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J/A+A/399/995       SOFI and ISOCAM observations of Cha II   (Persi+, 2003)
Near-infrared and ISOCAM observations of Chamaeleon dark cloud.
     Persi P., Marenzi A.R., Gomez M., Olofsson G.
    <Astron. Astrophys. 399, 995 (2003)>
    =2003A&A...399..995P
ADC_Keywords: Molecular clouds ; Photometry, infrared

Keywords: stars: formation - stars: low-mass, brown dwarfs -
          stars: pre-main sequence - infrared: stars

Abstract:
    An infrared study including ISOCAM images at 6.75 and 14.3µm of a
    large portion (28'x26') of the Chamaeleon II dark cloud and sub-arcsec
    resolution JHKs images of the central (4.9'x4.9') area is presented.
    Combining the ISOCAM observations with J and Ks photometry obtained
    with DENIS, we have found 12 young stars, of which 8 are previously
    identified sources.

Description:
    A region of approximately 28'x26' of Cha II, centered at
    RA = 13h 00min 47s, DE = -77° 06' 09" (2000), was surveyed with
    ISOCAM in raster mode at LW2(5-8.5µm) (TDT N.11500619) and
    LW3(12-18µm)(TDT N.11500620). All the frames were observed with a
    pixel field of view (PFOV) of 6", intrinsic integration time
    Tint=2.1s and ∼15s integration time per sky position. The total
    integration time was of 4472 s and 4474 s for LW2 and LW3,
    respectively.

    We obtained J, H, and Ks images of the central part of Cha II covering
    an area of4.9'x4.9' with the SOFI near-IR camera at the ESO 3.58m New
    Technology Telescope (NTT) on the night of April 28, 2000 under very
    good seeing conditions (∼0.3") SOFI uses a 1024x1024 pixel HgCdTe
    array and provides a field of view of 299"x299" with a scale of
    0.292"/pix.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1.dat        64      115   Coordinates and flux densities of the ISOCAM
                              sources in Cha II
table2.dat        69      197   Coordinates and near-IR photometry of the SOFI
                              sources in the central part of Cha II


See also:
 J/A+A/350/883 : R CrA ISOCAM observations (Olofsson+, 1999)
 J/A+A/357/219 : ISOCAM observations in Cha I. (Persi+, 2000)
 J/A+A/372/173 : ISOCAM observations of the rho Ophiuchi cloud (Bontemps+, 2001)
 J/A+A/376/907 : Near-IR Sources in the Cederblad 110 region (Persi+ 2001)
 J/A+A/319/184 : New WTTS in the Chamaeleon complex (Alcala+ 1997)
 J/A+A/341/L79 : Proper motions of faint ROSAT WTT stars (Terranegra+ 1999)


Byte-by-byte Description of file: table1.dat

   Bytes Format Units   Label     Explanations

   1-  3  I3    ---     SeqISO    Sequential number of ISOCAM source
   6-  7  I2    h       RAh       Right Ascension J2000 (hours)
   9- 10  I2    min     RAm       Right Ascension J2000 (minutes)
  12- 15  F4.1  s       RAs       Righ Ascension J2000 (seconds)
      17  A1    ---     DE-       Declination J2000 (sign)
  18- 19  I2    deg     DEd       Declination J2000 (degrees)
  21- 22  I2    arcmin  DEm       Declination J2000 (minutes)
  24- 25  I2    arcsec  DEs       Declination J2000 (seconds)
  27- 32  F6.2  mJy     F(LW2)    ? Flux in mJy at 6.75µm
  34- 38  F5.2  mJy     e_F(LW2)  ? Statistical flux error at 6.75µm
  40- 46  F7.2  mJy     F(LW3)    ? Flux in mJy at 14.3µm
  48- 52  F5.2  mJy     e_F(LW3)  ? Statistical flux error at 14.3µm
  54- 64  A11   --      Name      Identification


Byte-by-byte Description of file: table2.dat

   Bytes Format Units   Label     Explanations

   1-  3  I3    ----    SeqSOFI   Sequential number of SOFI source
   5-  6  I2    h       RAh       Right Ascension J2000 (hours)
   8-  9  I2    min     RAm       Right Ascension J2000 (minutes)
  11- 15  F5.2  s       RAs       Righ Ascension J2000 (seconds)
      17  A1    ---     DE-       Declination J2000 (sign)
  18- 19  I2    deg     DEd       Declination J2000 (degrees)
  21- 22  I2    arcmin  DEm       Declination J2000 (minutes)
  24- 27  F4.1  arcsec  DEs       Declination J2000 (seconds)
  30- 34  F5.2  mag     Jmag      ? J magnitude
  38- 41  F4.2  mag     e_Jmag    ? Statistical error in Jmag
  44- 48  F5.2  mag     Hmag      ? H magnitude
  52- 55  F4.2  mag     e_Hmag    ? Statistical error in Hmag
  58- 62  F5.2  mag     Ksmag     Ks magnitude
  66- 69  F4.2  mag     e_Ksmag   Statistical error in Ksmag


Acknowledgements: Paolo Persi 

(End)                                          Patricia Bauer [CDS]  24-Jan-2003