Access to Astronomical Catalogues

J/A+A/527/A145      Chamaeleon I 870um sources               (Belloche+, 2011)
The end of star formation in Chamaeleon I ?
A LABOCA census of starless and protostellar cores.
   Belloche A., Schuller F., Parise B., Andre P., Hatchell J., Jorgensen J.K.,
   Bontemps S., Weiss A., Menten , K.M., Muders D.
  <Astron. Astrophys. 527, A145 (2011)>
  =2011A&A...527A.145B
ADC_Keywords: Molecular clouds ; Millimetric/submm sources

Keywords: stars: formation - ISM: individual objects: Chamaeleon I -
          ISM: structure - evolution - dust, extinction - stars: protostars

Abstract:
    Chamaeleon I is the most active region in terms of star formation in
    the Chamaeleon molecular cloud complex. Although it is one of the
    nearest low-mass star forming regions, its population of prestellar
    and protostellar cores is not known and a controversy exists
    concerning its history of star formation.

    Our goal is to search for prestellar and protostellar cores and
    characterize the earliest stages of star formation in this cloud.

Description:
    Table 2 lists the sources extracted with GAUSSCLUMPS from the filtered
    870 micron continuum emission map of Chamaeleon I obtained with the
    bolometer camera LABOCA at the APEX telescope. These sources are
    listed in the order in which they were found by GAUSSCLUMPS, i.e.
    roughly in order of decreasing peak flux density.

    The 870 micron dust continuum emission map of the Chamaeleon I
    molecular cloud is available in FITS format. The data were obtained
    with the bolometer camera LABOCA at the APEX telescope. They were
    calibrated, reduced, co-added, gridded, smoothed to an effective
    angular resolution of 21.2" (FWHM), and written in FITS format with
    the BoA software. The flux density unit is Jy/21.2"-beam. The
    coordinates are equatorial (J2000) and the offsets are in RADIO
    projection.
Objects:
    -----------------------------------------
       RA (2000) DE      Designation(s)
    -----------------------------------------
    11 06 48  -77 18.0   Cham I = NAME Cha 1
    -----------------------------------------

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table2.dat        96      118   Sources extracted with Gaussclumps in the 870um
                            continuum sum map of Cha I at scale 5, and
                            possible associations found in the SIMBAD database
cha1_870.fit    2880    10039   FITS file of the 870 micron continuum emission
                            map of Chamaeleon I


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

   Bytes Format Units   Label     Explanations

   1-  2  I2    ---     Seq       [1/84] Source sequential number
   4-  5  I2    h       RAh       Right ascension (J2000)
   7-  8  I2    min     RAm       Right ascension (J2000)
  10- 14  F5.2  s       RAs       Right ascension (J2000)
      16  A1    ---     DE-       Declination sign (J2000)
  17- 18  I2    deg     DEd       Declination (J2000)
  20- 21  I2    arcmin  DEm       Declination (J2000)
  23- 26  F4.1  arcsec  DEs       Declination (J2000)
  28- 32  F5.3  Jy      Fp        Peak flux density at 870um (in Jy/21.2"-beam)
  34- 38  F5.3  Jy      Ftot      Total flux density at 870um
  40- 44  F5.1  arcsec  amaj      Major axis (FWHM)
  46- 49  F4.1  arcsec  amin      Minor axis (FWHM)
  51- 55  F5.1  deg     PA        [-90/90] Position angle (east from north)
  57- 60  F4.1  arcsec  Size      ? Mean source size
                                    (geometrical mean of amaj and amin)
  62- 63  A2    ---     Type      Type of source based on the possible
                                   associations found in the SIMBAD database (1)
  65- 87  A23   ---     SIMBAD    Source found in the SIMBAD database within the
                                   FWHM ellipse (2)
  89- 91  A3    ---     Stype     SIMBAD type of the SIMBAD source
  93- 96  F4.1  arcsec  Dist      ? Distance of the possibly associated SIMBAD
                                    source to the fitted peak position of the
                                    LABOCA source

Note (1): Type of source based on the associations found in the SIMBAD
          database as follows:
  C  = starless core or Class 0 protostar
  S  = young stellar object (Class I or more evolved)
  Sc = candidate association with a YSO
  R  = residual of a stronger nearby source
  A  = artefact
Note (2): 2MASS was abbreviated to 2M.



Acknowledgements:
    Arnaud Belloche, belloche(at)mpifr-bonn.mpg.de
(End)                                        Patricia Vannier [CDS]  06-Jan-2011