Planck early results
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Table 1

Observation log of the XMM-Newton validation follow-up.

Name S/N RASZ DecSZ OBSID Filter t exp Clean fraction Confirmed
(deg) (deg) (ks EPN) (MOS/EPN)

PLCK G277.8−51.7 6.1 43.596 –58.964 0656200301 THIN 16.5 0.5/0.2 Y  ESZ
PLCK G334.8−38.0* 4.9 313.177 −61.202 0656200701 THIN 21.2 0.8/0.5 Y
PLCK G250.0+24.1 4.9 143.042 −17.647 0656200401 THIN 10.4 0/0 Y
PLCK G286.3−38.4 4.7 59.800 −72.067 0656200501 THIN 13.6 0.7/0 Y
PLCK G004.5−19.5 4.6 289.226 −33.509 0656201001 MED 10.0 1/0.6 Y
PLCK G214.6+36.9* 4.2 137.206 14.642 0656200101 THIN 17.6 0.7/0.7 Y
PLCK G070.8−21.5 4.1 321.410 19.941 0656200201 MED 25.4 0.4/0.1 ...
PLCK G317.4−54.1 4.1 355.247 −61.038 0656200801 THIN 12.0 0.9/0.7 ...
PLCK G226.1−16.9 4.0 93.139 −19.040 0656200601 THIN 10.0 0.7/0.4 ...
PLCK G343.4−43.4 3.9 320.145 −53.631 0656200901 MED 10.0 0.9/0.9 ...

PLCK G287.0+32.9 10.2 177.714 −28.074 0656201201 THIN 10.0 0.7/0.4 Y  ESZ
PLCK G171.9−40.7 10.7 48.231 8.380 0656201101 THIN 10.0 1/0.8 Y  ESZ
PLCK G285.0−23.7 8.3 110.805 −73.457 0656201401 THIN 10.0 0.9/0.6 Y  ESZ
PLCK G271.2−31.0 8.3 87.315 −62.087 0656201301 THIN 10.0 1/1 Y  ESZ
PLCK G262.7−40.9 7.4 69.624 −54.309 0656201601 THIN 14.7 1/0.9 Y  ESZ
PLCK G308.3−20.2* 7.4 229.588 −81.523 0656201501 THIN 10.0 1/1 Y  ESZ
PLCK G337.1−26.0* 6.4 288.583 −59.513 0656201701 THIN 13.7 1/1 Y  ESZ
PLCK G292.5+22.0 6.2 180.241 −39.889 0656201801 MED 13.2 0.6/0.5 Y  ESZ
PLCK G205.0−63.0 6.1 41.593 −20.527 0656201901 THIN 11.7 1/1 Y
PLCK G241.2−28.7 5.9 85.768 −36.022 0656202001 THIN 10.0 1/1 Y
PLCK G286.6−31.3 5.9 82.8430 −75.164 0656202101 THIN 10.0 0.7/0.3 Y  ESZ
PLCK G018.7+23.6 5.6 255.553 −1.004 0656202201 THIN 7.2 1/1 Y
PLCK G100.2−30.4 5.5 350.589 28.563 0656202301 THIN 10.0 0.9/0.7 Y
PLCK G272.9+48.8 5.1 173.310 −9.479 0656202601 THIN 11.7 0/0 Y
PLCK G285.6−17.2 5.2 130.956 −71.190 0656202501 THIN 10.0 1/1 Y  ESZ

Notes. The 10 targets of the pilot programme are listed first. Column (1): Planck source name. Asterisked objects denote sources that were found to be multiple systems in X-rays. Column (2): signal-to-noise ratio of the detection of the Planck cluster candidate in the version of the Planck-HFI maps available for each programme. Columns (3) and (4): right ascension and declination of the Planck source (J2000). Columns (5)–(8): XMM-Newton observation identification number, filter used, on-source exposure time with the epn camera and fraction of useful time after cleaning for periods of high background due to soft proton flares (emos and epn camera, see also Sect. 2.5). Column (9): confirmed clusters are flagged. Those included in the ESZ sample (Planck Collaboration 2011d) are also identified.

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