J/ApJ/105/85 A search for faint blue stars (Humason+, 1947)
A search for faint blue stars.
Humason M.L., Zwicky F.
<Astrophys. J., 105, 85-91 (1947)>
=1947ApJ...105...85H 1947ApJ...105...85H
ADC_Keywords: Stars, blue
Description:
Four-color photography has been used in a search for faint blue stars
with the 18-inch Schmidt telescope at Palomar, undertaken in the hope
of finding new white dwarfs. The results are given for stars brighter
than magnitude 15.0pg in 2 regions: the Hyades cluster and the North
Galactic Pole. Spectroscopic observations were made with the 100-inch
reflector.
In the "hz.dat" file, corresponding to the table 4 of the paper, the
stars were identified and accurate positions added by B. Skiff (Lowell
Observatory) in January 2005, using the finding charts published in
the "First Conference on Faint Blue Stars" held in Strasbourg in Aug.
1964, p.121 (Univ. Minnesota, 1965)
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
hz.dat 100 49 Preliminary list of faint blue stars
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Byte-by-byte Description of file: hz.dat
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Bytes Format Units Label Explanations
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1- 2 A2 --- --- [HZ]
4- 5 I2 --- HZ [1/48] Humason-Zwicky star number,
as in table 4
6 A1 --- m_HZ [ab] Multiplicity index (added B. Skiff)
10- 11 I2 h RAh Right Ascension J2000 (hours)
13- 14 I2 min RAm Right Ascension J2000 (minutes)
16- 20 F5.2 s RAs Right Ascension J2000 (seconds)
22 A1 --- DE- Declination J2000 (sign)
23- 24 I2 deg DEd Declination J2000 (degrees)
26- 27 I2 arcmin DEm Declination J2000 (minutes)
29- 32 F4.1 arcsec DEs Declination J2000 (seconds)
34 A1 --- s [UbM] Source of position (1)
36- 44 A9 --- GSC Designation in GSC-1.2 (I/254)
46- 53 I8 --- UCAC2 ? Designation in UCAC2 (I/289)
55- 66 A12 --- USNO-B1 Designation in USNO-B1.0 (I/284)
69- 72 F4.1 mag Vmag Visual approximative magnitude (from B. Skiff)
75- 77 A3 --- SpT Spectral type, as given in table4
82-100 A19 --- Remark Comments from B. Skiff
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Note (1): the letter indicates the source of position:
U = UCAC2 (Zacharias et al. 2004, Cat. I/289)
b = USNO-B1.0 (Monet et al. 2003, Cat. I/284)
M = 2MASS (Cutri et al. 2003, Cat. II/246)
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History:
Prepared by Brian Skiff (Lowell Obs.); version 2005-01-05.
(End) Brian Skiff [Lowell Obs.], Francois Ochsenbein [CDS] 08-Feb-2010