J/A+AS/93/463 Astrometric catalog of Southern Dwarf Novae (Bruch+ 1992)
An astrometric catalogue of southern and equatorial dwarf novae
Bruch A., Meijer J., Naumann M., Schimpke T., Ungruhe R., Vogt N.
<Astron. Astrophys. Suppl. Ser. 93, 463 (1992)>
=1992A&AS...93..463B 1992A&AS...93..463B
ADC_Keywords: Binaries, cataclysmic; Atlases; Positional data
Keywords: Catalogues - Stars: binaries: close - Stars: variable: cataclysmic
Abstract:
An astrometric catalog of 116 southern and equatorial dwarf novae is
presented. The mean internal accuracy of the coordinates is of the
order of ± 0.025 s in alpha cos delta and ± 0.3 arcsec in delta.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 80 116 The catalogue
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See also:
J/A+AS/70/481 (Northern Part)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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2- 16 A15 --- Name variable star name.
18- 19 I2 h RAh Right Ascension 1950 (hours)
21- 22 I2 min RAm Right Ascension 1950 (minutes)
24- 28 F5.2 s RAs Right Ascension 1950 (seconds)
30 A1 --- DE- Declination 1950 (sign)
31- 32 I2 deg DEd Declination 1950 (degrees)
34- 35 I2 arcmin DEm Declination 1950 (minutes)
37- 40 F4.1 arcsec DEs Declination 1950 (seconds)
42- 46 F5.3 s e_RAs ? formal (internal) mean error of the
measurements at the plate location of the
variable star as derived from the least
squares solution to the position of the
standard stars in right ascension
(multiplied by cos(delta)) in seconds of
time. (1)
48- 51 F4.2 arcsec e_DEs ? formal (internal) mean error in declination
in seconds of arc. (1)
53- 59 F7.2 yr Epoch ? epoch of the coordinates. (2)
61- 64 A4 --- Source the type of the plate on which the positions
were measured, or source of the measurements:
L = Lopez (1985, IBVS 2837)
W = Williams (1983, ApJS 53, 523)
K = Kiplinger (1985, IBVS 2488)
Other abbreviations are self-explanatory.
66- 72 A7 --- RefCat Source catalogue for the reference stars.
In most cases the AGK3 or the PPM catalogue
could be used. However, for some fields we
had to use the SAO catalogue which has a
somewhat inferior accuracy.
74- 76 I3 --- Nref ? Number of reference stars for the coordinate
determination (only for our own measurements)
78- 80 A3 --- Rem a code for remarks (3)
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Note (1): Since Lopez (1985, IBVS 2837) and Williams (1983, ApJS 53, 523)
do not quote errors for their measurements no corresponding information
can be given for coordinates taken from their publications.
Note (2): Since the exact date of the exposures of the SRC plates is not
known, we give a mean epoch of 1980 for the corresponding coordinates.
Similarly, we do not know the epoch of Lopez's (1985, IBVS 2387))
plates. Therefore, we cannot give values in these cases.
Note (3): Code as:
1. The position could not be determined by a Gaussian fit
to the stellar image because of close, brighter
neighbours. Instead, the position was found by locating
the centre of gravity of the stellar image visually.
2. There is a difference of more than 5.5 arcsec in right
ascension to the position of Lopez (1985, IBVS 2837).
3. On the POSS chart the star is a member of an unresolved
group of stars. The position refers to the centre of a
Gaussian fitted to this group.
4. Mean values from positions measured on three plates.
5. NN Cen is the northern component of a close optical pair
which is not resolved on the chart of Vogt and Bateson
(1982, A&AS 48, 383).
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(End) Francois Ochsenbein [CDS] 13-Apr-1993