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Table 2.

Radio spectral indices αlow between 144 MHz and the reference frequency and αhigh between the two reference frequencies.

Galaxy νref Sref Ref. αlow νref, 2 Sref, 2 Ref. αhigh
(MHz) (Jy) (MHz) (Jy)
NGC 598 1400 1.99 ± 0.10 T07 −0.34 ± 0.05 4850 1.06 ± 0.05 T07 −0.51 ± 0.06
NGC 855 1400 0.006 ± 0.001 C98 −0.22 ± 0.09 4850 0.0032 ± 0.0007 T17 −0.51 ± 0.22
NGC 891 1575 0.7432 ± 0.0105 W15 −0.62 ± 0.04 6000 0.2520 ± 0.027 S19 −0.81 ± 0.08
NGC 925 1365 0.078 ± 0.008 B07 −0.51 ± 0.06 10 700 0.038 ± 0.006 N95 −0.35 ± 0.09
NGC 2683 1575 0.068 ± 0.007 W15 −0.70 ± 0.06 6000 0.0203 ± 0.0008 W15 −0.90 ± 0.08
NGC 2798 1400 0.086 ± 0.008 Y01 −0.42 ± 0.06 4850 0.0338 ± 0.0025 T17 −0.75 ± 0.10
NGC 2820 1575 0.0764 ± 0.0012 W15 −0.51 ± 0.04 6000 0.0191 ± 0.0004 W15 −1.04 ± 0.02
NGC 2841 1365 0.097 ± 0.007 B07 −0.73 ± 0.05 4850 0.038 ± 0.004 T17 −0.74 ± 0.10
NGC 2976 1365 0.072 ± 0.005 B07 −0.46 ± 0.05 4850 0.039 ± 0.003 T17 −0.48 ± 0.08
NGC 3003 1575 0.0349 ± 0.0041 W15 −0.60 ± 0.06 6000 0.0122 ± 0.0008 W15 −0.79 ± 0.10
NGC 3031 1400 0.624 ± 0.031 WB92 −0.52 ± 0.05 4850 0.28931 ± 0.014 B85 −0.62 ± 0.06
NGC 3079 1575 0.808 ± 0.016 W15 −0.64 ± 0.04 6000 0.3654 ± 0.0073 W15 −0.59 ± 0.02
NGC 3077 1400 0.030 ± 0.003 Y01 −0.35 ± 0.06 4850 0.023 ± 0.001 T17 −0.21 ± 0.09
NGC 3184 1365 0.089 ± 0.005 B07 −0.64 ± 0.05 4850 0.028 ± 0.003 T17 −0.91 ± 0.10
NGC 3198 1365 0.039 ± 0.005 B07 −0.52 ± 0.07 4850 0.012 ± 0.001 T17 −0.93 ± 0.12
NGC 3265 1400 0.011 ± 0.001 Y01 −0.39 ± 0.06 4850 0.0057 ± 0.0006 T17 −0.53 ± 0.11
Mrk 33 1400 0.017 ± 0.002 C98 −0.52 ± 0.07 N/A N/A N/A N/A
NGC 3432 1575 0.0833 ± 0.0019 W15 −0.54 ± 0.04 6000 0.0263 ± 0.0005 W15 −0.86 ± 0.02
NGC 3448 1575 0.0465 ± 0.0009 W15 −0.60 ± 0.04 6000 0.0205 ± 0.004 W15 −0.61 ± 0.15
NGC 3556 1575 0.2909 ± 0.0058 W15 −0.60 ± 0.04 6000 0.0792 ± 0.0047 W15 −0.97 ± 0.05
NGC 3877 1575 0.0423 ± 0.0009 W15 −0.58 ± 0.04 6000 0.0129 ± 0.0003 W15 −0.89 ± 0.02
NGC 3938 1365 0.082 ± 0.005 B07 −0.71 ± 0.05 4850 0.0263 ± 0.0015 T17 −0.90 ± 0.07
NGC 4013 1575 0.0378 ± 0.0008 W15 −0.58 ± 0.04 6000 0.0126 ± 0.0003 W15 −0.82 ± 0.02
NGC 4096 1575 0.0560 ± 0.0011 W15 −0.53 ± 0.04 6000 0.0163 ± 0.0003 W15 −0.92 ± 0.02
