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I/79 Lowell Proper Motion Survey 8991 Northern Stars (Giclas 1971)
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Lowell Proper Motion Survey: 8991 Stars with m > 8, PM > 0.26"/year
in the Northern Hemisphere
Giclas H.L., Burnham Jr. R., Thomas N.G.
<Lowell Obs., Flagstaff, AZ (1971)>
=1971lpms.book.....G
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ADC_Keywords: Positional data ; Proper motions
Description:
The catalog contains a summary of many individual papers published in
the Lowell Observatory Bulletins in the years 1958 to 1970. The data
in the machine-readable version include observed positions, proper
motions, estimated photographic magnitudes and colors, and references
to identifications in other catalogs. Photoelectric data on the UBV
system are included for many stars, but no attempt was made to find
all existing photometry. The notes.dat file was computerized at the
ADC by keying the notes directly to disk storage.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
north.dat 100 8989 Catalog Data
table2.txt 78 75 Key to reference abbreviations
table3.txt 67 57 Supplementary parallax codes
notes.dat 80 2429 Notes
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See also:
I/112 : Southern Hemisphere Lowell Proper Motion Catalog (Giclas+ 1978)
Byte-by-byte Description of file: north.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- G *Original G number assigned
9- 10 I2 h RAh *Right ascension 1950 (hours)
11- 12 I2 min RAm Right ascension 1950 (minutes)
13- 14 I2 s RAs Right ascension 1950 (seconds)
15 A1 --- DE- Sign of declination
16- 17 I2 deg DEd Declination 1950 (degrees)
18- 21 F4.1 arcmin DEm Declination
22- 26 F5.2 arcsec/yr pm Annual proper motion
27- 29 I3 deg pmPA *The position angle of proper motion
30- 33 F4.1 mag Pmag Estimated photographic magnitude
34- 35 I2 --- col *[-1/4] Estimated color class
36- 37 I2 --- o_pm *Number of observations
39- 74 A36 --- osource *Or equivalent
75 A1 --- flag *[*] '*' indicates a note in file notes.dat
76 A1 --- code *Parallax Code
78- 82 F5.2 mag Vmag *?Photoelectric V magnitude
84- 88 F5.2 mag B-V ?B-V color (blank if no data)
90- 94 F5.2 mag U-B ?U-B color (blank if no data)
98-100 A3 --- r_Vmag *Ref code for the magnitude source
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Note on G:
Original G number assigned to the star on the plate region where it was
first Found. Stars which were subsequently found on later plates were
assigned new G numbers; however, in this catalog all duplicate
observations have been combined and averaged with the original G numbers
retained. Byte 1 of the field always contains a "G" and byte 5 always
always contains a "-". The number in bytes 2-4 is the plate number,
while that in bytes 6-8 is the star number on the plate.
Note on RAh:
Epochs are given for plate regions in the original Lowell Bulletin
numbers reported in the CHT column of the published catalog.
Note on pmPA:
PA of proper motion, measured in the normal way from North through East.
Note on col:
Color class is on a scale of -1 (bluest) to +4 (reddest). Almost all
stars having color class -1 have subsequently been classified as white
dwarfs. An approximate relationship between estimated color and UBV
colors is given in the published catalog.
Note on o_pm:
Observations from different plate regions contained in the mean.
A value of unity denotes a single observation from one plate pair.
Actually, there are never as many as ten observations, so byte 33
is always blank.
Note on osource:
References for other sources containing information and/or data about
the star. References are separated by blank characters and consist
mainly of designations in other catalogs. A symbol "+" following the
last reference indicates additional references in the notes to the
catalog. The reference key is given in table2.txt.
Note on flag:
Note in the published catalog which gives additional information about
the star. See notes.dat for a description of the machine-readable
notes.
Note on code:
Indicates if the star is on a parallax program of some observatory, thus
denoting the possibility that a trigonometric parallax may eventually be
be available. The following codes are employed:
A Allegheny Obs.
L Lick
M Leander McCormick
N U.S. Naval
S Sproul
V Van Vleck
Y Yerkes
A digit of >= 2 (= n) indicates the star to be on the working lists of
n observatories. The codes for the n observatories are listed in
table3.txt.
Note on Vmag:
Photoelectric V magnitude obtained from the source given in bytes
95-97. UBV data are given for reference purposes only and no attempt
for completeness has been made. Blank if no data reported.
Note on r_Vmag:
The magnitude source reference key is given below. A digit >= 2 denotes
multiple references (given in the notes.dat). Note: the appended minus
signs on some codes are not explained in the published catalog.
Lowell Proper Motion Survey, Northern Hemisphere.
Magnitude Source Reference Key
E1 Eggen, O. J. 1963, Astron. J. 68. 483.
E2 Eggen, O. J. 1966, Royal Obs. Bull. No. 120.
E3 Eggen, O. J. 1968, Astrophys. J. Suppl. 16, 97 (No. 143).
E4 Eggen, O. J. 1969, Astrophys. J. Suppl. 19, 31 (No. 168).
E5 Eggen, O. J. 1968, Astrophys. J. 153, 195.
EG1 Eggen, O. J. and Greenstein, J. L. 1965, Astrophys. J. 141, 83.
EG2 Eggen, O. J. and Greenstein, J. L. 1965, Astrophys. J. 142, 925.
