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II/207 Palomar-Green catalog UV-excess stellar objects (Green+ 1986)
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The Palomar-Green catalog of ultraviolet-excess stellar objects.
Green R.F., Schmidt M., Liebert J.
<Astrophys. J. Suppl. Ser. 61, 305 (1986)>
=1986ApJS...61..305G
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ADC_Keywords: Ultraviolet ; Photometry, UBV ; Photometry, uvby ; Blue objects
Keywords: techniques: photometric - quasars: general - stars: faint blue -
stars: spectral classification - stars: stellar statistics -
subdwarfs - white dwarfs
Description:
The Palomar-Green Catalogue of UV-excess stellar objects provides
positions accurate to about 8arcsec in each coordinate, photographic
B-magnitudes accurate to 0.29mag, spectral types, some
cross-references, and photoelectric broad-band, multichannel, and
Stroemgren colors when available.
Of the 1874 objects in the catalogue as published in 1986 (1878 in
this version), 1715 comprise a statistically complete sample covering
10714 square degrees from 266 fields taken on the Palomar 18-inch
Schmidt telescope. Limiting magnitudes vary from field to field,
ranging from 15.49 to 16.67. The overall completeness is estimated to
be 84%, but that figure and the relative contributions of magnitude,
color, and accidental errors vary depending on the magnitude and color
distribution of the spectroscopic subsample.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
catalog.dat 144 1878 *Palomar-Green Survey Data (Table 5)
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Note on catalog: it may differ slightly from the published version
as updates have been incorporated by the authors as new information
became available.
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See also:
J/AJ/111/645 : Morphology of Bright Quasars of this list (Fabian+ 1996)
Byte-by-byte Description of file: catalog.dat
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Bytes Format Units Label Explanations
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1- 11 A11 --- PG PG name (1)
14- 15 I2 h RAh Right Ascension 1950 (hours)
17- 18 I2 min RAm Right Ascension 1950 (minutes)
20- 23 F4.1 s RAs Right Ascension 1950 (seconds)
25 A1 --- DE- Declination 1950 (sign)
26- 27 I2 deg DEd Declination 1950 (degrees)
29- 30 I2 arcmin DEm Declination 1950 (minutes)
32- 33 I2 arcsec DEs Declination 1950 (seconds)
36- 40 F5.2 mag Pmag Photographic magnitude, accuracy 0.29mag
43- 47 F5.2 mag Blim []?=0. Limiting magnitude of field (2)
50- 58 A9 --- Comment Other names, redshift or spectral type (3)
60- 64 A5 --- Class Spectral classification
66 A1 --- Note [*] a high dispersion spectrum exists
68- 72 F5.2 mag Bmag ? Photoelectic Johnson's magnitude
73 A1 --- u_Bmag Uncertainty flag (:) on Bmag
74- 78 F5.2 mag U-B ? Photoelectic Johnson's colour index
79 A1 --- u_U-B Uncertainty flag (:) on U-B
80- 84 F5.2 mag B-V ? Photoelectic Johnson's colour index
87- 91 F5.2 mag vmag ? Palomar photometric index (4)
92 A1 --- u_vmag Uncertainty flag (:) on vmag
93- 97 F5.2 mag u-v ? Palomar photometric index (4)
98 A1 --- u_u-v Uncertainty flag (:) on u-v
99-103 F5.2 mag b-v ? Palomar photometric index (4)
105-109 F5.2 mag g-r ? Palomar photometric index (4)
111 I1 --- % ? Unexplained number
114-118 F5.2 mag Vmag ? V magnitude in Stroemgren system (5)
120-124 F5.2 mag b-y ? Colour in Stroemgren system (5)
125 A1 --- u_b-y Uncertainty flag (:) on b-y
126-130 F5.2 mag u-b ? Colour in Stroemgren system (5)
131 A1 --- u_u-b Uncertainty flag (:) on u-b
132-136 F5.2 mag m1 ? Index (v-b)-(b-y) in Stroemgren system (5)
138-145 A8 --- Refs [0-9, ] References (6)
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Note (1): This name did not exist in the original table; it has been
built from RAh, RAm, DE-, DEd and a digit representing the
rounded part of DEm. In the publication, these names appear
only in the finding charts.
