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Table 3

X-ray SNRs in M 31 detected with XMM-Newton.

[SPH11] Hα [S ii] [O iii] [S ii]/Hα L (0.35–2.0 keV)a
ID [erg cm-2 s-1 arcsec-2] [erg cm-2 s-1 arcsec-2] [erg cm-2 s-1 arcsec-2] [erg s-1]
Known SNRsb
182 1.4e–14  ±  2.9e–15 1.5e–14  ±  7.5e–15 N/A 1.1  ±  0.6 2.2e+35
474 2.5e–14  ±  5.2e–15 2.6e–14  ±  1.3e–14 2.3e–14  ±  1.1e–14 1.0  ±  0.5 6.9e+35
883 9.7e–15  ±  5.7e–16 9.2e–15  ±  1.9e–15 2.4e–16  ±  2.7e–17 0.9  ±  0.2 4.0e+35
1040 1.1e–14  ±  6.5e–16 9.0e–15  ±  1.9e–15 1.7e–14  ±  1.9e–15 0.8  ±  0.2 1.0e+36
1050 7.5e–15  ±  4.4e–16 7.7e–15  ±  1.5e–15 0.0 1.0  ±  0.2 1.2e+36
1066 2.2e–14  ±  1.3e–15 1.9e–14  ±  3.9e–15 2.1e–14  ±  2.3e–15 0.9  ±  0.2 3.8e+36
1234 5.6e–14  ±  3.3e–15 4.2e–14  ±  8.7e–15 3.7e–14  ±  4.1e–15 0.7  ±  0.2 8.0e+36
1275 3.0e–14  ±  1.7e–15 2.8e–14  ±  5.8e–15 5.4e–14  ±  6.0e–15 0.9  ±  0.2 3.1e+36
1291 3.1e–17  ±  1.9e–18 0.0 1.8e–17  ±  2.0e–18 0.0 1.8e+36
1328 5.9e–15  ±  3.4e–16 2.5e–15  ±  5.1e–16 1.6e–14  ±  1.8e–15 0.4  ±  0.1 1.2e+36
1351 3.8e–14  ±  2.2e–15 3.1e–14  ±  6.4e–15 6.4e–14  ±  7.2e–15 0.8  ±  0.2 6.5e+35
1386 5.9e–14  ±  3.4e–15 1.3e–14  ±  2.7e–15 6.3e–15  ±  7.1e–16 0.2  ±  0.0 2.2e+35
1410 1.2e–14  ±  6.8e–16 1.1e–14  ±  2.3e–15 7.1e–15  ±  8.0e–16 0.9  ±  0.2 8.5e+35
1497 4.7e–14  ±  2.7e–15 2.5e–14  ±  5.2e–15 3.0e–14  ±  3.4e–15 0.5  ±  0.1 5.9e+35
1522 2.4e–14  ±  1.4e–15 2.5e–14  ±  5.1e–15 1.2e–14  ±  1.3e–15 1.0  ±  0.2 4.4e+35
1539 2.1e–14  ±  6.4e–15 2.1e–14  ±  4.3e–15 2.7e–15  ±  8.2e–16 1.0  ±  0.4 2.1e+35
1587 0.0 0.0 0.0 0.0 3.6e+35
1593 2.6e–14  ±  7.9e–15 2.6e–14  ±  5.4e–15 6.2e–14  ±  1.9e–14 1.0  ±  0.4 1.7e+35
1599 5.8e–14  ±  3.4e–15 5.4e–14  ±  1.1e–14 9.7e–14  ±  2.9e–14 0.9  ±  0.2 2.1e+36
1793 3.5e–16  ±  1.1e–16 2.5e–16  ±  5.2e–17 2.9e–16  ±  8.8e–17 0.7  ±  0.3 5.1e+35
1805 3.2e–17  ±  9.7e–18 9.6e–17  ±  2.0e–17 4.5e–16  ±  1.3e–16 3.0  ±  1.1 8.0e+35
Newly confirmed SNRs based on optical and X-ray data
1079 3.9e–15  ±  8.1e–16 3.4e–15  ±  1.7e–15 1.4e–14  ±  7.0e–15 0.9  ±  0.4 5.5e+35
1148 2.3e–16  ±  1.3e–17 1.8e–16  ±  3.7e–17 1.7e–15  ±  1.9e–16 0.8  ±  0.2 2.9e+35
1370 8.2e–17  ±  4.8e–18 6.9e–17  ±  1.4e–17 2.6e–16  ±  7.9e–17 0.8  ±  0.2 3.0e+35
1481 7.6e–14  ±  4.4e–15 6.3e–14  ±  1.3e–14 3.7e–14  ±  4.2e–15 0.8  ±  0.2 4.6e+35
1548 2.1e–15  ±  6.4e–16 2.3e–15  ±  4.8e–16 1.5e–15  ±  4.6e–16 1.1  ±  0.4 2.1e+35

Notes. No [O iii] flux was calculated for sources that were only observed in fields F8 and/or F9 ([SPH11] 182; see Sect. 2.2).

(a)

See Sect. 6.1.

(b)

SNRs known from literature. The optical fluxes and the flux ratios were determined from the LGGS data but were not used for the classification.

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