PhD Thesis (PDF) - Department of Astronomy - University of Virginia

Table 5.5. X-ray Spectral Fits for Point Sources in NGC 4697
NH Row Group a
Model (10 20 cm −2 ) kT /1keV or Γ F0784 b F4727 b F4728 b F4729 b F4730 b Counts χ 2 /dof
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12)
1 a < aeff Power (2.14) 1.505 +0.048
−0.032
3.77 3.71 3.87 3.79 3.59 7190.3 294.26/245=1.20
2 a < aeff Power 7.0 +2.5
−2.4
1.605 +0.061
−0.060
3.82 3.74 3.88 3.82 3.64 7190.3 283.16/244=1.16
3 c
a < aeff Bremss (2.14) 9.1 +1.3
−1.1
3.42 3.34 3.46 3.41 3.26 7190.3 270.49/245=1.10
4 a < aeff Bremss 1.8 +1.9
−1.8
9.3 +1.9
−1.5
3.42 3.34 3.46 3.41 3.26 7190.3 270.41/244=1.11
5 aeff < a < 2aeff Bremss (2.14) 7.8 +3.3
−2.5
0.82 0.84 0.82 0.90 0.78 1587.4 60.39/57=1.06
6 2aeff < a < 3aeff Bremss (2.14) 5.7 +1.6
−1.1
0.91 0.53 0.62 0.76 0.72 1652.9 68.07/64=1.06
7 2aeff < a < 3aeff Power (2.14) 1.649 +0.079
−0.077
1.00 0.58 0.71 0.86 0.79 1652.9 63.80/64=1.00
d
8 a < 2aeff Bremss (2.14) 8.9 +1.2
−1.0
4.18 4.12 4.22 4.24 3.99 8777.7 331.35/303=1.09
d
9 a < 3aeff Bremss (2.14) 8.3 +1.0
−0.8
5.12 4.65 4.84 5.02 4.72 10430.6 406.00/368=1.10
10 ACS FOV: GC-LMXBs Bremss (2.14) 12.3 +3.6
−2.2
2.17 2.22 2.13 2.24 2.19 4271.8 149.18/152=0.98
11 ACS FOV: GC-LMXBs Bremss 4.7 +2.6
−2.5
10.3 +3.7
−2.2
2.17 2.21 2.10 2.23 2.18 4271.8 146.41/151=0.97
12 ACS FOV: Field-LMXBs Bremss (2.14) 7.3 +1.8
−1.3
1.19 1.11 1.24 1.25 1.16 2614.8 92.38/98=0.94
13 ACS FOV: Field-LMXBs Bremss 0.0 [< 2.1] 8.2 +2.2
−1.6
1.19 1.11 1.25 1.25 1.16 2614.8 89.57/97=0.92
14 ACS FOV: GC-LMXBs + Field-LMXBs d
Bremss (2.14) 10.0 +1.7
−1.3
3.35 3.30 3.37 3.49 3.35 6886.6 250.15/251=1.00
15 ACS FOV: GC-LMXBs + Field-LMXBs d
Bremss 2.6 +2.1
−2.0
9.7 +2.3
−1.7
3.35 3.30 3.37 3.48 3.34 6886.6 250.01/250=1.00
16 ACS FOV: Blue-GC-LMXBs Bremss 0.0 [< 5.5] 99.7 [> 16.6] 0.44 0.53 0.33 0.42 0.39 553.1 13.87/15=0.92
17 ACS FOV: Red-GC-LMXBs Bremss 5.2 +2.8
−2.7
9.1 +3.0
−2.0
1.80 1.78 1.84 1.83 1.79 3643.6 128.77/129=1.00
18 ACS FOV: Red-GC-LMXBs + Blue GC-LMXBs d Bremss 4.5 +2.7
−2.6
10.1 +3.9
−2.2
2.17 2.23 2.12 2.18 2.11 4196.7 148.29/146=1.02
19 a < 2aeff ,L38 < 2 Bremss (2.14) 7.2 +1.1
−0.9
2.26 2.27 2.30 2.21 2.20 5008.8 175.71/182=0.97
20 a < 2aeff ,L38 < 2 Bremss 0.4 [< 2.6] 7.9 +1.5
−1.3
2.26 2.27 2.31 2.22 2.20 5008.8 173.98/181=0.96
21 a < 2aeff ,2 < L38 Bremss (2.14) 10.7 +3.0
−1.9
1.82 1.85 1.82 2.05 1.73 3709.4 120.28/132=0.91
22 a < 2aeff ,2 < L38 Bremss 5.9 +2.9
−2.8
8.3 +2.5
−1.7
1.82 1.83 1.80 2.03 1.72 3709.4 115.13/131=0.91
23 a < 2aeff ,L38 < 2 + 2 < L38 d
Bremss (2.14) 8.4 +1.1
−0.9
4.07 4.11 4.11 4.25 3.92 8718.2 303.73/315=0.96
24 a < 2aeff ,L38 < 2 + 2 < L38 d
Bremss 2.8 +1.8
−1.7
8.1 +0.9
−0.8
4.07 4.10 4.10 4.24 3.92 8718.2 303.36/314=0.97
a
We abbreviate LX /10 38 ergs s −1 in the 0.3–10 keV band as L38.
b −13 −2 −1
Units are 10 ergs cm s in the 0.3–10 keV band.
c
The adopted best-fit model for LMXBs.
d
The group fitted is the simultaneous fit of two (or three) other rows. See the note in § 5.9 to understand the implications of this.
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