*** Remark on PG 1535+547: its cross-identification in Zwicky catalog
corrected (see History below)
Note (2): if the object was found in overlapping fields, Blim indicates
the deeper exposure. A value of 0. means that the object is not
part of the complete statistical sample, which can be due to
faintness, undetection in automated scanning process, or presence
in a field with abnormally bright Blim.
Note (3): this column contains redshifts for extragalactic sources,
spectral types for companions to the blue stars, and brief notes
about spectral peculiarities or uncertainties. It contains also
cross-identifications of the objects.
For white dwarfs, see the McCook & Sion catalog <III/129>
For PHL (Palomar-Haro-Luyten, 1962BITon...3...37H) see catalog <III/74>
EG = Eggen and Greenstein (1965ApJ...141...83E, 1967ApJ...150..927E)
T = Tonantzintla lists (1957BOTT....2G...3I, 1959BOTT....2I...3C)
U = Usher and collaborators (1981ApJS...46..117U, 1982ApJS...48...51U,
1982ApJS...49...27U, 1984ApJS...56..393H)
K = Kiso UV survey
PB = Palomar-Berger (1977A&AS...28..123B)
L,LB = Luyten lists (Univ. Minnesota)
G,GD = Giclas Proper Motion Survey (see cats. <I/79>, <I/112>)
F = Feige (1958ApJ...128..267F)
HZ = Humason-Zwicky (1947ApJ...105...85H)
C,CB = Pesch & Sandyuleak (1983ApJS...51..171P, 1984ApJS...55..517S)
Note (4): Palomar 5m multichannel spectrophotometric indices defined
by Greenstein (1976ApJ...207L.119G) centered at
u=2.80um-1, g=2.12um-1, v=2.12um-1, r=1.44um-1 (wavenumbers micron-1)
and calibrated in the AB79 system by Oke & Gunn (1983ApJ...266..713O)
Note (5): See a description of Stroemgren system in Geneva
General Catalog of Photometric Data <GCPD/04>
Note (6): The values without citations are based on the authors'
measurements. Otherwise the numbers refer to the following papers:
1 = Green =1980ApJ...238..685G
2 = Graham =1972AJ.....77..144G
3 = Greenstein =1984ApJ...276..602G
4 = Wegner =1983AJ.....88..109W
5 = Liebert & Stockman =1980PASP...92..657L
6 = Wesemael et al. =1985ApJS...58..379W
7 = Bond et al. =1984ApJ...279..751B
8 = Ferguson et al. =1981ApJ...251..205F
9 = Margon et al. =1981Natur.293..200M
10 = Ferguson et al. =1984ApJ...287..320F
11 = Green et al. =1982PASP...94..560G
12 = Becker et al. =1982MNRAS.201..265B
13 = Penning et al. =1984ApJ...276..233P
14 = Liebert et al. =1982ApJ...256..594L
15 = Liebert et al. =1984ApJ...277..692L
16 = Liebert et al. =1983ApJ...264..262L
17 = Barker & Cudworth =1984ApJ...278..610B
18 = Schmidt & Green =1983ApJ...269..352S
19 = Weymann et al. =1980Natur.285...64W
20 = Ellis et al. =1984PASP...96..283E
21 = Sion et al. =1985ApJ...292..477S
22 = Sion et al. =1985ApJ...292..471S
23 = Szkody et al. =1985ApJ...293..321S
24 = McGraw et al. =1979IAUCo..53..377M
25 = Winget et al. =1984IAUC.3932.....W
26 = Winget et al. =1984ApJ...279L..15W
27 = Nather et al. =1984IAUC.4021.....N
28 = Green =1976PASP...88..665G
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Nomenclature Notes:
PG : the name is based on 1950 position. The first list of
PG objects was presented by Green R.F., Greenstein J.L.,
and Boksenberg A. (1976PASP...88..598G)
Acknowledgements:
Thanks to Richard Green <green@noao.edu> for supplying an electronic
version of his catalogue to H. Andernach <hja@vilspa.esa.es>
in March 1994
History:
* 17-Oct-1997: for PG 1535+547, in column "Comment", the cross-
identification I Zw 120 chaged to I Zw 121 (H. Andernach)
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(End) Heinz Andernach [IUE/Vilspa], Francois Ochsenbein [CDS] 26-Sep-1996