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Table 1

Summary of the XMM-Newton/EPIC observations available for the Arches cluster.

Good time exposure coverage (%)
Date Observation (ks) MOS Cloud Cluster
ID M1 M2 pn Noisy CCD M1 M2 pn M1 M2 pn
2000-09-19 0112970401 21 21 16 – 100 100 86 100 100 100
2000-09-21 0112970501 7 9 3 – 96 99 87 99 100 100
2001-09-04 0112972101 20 20 17 – 100 100 40 100 100 21
2002-02-26 0111350101 43 42 36 – 100 100 56 100 100 94
2002-10-02 0111350301 6 6 3 – 99 100 47 100 100 82
2004-03-28 0202670501 10 14 2 – 100 100 100 100 100 100
2004-03-30 0202670601 27 27 17 – 100 100 99 100 100 100
2004-08-31 0202670701 64 74 40 M2-5 100 100 100 100 100 100
2004-09-02 0202670801 83 89 50 M2-5 100 100 100 100 100 100
2006-02-27 0302882601 2 2 1 – 0 100 55 0 100 91
2006-09-08 0302884001 6 6 4 M1-4 100 99 33 100 100 7
2007-02-27 0506291201 18 20 a – 100 87 a 100 96 a
2007-03-30 0402430701 23 24 16 M2-5 0 100 100 0 100 100
2007-04-01 0402430301 54 58 29 M1-4, M2-5 0 100 99 0 100 100
2007-04-03 0402430401 39 40 23 M1-4 0 100 100 0 100 100
2007-09-06 0504940201 8 9 5 M2-5 98 99 34 98 100 23
2008-03-04 0511000301 4 4 2 – 0 100 64 0 100 100
2008-03-23 0505670101 68 73 51 M1-4, M2-5 0 100 b 0 100 b
2008-09-23 0511000401 4 4 4 M1-4, M2-5 99 99 41 98 100 41
2009-04-01 0554750401 32 32 24 – 0 100 98 0 100 100
2009-04-03 0554750501 40 41 31 M1-4 0 100 99 0 100 100
2009-04-05 0554750601 36 37 25 M1-4 0 100 99 0 100 100
Total Imaging 615 652 399
exposure (ks) Cloud Cluster
Spectroscopy 317 652 276 315

Notes. For each observation and instrument, we report the total good-time interval exposure after flare screening. For a number of observations, the Arches cluster lies at the position of the CCD 6 of MOS 1, which is out of service. We indicate the CCDs identified as noisy for MOS (data not used for the analysis) and the spatial coverage of the pn (incomplete due to dead columns) for our two spectral extraction regions (see Fig. 10). Only observations with a spatial coverage of the region greater than 85% were used for the spectral analysis.

(a)

The pn camera was in timing mode for this observation.

(b)

The pn data of this observation were not taken into account for the spectrum extraction, because the pn spatial coverage of the background region (Fig. 10) was to low.

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