NGC 4125 1365 0.0018 ± 0.0002 B07 −0.84 ± 0.06 N/A N/A N/A N/A
NGC 4157 1575 0.1845 ± 0.0037 W15 −0.72 ± 0.04 6000 0.0551 ± 0.0011 W15 −0.90 ± 0.02
NGC 4214 1400 0.062 ± 0.005 Y01 −0.31 ± 0.06 6000 0.02316 ± 0.00009 H18 −0.68 ± 0.06
NGC 4217 1575 0.1116 ± 0.0022 W15 −0.58 ± 0.04 6000 0.0354 ± 0.0007 W15 −0.86 ± 0.02
NGC 4244 1575 0.0165 ± 0.0006 W15 −0.46 ± 0.04 6000 0.009 ± 0.0006 W15 −0.45 ± 0.06
NGC 4449 1400 0.30 ± 0.03 C98 −0.54 ± 0.06 4850 0.139 ± 0.007 C00 −0.62 ± 0.09
NGC 4559 1365 0.081 ± 0.01 B07 −0.48 ± 0.07 4850 0.038 ± 0.003 T17 −0.60 ± 0.12
NGC 4625 1400 0.009 ± 0.003 Y01 −0.26 ± 0.15 4850 0.0031 ± 0.0003 T17 −0.89 ± 0.27
NGC 4631 1575 1.134 ± 0.037 W15 −0.59 ± 0.04 4850 0.515 ± 0.04 M19 −0.70 ± 0.07
NGC 4725 1365 0.054 ± 0.005 B07 −0.62 ± 0.06 4850 0.03 ± 0.002 T17 −0.46 ± 0.09
NGC 4736 1365 0.31 ± 0.02 B07 −0.47 ± 0.05 4850 0.125 ± 0.01 T17 −0.72 ± 0.08
NGC 5033 1365 0.22 ± 0.01 B07 −0.73 ± 0.05 4850 0.079 ± 0.007 G96 −0.81 ± 0.08
NGC 5055 1365 0.42 ± 0.01 B07 −0.75 ± 0.05 4850 0.167 ± 0.008 T17 −0.73 ± 0.04
NGC 5194 1365 1.41 ± 0.01 B07 −0.67 ± 0.04 4850 0.42 ± 0.08 T17 −0.96 ± 0.15
NGC 5195 1365 0.20 ± 0.02 B07 −0.72 ± 0.06 4850 0.054 ± 0.005 F11 −1.03 ± 0.11
NGC 5297 1575 0.0238 ± 0.0005 W15 −0.67 ± 0.04 6000 0.0067 ± 0.0004 W15 −0.95 ± 0.05
NGC 5457 1400 0.808 ± 0.08 WB92 −0.61 ± 0.06 4850 0.31 ± 0.002 T17 −0.77 ± 0.08
NGC 5474 1400 0.012 ± 0.01 C98 −0.25 ± 0.06 4850 0.005 ± 0.0006 T17 −0.70 ± 0.12
NGC 5866 1400 0.023 ± 0.002 Y01 −0.46 ± 0.06 4850 0.0121 ± 0.0008 T17 −0.52 ± 0.09
NGC 5907 1575 0.1187 ± 0.0036 W15 −0.67 ± 0.04 6000 0.0515 ± 0.001 W15 −0.62 ± 0.03
NGC 7331 1365 0.42 ± 0.02 B07 −0.72 ± 0.05 4850 0.1738 ± 0.0087 T17 −0.70 ± 0.05

References. B07: Braun et al. (2007); B85: Beck et al. (1985); C00: Chyży et al. (2000); C98: Condon et al. (1998); F11: Fletcher et al. (2011); G96: Gregory et al. (1996); H18: Hindson et al. (2018); M19: Mora-Partiarroyo et al. (2019); N95: Niklas et al. (1995); S19: Schmidt et al. (2019); T07: Tabatabaei et al. (2007); T17: Tabatabaei et al. (2017); W15: Wiegert et al. (2015); WB92: White & Becker (1992); Y01: Yun et al. (2001).

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