J/MNRAS/367/781 XMM observations of NGC 2547 (Jeffries+, 2006)
An XMM-Newton observation of the young open cluster NGC 2547:
coronal activity at 30 Myr.
Jeffries R.D., Evans P.A., Pye J.P., Briggs K.R.
<Mon. Not. R. Astron. Soc. 367, 781 (2006)>
=2006MNRAS.367..781J 2006MNRAS.367..781J
ADC_Keywords: Clusters, open ; X-ray sources ; Photometry, UBVRI
Keywords: stars: activity - stars: late-type - stars: coronae -
stars: rotation - X-rays: stars -
open clusters and associations: individual: NGC 2547
Description:
The following tables describe the results of a survey for X-ray
(0.3-3 keV) sources in the young (30Myr) NGC 2547 open cluster using
the XMM-Newton EPIC instrument.
Table 1 lists the details of X-ray sources which are correlated with
optical cluster members.
Table 2 catalogues the cross-identifications with optical catalogues
for the sources in Table 1 and derives their X-ray luminosities and
X-ray to bolometric flux ratios.
Table 3 lists the X-ray properties of sources which are uncorrelated
with cluster members.
Table 7 lists the correlations between cluster members detected by
XMM-Newton and those detected 7 years earlier by the ROSAT HRI
instrument, along with the X-ray luminosities and flux ratios as
determined by the HRI.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 288 108 XMM-Newton sources correlated with NGC 2547 members
table2.dat 115 108 Optical and X-ray properties of NGC 2547 members
table3.dat 288 55 XMM-Newton sources uncorrelated with NGC 2547 members
table7.dat 72 108 Cross-correlations between cluster members detected
by XMM-Newton and the ROSAT HRI
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See also:
B/xmm : XMM-Newton Observation Log (XMM-Newton SOC, 2002)
IX/37 : XMM-Newton Serendipitous Source Cat. (1XMM) (XMM-SSC, 2003)
J/MNRAS/335/291 : BVI photometry of NGC 2547 (Naylor+, 2002)
J/MNRAS/351/1401 : RcIcZ photometry of NGC 2547 (Jeffries+, 2004)
J/MNRAS/358/13 : Faint dwarfs in NGC 2547 (Jeffries+, 2005)
Byte-by-byte Description of file: table1.dat table3.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- SAS SAS (analysis system) source identifier
6- 9 A4 --- --- [XMMU]
11- 26 A16 --- XMMU XMM-Newton source identification
29- 30 I2 h RAh Right ascension (J2000)
32- 33 I2 min RAm Right ascension (J2000)
35- 39 F5.2 s RAs Right ascension (J2000)
42 A1 --- DE- Declination sign (J2000)
43- 44 I2 deg DEd Declination (J2000)
46- 47 I2 arcmin DEm Declination (J2000)
49- 52 F4.1 arcsec DEs Declination (J2000)
55- 59 F5.2 arcsec ePos Positional error (1-sigma)
61- 67 F7.2 -- ML Maximum likelihood
69- 77 E9.2 ct/s PNTot ?=9.999e+99 PN count rate in total band
(0.3-3keV) (1)
79- 87 E9.2 ct/s e_PNTot ?=9.999e+99 error in PNTot (1)
89- 97 E9.2 ct/s PNS ?=9.999e+99 PN count rate in soft band
(0.3-1keV) (1)
99-107 E9.2 ct/s e_PNS ?=9.999e+99 error in PNS (1)
109-117 E9.2 ct/s PNH ?=9.999e+99 PN count rate in hard band
(1.0-3keV) (1)
119-127 E9.2 ct/s e_PNH ?=9.999e+99 error in PNH (1)
129-134 F6.3 --- PNHR ?=-2.00 PN hardness ratio (H-S)/(H+S) (2)
136-140 F5.3 --- e_PNHR ?=-2.00 error in PNHR
143-151 E9.2 ct/s M1Tot ?=9.999e+99 M1 count rate in total band
(0.3-3keV) (1)
153-161 E9.2 ct/s e_M1Tot ?=9.999e+99 error in M1Tot (1)
163-171 E9.2 ct/s M1S ?=9.999e+99 M1 count rate in soft band
(0.3-1keV) (1)
173-181 E9.2 ct/s e_M1S ?=9.999e+99 error in M1S (1)
