Book contents
- Frontmatter
- Contents
- Preface
- List of Participants
- I INTRODUCTION
- II THE INNER PARSEC
- III THE CIRCUMNUCLEAR REGION
- IV GAS DYNAMICS AND STAR FORMATION IN BARRED AND NORMAL GALAXIES
- V NUCLEAR GAS AND LARGE-SCALE PROPERTIES OF AGN AND STARBURST HOSTS
- VI HOST GALAXY-AGN-NUCLEAR STARBURST CONNECTION
- Starbursts, Quasars, and their Environments (Invited paper) 234
- Nuclear Fueling in Two-Component Star-Gas Disks (Invited paper) 251
- Radio Loud Far-Infrared Galaxies 263
- Massive Central Black Holes as Generators of Chaos and Drivers of Large-Scale Dynamics
- Self-Gravitating Gas Dynamics: Growing Monsters and Fueling Starburstsin Disk Galaxies
- Radial Inflows in Disk Galaxies: Effects of Star Formation 279
- Self-Gravitating Gas Dynamics in a Galactic Central Region
- Nuclear Inflow under the Action of Instabilities
- Mid-IR Imaging of Interacting and Non-Interacting AGNs (Poster paper)
- Imaging of MBG Starbursts: Preliminary Results (Poster paper)
- Compact Extranuclear Structures of Mkn 298 (Poster paper)
- NGC 6814: a Very Normal Looking AGN Host Galaxy (Poster paper)
- ROSAT PSPC Observations of NGC 3079 (Poster paper)
- MK 231: AGN vs. Starburst? Steps Toward a Model (Poster paper)
- Extended Starburst Activity Induced by the Central AGN: a Model for NGC 1068 (Poster paper)
- NGC 2782, NGC 4102 and NGC 6764: Evidence for Starburst-Driven Winds
- AGN Winds and Nuclear Starbursts (Poster paper)
- VII GALAXY INTERACTIONS AND INDUCED ACTIVITY
- VIII GAS DYNAMICS IN ELLIPTICALS
- IX AGN AND STARBURST HOSTS AT LARGE REDSHIFTS
- X CONFERENCE SUMMARY
- Subject Index
- Object Index
- Author Index
Imaging of MBG Starbursts: Preliminary Results (Poster paper)
Published online by Cambridge University Press: 05 May 2010
- Frontmatter
- Contents
- Preface
- List of Participants
- I INTRODUCTION
- II THE INNER PARSEC
- III THE CIRCUMNUCLEAR REGION
- IV GAS DYNAMICS AND STAR FORMATION IN BARRED AND NORMAL GALAXIES
- V NUCLEAR GAS AND LARGE-SCALE PROPERTIES OF AGN AND STARBURST HOSTS
- VI HOST GALAXY-AGN-NUCLEAR STARBURST CONNECTION
- Starbursts, Quasars, and their Environments (Invited paper) 234
- Nuclear Fueling in Two-Component Star-Gas Disks (Invited paper) 251
- Radio Loud Far-Infrared Galaxies 263
- Massive Central Black Holes as Generators of Chaos and Drivers of Large-Scale Dynamics
- Self-Gravitating Gas Dynamics: Growing Monsters and Fueling Starburstsin Disk Galaxies
- Radial Inflows in Disk Galaxies: Effects of Star Formation 279
- Self-Gravitating Gas Dynamics in a Galactic Central Region
- Nuclear Inflow under the Action of Instabilities
- Mid-IR Imaging of Interacting and Non-Interacting AGNs (Poster paper)
- Imaging of MBG Starbursts: Preliminary Results (Poster paper)
- Compact Extranuclear Structures of Mkn 298 (Poster paper)
- NGC 6814: a Very Normal Looking AGN Host Galaxy (Poster paper)
- ROSAT PSPC Observations of NGC 3079 (Poster paper)
- MK 231: AGN vs. Starburst? Steps Toward a Model (Poster paper)
- Extended Starburst Activity Induced by the Central AGN: a Model for NGC 1068 (Poster paper)
- NGC 2782, NGC 4102 and NGC 6764: Evidence for Starburst-Driven Winds
- AGN Winds and Nuclear Starbursts (Poster paper)
- VII GALAXY INTERACTIONS AND INDUCED ACTIVITY
- VIII GAS DYNAMICS IN ELLIPTICALS
- IX AGN AND STARBURST HOSTS AT LARGE REDSHIFTS
- X CONFERENCE SUMMARY
- Subject Index
- Object Index
- Author Index
Summary
OBSERVATIONS
The MBG survey (Montreal Blue Galaxy) is a spin-off project of the Montreal Cambridge Tololo (MCT) survey of southern subluminous blue stars (Demers et al. 1986). Using a subset of the plate material covering 7000 deg2, with b ≤ -40∘, we pick up all extended UV-bright objects. The analysis of our follow-up spectroscopy has shown that the bulk of our UV-bright candidates consists of H II galaxies or starbursts; the fraction of AGNs being somewhat less than 10% (Coziol et al. 1993). We expect to find ∼ 500 such galaxies, with magnitude B ≤ 15.5.
Recently, we undertook an imaging follow-up of our candidates to determine their morphology and search for clues to the origin of their activity. Our first sample consist of 11 MBG galaxies with strong H II-region like spectra suggesting an intense phase of star formation. Usually, these galaxies also possess relatively hot IRAS color typical of starburst galaxies (Sekiguchi 1987). Using our 1.6m telescope, located on mont Mégantic in Québec, Canada, we obtained CCD images, with BVRI filters. Details of the observations, reductions and analysis will be published elsewhere (Coziol, Barth, and Demers 1993). Following, is a summary of our first results.
We find mostly spiral galaxies with bright nuclear regions. There is a strong tendency to find early type galaxies. Further analysis of the surface photometry reveals that the bursts are located, preferentially, in the circumnuclear region prolonging far into the nucleus. This confirms the earlier spectral classification of our objects, using the excitation diagnostic diagram of [O III]λ5007/Hβ versus [N II]λ6584/Hα, which suggested that MBG objects are mostly starburst nuclei galaxies (see Salzer et al. 1989 for a definition).
- Type
- Chapter
- Information
- Mass-Transfer Induced Activity in Galaxies , pp. 296 - 297Publisher: Cambridge University PressPrint publication year: 1994