J/ApJS/153/119 Faint blue objects at high galactic latitude (Mitchell+, 2004)
Faint blue objects at high galactic latitude.
VIII. Performance characteristics of the US survey.
Mitchell K.J., Usher P.D.
<Astrophys. J. Suppl. Ser., 153, 119-157 (2004)>
=2004ApJS..153..119M 2004ApJS..153..119M
ADC_Keywords: Surveys ; QSOs ; Blue objects ; Galaxies, photometry
Keywords: catalogs - galaxies: active - quasars: general - stars: early-type -
surveys
Abstract:
The US (UV-excess Starlike) survey has cataloged 3987 objects in 7
high Galactic latitude fields according to their optical colors,
magnitudes, and morphologies using photographic techniques. This paper
analyzes the effectiveness of the survey at producing finding lists
for complete samples of hot stars and quasars that exhibit blue and/or
ultraviolet excess (B-UVX) relative to the colors of halo F and G
subdwarf stars. A table of 599 spectroscopic identifications
summarizes the spectroscopic coverage of the US objects that has been
accomplished to date.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 81 599 Spectroscopic coverage of the US survey
notes.dat 80 97 Individual notes
tablea1.dat 52 24 New US objects
tableb1.dat 18 56 Remeasured BUS magnitudes for selected objects
in the US SA 29 catalog
tablec1.dat 272 56 US Catalog Errata
refs.dat 182 118 References
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See also:
II/115 : Faint Blue Objects at High Galactic Latitude (Warnock+ 1982)
II/239 : A search for faint blue stars. (Berger+, 1977-84)
III/74 : Faint Blue Stars near the South Galactic Pole (Haro+ 1962)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- US (19/3987) Running US survey number
8- 9 I2 h RAh NED Hour of Right Ascension (J2000)
11- 12 I2 min RAm NED Minute of Right Ascension (J2000)
14- 17 F4.1 s RAs NED Second of Right Ascension (J2000)
19 A1 --- DE- NED Sign of the Declination (J2000)
20- 21 I2 deg DEd NED Degree of Declination (J2000)
23- 24 I2 arcmin DEm NED Arcminute of Declination (J2000)
26- 27 I2 arcsec DEs ? NED Arcsecond of Declination (J2000)
29- 32 A4 --- CC The CC 1-type classification (G1)
34- 38 F5.2 mag Bmag US survey B band magnitude (2)
39- 40 A2 --- f_Bmag Uncertainty flag in Bmag
42- 45 A4 --- SpID Spectroscopic identification (3)
47- 53 F7.5 --- z ? Redshift
56- 69 A14 --- r_SpID Reference on SpID
71- 80 A10 --- Notes Additional notes (4)
81 A1 --- n_US [*] indicates a note in notes.dat
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Note (2): A colon denotes uncertainty.
In the few instances where no magnitude is given in the catalogs
(typically for extended galaxies), the value was either taken from the
literature or roughly estimated from re-examination of the survey B
plates. In addition, some of the listed Bmag magnitudes are corrected
values, as discussed in the Appendices.
Note (3): From slit spectroscopy only since identifications based
solely on slitless spectra are deemed too unreliable for the
purposes of this paper. A question mark denotes uncertainty.
The classes are as follows:
Q = quasar (z<2.2)
Q* = quasar (z≥2.2)
G = galaxy
B = B star
sdB = subdwarf B star
sdO = subdwarf O star
DA = DA white dwarf
DB = DB white dwarf
HOT = hot star
rs = red star
CV = cataclysmic variable
PN = planetary nebula
Note (4): Notes as follows:
C = Confused Source
CG = Compact Galaxy
G = Galaxy
IER = Edge Zone (within Inner Edge Region)
E = Edge Zone (outside of IER)
R = Further remarks, as found in original US references
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Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- US US running number
8- 11 A4 --- fieldID Field identification
13- 15 A3 --- CC The CC 1-type classification (G1)
17- 20 F4.1 mag Bmag B magnitude
21 A1 --- u_Bmag Uncertainty flag on Bmag
23- 24 I2 h RAh Hour of Right Ascension (J2000)
26- 27 I2 min RAm Minute of Right Ascension (J2000)
29- 32 F4.1 s RAs Second of Right Ascension (J2000)
34 A1 --- DE- Sign of the Declination (J2000)
35- 36 I2 deg DEd Degree of the Declination (J2000)
38- 39 I2 arcmin DEm Arcminute of the Declination (J2000)
41- 42 I2 arcsec DEs Arcsecond of the Declination (J2000)
44- 52 A9 --- Notes Notes (2)
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Note (2): Notes as follows:
C = Confused source
CG = compact galaxy
G = galaxy
IER = edge zone (within inner edge region)
1 = Warnock et al., 1986MNRAS.218..445W 1986MNRAS.218..445W
2 = a corrected declination is given here
3 = forms a close pair with US 1732, separated by 4.5"
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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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1- 4 A4 --- US US number
5 A1 --- --- [.]
7- 80 A74 --- Note Text of the Note
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Byte-by-byte Description of file: tableb1.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- US US running number
8- 12 F5.2 mag Bmag B magnitude
13 A1 --- u_Bmag Uncertainty flag on Bmag
15- 18 A4 --- Notes Notes
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Byte-by-byte Description of file: tablec1.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- US US running number
8 I1 --- Ref Reference
10- 13 A4 --- FC Finder chart number within the US catalog
reference that contains the US object
15-272 A258 --- Com Comments
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 2 A2 --- Ref Reference code
4- 22 A19 --- BibCode BibCode
24- 49 A26 --- Aut Author's name
50-182 A133 --- Com Comments
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Global notes:
Note (G1): CC 1-type as follows:
1 = B-UVX candidates
2 = objects located within a thin color border between the CC 1-type
and CC 3 objects, where both B-UVX objects and red objects
might appear because of intermediate colors or errors in the
three-color iris photometry
3 = non-B-UVX objects, with colors similar to, or redder than,
the halo F/G subdwarfs and A stars
A colon denotes uncertainty.
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History:
From electronic version of the journal
References:
Usher Paper I 1981ApJS...46..117U 1981ApJS...46..117U, Cat. II/115
Usher et al. Paper II 1982ApJS...48...51U 1982ApJS...48...51U, Cat. II/115
Usher & Mitchell, Paper III 1982ApJS...49...27U 1982ApJS...49...27U, Cat. II/115
Huang & Usher, Paper IV 1984ApJS...56..393H 1984ApJS...56..393H, Cat. II/115
Usher et al. Paper V 1988ApJS...66....1U 1988ApJS...66....1U
Usher & Mitchell, Paper VI 1990ApJS...74..885U 1990ApJS...74..885U
Usher et al. Paper VII 1995ApJ...454..654U 1995ApJ...454..654U
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 29-Dec-2006