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J/PASP/113/267 Mount Wilson catalogue photometric properties (Sandage, 2001)
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The Mount Wilson halo mapping project 1975-1985.
II. Photometric properties of the Mount Wilson catalogue of photographic
magnitudes in Selected Areas 1-139.
Sandage A.
<Publ. Astron. Soc. Pac. 113, 267 (2001)>
=2001PASP..113..267S
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ADC_Keywords: Photometry, UBVRI ; Photometry, photographic
Abstract:
This paper is partly a review of the history of the making of the
Mount Wilson Catalogue of Photographic Magnitudes in Selected Areas
1-139 (hereafter the MWC), begun in 1909 and completed in 1930, and it
is partly the presentation of new photometric results concerning it.
Photoelectric photometry of 435 stars in the 11 Selected Areas of SA
28, 29, 45, 55, 57, 71, 82, 94, 106, 107, and 118 of the MWC is given.
The data are used to derive magnitude corrections to the MWC for these
areas. Ten of the areas are in the Galactic meridional plane (Galactic
longitudes of 0{deg} and 180{deg}). These are the same areas used by
Becker in his Basel program of star counts for the study of Galactic
structure.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea.dat 89 435 Photoelectric photometry
tableb.dat 55 618 Photographic photometry for Mount Wilson
catalog star
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See also:
VI/19 : UBV Photoelectric Sequences in SA 92-115 (Landolt 1973)
II/118 : UBVRI standards around Celestial Equator (Landolt 1983)
II/183A : UBVRI Photometric Standards (Landolt 1992)
Byte-by-byte Description of file: tablea.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- SA SA number (SA FFF)
8- 10 A3 --- SKvR Identification number (NNNS) in the Mont Wilson
catalog, MWC, [SKV30] FFF-NNNs in Simbad
12- 21 A10 --- Name Other name if no SKvR number (1)
23- 27 F5.2 mag mpg ? Photographic magnitude (copied from the
Seares et al. listings)
29- 33 F5.2 mag Bpe Photoelectrical B magnitude
34 A1 --- u_Bpe Uncertainty flag on Bpe
35 A1 --- n_Bpe [P] Note (2)
37- 41 F5.2 mag Vpe Photoelectrical V magnitude
42 A1 --- u_Vpe Uncertainty flag on Vpe
43 A1 --- n_Vpe [P] Note (2)
45- 49 F5.2 mag U-B ? U-B colour index
50 A1 --- u_U-B Uncertainty flag on U-B
51 A1 --- n_U-B [P] Note (2)
53- 57 F5.2 mag B-V B-V colour index
58 A1 --- u_B-V Uncertainty flag on B-V
59 A1 --- n_B-V [P] Note (2)
61- 64 F4.2 mag (V-R)MW ? Mount Wilson (V-R) colour index
65 A1 --- u_(V-R)MW Uncertainty flag on (V-R)MW
67- 70 F4.2 mag (R-I)MW ? Mount Wilson (R-I) colour index
72- 78 A7 --- Nobs Number of times the star was observed (3)
81- 89 A9 --- Com Comments (4)
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Note (1): Names nomenclature:
SA 57 Becker NNN = Basel SA 57-NNN in Simbad
SA 106 LNNNN = SA 106-NNNN in Simbad
SA 118 MW NNN
Note (2): Data origin:
P: data by Purgathofer (1969LowOB...7...98P)
If P is placed next to a U-B value only, the B and V magnitudes are
the values measured only in the Mount Wilson program alone.
L: data by Landolt (1973, Cat. <VI/19>; 1983, Cat. <II/118>;
1992, Cat. <II/183>)
Note (3): Where two numbers are given, the first refers to the B and V
measurement and the second to the V-R measurement
P2000: A finding chart for the faint stars listed in SA 57 measured
with the Palomar 200 inch is given in Figure 2 of the paper. These are
labeled with their Becker numbers which he assigned while measuring a
series of 200 inch plates sent to him for the Basel program. These
particular stars were measured photoelectrically in the present
program to provide Basel with faint standards.
Note (4): Comments:
P stands for Purgathofer (1969LowOB...7...98P)
L stands for Landolt (1973, Cat. <VI/19>; 1983, Cat. <II/118>;
1992, Cat. <II/183>)
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Byte-by-byte Description of file: tableb.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- SA SA region (SA FFF)
8- 10 A3 --- SKvR Identification number (NNNS) in the Mont Wilson
catalog, MWC, [SKV30] FFF-NNNs in Simbad
12- 16 F5.2 mag mpg Photographic magnitude (copied from the
Seares et al. listings)
17 A1 --- n_mpg [:dx?] Note on mpg (1)
19- 23 F5.2 mag Bpg ? Photographic B magnitude
24 A1 --- u_Bpg Uncertainty flag on Bpg
26- 30 F5.2 mag Vpg ? Photographic V magnitude
31 A1 --- u_Vpg Uncertainty flag on Vpg
33- 37 F5.2 mag RMW ? Mont Wilson R magnitude
38 A1 --- u_RMW [:)] Uncertainty flag on RMW
40- 44 F5.2 mag B-V ? B-V colour index
45 A1 --- u_B-V Uncertainty flag on B-V
47- 51 F5.2 mag (V-R)MW ? Mount Wilson (V-R) colour index
52- 53 A2 --- u_(V-R)MW [:)? ] Uncertainty flag on (V-R)MW
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Note (1): "d," "x" as in the MWC
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History:
From electronic version of the journal
References:
Sandage, Paper I 1997PASP..109.1193S
Seares, 1914ApJ....39..307S
Seares, 1915, Proc. Natl. Acad. Sci., 1, 309
Seares, 1917ApJ....46..117S
Seares, 1920ApJ....52..162S
Seares, 1922a, Trans. IAU, 1, 69
Seares, 1922ApJ....56...97S
Seares, 1925ApJ....62..168S
Seares, 1928ApJ....67..123S
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(End) James Marcout, Patricia Bauer [CDS] 19-Jun-2001