II/232 UBV photometry of selected regions in the MCs (Braun 2001)
Large-scale star formation in the Magellanic Clouds derived from analysis
of stellar populations.
Braun J.M.
<Ph.D. Dissertation, Bonn Univ., Shaker Verlag, Aachen,
ISBN 3-8265-8325-6, ISSN 0947-7756 (2001)>
ADC_Keywords: Magellanic Clouds ; Stars, early-type ; Photometry, UBV ;
Photometry, CCD
Keywords: stars: early-type - Hertzsprung-Russell (HR) diagram -
Magellanic Clouds
Description:
This catalogue groups broad-band CCD photometry made in 8 regions of
the Magellanic Clouds which were used for the study of stellar
populations in the Magellanic Clouds. The photometry yielded 293693 BV
entries with 136155 having additional U information, published or
to be published in 4 different papers.
Introduction:
During my doctoral phase I studied stellar populations in the
Magellanic Clouds by broad-band (i.e. UBV) CCD photometry in
collaboration with several astronomers.
The first study inside LMC4 has already been published (see
J/A+A/328/167), while the next four projects have not been published
yet and are enclosed here:
1) 'lmc4c': a BV study of three overlapping (12.9')2 fields in the
very centre of LMC4 (the huge supergiant shell),
including the clusters HS343 (= KMHK1030) and KMHK1000.
The observations were made at the ESO 1.54m Danish telescope
in January 1999.
2) 'lmce': a UBV photometry in 10 (11.7')2 fields of five selected
regions:
'n70': N70 region (a giant shell) with an overlapping
western field,
'lmc2s': a strip inside SGS LMC2 out of 4 overlapping fields
including N164, NGC2100, and NGC2102,
'lmc2o': an outer field east of LMC2,
'n171': a field of the N171 region, located in a giant
molecular cloud complex
'n214': two overlapping fields of the southern N214 region.
The observations were made at the ESO 1.54m Danish telescope
in December 1996.
3) 'smc1': a UBV study of 4 overlapping (12.9')2 fields inside SGS
SMC1 of the wing region of the SMC, incl. NGC602 (N90) and N89.
The observations were made at the ESO 1.54m Danish telescope
in January 1998 (Central and South parts), and in November 1999
(North and West parts)
4) 'lmc7': a UBV photometry in 2 (12.9')2 fields [out of 12 fields
covering entirely LCM7], including the cluster SL106.
The observations were made at the ESO 1.54m Danish telescope
in January 1998.
Further details can be found in the ReadMe_'pro' files of the
appropriate project.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
lmc4c.dat 61 46749 Photometry of the central area of LMC4 (part 1)
n70.dat 74 42026 Photometry of the N70 region (part 2)
lmc2s.dat 74 66901 Photometry of the strip inside LMC2 (part 2)
lmc2o.dat 74 17672 Photometry of the LMC2 outer field (part 2)
n171.dat 74 27920 Photometry of the N171 region (part 2)
n214.dat 74 39435 Photometry of the southern N214 region (part 2)
smc1.dat 74 8705 Photometry inside SGS SMC1 (part 3)
lmc7.dat 74 44286 Photometry of the central area of LMC7 (part 4)
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See also :
I/221 : The Magellanic Catalogue of Stars - MACS (Tucholke+ 1996)
J/A+A/328/167 : BV photometry in supergiant shell LMC4 (Braun+, 1997)
ftp://ftp.astro.uni-bonn.de/pub/jbraun/ : J.M. Braun Home page
Byte-by-byte Description of file: *.dat
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Bytes Format Units Label Explanations
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1- 9 F9.6 --- FldSeq *Field Sequence (1)
11- 12 I2 h RAh Right Ascension J2000 (hours) (2)
14- 15 I2 min RAm Right Ascension J2000 (minutes)
17- 22 F6.3 s RAs Right Ascension J2000 (seconds)
24 A1 --- DE- Declination J2000 (sign) (2)
25- 26 I2 deg DEd Declination J2000 (degrees)
28- 29 I2 arcmin DEm Declination J2000 (minutes)
31- 35 F5.2 arcsec DEs Declination J2000 (seconds)
37- 42 F6.3 mag Vmag ? V magnitude
44- 48 F5.3 mag e_Vmag ? Photometric error in V (3)
50- 55 F6.3 mag B-V ? B-V colour
57- 61 F5.3 mag e_B-V ? Photometric error in B-V (3)
63- 68 F6.3 mag U-B ? U-B colour (4)
70- 74 F5.3 mag e_U-B ? Photometric error in U-B (3)
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Note (1):
Field Sequence is a floating point derived by field number (1-4) plus
star sequence number (at most 6 digits) divided by 1000000.
Note (2):
The given coordinates are derived by cross identification with MACS stars.
Note (3):
Photometric errors from DAOPHOT procedure.
Note (4):
These values are not available for all stars due to less deep exposures
in U or special problems - for the LMC4 ('lmc4c') no U images had been
taken. All data points had been selected to have B and V photometry.
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Acknowledgements: Jochen M. Braun
http://www.astro.uni-bonn.de/~jbraun
(End) Jochen M. Braun [Stw., Univ. Bonn], Patricia Bauer [CDS] 27-Jul-2001