Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.simfov.ru/catalogs/npm1/npm1.txt Дата изменения: Thu Jun 15 12:14:00 2006 Дата индексирования: Mon Oct 1 19:34:05 2012 Кодировка: Поисковые слова: stellar nursery

I/199 Lick Northern Proper Motion Program: NPM1 Catalog (Klemola+ 1987)
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Lick Northern Proper Motion Program: NPM1 Catalog
Klemola A.R., Hanson R.B., Jones B.F.

=1987AJ.....94..501K
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ADC_Keywords: Positional data ; Proper motions ;
Magnitudes, photographic ; Colors ; Cross identifications

Description:
The NPM1 catalog is the first part of the Lick Northern Proper Motion
(NPM) program to measure absolute proper motions, on an inertial
system defined by some 50,000 faint galaxies, for some 300,000 stars
over a blue apparent magnitude range from 8 to 18. There are 1246
6-degree by 6-degree fields in the NPM survey (to declination -23
degrees). The NPM1 catalog covers the 72% of the northern sky lying
outside the Milky Way and contains some 149,000 stars from measures in
899 of the 1246 NPM fields. A second catalog (NPM2) will cover the NPM
Milky Way fields. The Yale Southern Proper Motion (SPM) program will
complete the southern sky. Each NPM field was photographed at two
epochs between 1947 and 1988. The mean first and second epochs are
1950 and 1977; the average epoch difference is 27 years. The
first-epoch plates were taken in the blue only; both blue and yellow
plates were taken at the second epoch. Some 94000 stars were chosen
anonymously for the NPM astrometric reductions and for statistical
studies of stellar motions. In addition, the NPM1 catalog contains
some 28000 positional reference stars, and some 27000 stars were
chosen from the Lick Input Catalog of Special Stars (ICSS). Positions
are given for equinox B1950 and computed epoch 1950. Each star's entry
includes the absolute proper motion and blue magnitude. For 97% of the
stars the color is also given. Other data given for each star are: the
original mean epoch, a stellar class code, the number of NPM fields
measured, and discrepancy flags for position, proper motion, and
photometry. Finally, as an additional identification, the AGK3 (north)
or SAO (south) number (if any) is given. The rms errors of the NPM
absolute proper motions are about 0.5"/cent in each coordinate. The
rms position errors at the catalog epoch 1950 average about 0.15" in
each coordinate. The rms errors for the NPM photographic photometry
average about 0.2 mag in B, and 0.15 mag in B-V.

More complete descriptive information is available in the ASCII or
LaTeX documentation written by A.R. Klemola, R.B. Hansen,
and R.B. Jones (UCO/Lick Obs.)

File Summary:
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File Name Lrecl Records Explanations
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ReadMe 80 . This file
npm1.dat 84 148940 The Catalogue
npm1.txt 80 323 ASCII Catalog Description
npm1.tex 80 267 LaTeX Catalog Description
adc.sty 78 68 Style file for npm1.tex
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Byte-by-byte Description of file: npm1.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Name [0-9.+-]! NPM1 star "name" made of:
Byte 1 : Sign of declination for this zone;
Bytes 2-3: Declination zone;
Bytes 4-8: Running number in this
declination zone
10- 11 I2 h RAh Right Ascension B1950, Epoch=B1950 (hours)
13- 14 I2 min RAm Right Ascension B1950 (minutes)
16- 21 F6.3 s RAs Right Ascension B1950 (seconds)
23 A1 --- DE- Declination B1950 (sign)
24- 25 I2 deg DEd Declination B1950, Epoch=B1950 (degrees)
27- 28 I2 arcmin DEm Declination B1950 (minutes)
30- 34 F5.2 arcsec DEs Declination B1950 (seconds)
35- 42 F8.2 10mas/yr pmRA Absolute proper motion RA (in "/century)
43- 50 F8.2 10mas/yr pmDE Absolute proper motion RE (in "/century)
51- 56 F6.2 mag Bmag Photographic photometry (B magnitude)
57- 62 F6.2 mag B-V *?=-9.99 Photographic photometry (B-V color)
63- 68 F6.2 yr Ep-1900 Original mean epoch of position (-1900)
69- 70 I2 --- iclass *[1,7] Code for class of star
71- 72 I2 --- Nfields Number of NPM fields on which the star
was measured
74 I1 --- Flag1 *Discrepancy flag Position
75 I1 --- Flag2 *Discrepancy flag Proper Motion
76 I1 --- Flag3 *Discrepancy flag Photometry
77- 83 I7 --- icatno *[1/258997]?=0 AGK3 or SAO identification
84 A1 --- agksgn *[-+ ] Change in Zone between NPM1 and AGK3
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Note on B-V:
(= -9.99 if no data)
Note on iclass:
The code is a sum of the following numbers, if applicable.
+1 if anonymous star (faint or bright)
+2 if catalog star (AGK3 or SAO)
+4 if other star (Lick Input Catalog)
Note on Flag1, Flag2 and Flag3:
As defined in Table 2 of the Document file (npm1.txt)
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Flag1 Flag2 Flag3
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Flag=0 O.K. O.K. O.K.
Flag=1 R.A. R.A. B
Flag=2 Dec. Dec. B-V
Flag=3 Both Both Both
Flag=9 Error Error Error
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Limits 1.0arcsec 3.0arcsec/cent 1.0mag
Note on icatno:
AGK3 identification for zones +89 to -01 (number in zone only, see agksgn)
SAO identification for zones -02 to -23
Note on agksgn:
blank if AGK zone = NPM zone
+ if AGK zone = NPM zone + 1
- if AGK zone = NPM zone - 1
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(End) N. Paul M. Kuin and Gail L Schneider [NSSDC/ADC] 22-Nov-199
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