A dearth of atomic hydrogen in NGC 1052-DF2
نویسندگان
چکیده
منابع مشابه
Ionised, Atomic, and Molecular Gas around the Twin Radio Jets of Ngc 1052
The bright radio structure of the LINER elliptical galaxy NGC 1052 is dominated by bi-symmetric jets on parsec scales. Features move outward on both sides of the core at v app ∼ 0.26c. We have established the occurrence of free-free absorption, and suggest the presence of a patchy, geometrically thick region oriented roughly orthogonal to the jets; components have a wide range of spectral shape...
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We present results of a VLBA multi-frequency study of the pc-scale twin jet in NGC 1052. We observed this object at epoch 1998.99 with the VLBA at 5, 8.4, 22 and 43 GHz both in total and linearly polarized intensity. The spectral analysis confirms the necessity of a free-free absorbing medium, obscuring the innermost part of both jets. At 5 GHz we found a compact linearly polarized emission reg...
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New high resolution, high sensitivity WSRT H i synthesis observations of the spiral galaxy NGC 3631 are presented. In the total atomic hydrogen map, the spiral arms are well distinguished from the interarm regions, while the sensitivity allows detection of H i in all but a few isolated regions of the areas between the spiral arms. Most of the atomic hydrogen is located within the optical disc, ...
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We report results from nearly simultaneous pentachromatic VLBI observations towards a nearby GPS galaxy NGC 1052. The observations at 1.6 and 4.8 GHz with VSOP, and at 2.3, 8.4, and 15.4 GHz with VLBA, provide linear resolutions of ∼ 0.1 pc. Convex spectra of a double-sided jet imply that synchrotron emission is obscured through foreground cold dense plasma, in terms of free–free absorption (FF...
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We discuss multiple Very Long Baseline Interferometry (VLBI) continuum and spectral line imaging observations and Westerbork Synthesis Radio Telescope spectroscopy of the compact variable nuclear radio jet source in the elliptical galaxy NGC 1052. Absorption and emission signatures reveal ionised, atomic, and molecular components of the surrounding medium. Ten epochs of Very Long Baseline Array...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society: Letters
سال: 2018
ISSN: 1745-3925,1745-3933
DOI: 10.1093/mnrasl/sly192