The Formation of Compact Groups of Galaxies. II. X-Ray Properties. Diaferio, A. The Astronomical Journal, 109(3):868-879, 6, 1995.
The Formation of Compact Groups of Galaxies. II. X-Ray Properties [pdf]Paper  The Formation of Compact Groups of Galaxies. II. X-Ray Properties [link]Website  abstract   bibtex   
We use N-body/hydrodynamic simulations of collapsing rich galaxy groups to predict X-ray properties of compact groups. The model is consistent with the X-ray observations of a few compact groups and naturally explains the correlation between the spiral fraction and the velocity dispersion and crossing time observed in compact groups. The model predicts a correlation between X-ray luminosity and gas temperature only if the systems are bound. The model is an extension of the one used by Diaferio et at. [AJ, 107,868(1994)] to show that substructures within collapsing rich loose groups have dynamical properties and a multiplicity function similar to the Hickson compact groups. So far, both X-ray and optical results suggest that most observed compact groups are three- dimensional systems rather than chance alignments of unrelated galaxies. We propose some direct observational tests to discriminate among models.
@article{
 title = {The Formation of Compact Groups of Galaxies. II. X-Ray Properties},
 type = {article},
 year = {1995},
 identifiers = {[object Object]},
 keywords = {GALAXIES: COMPACT,X-RAYS: GALAXIES},
 pages = {868-879},
 volume = {109},
 websites = {http://adsabs.harvard.edu/cgi-bin/bib_query?1995AJ....109.2293D},
 month = {6},
 id = {40b92444-2874-371e-920c-1253273f1c34},
 created = {2017-03-14T03:07:39.000Z},
 accessed = {2017-02-10},
 file_attached = {true},
 profile_id = {d9ca9665-cda3-3617-b3e8-ecfc7a8d9739},
 group_id = {5a95a0b6-1946-397c-b16a-114c6fdf3127},
 last_modified = {2017-07-05T00:44:24.632Z},
 read = {false},
 starred = {false},
 authored = {false},
 confirmed = {true},
 hidden = {false},
 citation_key = {Diaferio1994a},
 notes = {NULL},
 private_publication = {false},
 abstract = {We use N-body/hydrodynamic simulations of collapsing rich galaxy groups to predict X-ray properties of compact groups. The model is consistent with the X-ray observations of a few compact groups and naturally explains the correlation between the spiral fraction and the velocity dispersion and crossing time observed in compact groups. The model predicts a correlation between X-ray luminosity and gas temperature only if the systems are bound. The model is an extension of the one used by Diaferio et at. [AJ, 107,868(1994)] to show that substructures within collapsing rich loose groups have dynamical properties and a multiplicity function similar to the Hickson compact groups. So far, both X-ray and optical results suggest that most observed compact groups are three- dimensional systems rather than chance alignments of unrelated galaxies. We propose some direct observational tests to discriminate among models.},
 bibtype = {article},
 author = {Diaferio, Antonaldo},
 journal = {The Astronomical Journal},
 number = {3}
}
Downloads: 0