183-191 E9.2 ct/s M1H ?=9.999e+99 M1 count rate in hard band
(1.0-3keV) (1)
193-201 E9.2 ct/s e_M1H ?=9.999e+99 error in M1H (1)
203-208 F6.3 --- M1HR ?=-2.00 M1 hardness ratio (H-S)/(H+S ) (2)
210-214 F5.3 --- e_M1HR ?=-2.00 error in M1HR
217-225 E9.2 ct/s M2Tot ?=9.999e+99 M2 count rate in total band
(0.3-3keV) (1)
227-235 E9.2 ct/s e_M2Tot ?=9.999e+99 error in M2Tot (1)
237-245 E9.2 ct/s M2S ?=9.999e+99 M2 count rate in soft band
(0.3-1keV) (1)
247-255 E9.2 ct/s e_M2S ?=9.999e+99 error in M2S (1)
257-265 E9.2 ct/s M2H ?=9.999e+99 M2 count rate in hard band
(1.0-3keV) (1)
267-275 E9.2 ct/s e_M2H ?=9.999e+99 error in M2H (1)
277-282 F6.3 --- M2HR ?=-2.00 M2 hardness ratio (H-S)/(H+S) (2)
284-288 F5.3 --- e_M2HR ?=-2.00 error in M2HR
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Note (1): A value of 9.999e+99 indicates that no count rate was available for
this instrument or energy band.
Note (2): A value of -2.000 indicates that no hardness ratio could be calculated
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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 I3 --- SAS SAS source identification number
5- 11 A7 --- NTJ Identifier used by Naylor et al. (2002,
Cat. J/MNRAS/335/291,
Cl* NGC 2547 NTJ NN-NNNN in Simbad)
13- 16 F4.2 arcsec D(X-NTJ) Separation between XMM source and NTJ
counterpart
18- 23 F6.3 mag Vmag Apparent V magnitude (Johnson)
25- 30 F6.3 mag B-V ? B-V colour index (Johnson)
32- 37 F6.3 mag V-Ic ? V-Ic colour index (Cousins)
40- 46 A7 --- JND Identifier used by Jeffries et al. (2004,
Cat. J/MNRAS/351/1401,
Cl* NGC 2547 JND FF-NNNN in Simbad)
48- 51 F4.2 arcsec D(X-JND) ? Separation between XMM source and JND
counterpart
53- 58 F6.3 mag Icmag ? Apparent I magnitude (Cousins)
60- 65 F6.3 mag Rc-Ic ? Rc-Ic colour (Cousins) index
67- 75 E9.3 --- (LX/Lbol)1 ? LX/Lbol using B-V for bolometric correction
77- 85 E9.3 --- (LX/Lbol)2 ? LX/Lbol using V-I for bolometric correction
87- 95 E9.3 --- (LX/Lbol)3 ? LX/Lbol using R-I for bolometric correction
97-105 E9.3 10-7W LX X-ray luminosity (0.3-3 keV)
107-115 E9.3 10-7W e_LX Uncertainty in X-ray luminosity
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Byte-by-byte Description of file: table7.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- SAS SAS source identification number
5- 7 I3 --- [JT98] RX ROSAT HRI identifier used by
Jeffries & Tolley (1998MNRAS.300..331J 1998MNRAS.300..331J) (1)
9- 12 F4.1 arcsec D(X-HRI) ? Separation between XMM and HRI sources
14- 22 E9.3 ct/s HRIcr HRI count rate (2)
24- 32 E9.3 ct/s e_HRIcr Error in HRI count rate (2)
34- 42 E9.3 --- (LX/Lbol)R1 LX/Lbol (for HRI) using B-V for bolometric
correction
44- 52 E9.3 --- (LX/Lbol)R2 LX/Lbol (for HRI) using V-I for bolometric
correction
54- 62 E9.3 --- (LX/Lbol)R3 LX/Lbol (for HRI) using R-I for bolometric
correction
64- 72 E9.3 10-7W LX(HRI) X-ray (for HRI) luminosity (0.3-3 keV)
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Note (1): If HRI identifier is zero, then the subsequent count rates and
luminosities are upper limits.
Note (2): HRI count rates were modified from the Jeffries and Tolley (1998,
Cat. J/MNRAS/300/331) values as discussed in section 5.2.
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Acknowledgements:
Rob Jeffries, rdj(at)astro.keele.ac.uk
(End) Patricia Vannier [CDS] 10-Jan-2006