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J/A+A/540/A58       CT1T2 photometry of 26 LMC cluster            (Piatti, 2012)

Washington photometry of 26 moderately young small angular size clusters in the Large Magellanic Cloud. Piatti A.E. <Astron. Astrophys. 540, A58 (2012)> =2012A&A...540A..58P
ADC_Keywords: Magellanic Clouds ; Associations, stellar ; Photometry, CMT1T2V Keywords: techniques: photometric - galaxies: star clusters - galaxies: individual: LMC Abstract: With the aim of enlarging the number of studied LMC clusters in the age range 8.0~<log(t)~<9.0, we focus here on a sample of mostly unstudied cluster candidates. We present, for the first time, CCD Washington CT1T2 photometry of stars in the field of 26 LMC clusters. The studied clusters turned out to be small angular size objects with ages within the age range 8.0~<log(t)~< 9.0, which are projected or immersed in dense star fields. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 97 26 Star clusters in the LMC table2.dat 79 90396 CT1T2 data of stars in the field of NGC 2093 table3.dat 48 26 Fundamental parameters of LMC clusters
See also: J/AcA/50/337 : OGLE LMC star clusters (Pietrzynski+, 2000) J/A+A/517/A50 : Young SMC/LMC star clusters ages + luminosities (Glatt+, 2010) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 10 A10 --- Cluster Star Cluster 12- 13 I2 h RAh Right ascension (J2000) 15- 16 I2 min RAm Right ascension (J2000) 18- 19 I2 s RAs Right ascension (J2000) 21 A1 --- DE- Declination sign (J2000) 22- 23 I2 deg DEd Declination (J2000) 25- 26 I2 arcmin DEm Declination (J2000) 28- 29 I2 arcsec DEs Declination (J2000) 31- 36 F6.2 deg GLON Galactic longitude 38- 43 F6.2 deg GLAT Galactic latitude 45- 54 A10 "YYYY/MM/DD" Date Observation date 56- 59 I4 s ExpC Exposure time in C band 61- 63 I3 s ExpR Exposure time in R band 65- 67 I3 s ExpI Exposure time in I band 69- 73 F5.3 --- Air.C Airmass in C band 75- 79 F5.3 --- Air.R Airmass in R band 81- 85 F5.3 --- Air.I Airmass in I band 87- 89 F3.1 arcsec See.C Seeing in C band 91- 93 F3.1 arcsec See.R Seeing in R band 95- 97 F3.1 arcsec See.I Seeing in I band
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
2- 7 I6 --- Seq [102814/440803] Sequential number 9- 16 F8.3 pix Xpos X position (scale and orientation unspecified) 18- 25 F8.3 pix Ypos Y position (scale and orientation unspecified) 28- 33 F6.3 mag T1mag Washington T1 magnitude 34 A1 --- --- [0] 38- 42 F5.3 mag e_T1mag rms uncertainty on T1mag 43 A1 --- --- [0] 46- 51 F6.3 mag C-T1 Washington C-T1 colour index 52 A1 --- --- [0] 56- 60 F5.3 mag e_C-T1 rms uncertainty on C-T1 61 A1 --- --- [0] 64- 69 F6.3 mag T1-T2 Washington T1-T2 colour index 70 A1 --- --- [0] 74- 78 F5.3 mag e_T1-T2 rms uncertainty on T1-T2 79 A1 --- --- [0]
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 10 A10 --- Cluster Star Cluster 12- 15 I4 pix Xpos X position of cluster centre 17- 20 I4 pix Ypos Y position of cluster centre 22- 23 I2 arcsec r Radius of cluster (2) 25- 26 I2 arcsec e_r rms uncertainty on r 28- 31 F4.2 mag E(B-V) Redenning 33- 36 F4.2 [yr] logt Age 38- 41 F4.2 [yr] e_logt rms uncertainty on Age 43- 46 F4.2 [yr] logtl ? Age from literature 48 I1 --- r_logtl [1/2]? Reference for logtl (1)
Note (1): References as follows: 1 = Pietrzynski & Udalski (2000, Cat. J/AcA/50/337) 2 = Glatt et al. (2010, Cat. J/A+A/517/A50) Note (2): the cluster radius is defined as the distance from the cluster centre where the number of stars equals that of the background.
Acknowledgements: Andres Piatti, andres (at)iafe.uba.ar References: Piatti, 2011MNRAS.418L..40P
(End) Patricia Vannier [CDS] 15-Mar-2012
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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