Ring galaxies - I. Kinematics of the southern ring galaxy AM 064-741
نویسندگان
چکیده
منابع مشابه
H I Line Profiles of Galaxies: Tilted Ring Models
Two-dimensional information on the kinematics and spatial distribution of gas in spiral galaxies is encoded in radio observations of their one-dimensional 21-cm neutral hydrogen (HI) line profiles. More than ten thousand HI profiles have been published and are publicly available. In order to explore the parameter space mapped out by the 21-cm neutral hydrogen line profile, we have modified and ...
متن کاملFormation of polar ring galaxies
Polar ring galaxies are peculiar systems in which a gas rich, nearly polar ring surrounds an early-type or elliptical host galaxy. Two formation scenarios for these objects have been proposed: they are thought to form either in major galaxy mergers or by tidal accretion of the polar material from a gas rich donor galaxy. Both scenarios are studied through N-body simulations including gas dynami...
متن کاملKinematics of the dusty circumnuclear ring in the barred Seyfert galaxy NGC 4151
We present optical and neutral hydrogen observations of the central ∼2 kpc in NGC 4151, and examine the distribution and kinematics of neutral hydrogen in the vicinity of the optical circumnuclear dust ‘ellipse’. The V-I colour map, derived from broad-band images obtained using TAURUS II in imaging mode, shows clearly the red arcs which delineate the 11′′ × 18′′ dust ellipse detected previously...
متن کاملStar Formation in Ring Galaxies
Ring galaxies are specific types of interacting galaxies in which a smaller galaxy has passed through the center of the disk of another larger galaxy. The intrusion of the smaller galaxy causes the structure of the larger galaxy to compress as the smaller galaxy falls through, and to recoil back after the smaller galaxy passes through, hence the ring-like shape. In our research, we studied the ...
متن کاملPolar Ring Galaxies and Warps
Polar ring galaxies, where matter is in equilibrium in perpendicular orbits around spiral galaxies, are ideal objects to probe the 3D shapes of dark matter halos. The conditions to constrain the halos are that the perpendicular system does not strongly perturb the host galaxy, or that it is possible to derive back its initial shape, knowing the formation scenario of the polar ring. The formatio...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1982
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/199.3.633