منابع مشابه
Hi and Oh Absorption toward Ngc 6240
VLA observations of large-scale HI and OH absorption in the merging galaxy of NGC6240 are presented with 1 arcsec resolution. HI absorption is found across large areas of the extended radio continuum structure with a strong concentration towards the double-nucleus. The OH absorption is confined to the nuclear region. The HI and OH observations identify fractions of the gas disks of the two gala...
متن کاملMm - wave HCO + , HCN and CO absorption toward NGC 1052
We used the Plateau de Bure Interferometer to observe λ3mm J=1-0 absorption lines of HCO + , HCN and CO toward the core of the nearby elliptical, megamaser-host galaxy NGC1052. The lines are relatively weak, with peak optical depths 0.03 for HCO + and HCN and 0.1 for CO. Nonetheless the inferred column density of molecular gas 2N(H2) ≃ 5×10 21 cm −2 is consistent with the degree of reddening in...
متن کاملVLBI Observations of HI Absorption toward NGC 3894
One of the most important problems in the study of AGN is understanding the detailed geometry, physics, and evolution of the central engines and their environments. The leading models involve an accretion disk and torus around a central black hole. Much of this torus should be comprised of atomic gas, detectable in absorption toward the bright inner radio jets. In the last few years, a number o...
متن کاملGlobular Cluster Candidates in NGC 891 1
We use deep images taken with the Advanced Camera for Surveys on board the Hubble Space Telescope of the disk galaxy NGC 891, to search for globular cluster candidates. This galaxy has long been considered to be a close analog in size and structure to the Milky Way and is nearly edge-on, facilitating studies of its halo population. These extraplanar ACS images, originally intended to study the ...
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ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 1991
ISSN: 0074-1809
DOI: 10.1017/s0074180900199504