A Semi-analytical Line Transfer (SALT) Model. II: The Effects of a Bi-conical Geometry

Cody Carr, Claudia Scarlata, Nino Panagia, Alaina Henry

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

We generalize the semi-analytical line transfer model recently introduced by Scarlata & Panagia for modeling galactic outflows, to account for bi-conical geometries of various opening angles and orientations with respect to the line of sight to the observer, as well as generalized velocity fields. We model the absorption and emission component of the line profile resulting from resonant absorption in the bi-conical outflow. We show how the outflow geometry impacts the resulting line profile. We use simulated spectra with different geometries and velocity fields to study how well the outflow parameters can be recovered. We find that geometrical parameters (including the opening angle and the orientation) are always well recovered. The density and velocity field parameters are reliably recovered when both an absorption and an emission component are visible in the spectra. This condition implies that the velocity and density fields for narrow cones oriented perpendicular to the line of sight will remain unconstrained.

Original languageEnglish (US)
Article number143
JournalAstrophysical Journal
Volume860
Issue number2
DOIs
StatePublished - Jun 20 2018

Keywords

  • ISM: jets and outflows
  • galaxies: ISM
  • galaxies: starburst
  • intergalactic medium

Fingerprint Dive into the research topics of 'A Semi-analytical Line Transfer (SALT) Model. II: The Effects of a Bi-conical Geometry'. Together they form a unique fingerprint.

Cite this