EG3 Eggen, O. J. and Greenstein, J. L. 1967, Astrophys. J. 150, 927.
ES Eggen, O. J. and Sandage, A. 1967, Astrophys. J. 148, 911.
G1 Greenstein, J. L. 1969, Astrophys. J. 158, 281.
S1 Sandage, A. 1964, Astrophys. J. 139, 442.
S2 Sandage, A. 1969, Astrophys. J. 158, 1115.
SK Sandage, A. and Kowal, C. 1962, private communications.
WG Gliese W. 1969, Catalogue of Nearby Stars, Veroff. Astron.
Rechen-Inst. Heidelberg, No. 22.
WA Wanner, J. F. 1964, Ph.D. Thesis, Harvard University.
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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- 8 A8 --- G G Star number, as in table north.dat
9- 10 A2 --- m_G *Shared note
11- 12 I2 --- count *Line counter
13- 80 A68 --- Text Text of remark
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Note on m_G:
As described for bytes 1-8 in catalog.dat. If more than one
consecutive G number is referred to, a slash (/) appears in byte 9 and
the final digit of the second G number is given in byte 10. If more
than two consecutive G numbers are included, a hyphen appears in byte
9 and the final digit of the last number in byte 10. A comma is given
in byte 9 if two non-consecutive G numbers are referenced. Bytes 9 and
10 may also contain component identifications for double stars having
the same G number, e.g. "AB".
Note on count:
Used to sequentially number remarks for the same star(s). Can be used
as a secondary sort field to reorder the notes properly if they become
disorganized.
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Remarks:
The first record in catalog.dat, containing only the word "MUCAT",
was deleted.
Multiple 80-byte records were combined while deleting a test digit in
byte 80 indicating an additional record, and redundant G numbers on
multiple records were removed.
The machine-readable catalog contains 8989 records. A count of the
stars in the published catalog (113 full pages with 75 stars per page
and 68 stars on last page) gives 8993; however, stars are missing on
pages 28, 29 and 42, resulting in 8989 stars total.
Preceding zeroes were added to the G numbers to match the published
catalog.
There was no distinction between blank and 0.00 color indices.
Initially, all zeroes were converted to blanks for B-V and U-B, then
the published catalog was scanned for valid 0.00 values and the
values were added for the appropriate stars.
Plus signs were added to the declinations (byte 15), the color class
positive values, and to all positive color indices.
The following miscellaneous corrections to the published catalog were
made to the machine file:
G066-036 photoelectric data deleted as per published version
G213-017 Declination degrees corrected from +39 to +37
G128-032 added BD+32 4584-5
The notes file was prepared by keying the published remarks directly to
disk and adding to the catalog as a second file.
Acknowledgements:
The original ADC documentation (1983) by Wayne H. Warren, Jr. was used
to create this ReadMe file. He also did the original data
reformatting.
References:
Giclas, H. L. 1958, Lowell Obs. Bull. 4, 1 (No. 89).
Giclas, H. L., Burnham, R. Jr. and Thomas, N. G. 1961, Lowell Obs.
Bull. 5, 61 (No. 112).
Giclas, H. L., Burnham, R. Jr. and Thomas, N. G. 1963, Lowell Obs.
Bull. 6, 1 (No. 120).
Giclas, H. L., Burnham, R. Jr. and Thomas, N. G. 1964, Lowell Obs.
Bull. 6, 103 (No. 122).
Giclas, H. L., Burnham, R. Jr. and Thomas, N. G. 1964, Lowell Obs.
Bull. 6, 135 (No. 124).
Giclas, H. L., Burnham, R. Jr. and Thomas, N. G. 1965, Lowell Obs.
Bull. 6, 197 (No. 129).
Giclas, H. L., Burnham, R. Jr. and Thomas, N. G. 1966, Lowell Obs.
Bull. 6, 233 (No. 132).
Giclas, H. L., Burnham, R. Jr. and Thomas, N. G. 1966, Lowell Obs.
Bull. 6, 271 (No. 136).
Giclas, H. L., Burnham, R. Jr. and Thomas, N. G. 1967, Lowell Obs.
Bull. 7, 1 (No. 138).
Giclas, H. L., Burnham, R. Jr. and Thomas, N. G. 1967, Lowell Obs.
Bull. 7, 31 (No. 140).
Giclas, H. L., Burnham, R. Jr. and Thomas, N. G. 1968, Lowell Obs.
Bull. 7, 67 (No. 144).
Giclas, H. L., Burnham, R. Jr. and Thomas, N. G. 1969, Lowell Obs.
Bull. 7, 129 (No. 150).
Giclas, H. L., Burnham, R. Jr. and Thomas, N. G. 1970, Lowell Obs.
Bull. 7, 149 (No. 151).
Giclas, H. L., Burnham, R. Jr. and Thomas, N. G. 1970, Lowell Obs.
Bull. 7, 165, (No. 152).
Giclas, H. L., Burnham, R. Jr. and Thomas, N. G. 1971, Lowell Proper
Motion Survey, Northern Hemisphere, The G Numbered Stars (Flagstaff:
Lowell Observatory).
Giclas, H. L., Slaughter, C. D. and Burnham, R. Jr 1959, Lowell Obs.
Bull. 4, 136 (No. 102).
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(End) Melissa C. Larkin [SSDOO/ADC] 10-Mar-1997