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Table 2.

NLR temperatures derived using the reddening-corrected ratios for our sample extracted from the S7 survey.

(1) (2) (a) (3) (4) (b) (5) (6) (c) (7) (8) (d) (9) (e) (10) (f) (11) (g)
Index Object name ROIII [Ar IV]+ RHe/Ar [Ne IV]/[Ar IV] [Ar IV] nsng
# (cm−3) (K)
1 NGC 5506 0.0161  ±  0.0031 1.27  ±  0.21 5.23  ±  0.856 0.185 – – 1.07 2428 13 803
2 NGC 1320 0.0116  ±  0.0012 0.85  ±  0.08 0.84  ±  0.090 0.040 – – 0.82 6038 12 073
3 NGC 5643 0.0117  ±  0.0009 0.85  ±  0.13 1.06  ±  0.157 0.050 – – 0.81 6194 12 108
4 Mrk 573 0.0171  ±  0.0004 0.82  ±  0.04 1.02  ±  0.047 0.051 – – 0.78 7226 14 030
5 NGC 3281 0.0118  ±  0.0016 1.08  ±  0.10 1.30  ±  0.120 0.068 0.45  ±  0.30 0.38 0.75 7698 12 115
6 ESO 137-G34 0.0145  ±  0.0007 0.79  ±  0.10 1.84  ±  0.151 0.099 – – 0.72 8527 13 086
7 NGC 4939 0.0146  ±  0.0008 0.90  ±  0.07 1.06  ±  0.056 0.058 0.22  ±  0.14 0.19 0.72 8705 13 125
8 NGC 3393 0.0127  ±  0.0007 0.75  ±  0.11 1.60  ±  0.170 0.091 – – 0.69 9375 12 426
9 NGC 7682 0.0172  ±  0.0011 0.71  ±  0.12 1.47  ±  0.169 0.088 – – 0.65 10 990 13 987
10 IC 5063 0.0154  ±  0.0010 0.68  ±  0.07 1.46  ±  0.133 0.091 – – 0.63 11 794 13 343
11 NGC 5728 0.0150  ±  0.0009 0.50  ±  0.18 2.24  ±  0.432 0.216 – – 0.41 26 626 12 910
12 IC 4995 0.0165  ±  0.0008 0.44  ±  0.06 0.79  ±  0.076 0.076 – – 0.41 26 966 13 409
13 IC 2560 0.0155  ±  0.0011 0.44  ±  0.04 0.62  ±  0.059 0.088 0.22  ±  0.05 0.49 0.28 53 903 12 589
Outliers Average: 0.0146  ±  0.0020 : 13 000 ± 703 K
a ESO 138-G01 0.0366  ±  0.0004 0.69  ±  0.02 2.57  ±  0.075 0.238 – – 0.43 27 919 19 928
b Mrk 1210 0.0462  ±  0.0006 0.52  ±  0.07 2.27  ±  0.163 0.207 – – 0.43 28 404 23 268
c NGC 4507 0.0485  ±  0.0004 0.51  ±  0.05 2.75  ±  0.127 0.268 – – 0.41 32 147 23 918

Notes.

(a)

The list follows a descending order in the deblended [Ar IV] (λ4711Å/λ4740Å) doublet ratio (Col. 9).

(b)

Observed blended [Ar IV]+ (λ4711Å+/λ4740Å) line ratio.

(c)

Estimated fractional contribution of the He Iλ4713Å line to the observed [Ar IV]+ λ4711Å line.

(d)

Estimated fractional contribution of the [Ne IV] λλ4715Å line (when detected) to the observed [Ar IV]+ λ4711Å line.

(e)

Target deblended [Ar IV] (λ4711Å/λ4740Å) ratios after applying the blending correction(s) to the observed ratios of Col. 4.

(f)

Density values inferred from the deblended [Ar IV] doublet ratio.

(g)

Temperature values deduced from the ROIII ratios assuming a single density nsng.

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