Free Access

Table 1

Observations of the M 31 monitoring.

Telescope/Instrument ObsID Exposure timea [ks] Start dateb JDb Offsetc
PN MOS1 MOS2 HRC-I [UT] 2 450 000+ RA [″] Dec [″]

2007/8
Chandra HRC-I 8526 19.9 2007-11-07.63 4412.14 −0.3 0.3
Chandra HRC-I 8527 20.0 2007-11-17.76 4422.26 −0.3 0.3
Chandra HRC-I 8528 20.0 2007-11-28.79 4433.29 −0.2 0.2
Chandra HRC-I 8529 18.9 2007-12-07.57 4442.07 −0.3 0.1
Chandra HRC-I 8530 19.9 2007-12-17.49 4451.99 −0.3 0.1
XMM-Newton EPIC 0505720201 22.3 26.9 26.9 2007-12-29.57 4464.07 0.0 0.8
XMM-Newton EPIC 0505720301 20.4 26.4 26.4 2008-01-08.29 4473.79 1.3 1.4
XMM-Newton EPIC 0505720401 17.2 21.2 20.9 2008-01-18.63 4484.13 −3.3 −0.5
XMM-Newton EPIC 0505720501 9.9 15.6 14.9 2008-01-27.94 4493.44 −0.1 1.2
XMM-Newton EPIC 0505720601 15.1 20.7 20.7 2008-02-07.20 4503.75 0.2 1.0

2008/9
Chandra HRC-I 9825 20.2 2008-11-08.34 4778.84 −0.3 0.2
Chandra HRC-I 9826 19.9 2008-11-17.14 4787.64 −0.4 0.3
Chandra HRC-I 9827 20.0 2008-11-28.24 4798.74 −0.3 0.3
Chandra HRC-I 9828 20.0 2008-12-07.41 4807.91 −0.4 0.1
Chandra HRC-I 9829 10.1 2008-12-18.02 4818.52 −0.5 0.0
Chandra HRC-I 10838 10.0 2008-12-18.49 4818.99 −0.4 0.1
XMM-Newton EPIC 0551690201 15.6 21.2 21.2 2008-12-30.14 4830.64 0.9 1.1
XMM-Newton EPIC 0551690301 16.3 20.9 20.9 2009-01-09.26 4840.76 2.1 1.0
XMM-Newton EPIC 0551690401 6.1 9.9 10.0 2009-01-15.90 4847.40 0.0 1.2
XMM-Newton EPIC 0551690501 13.6 19.5 18.7 2009-01-27.31 4858.81 1.8 1.4
XMM-Newton EPIC 0551690601 12.7 5.5 5.5 2009-02-04.56 4867.06 −1.7  −0.6
Chandra HRC-I 10683 19.9 2009-02-16.90 4879.40  −0.5 0.1
Chandra HRC-I 10684 18.7 2009-02-26.17 4888.67  −0.5 0.1

Notes. 

(a)

Dead-time corrected; for XMM-Newton EPIC after screening for high background.

(b)

Start time of observations; for XMM-Newton EPIC the PN start time was used.

(c)

Offset of image WCS (world coordinate system) to the WCS of the catalogue by Kaaret (2002).

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.