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J/A+AS/131/239 NGC 1750 + NGC 1758 BVR photometry (Galadi-Enriquez+ 1998)
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The overlapping open clusters NGC 1750 and NGC 1758:
II. BVR photographic photometry and proper motions
Galadi-Enriquez D., Jordi C., Trullols E., Guibert J., Tian K.-P.,
Zhao J.-L.
<Astron. Astrophys. Suppl. Ser. 131, 239 (1998)>
=1998A&AS..131..239G (SIMBAD/NED BibCode)
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ADC_Keywords: Clusters, open ; Photometry, UBVRI ; Proper motions
Keywords: open clusters and associations: individual: NGC 1746 -
open clusters and associations: individual: NGC 1750 -
open clusters and associations: individual: NGC 1758 -
methods: astrometry
Description:
Photographic astrometric and photometric catalogue.
Table 6 contains (x,y) positions, (mu_x, mu_y) relative proper motions
and BVR photographic photometry.
Notes give cross-identifications with other catalogues.
Table 11 contains equatorial positions (alpha, delta) and absolute
proper motions (mu_alpha cos delta, mu_delta) in FK5 and ICRS
reference systems.
Objects:
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RA (2000) DE Designation(s)
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05 03.6 +23 49 NGC 1746 = C 0500+237
05 03.9 +23 39 NGC 1750 = C 0500+235
05 04.4 +23 47 NGC 1758 = C 0501+237
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table6.dat 101 51846 Photographic photometric and astrometric catalogue
notes.dat 82 1713 List of 1713 stars cross-identified with
other catalogues
table11.dat 91 56730 FK5 and ICRS positions and proper motions
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See also:
J/A+A/333/471 : UBVRI photometry of NGC 1750 & NGC 1758 (Galadi-Enriquez+ 1998)
J/A+A/337/125 : NGC 1750 & 1758 membership prob. (Galadi-Enriquez+, 1998)
J/A+AS/131/89 : NGC 1750 + NGC 1758 proper motions (Tian+ 1998)
I/149 : Fifth Fundamental Catalogue (FK5) Part I (Fricke+, 1988)
I/175 : Fifth Fundamental Catalogue (FK5) - Extension (Fricke+ 1991)
I/239 : The Hipparcos and Tycho Catalogues (ESA 1997)
Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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3- 8 I6 --- GJTGTZ Identification number
10- 17 F8.4 mm xpos x coordinate (master plate ref. system) (1)
19- 26 F8.4 mm ypos y coordinate (master plate ref. system) (1)
28- 34 F7.2 mas/yr pmxpos ?=99.99 Relative proper motion along x (2)
36- 42 F7.2 mas/yr pmypos ?=99.99 Relative proper motion along y (2)
44- 49 F6.2 um e_xpos ?=99.99 Error of x coordinate (1)
51- 56 F6.2 um e_ypos ?=99.99 Error of y coordinate (1)
58- 63 F6.2 mas/yr e_pmxpos ?=99.99 Error of proper motion in x
65- 70 F6.2 mas/yr e_pmypos ?=99.99 Error of proper motion in y
72- 77 F6.2 mag Bmag ?=99.99 Johnson B photographic magnitude (3)
79- 84 F6.2 mag Vmag ?=99.99 Johnson V photographic magnitude (3)
86- 91 F6.2 mag Rmag ?=99.99 Cousins R photographic magnitude (3)
93- 94 I2 --- Nplate Number of plates for proper motion calculation
96-101 F6.1 yr delta(t) Maximum epoch difference with master plate for
proper motion calculation
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Note (1): Coordinates xpos and ypos include the {xi} and {eta} parameters
(Eqs. 6 and 7) for stars with computed proper motions. The error of
xpos and ypos coordinates are that of {xi} and {eta} parameters for
stars with proper motions computed from more than three plates.
An error of 99.99 microns is quoted for stars without proper motion,
or with proper motion computed fom only two plates.
