. Photoelectric
V and Kron-I photometry was obtained in September 1977 with the 1-ml
reflector at Las Campanas Observatory.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
ps78.dat 78 282 Faint M-type stars near the South Galactic Pole
(table 1 of paper)
notes.dat 92 71 Corss-identifications and additional notes
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See also:
III/74 : Faint Blue Stars near the South Galactic Pole (Haro+ 1962)
J/ApJS/83/203 : Catalog of faint A, F and G stars at SGP (Lu+, 1992)
Byte-by-byte Description of file: ps78.dat
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Bytes Format Units Label Explanations
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2- 4 I3 --- PS78 [1/282] Running number
6- 7 I2 h RAh Right Ascension J2000 (hours)
9- 10 I2 min RAm Right Ascension J2000 (minutes)
12- 16 F5.2 s RAs Right Ascension J2000 (seconds)
18 A1 --- DE- Declination J2000 (sign)
19- 20 I2 deg DEd Declination J2000 (degrees)
22- 23 I2 arcmin DEm Declination J2000 (minutes)
25- 28 F4.1 arcsec DEs ? Declination J2000 (seconds)
30 A1 --- s [UbMYTg] Source of position
32- 35 F4.1 mag mag Optical magnitude (generally V-band)
37 A1 --- n_mag [VR] Band of mag
41- 78 A38 --- Comments Comments, from B. Skiff (star #169 from
F. Ochsenbein, CDS)
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Byte-by-byte Description of file: notes.dat
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Bytes Format Units Label Explanations
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2- 4 I3 --- PS78 [1/282] Running number
6 A1 --- --- [=]
8- 92 A85 --- Names Alternative names and comments
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History:
Prepared by B. Skiff (Lowell Obs.)
(End) Francois Ochsenbein [CDS], Brian Skiff [Lowell Obs] 21-Dec-2012