Radio-continuum jets around the peculiar galaxy pair ESO 295-IG022
Article
Filipovic, M.D., Crawford, E.J., Jones, P.A. and White G.L.. 2010. "Radio-continuum jets around the peculiar galaxy pair ESO 295-IG022
." Serbian Astronomical Journal. 2010 (181), pp. 31-37. https://doi.org/10.2298/SAJ1081031F
| Article Title | Radio-continuum jets around the peculiar galaxy pair ESO 295-IG022 |
|---|---|
| ERA Journal ID | 41911 |
| Article Category | Article |
| Authors | Filipovic, M.D., Crawford, E.J., Jones, P.A. and White G.L. |
| Journal Title | Serbian Astronomical Journal |
| Journal Citation | 2010 (181), pp. 31-37 |
| Number of Pages | 7 |
| Year | 2010 |
| Publisher | Astronomical Observatory of Belgrade |
| Place of Publication | Serbia |
| ISSN | 1450-698X |
| Digital Object Identifier (DOI) | https://doi.org/10.2298/SAJ1081031F |
| Web Address (URL) | https://doiserbia.nb.rs/Article.aspx?ID=1450-698X1081031F |
| Abstract | We report new radio-continuum observations with the Australia Telescope Compact Array (ATCA) of the region surrounding the peculiar galaxy pair ESO 295-IG022 at the centre of the poor cluster Abell S0102. We observed this cluster at wavelengths of λ=20/13 and 6/3 cm with the ATCA 6 km array. With these configurations, we achieved a resolution of ~2" at 3 cm which is sufficient to resolve the jet-like structure of ~3' length detected at 20 cm. From our new high resolution images at 6 and 3 cm we confirm the presence of a double jet structure, most likely originating from the northern galaxy (ESO 295-IG022-N), bent and twisted towards the south. We found the spectral index of the jet to be very steep (α=-1.32). No point source was detected that could be associated with the core of ESO 295-IG022-N. On the other hand, ESO 295-IG022-S does not show any jet structure, but does show a point radio source. This source has variable flux and spectral index, and appears to be superposed on the line-of-sight of the jets (seen at 20-cm) originating from the northern galaxy ESO 295-IG022-N. Finally, regions of very high and somewhat well ordered polarisation were detected at the level of 70%. |
| Keywords | Galaxies: clusters: individual: Abell S0102; Galaxies: individual: ESO 295-IG022; Galaxies: interactions; Galaxies: jets; Radio continuum: galaxies; X-rays: galaxies |
| Page Range | 31-37 |
| Byline Affiliations | University of Western Sydney |
| University of New South Wales | |
| University of Chile, Chile | |
| Charles Sturt University |
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