Ionized Gas in Bright Barred Spiral Galaxies: Hα Images
نویسندگان
چکیده
منابع مشابه
Molecular Gas Kinematics in Barred Spiral Galaxies
To quantify the effect that bar driven mass inflow can have on the evolution of a galaxy requires an understanding of the dynamics of the inflowing gas. In this paper we study the kinematics of the dense molecular gas in a set of seven barred spiral galaxies to determine which dynamical effects dominate. The kinematics are derived from observations of the CO J=(1−0) line made with the Berkeley-...
متن کاملBHαBAR : Big Hα kinematical sample of BARred spiral galaxies - I. Fabry-Perot Observations of 21 galaxies
The Hα gas kinematics of twenty-one representative barred spiral galaxies belonging to the BHαBAR sample is presented. The galaxies were observed with FaNTOmM, a Fabry-Perot integral-field spectrometer, on three different telescopes. The 3D data cubes were processed through a robust pipeline with the aim of providing the most homogeneous and accurate dataset possible useful for further analysis...
متن کاملStarbursts in barred spiral galaxies IV . On
The oxygen (O/H) and N/O abundance ratios along the bar of 16 barred spiral starburst galaxies are determined using long–slit spectroscopy. The abundance gradients and the spatial distribution of the ionized gas along the bar are used to understand the role of bars in starburst galaxies. The oxygen abundance gradients are steeper than in normal barred galaxies, with a mean of –0.15 dex/kpc, whi...
متن کاملGas flow in barred galaxies
I briefly review the properties of the gas flow in and around the region of the bar in a disc galaxy and discuss the corresponding inflow and the loci of star formation. I then review the flow of gas in barred galaxies which have an additional secondary bar. Finally I discuss the signatures of bars in edge-on galaxies.
متن کاملStarbursts in barred spiral galaxies V . Morphological
We have measured the bar lengths and widths of 125 barred galaxies observed with CCDs. The dependence of bar strength (identified with bar axis ratio) on morphological type, nuclear activity, central and mid-bar surface brightness is investigated. The properties of the bars are best explained if the sample is divided into early(< SBbc) and late-type galaxies, and into active (starburst, Seyfert...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Astronomical Union Colloquium
سال: 1996
ISSN: 0252-9211
DOI: 10.1017/s0252921100049447