II/299 GD blue stars from Lowell proper motion survey (Giclas+ 1980)
Summary catalog of GD and GR stars
Giclas H.L., Burnham R., Thomas N.G.
<Lowell Obs. Bull. 8, 157 (1980)>
=1980LowOB...8..157G 1980LowOB...8..157G
ADC_Keywords: Stars, blue ; Stars, white dwarf ; Proper motions
Introduction:
A summary catalog listing 1712 white dwarf suspects and 504 very red
stars all with proper motions less than 0.20arcsec/year is presented.
The proper motion is given in seconds of arc per year for motion
greater than 0.06arcsec/year. Motion 0.06 sec/year or less is
designated slight; and the position angle is rounded to the nearest 5
degrees. Motion 0.03 sec/year or less is also indicated. Estimates of
the blue magnitude, star colors, photometry, and spectral type (if
determined) are given.
Description (from B. Skiff):
This list shows precise coordinates, mostly for epoch and equinox
J2000, for the 1712 GD stars. These were blue stars of small motion
found during the Lowell proper motion survey. The stars include
substantial numbers of white dwarfs (the intended objects), but at
least half are other sorts of blue stars: hot subdwarfs, blue
horizontal-branch stars, metal-poor dwarfs as late as K0 --- and
doubtless many ordinary F/G stars, and finally a few active galaxies.
Some hundreds of the stars are missing from SIMBAD, or appear with
approximate coordinates. I thus examined every object by comparing the
Lowell finder charts with cut-outs of the DSS, SDSS, and 2MASS images
using the Goddard SkyView utility. I obtained 'best' positions using
VizieR; these were drawn from a variety of sources, indicated by a
single-letter code following each position, and outlined in the Note
below.
Many of the same sources provided at least 'pretty good' V magnitudes,
but I adopted photoelectric/CCD observations when available, and also
used the ASAS-3 and TASS MkIV databases. The intent here is to remove
whatever systematic problems there are in the source magnitudes down
to the ∼0.1 mag level, not to provide accurate photometry.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
gd.dat 76 1713 Summary catalog of the GD stars.
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See also:
I/79 : Lowell Proper Motion Survey 8991 Northern Stars (Giclas 1971)
I/112 : Lowell Proper Motion Survey - Southern Hemisphere (Giclas+ 1979)
I/316 : Lowell GR* red stars (Giclas+ 1972-1978)
IV/7 : Table of correspondences Giclas/BD
J/ApJ/582/1011 : Revised NLTT Catalog (Salim+, 2003)
Byte-by-byte Description of file: gd.dat
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Bytes Format Units Label Explanations
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1- 2 A2 --- --- [GD]
4- 7 I4 --- GD [1/1712] GD running number
8 A1 --- m_GD [B] Additional star (concerns GD 1306)
12- 13 I2 h RAh Right Ascension J2000 (hours)
15- 16 I2 min RAm Right Ascension J2000 (minutes)
18- 22 F5.2 s RAs Right Ascension J2000 (seconds)
24 A1 --- DE- Declination J2000 (sign)
25- 26 I2 deg DEd Declination J2000 (degrees)
28- 29 I2 arcmin DEm Declination J2000 (minutes)
31- 34 F4.1 arcsec DEs Declination J2000 (seconds)
36 A1 --- s [BbCDgLMSsTU] Source of position (1)
38- 41 F4.1 mag Vmag Magnitude
45- 76 A32 --- Remarks Notes and remarks by B. SKiff
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Note (1): the source of the position is from the following catalogues:
B = Bordeaux meridian circle (2006A&A...448.1235D 2006A&A...448.1235D, Cat. I/300)
b = USNO-B1.0 (2003AJ....125..984M 2003AJ....125..984M, Cat. I/284)
C = Carlsberg CMC14 (2006yCat.1304.....C 2006yCat.1304.....C, Cat. I/304)
D = DENIS (1999A&A...349..236E 1999A&A...349..236E, Cat. b/denis)
g = GSC-2.3 (2006yCat.1305.....S 2006yCat.1305.....S, Cat. I/305)
L = LSPM (2005AJ....129.1483L 2005AJ....129.1483L, Cat. I/298)
M = 2MASS (2006AJ....131.1163S 2006AJ....131.1163S, Cat. II/246)
S = Sloan Digital Sky Survey DR7 (2008ApJS..175..297A 2008ApJS..175..297A, Cat. II/294)
s = SkyView estimate (±1")
T = Tycho-2 catalog (Hog et al. 2000A&A...355L..27H 2000A&A...355L..27H, Cat. I/259)
U = UCAC2 (2004AJ....127.3043Z 2004AJ....127.3043Z, Cat. I/289)
+ UCAC3 (2009, in press, Cat. I/315)
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History:
Prepared by B. Skiff (Lowell Observatory)
(End) Francois Ochsenbein [CDS] 25-May-2010