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 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:
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FileName Lrecl Records Explanations
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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 85 38 Spectral parameters derived in the fits to
the XMM-Newton spectra
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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
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Bytes Format Units Label Explanations
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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
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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.
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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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
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Note (1): A second temperature kT2 is given for those sources that
required a two-temperature model for an acceptable fit.
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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
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History:
From electronic version of the journal
(End) James Marcout, Patricia Bauer [CDS] 13-May-2003