Table A.2.
Overview of astrometric calibrator objects for all targets.
| SNR | Designation |
Position (Epoch 2015.5) |
Proper motion |
Used (a) | |||
|---|---|---|---|---|---|---|---|
| Number | Gaia DR2 Source ID | RA (ICRS) | Dec (ICRS) | μα | μδ | ||
| (h:m:s) | (d:m:s) | (mas yr−1) | (mas yr−1) | ||||
| G15.9+0.2 | 1 | 4146177809117217024 | 18:19:04.1362(0) | −15:01:17.914(0) | −2.99 ± 0.05 | −11.13 ± 0.05 | Y |
| 2 | 4146176679563359744 | 18:18:40.8608(0) | −15:02:50.272(0) | −4.74 ± 0.12 | −11.63 ± 0.10 | Y | |
| 3 | 4146177396800326016 | 18:18:59.2871(0) | −15:03:02.877(0) | 0.58 ± 0.36 | −0.19 ± 0.34 | N | |
| 4 | 4146178977348360192 | 18:18:50.9880(0) | −14:58:42.607(0) | 0.01 ± 0.09 | −5.59 ± 0.08 | Y | |
| 5 | 4146179114787324800 | 18:18:56.0305(0) | −14:57:29.414(0) | 2.16 ± 0.16 | 0.31 ± 0.15 | N | |
| Kes 79 | 1 | 4266507644409347712 | 18:52:45.3536(0) | +00:37:33.883(0) | 2.71 ± 0.34 | −5.48 ± 0.37 | Y |
| 2 | 4266506952913023488 | 18:52:13.0122(0) | +00:37:37.579(0) | −2.48 ± 0.58 | −4.97 ± 0.50 | Y | |
| 3 | 4266508464741698816 | 18:52:48.6778(0) | +00:40:38.852(0) | −1.11 ± 0.45 | −2.45 ± 0.41 | Y | |
| Cas A | 1 | 2010478284367990016 | 23:22:51.6664(0) | +58:50:19.792(0) | 15.64 ± 0.09 | 0.30 ± 0.08 | Y |
| 2 | 2010477356655102592 | 23:23:14.1850(0) | +58:46:55.429(0) | 13.78 ± 0.04 | −0.16 ± 0.04 | Y | |
| 3 | 2010477253575869184 | 23:23:04.7862(0) | +58:48:00.022(0) | −1.22 ± 0.03 | −1.53 ± 0.03 | N | |
| G330.2+1.0 | 1 | 5981660915203664384 | 16:01:13.9674(0) | −51:31:37.490(0) | −5.01 ± 0.23 | −5.03 ± 0.15 | Y |
| 2 | 5981660743404965120 | 16:01:07.6243(0) | −51:33:34.908(0) | 10.35 ± 0.18 | 9.56 ± 0.13 | Y | |
| 3 | 5981637791098864128 | 16:00:39.0792(0) | −51:34:34.539(0) | −9.87 ± 0.07 | −10.89 ± 0.05 | N | |
| 4 | 5981640814756329088 | 16:00:29.9561(0) | −51:33:43.894(0) | −6.15 ± 0.23 | −7.64 ± 0.17 | Y | |
| 5 | 5981636932105333632 | 16:00:31.8387(0) | −51:39:05.986(0) | 0.49 ± 0.08 | −1.31 ± 0.06 | Y | |
| 6 | 5981661774197144448 | 16:01:02.8106(0) | −51:29:54.717(0) | −18.74 ± 0.30 | −19.66 ± 0.23 | Y | |
| RX J1713.7−3946 | 1 | 5972217652195355392 | 17:13:47.7129(0) | −39:52:51.150(0) | −2.82 ± 0.07 | −8.38 ± 0.05 | N |
| 2 | 5972124679069981440 | 17:13:31.7884(0) | −39:53:43.687(0) | 0.37 ± 0.09 | −1.99 ± 0.06 | Y (c) | |
| 3 | 5972266138099405696 | 17:13:37.3502(15) | −39:46:04.196(20) | ...(b) | ...(b) | Y (c) | |
| G350.1−0.3 | 1 | 5972890935584476288 | 17:20:56.1029(0) | −37:27:34.016(0) | −3.07 ± 0.18 | −4.57 ± 0.14 | Y |
| 2 | 5972880112266871936 | 17:21:21.3165(0) | −37:26:46.025(0) | −2.48 ± 0.17 | −1.02 ± 0.12 | Y | |
| 3 | 5972880558943480448 | 17:21:13.1090(0) | −37:26:11.996(0) | 1.06 ± 0.10 | 1.50 ± 0.07 | N | |
| 4 | 5972892516132452608 | 17:20:59.2872(0) | −37:25:01.514(0) | 2.41 ± 0.37 | 2.25 ± 0.25 | N | |
Notes. We display the astrometric solutions for all our initially selected reference sources as listed in the Gaia DR2 catalog (Gaia Collaboration 2018). We state the rounded 1σ uncertainties of Right Ascension and Declination at the reference epoch in parentheses to illustrate their negligible character for almost all objects. The proper motion components along the Right Ascension and Declination axes are labeled as μα and μδ, respectively.
The column “Used” indicates whether an individual source was included in the final proper motion analysis or excluded for a specific reason (see subsections on the individual objects in Sect. 4).
For these two sources, the absolute Gaia positions were not used in our analysis since we considered their identification unreliable. Instead, the individual coordinate frames were directly registered with each other based on relative positions alone (see Sect. 4.5 for details).
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