I/112A Lowell Proper Motion Survey - Southern Hemisphere (Giclas+ 1979)
Lowell Proper Motion Survey - Southern Hemisphere Catalog 1979
Giclas H.L., Burnham Jr. R., Thomas N.G.
<Lowell Observatory Bulletin No. 164, (1978)>
=1978LowOB...8...89G 1978LowOB...8...89G
=1979LowOB...8..145G 1979LowOB...8..145G
ADC_Keywords: Positional data ; Proper motions
Description:
This catalog contains a summary of the Lowell Proper Motion Survey
for the southern hemisphere. The catalog gives the position, motion,
magnitude, and color of 2827 stars from the Lowell program.
Introduction:
The material from which this catalog has been prepared is drawn from
Lowell Observatory Bulletins, in which the data have been published
from 1958 to 1979. The number of the specific Lowell Bulletin where
the object was first identified and measured and a finding chart given
is given in the eighth column of the catalog under the heading LOB.
The first epoch plates were taken in connection with the
trans-Neptunian planet search beginning late in the year 1929. The
second epoch matching plates were taken as the blinking and measuring
progressed, Therefore the difference in epoch increased from a minimum
of 28 years at the beginning of the survey to 48 years as of the date
of this catalog.
At the inception of the program, a reasonable degree of completeness
could be maintained for motions of 0.27"/year and larger. Later in the
program the limit was lowered to include motions of 0.20"/year and
larger. This catalog, therefore, is a combination of these two limits
of motions; however, the percentage of plate regions with the smaller
motion limit is much greater in this southern hemisphere catalog than
in the northern hemisphere. The four plate regions around the south
galactic pole are all measured to the lower limit of motion.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
south.dat 98 2827 The catalog of Southern G-numbered stars
synonyms.dat 19 626 Synonyms of G stars measured 2 or more times
notes.htx 81 1600 Notes about G stars
pos158.dat 41 69 Accurate positions for field#158 (from B. Skiff)
acro.dat 332 68 References of used acronyms
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See also:
I/79 : Lowell Proper Motion Survey in Northernern Hemisphere (Giclas+ 1971)
Byte-by-byte Description of file: south.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- G Original G number assigned (1)
9 A1 --- n_G [*] Note in the printed catalog (2)
11- 12 I2 h RAh Right ascension hours (Equinox 1950)
14- 15 I2 min RAm Right ascension minutes
17- 18 I2 s RAs Right ascension seconds
21 A1 --- DE- Declination sign (Equinox 1950)
22- 23 I2 deg DEd Declination degrees
25- 28 F4.1 arcmin DEm Declination arcminutes
30- 34 F5.2 arcsec/yr pm Annual total proper motion (3)
37- 39 I3 deg pmPA Proper motion position angle (3)
42- 45 F4.1 mag Pmag Estimated Photographic (blue) magnitude
48- 49 I2 --- col [-1/4]? Color class (4)
52- 95 A44 --- X-id Other identifications (5)
96- 98 I3 --- LOB Identification chart reference (6)
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Note (1):
byte 1 of the field always contains a G and byte 5 always contains a
dash (-). The number in bytes 2-4 is the plate number, while that in
bytes 6-8 is the star number on the plate. Original G number assigned
to the star on the plate region where it was first found. Stars that
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. In cases where a
close companion has been found on a later plate, the source of a
finding chart prepared from that plate may be found in the
identification chart field (LOB). When the catalog entry is a mean
formed from two or more observations, the additional stars making
up the mean are listed first in the X-id column.
Note (2):
An asterisk (*) indicates that a note concerning the star appears in
the Bulletin in which it was first published. The notes are included
in the "notes.htx" file (a note about a peculiar entry is introduced
by the "\entry" text)
Note (3):
The value "pm" represents the annual proper motion in seconds of arc.
The components of the proper motion are:
µα*cos(δ) = pm*sin(pmPA) ;
µδ = pm*cos(pmPA)
Note (4):
The estimated color class is on a scale from -2 (the bluest) to +4
(the very reddest) stars found. Almost all stars of color classes -2
and -1 have been subsequently identified from photometry or spectra
as white dwarfs.
Because there is such a wide variety of different types of objects
among these motions, it is impossible to define a narrow relationship
between these color classes and the conventional B-V and U-B colors.
The table below is given with the warning that the true color of any
one individual star may deviate from the mean value by as much as half
a magnitude for stars redder than color class 0.
