Bending instabilities in galaxy merger remnants

Lars Hernquist, Jeremy S. Heyl, David N. Spergel

Research output: Contribution to journalArticle

10 Scopus citations

Abstract

Sufficiently elongated remnants produced from mergers of spiral galaxies are subject to a violent "firehose" instability that rapidly drives the remnant toward a new, less elongated equilibrium, possessing a variety of morphological peculiarities. This mechanism can account for the apparent dearth of highly flattened ellipticals, may be responsible for some features observed in early-type galaxies, including boxy isophotes and X-structures, and removes a potential objection to the merger hypothesis for the origin of early-type galaxies.

Original languageEnglish (US)
Pages (from-to)L9-L12
JournalAstrophysical Journal
Volume416
Issue number1 PART 2
DOIs
StatePublished - Oct 10 1993

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Keywords

  • Galaxies: elliptical and lenticular, cD
  • Galaxies: formation
  • Galaxies: interactions
  • Galaxies: kinematics and dynamics

Fingerprint Dive into the research topics of 'Bending instabilities in galaxy merger remnants'. Together they form a unique fingerprint.

  • Cite this

    Hernquist, L., Heyl, J. S., & Spergel, D. N. (1993). Bending instabilities in galaxy merger remnants. Astrophysical Journal, 416(1 PART 2), L9-L12. https://doi.org/10.1086/187058