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J/A+AS/126/73 BVRI photometry in dark globules (Lahulla+ 1997)
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BVRI photometric sequences for nine selected dark globules
Lahulla J.F., Aguirre A., Hilton J.
<Astron. Astrophys. Suppl. Ser. 126, 73 (1997)>
=1997A&AS..126...73L (SIMBAD/NED BibCode)
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ADC_Keywords: Globules ; Nebulae ; Photometry, UBVRI
Keywords: galaxies: general - ISM: clouds - ISM: dust, extinction
Abstract:
Using a CCD detector, BVRI photometry has been carried out in the
vicinity of nine Lynds dark nebulae. In conjunction with spectroscopic
data which could be obtained at a later stage, the data listed herein
could be used for possible distance determinations of the nine
nebulae.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
catalog.dat 76 299 *BVRI photometry in Lynds dark nebulae
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Note on catalog.dat: this file gathers the tables 2 to 11 of the
publication; the positions of the stars were added in December 1997
by B. Skiff (Lowell Observatory)
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Table 1: List of field centers:
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RA (2000) DE Object Field
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19 01 30 -5 27.3 LDN 544, B127 1
19 02 06 -5 18.2 LDN 549 2
19 04 09 -4 26.3 LDN 567, B132 3
19 06 52 -6 13.6 LDN 543, B134 4
21 44 15 +57 11.0 LDN 1113, B367 5
21 46 07 +47 16.8 LDN 1031 6
23 11 57 +61 39.9 LDN 1225 7
23 46 28 +63 15.4 LDN 1252a 8
23 46 27 +63 13.6 LDN 1252b 8
23 46 55 +63 21.8 LDN 1252-2 8
23 56 42 +59 44.6 LDN 1257 9
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LDN 544 (B127): small molecular cloud which is included in the catalogue of
molecular clouds (Clemens and Barvainis, 1988ApJS...68..257C)
and which has been the subject of deep IRAS photometry and CO
spectroscopy (Clemens et al., 1991ApJS...75..877C)
LDN 549: small molecular cloud which is included in the catalogue of
molecular clouds given by
Clemens and Barvainis (1988ApJS...68..257C)
LDN 567 (B132): extended molecular cloud which has been included in the list of
dark clouds of opacity 6 (Parker, 1988MNRAS.235..139P)
used in a search for IRAS associations
LDN 543 (B134): small molecular cloud which is included in the catalogues
of Clemens and Barvainis (1988ApJS...68..257C) and Parker
(1988MNRAS.235..139P). Interest has been shown in LDN 543 via
magnetisation (Porro and Silvestro, 1993A&A...275..563P) and
thermal emission studies (Lee and Roger, 1987ApJ...317..197L)
LDN 1031: CO12 and CO13 observations of LDN 1031 have been made by
Dobashi et al (1992AJ....104.1525D)
LDN 1225: small molecular cloud which has been the subject of NH3 and
C2S observations (Scappini and Codella 1996MNRAS.282..587S)
LDN 1252: extended dark cloud composed essentially of two lobes which are
presented as LDN1252a,b and LDN1252-2 respectively)
LDN 1257: dark nebula which according to Hilton and Lahulla
(1995A&AS..113..325H) has been the subject of interest in at
least eight research publications)
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Byte-by-byte Description of file: catalog.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Field Field
12- 13 I2 --- No Star number in the field
16- 20 F5.2 mag Vmag V magnitude
23- 26 F4.2 mag B-V ? B-V colour index
28- 31 F4.2 mag V-R V-R colour index
33- 36 F4.2 mag V-I V-I colour index
40- 41 I2 h RAh Right Ascension J2000 (hours) (1)
43- 44 I2 min RAm Right Ascension J2000 (minutes) (1)
46- 49 F4.1 s RAs Right Ascension J2000 (seconds) (1)
52 A1 --- DE- Declination J2000 (sign) (1)
53- 54 I2 deg DEd Declination J2000 (degrees) (1)
56- 57 I2 arcmin DEm Declination J2000 (minutes) (1)
59- 60 I2 arcsec DEs Declination J2000 (seconds) (1)
64- 76 A13 --- PosNote Note about the Position (1)
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Note (1): the star positions and their identification were determined
by Brian Skiff (bas@lowell.edu) in December 1997, using the
USNO-A1.0 catalog (D. Monet, US Naval Observatory, 1997) and the
Guide Star Catalog (Cat. <I/220>)
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Acknowledgements:
it is a pleasure to thank B. Skiff <bas@lowell.edu> who measured the
positions of the stars.
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(End) Patricia Bauer [CDS] 01-Oct-1997