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Table 1:

Log of objects observed in the direction of M 31 and derived spectral types.
M 31
ID1 RA Dec USNO-B1 2MASS date Exp. spectral
  (2000) (2000) ID B R ID J K   (s) type
40 00 40 07.29 40 41 41.2 1306-0011378 16.1 14.3 00400722+4041428 13.55 13.16 29/09/07 7200 (4) G2
42 00 40 07.71 40 31 12.3 1305-0011632 13.5 12.1 00400757+4031134 12.18 11.85 12/09/07 3600 (2) F8
78 00 40 40.16 40 25 50.9 1304-0011697 14.4 14.2 00404007+4025532 13.15 12.79 14/09/07 7200 (4) G0
100 00 40 54.54 40 31 32.7 1305-0012214 14.4 14.1 00405458+4031303 13.12 12.75 06/10/07 7200 (4) F7
128 00 41 18.76 40 51 59.3 1308-001239 15.7 13.6 00411865+4051592 11.74 11.26 29/09/07 5400 (3) G6
129 00 41 19.27 40 51 01.7 1308-0012400 13.8 13.9 00411911+4051017 12.01 11.48 05/10/07 5400 (3) K0
273 00 42 29.43 41 29 03.0 1314-0013202 15.2 12.4 00422944+4129035 10.00 9.24 14/09/07 3600 (2) K0
473 00 43 38.58 41 37 37.7 1316-0014855 nf 14.2 00433861+4137386 11.76 11.12 07/10/07 7200 (4) K3
484 00 43 43.10 41 38 06.6 1316-0014885 nf 14.2 00434293+4138078 12.01 11.70 07/10/07 7200 (4) F5
492 00 43 46.69 41 38 35.6 1316-0014901 16.1 14.1 00434663+4138360 11.55 11.00 07/10/07 7200 (4) K2
593 00 44 53.31 42 02 15.8 1320-0014419 14.1 13.3 00445336+4202145 11.76 11.16 15/09/07 2800 (2) K1
611 00 45 05.85 42 03 17.3 1320-0014588 13.5 13.1 00450551+4203177 11.80 11.45 27/09/07 5400 (3) G2
662 00 45 38.97 41 56 17.3 1319-0014370 14.3 13.1 00453897+4156163 11.70 11.16 30/09/07 3600 (2) K0
663 00 45 40.40 42 08 07.6 1321-0015992 13.9 11.5 00454053+4208066 10.46 - 12/09/07 2400 (2) K4
665 00 45 41.26 42 19 40.4 1323-0017116 13.2 12.4 00454112+4219440 11.48 11.14 15/09/07 3600 (2) G0
701 00 46 03.09 42 24 34.6 1324-0016254 14.8 14.0 00460308+4224338 13.08 12.68 06/10/07 7200 (4) F6
741 00 46 23.72 41 21 16.7 1313-0014047 14.6 13.7 00462372+4121172 12.58 12.21 30/09/07 5400 (3) G0
7662 00 46 37.75 41 29 05.3 1314-0014843 14.1 12.6 00463749+4129053 13.56 13.23 28/09/07 3600 (2) G2
            00463781+4129037 13.23 12.64 28/09/07 3600 (2) K1
780 00 46 45.85 42 30 48.3 1325-0017703 14.2 12.8 00464627+4230478 11.74 11.33 27/09/07 3600 (2) G2
840 00 47 26.05 42 21 58.9 1323-0018108 13.0 12.5 00472611+4221583 11.27 10.92 27/09/07 3600 (2) G2

1 X-ray source numbers from PFH2005 (M 31), i.e. the prefix $\rm [PFH2005]$ should be added in front of each number.
2 The bright USNO-B1 star given as possible optical counterpart in PFH2005 (USNO-B1 1314-0014843) is actually resolved into two brighter stars on Skinakas images (and in 2MASS).


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