The circumnuclear disk and ionized gas filaments as remnants of tidally disrupted clouds

RH Sanders*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Abstract

Sticky particle calculations indicate that a coherent structure, a dispersion ring, forms when a cloud on a low angular momentum orbit passes close to the dynamical center of a potential containing a point mass. The cloud is tidally stretched and differentially wrapped, and dissipation in shocks organizes the gas into a precessing off-set elliptical ring which can persist for many rotation periods. The morphology and kinematics of the circumnuclear disk (CND) between 2 and 5 pc and the Northern arm in the inner I pc are well-represented by such structures. In the case of the Northern Arm, strong shocks which arise during the formation of the dispersion ring can lead to star formation even in the near tidal held of a massive black hole.

Original languageEnglish
Title of host publicationCENTRAL PARSECS OF THE GALAXY
EditorsH Falcke, A Cotera, WJ Duschl, F Melia, MJ Rieke
Place of PublicationSAN FRANCISCO
PublisherASTRONOMICAL SOC PACIFIC
Pages250-259
Number of pages10
ISBN (Print)1-58381-012-9
Publication statusPublished - 1999
EventGalactic Center Workshop on the Central Parsecs of the Galaxy - , Azerbaijan
Duration: 7-Sep-199811-Sep-1998

Publication series

NameASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES
PublisherASTRONOMICAL SOC PACIFIC
Volume186

Other

OtherGalactic Center Workshop on the Central Parsecs of the Galaxy
Country/TerritoryAzerbaijan
Period07/09/199811/09/1998

Keywords

  • GALACTIC-CENTER
  • MOTIONS

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