Table 2
Radio sources detected in the HESS J1858+020 field with GMRT at 610 MHz and 1.4 GHz.
| Source | α J2000.0 | δ J2000.0 | S 610MHz | S 1.4GHz | Spectral | Structure |
| [h m s] | [° ′ ″] | [mJy] | [mJy] | index α | ||
|
|
||||||
| R1 | 18 57 37.117 ± 0.003 | 02 12 32.33 ± 0.05 | 24.3 ± 1.1 | 24.0 ± 0.6 | −0.02 ± 0.07 | |
| R2 | 18 57 37.955 ± 0.002 | 02 03 40.49 ± 0.03 | 46.7 ± 1.2 | 118.5± 2.0 | 1.26 ± 0.04 | Planetary nebula |
| R3 | 18 57 59.578 ± 0.007 | 02 07 06.97 ± 0.10 | 50.6 ± 1.0 | 90.3 ± 6.3 | 0.78 ± 0.10 | Planetary nebula |
| R4 | 18 58 12.557 ± 0.003 | 02 16 52.94 ± 0.04 | 31.0 ± 0.4 | 24.8 ± 0.5 | −0.30 ± 0.03 | |
| R5 | 18 58 13.898 ± 0.004 | 02 14 52.05 ± 0.05 | 21.7 ± 0.2 | 13.1 ± 0.2 | −0.68 ± 0.02 | |
Notes. We obtained the J2000.0 coordinates from the 1.4 GHz map. The 610 MHz flux density measurements were obtained from the combined image produced using data from June 4 and July 8. The spectral index α is defined as Sν ∝ να, where Sν is the flux density at frequency ν. The first column provides the assigned number to each source, ordered by increasing right ascension. The second and third columns list the J2000.0 right ascension and declination, respectively. The fourth and fifth columns provide the integrated flux density and its error at 610 MHz and 1.4 GHz, respectively. The last column lists the structure of the sources.
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