J/A+A/400/521 Omega Cen XMM observations (Gendre+, 2003)
An XMM-Newton observation of the globular cluster Omega Centauri.
Gendre B., Barret D., Webb N.A.
<Astron. Astrophys. 400, 521 (2003)>
=2003A&A...400..521G 2003A&A...400..521G
ADC_Keywords: Clusters, globular ; X-ray sources
Keywords: globular clusters: individuals (Omega Centauri) - X-ray: binaries -
stars: neutron - novae, cataclysmic variables - binaries: general
Description:
We have observed the globular cluster Omega Cen (NGC 5139) with
XMM-Newton on August 13th, 2001. The observation lasted 37ks and was
performed with a medium filter. These tables list all the detected
sources, and the spectral properties of selected sources within the
field of view. For each source, we indicate its position, count rate,
correlation with previous X-ray observation, and associated errors.
For selected sources we also indicate its flux.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 70 27 Sources detected within the half mass radius
table2.dat 65 119 Sources detected outside the half mass radius
table3.dat 75 68 X-ray sources correlated
table5.dat 73 35 Spectral properties of selected sources
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See also:
IX/37 : XMM-Newton Serendipitous Source Catalogue (1XMM) (XMM-SSC, 2003)
B/xmm : XMM-Newton Observation Log (XMM-Newton Science Operation Center, 2002)
B/chandra : The Chandra Archive Log (CXC, 2002)
IX/10 : ROSAT All-Sky Bright Source Catalogue (1RXS) (Voges+ 1999)
IX/30 : Second ROSAT PSPC Catalog (ROSAT, 2000)
IX/13 : The 2E Catalogue (Harris+ 1994)
J/ApJ/461/127 : The Einstein Two-Sigma Catalog (Moran+ 1996)
J/AJ/115/2587 : Einstein IPC database ultrasoft survey (Thompson+ 1998)
J/A+AS/120/139 : Variables in Omega Cen Fields 5139A-C (Kaluzny+ 1996)
J/A+AS/122/471 : Variables in Omega Cen Fields 5139D-F (Kaluzny+ 1997)
Byte-by-byte Description of file: table1.dat table2.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- INS [PN MOS] EPIC-PN instrument detection (G1)
5- 8 I4 --- SRC Source number
12- 13 I2 h RAh Right ascension (J2000)
15- 16 I2 min RAm Right ascension (J2000)
18- 21 F4.1 s RAs Right ascension (J2000)
25 A1 --- DE- Declination sign
26- 27 I2 deg DEd Declination (J2000)
29- 30 I2 arcmin DEm Declination (J2000)
32- 35 F4.1 arcsec DEs Declination (J2000)
39- 43 F5.2 arcsec e_Pos Statistical position error
45- 49 F5.2 10-2ct/s CRate Count rate
51- 55 F5.2 10-2ct/s e_CRate Count rate error
58- 60 A3 --- M1 [Yes No] MOS1 detection
63- 65 A3 --- M2 [Yes No] MOS2 detection
68- 70 A3 --- Core [Yes No] Core source (table1.dat only)
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- SRC Source number (1)
7- 8 I2 h RAh Right ascension (J2000)
10- 11 I2 min RAm Right ascension (J2000)
13- 16 F4.1 s RAs Right ascension (J2000)
20 A1 --- DE- Declination sign
21- 22 I2 deg DEd Declination (J2000)
24- 25 I2 arcmin DEm Declination (J2000)
27- 30 F4.1 arcsec DEs Declination (J2000)
35- 36 I2 h RACh ? Chandra right ascension (J2000)
38- 39 I2 min RACm ? Chandra right ascension (J2000)
41- 44 F4.1 s RACs ? Chandra right ascension (J2000)
48 A1 --- DEC- Chandra declination sign
49- 50 I2 deg DECd ? Chandra declination (J2000)
52- 53 I2 arcmin DECm ? Chandra declination (J2000)
55- 58 F4.1 arcsec DECs ? Chandra declination (J2000)
60- 64 F5.2 arcsec e_RACs ? Chandra statistical position error (RA)
66- 69 F4.2 arcsec e_DECs ? Chandra statistical position error (DEC)
71- 73 A3 --- ROSAT ROSAT source label ([JVH94] NGC 5139 NNa)
75 A1 --- EINST EINSTEIN source label ([HG83b] NGC 5139 A)
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Note (1): We have indicated in this table only the sources correlated
with other X-ray observations. There are three OGLEGC sources which
are associated with X-ray sources (OGLEGC 15 and 22 with two Chandra
sources, OGLEGC 30 with XMM-Newton source 29). Their positions from
Kaluzny et al., 1996, Cat. J/A+AS/120/139 are:
OGLEGC15 13h 26min 47.42s -47° 36' 00.4"
OGLEGC22 13h 26min 08.33s -47° 30' 33.0"
OGLEGC30 13h 26min 53.33s -47° 18' 22.9"
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- SRC Source number
4- 13 A10 --- n_SRC Note on SRC
15- 16 A2 --- MOD Model name (1)
18- 21 A4 --- STAT Statistic used (Chi or Cash)
22- 26 F5.1 10+20cm-2 NH ? Column of density
27 A1 --- u_NH [)]
28- 30 I3 10+20cm-2 lNH ? Lower value of NH interval
31 A1 --- --- [-]
32- 34 I3 10+20cm-2 uNH ? Upper value of NH interval
37- 40 F4.1 --- Param Model parameter value (2)
43- 46 F4.1 --- lParam Lower value of Param interval
47 A1 --- --- [-]
48- 51 F4.1 --- uParam Upper value of Param interval
55- 59 F5.2 --- Chi ? Reduced chi2 (or Cash value)
62- 63 I2 --- DOF ? Degrees of freedom
66- 68 I3 10-15mW/m2 Flux ? Flux in X-ray
70- 71 I2 10-15mW/m2 e_Flux ? Error in Flux
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Note (1): Model names:
TB : Thermal Bremsstrahlung
BB : Black Body
PL : Power Law
2T : 2 Temperature Raymond Smith model
Note (2): The unity of this field depends on the model used.
Either keV for temperatures or a spectral index
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Global notes:
Note (G1): EPIC-PN instrument detection:
PN : source detected by the EPIC-PN instrument
MOS : source not detected by the EPIC-PN instrument
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Acknowledgements: Bruce Gendre
(End) Patricia Bauer [CDS] 03-Mar-2003