J/A+AS/53/181 Star positions in 14 southern galactic clusters (Andersen+, 1983)
Positions of stars in regions of 14 southern galactic clusters.
Andersen T.B., Reiz A.
<Astron. Astrophys. Suppl. Ser. 53, 181 (1983)>
=1983A&AS...53..181A 1983A&AS...53..181A
ADC_Keywords: Associations, stellar ; Positional data
Keywords: photographic astrometry - galactic clusters - field correctors -
Ritchey-Chretien telescopes
Abstract:
Positions for a total of 3487 stars, scattered over 14 regions, have
been determined using the Danish 1.5-m telescope at La Silla. The 14
regions are centred on one of the southern galactic clusters NGC 1981,
2287, 2437, 2451, 2516, 2546, 2547, 2548, 3114, 3532, IC 2391, 2395,
2602 and Trumpler 10. Combining the Ritchey-Chretien reflector optics
with a single element Schmidt-type corrector, gives a considerably
enlarged flat field (radius about 25 minutes of arc, or 95mm) with
stellar images of excellent definition. With the exception of
distortion, which can be allowed for, the effect of the primary
aberrations is negligible. A frame of reference has been established
for each region using ESO Schmidt plates centred on the clusters, each
plate containing from 20 to 35 measurable Perth 70 stars. These
objects have served for determining positions of some 200 to 400
fainter stars within a central field of 25 minutes of arc radius,
covering the corresponding 1.5-m plates. The fainter stars serve as a
secondary standard. Based on three 1.5-m plates for each region, taken
on different nights, an internal mean error in one plate position in
the range 0.030 to 0.048 seconds of arc has been derived.
Objects:
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RA (2000) DE Designation(s)
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05 35 12.0 -04 26 00 NGC 1981
06 46 54.0 -20 44 00 NGC 2287
07 41 48.0 -14 49 00 NGC 2437
07 45 24.0 -37 58 00 NGC 2451
07 58 18.0 -60 52 00 NGC 2516
08 12 24.0 -37 38 00 NGC 2546
08 10 25.7 -49 10 03 NGC 2547
08 13 48.0 -05 48 00 NGC 2548
10 02 42.0 -60 07 00 NGC 3114
11 05 33.0 -58 43 48 NGC 3532
08 40 12.0 -53 04 00 IC 2391
08 42 37.0 -48 06 48 IC 2395
10 44 18.0 -64 19 48 IC 2602
08 47 48.0 -42 29 00 Cl Trumpler 10
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table4.dat 94 3487 Positions of 3487 stars in 14 southern open clusters
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- --- [Cl*]
5- 15 A11 --- Cl Cluster name
17- 18 A2 --- --- [AR]
20- 22 I3 --- Seq Star designation in Cluster
(<Cl* Cluster AR NNN> in Simbad)
24- 25 I2 h RAh Right ascension (1950.0)
27- 28 I2 min RAm Right ascension (1950.0)
30- 35 F6.3 s RAs Right ascension (1950.0)
37 A1 --- DE- Declination sign (1950.0)
38- 39 I2 deg DEd Declination (1950.0)
41- 42 I2 arcmin DEm Declination (1950.0)
44- 48 F5.2 arcsec DEs Declination (1950.0)
50- 60 A11 --- CPD CPD (I/108) or
Zh (Zurhellen, 1909VeBon..11....1Z 1909VeBon..11....1Z) or
ZS (Li Khen, 1954, Ann. Obs. Astron. Zo-Se 23, 1)
designation
62- 72 A11 --- BD/CD BD (I/122) or CD (I/114) designation
74- 77 A4 --- --- [AC#1]
79- 83 I5 ---- AC1 ? AC1 designation (1)
84 A1 --- u_AC1 [?] Uncertainty flag on AC1
86- 89 A4 ---- --- [AC#2]
91- 94 I4 ---- AC2 ? AC2 designation (1)
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Note (1): Plates from the Astrographic Catalogue used for identification:
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Region AC Zone Plate #1 Plate #2
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NGC 1981 San Fernando -05° 05h 32min
NGC 2287 Byderabad -21° 06h 44min
NGC 2437 Tucubaya -14° 07h 36min
NGC 2451 Perth -38° 07h 40min
NGC 2516 Sydney -61° 07h 52min
NGC 2546 Perth -37° 08h 05min -37° 08h 15min
NGC 2547 Cape -49° 08h 06min
NGC 2548 San Fernando -05° 08h 04min -05° 08h 12min
NGC 3114 Sydney -60° 09h 52min -60° 10h 08min
NGC 3532 Sydney -58° 11h 00min
IC 2391 Sydney -53° 08h 30min -53° 08h 42min
IC 2395 Cape -48° 08h 40min
IC 2602 Sydney -64° 10h 30min -64° 10h 48min
Tr 10 Cape -42° 08h 40min -42° 08h 50min
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History:
* 17-Jan-2011: Prepared via OCR at CDS.
* 01-Jul-2011: Some CPD/BD and CD designation corrected by CDS
(End) Marie-Jose Wagner, Patricia Vannier [CDS] 10-Jan-2005