Note (2): Proper motions of 99.99 mas/yr are quoted for stars without proper
motion available. Proper motion errors of 99.99 mas/yr are assigned
to stars without proper motion, or with proper motion computed from
only two plates.
Note (3): Stars having B and R values, but lacking V photometry, are assigned
Vmag=99.99 mag. Stars lacking standard photographic photometry are
assigned Bmag=99.99 mag, Vmag=99.99 mag and, if available, the R value
from the master plate raw photometric photometry for cross-
identifications (Sect. 3.3) is given as the best estimation of R
magnitude. Bright stars lacking photometry due to saturation are
assigned Bmag=Vmag=Rmag=0.00 mag.
For the photometric errors, see Table 4 and Fig. 2.
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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- 6 I6 --- GJTGTZ Identification number
7 A1 --- --- [,]
9- 82 A74 --- Names Other names, separated by a comma (1)
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Note (1): The codes used are:
TYC: Tycho Catalogue, ESA, 1997, ESA-SP 1200, Cat. <I/239>
HIP: Hipparcos Catalogue, ESA, 1997, ESA-SP 1200, Cat. <I/239>
PPM: Positions and Proper Motions Catalogue,
Roeser and Bastian, 1989, Cat. <I/146> and <I/193>
HD: Henry Draper Catalogue, Cat. <III/135>
BD: Bonner Durchmusterung, Cat. <I/122>
GJTR: Paper I, Galadi-Enriquez et al., Cat. <J/A+A/333/471>
SChM: Straizhys, Chernis and Meishtas, 1992BaltA...1..125S,
[SCM92b] NNN in SIMBAD
Cuf: Cuffey, 1937AnHar.105..403C
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Byte-by-byte Description of file: table11.dat
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Bytes Format Units Label Explanations
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2- 7 I6 --- GJTGTZ Identification number
9- 10 I2 h RAJh FK5 right ascension, ep. 1994.9, eq. J2000
12- 13 I2 min RAJm FK5 right ascension, ep. 1994.9, eq. J2000
15- 20 F6.3 s RAJs FK5 right ascension, ep. 1994.9, eq. J2000
22 A1 --- DEJ- Sign of FK5 declination
23- 24 I2 deg DEJd FK5 declination, ep. 1994.9, eq. J2000
26- 27 I2 arcmin DEJm FK5 declination, ep. 1994.9, eq. J2000
29- 33 F5.2 arcsec DEJs FK5 declination, ep. 1994.9, eq. J2000
35- 41 F7.2 mas/yr pmRAJ ?=99.99 FK5 proper motion in alpha*cos(delta)
43- 49 F7.2 mas/yr pmDEJ ?=99.99 FK5 proper motion in delta
51- 52 I2 h RAh ICRS right ascension, ep. 1994.9
54- 55 I2 min RAm ICRS right ascension, ep. 1994.9
57- 62 F6.3 s RAs [0,60] ICRS right ascension, ep. 1994.9
64 A1 --- DE- Sign of ICRS declination
65- 66 I2 deg DEd ICRS declination, ep. 1994.9
68- 69 I2 arcmin DEm ICRS declination, ep. 1994.9
71- 75 F5.2 arcsec DEs [0,60] ICRS declination, ep. 1994.9
77- 83 F7.2 mas/yr pmRA ?=99.99 ICRS proper motion in alpha*cos(delta)
85- 91 F7.2 mas/yr pmDE ?=99.99 ICRS proper motion in delta
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Acknowledgements: David Galadi-Enriquez <dgaladi@pchpc5.am.ub.es>
History:
* 10-Mar-1998: first version
* 09-Sep-1998: table11 was corrected by the author (13 stars has a
missing sign in the proper motion)
References:
Arias et al., The extragalactic reference system of the International
Earth Rotation Service, ICRS. (1995A&A...303..604A)
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(End) Patricia Bauer [CDS] 10-Mar-1998