منابع مشابه
Extraplanar diffuse ionized gas in a small sample of nearby edge-on galaxies
We present narrowband Hα imaging data of a small survey of nearby edge-on spiral galaxies, aiming at the detection of ‘extraplanar’ diffuse ionized gas (DIG). A few of our studied edge–on spirals show signs of disk–halo interaction (DHI), where extended line emission far above the galactic plane of these galaxies is detected. In some cases an extraplanar diffuse ionized gas (eDIG) layer is disc...
متن کاملMagnetic fields and ionized gas in nearby late type galaxies ∗
Aims. In order to analyze the importance of the star formation rate in generating and amplifying magnetic fields in the interstellar medium we perform a deep continuum polarization study of three angularly large, late type spiral galaxies. Methods. We obtained deep total power and polarization maps at 4.85 GHz of NGC 4236, NGC 4656 and IC 2574 using the 100-m Effelsberg radio telescope. This wa...
متن کاملNearby early – type galaxies with ionized gas . II . Line - strength indices for 18 additional galaxies ⋆
Rampazzo et al. 2005 (hereafter Paper I) presented a data-set of line-strength indices for 50 early-type galaxies in the nearby Universe. The galaxy sample is biased toward galaxies showing emission lines, located in environments corresponding to a broad range of local galaxy densities, although predominantly in low density environments. The present addendum to Paper I enlarges the above data-s...
متن کاملDense gas in nearby galaxies ?
The J = 3 − 2 sub-mm line of 12CO has been observed with the Heinrich-Hertz-Telescope (HHT) toward a sample of 28 nearby galaxies, and toward Arp 220. All sources are detected. This is the largest extragalactic sample of CO 3 − 2 spectra published so far. The 3 − 2 line fluxes, I32, are compared to 1 − 0 and 2 − 1 fluxes measured with the IRAM 30m telescope. Model calculations show that the I32...
متن کاملDense gas in nearby galaxies
CO J = 1–0, 2–1, 4–3, 7–6, and CO 1– 0, 2–1, and 3–2 line emission was mapped with angular resolutions of 13 – 22 toward the nuclear region of the archetypical starburst galaxy M82. There are two hotspots on either side of the dynamical center, with the south-western lobe being slightly more prominent. Lobe spacings are not identical for all transitions: For the submillimeter CO lines, the spac...
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ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 1991
ISSN: 0074-1809
DOI: 10.1017/s0074180900089117