Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...357..426a&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 357, July 10, 1990, p. 426-434.
Astronomy and Astrophysics
Astrophysics
9
H I Regions, Interacting Galaxies, Interstellar Matter, Neutral Gases, Very Large Array (Vla), Continuous Radiation, Elliptical Galaxies, Ionized Gases, Radio Emission, Stellar Mass Ejection, Galaxies: Individual (Ngc 5898, Ngc 5903), Galaxies: Interactions, Galaxies: Interstellar Matter
Scientific paper
Neutral hydrogen observations made with the VLA are presented of the remarkable binary elliptical system NGC 5898/5903. NGC 5898 has been shown by Bertola and Bettoni to contain ionized gas which counter- rotates with respect to the stars suggesting that the gas has been acquired from outside the galaxy. Although no H I was detected from NGC 5898, extended emission, including long filaments, was found in and around the companion NGC 5903. The results suggest that NGC 5903 is currently undergoing a major accretion event which may be linked to a similar event which occurred at an earlier time in NGC 5898. Within NGC 5903 the H I is consistent with the early development of an accretion disk parallel to the minor axis of the optical isophotes. The kinematics of the gas and asymmetry of the H I distribution suggest that the accretion has occurred recently (T = 2 × 108 yr) and the H I is not in a state of equilibrium with the potential of the galaxy. The infalling gas may also be responsible for the usual radio continuum emission which peaks near the center of NGC 5903 but extends outside the optical dimensions of the galaxy.
Appleton Phil N.
Pedlar Alan
Wilkinson Althea
No associations
LandOfFree
Extended neutral hydrogen emission in the NGC 5903/5898 binary elliptical system - Evidence for a double-galaxy accretion event does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Extended neutral hydrogen emission in the NGC 5903/5898 binary elliptical system - Evidence for a double-galaxy accretion event, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Extended neutral hydrogen emission in the NGC 5903/5898 binary elliptical system - Evidence for a double-galaxy accretion event will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1092694