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Color Class B-V U-B
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-1 +0.11 -0.74
0 +0.26 -0.57
+1 +0.80 +0.33
+2 +1.30 +1.09
+3 +1.61 +1.18
---------------------------------
Note (5):
Catalog entries are, in many cases, the combined means of measurements
on two or more plate regions; in these cases, the additional G
number(s) appear as the first entry(ies) in the Reference field.
If a G number in the references carries an asterisk, but the field
following the identification field (byte 9) does not, then the note on
that star appears only in the Lowell Observatory Bulletin where the
latter number was published. Following the G numbers, references to
other proper-motion lists and catalogs are given, as identified in the
reference key in the appendix of this document.
Note (6):
The Lowell Bulletin number in which an identification chart (18x18')
is given for the star. The summary catalog was compiled from
collections of data appearing in earlier Lowell Observatory Bulletins.
There are no finding charts in the source reference, but they can be
found in the original references given in the table of the Note on
n_ID.
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Byte-by-byte Description of file: synonyms.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Gsyn G number in X-id column of "south.dat" file
10 A1 --- --- [=]
12- 19 A8 --- G The main G number
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Byte-by-byte Description of file: acro.dat
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Bytes Format Units Label Explanations
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1- 17 A17 --- Acronym Designation of catalog or list (1)
20 A1 --- Sep [=:] original list (=) or supplement (:) (1)
22-332 A311 --- Text Text of Reference
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Note (1):
The references to other proper-motion catalogs and lists are
identified by character prefixes, followed by the numerical
designations of the objects in a catalog or list, according to
standard astronomical usage. The prefixes are identified with their
corresponding references. (Note: not all of the identifiers listed
actually appear in the catalog. The key is repeated from the Lowell
Proper Motion Survey, Northern Hemisphere (Giclas, Burnham, and Thomas
1971) and some identifiers may only appear in that catalog).
When the column 'Sep' (byte 20) contains the equal sign (=), the
bibliographical sources that provided information for the catalog
consist of references for the star designations in other catalogs and
lists, plus references for general information. The general references
are combined with some supplementary identification references in
the source publications and that order has not been changed in the
following sections. The information given below appears in the source
reference and is repeated here for users who do not have ready access
to that publication.
When the column 'Sep' (byte 20) contains the colon (:), the
supplementary references include sources of some identifiers used
in the catalog, plus general reference sources consulted during
preparation of the catalog.
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Byte-by-byte Description of file: pos158.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- G Original G number assigned (GFFF-NNN)
12- 13 I2 h RAh Right Ascension J2000 (hours)
15- 16 I2 min RAm Right Ascension J2000 (minutes)
18- 22 F5.2 s RAs Right Ascension J2000 (seconds)
24 A1 --- DE- Declination J2000 (sign)
25- 26 I2 deg DEd Declination J2000 (degrees)
28- 29 I2 arcmin DEm Declination J2000 (minutes)
31- 34 F4.1 arcsec DEs Declination J2000 (seconds)
36 A1 --- s [CMSTUb] Source of position (1)
38- 41 F4.1 mag Vmag Approximate visual magnitude
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Note (1): source of position as follows:
b = USNO-B1.0 (2003AJ....125..984M 2003AJ....125..984M, I/284)
C = Carlsberg meridian circle, CMC14 (I/304)
M = 2MASS (2006AJ....131.1163S 2006AJ....131.1163S, II/246)
S = SDSS-DR7 (2009ApJS..182..543A 2009ApJS..182..543A, II/294)
T = Tycho-2 (2000A&A...357..367H 2000A&A...357..367H, I/259)
U = UCAC2 (2004AJ....127.3043Z 2004AJ....127.3043Z, I/289) + UCAC3 (I/315)
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History:
* January 1985: a tape copy of the G-numbered stars was kindly supplied
by H.L. Giclas to CDS
* 08-Dec-1995: Documentation standardized by Julie Anne Watko [SSDOO/ADC]
* 15-Apr-2010: Stars of field#158 (1979LowOB...8..145G 1979LowOB...8..145G) kindly supplied by
B. Skiff (Lowell Obs.), as well as the notes (file "notes.htx"),
and catalog number changed to I/112A; the file "synonyms" was added.
References:
Giclas H.L., Burnham JR. R., and Thomas N. G. 1971, Lowell Proper
Motion Survey, Northern Hemisphere, The G Numbered Stars (Flagstaff:
Lowell Observatory).
Giclas H.L., Burnham Jr. R., and Thomas N. G. 1978, Lowell Proper
Motion Survey, Southern Hemisphere Catalog 1978, Lick Obs. Bull.
No. 164.
(End) Brian Skiff [Lowell Obs.], Francois Ochsenbein [CDS] 30-Apr-2010