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J/A+A/401/543       XMM-Newton observations of NGC 1333      (Preibisch, 2003)
XMM-Newton study of the star forming region NGC 1333.
    Preibisch T.
   <Astron. Astrophys. 401, 543 (2003)>
   =2003A&A...401..543P
ADC_Keywords: Clusters, open ; X-ray sources ; Stars, pre-main sequence

Keywords: open clusters and associations: individual: NGC 1333 -
          stars: formation - stars: coronae - stars: low-mass, brown dwarfs -
          stars: pre-main sequence - X-rays: stars

Description:
    The NGC 1333 star forming region was observed with the European Photon
    Imaging Cameras (EPIC) on board XMM-Newton on 27/28 February 2002.
    The observation covered a period of about 14 hours and has a total
    MOS-equivalent exposure time of 235 ksec. In addition to 46 bright
    X-ray sources revealed by source detection routines, weak X-ray
    emission at the positions of 40 X-ray sources detected originally
    in a recent Chandra observation of NGC 1333 was also detected.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1.dat        66      116   X-ray sources in NGC 1333 and their count-rates
                             in the XMM-Newton EPIC-MOS and PN images
table2.dat        89       38   Spectral parameters derived in the fits to
                             the XMM-Newton spectra


See also:
  J/A+AS/106/165 : Near-IR imaging photometry of NGC 1333 (Aspin+ 1994)
  J/ApJ/575/354  : Young stellar objects in the NGC 1333 (Getman+, 2002)
  J/AJ/127/1131  : NGC 1333 low-mass stars infrared photometry (Wilking+, 2004)


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

   Bytes Format Units   Label    Explanations

   1-  3  A3    ---     Obs      Observations (CXO or XMM) (G1)
   5- 19  A15   ---     Jname    NGC1333 J designation (HHMMSS.s+DDMMSS) (G1)
      21  A1    ---     f_Jname  [:*] Detection remarks (1)
      24  A1    ---     l_CRMOS  Limit flag on CRMOS
  25- 29  F5.1  ct/ks   CRMOS    ? EPIC-MOS count rate
  31- 33  F3.1  ct/ks   e_CRMOS  ? rms uncertainty on CRMOS
      35  A1    ---     l_CRPN   Limit flag on CRPN
  36- 40  F5.1  ct/ks   CRPN     ? PN count rate
  42- 44  F3.1  ct/ks   e_CRPN   ? rms uncertainty on CRPN
  46- 66  A21   ---     Cpart    Optical/Infrared counterpart

Note (1): Flags mean the following:
     : = sources that are only marginally detected in the XMM-Newton data,
     * = XMM-Newton sources that are resolved into two sources in the
         Chandra image.


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

   Bytes Format Units     Label    Explanations

   1-  3  A3    ---       Obs      Observations (CXO or XMM) (G1)
   5- 19  A15   ---       Jname    NGC1333 J designation (HHMMSS.s+DDMMSS) (G1)
  21- 23  F3.1  10+22cm-2 NH       Mean value of hydrogen column density
  25- 27  F3.1  10+22cm-2 NHl      Lower value of NH
      28  A1    ---       ---      [-]
  29- 31  F3.1  10+22cm-2 NHu      Upper value of NH
  33- 36  F4.1  keV       kT       Mean value of plasma temperature
  38- 40  F3.1  keV       kTl      Lower value of kT
      41  A1    ---       ---      [-]
  42- 44  F3.1  keV       kTu      ? Upper value of kT
  46- 48  F3.1  keV       kT2      ? Second mean value of plasma temperature (1)
  50- 52  F3.1  keV       kT2l     ? Lower value of kT2
      53  A1    ---       ---      [-]
  54- 57  F4.1  keV       kT2u     ? Upper value of kT2
  59- 63  F5.2  10+23W    LX       Extinction-corrected source luminosity
                                    integrated over the 0.1-10 keV band
  65- 68  F4.2  10+23W    e_LX     rms uncertainty on LX (1030erg/s)
  70- 89  A20   ---       Rem      Remarks

Note (1): A second temperature kT2 is given for those sources that
    required a two-temperature model for an acceptable fit.


Global notes:

Note (G1): CXO designations lists the sources detected by Chandra,
    XMM designations lists the sources only seen by XMM-Newton. Each
    source name contains the J2000 coordinates. The sources are identified
    as CXONGC1333 JHHMMSS.s+DDMMSS and XMMU JHHMMSS.s+DDMMSS


History:
    From electronic version of the journal
(End)                         James Marcout, Patricia Bauer [CDS]    13-May-2003