Accurate galactic N(H) values towards quasars and AGN

DSpace/Manakin Repository

Accurate galactic N(H) values towards quasars and AGN

Citable link to this page

 

 
Title: Accurate galactic N(H) values towards quasars and AGN
Author: Elvis, Martin; Wilkes, Belinda Jane; Lockman, Felix J.

Note: Order does not necessarily reflect citation order of authors.

Citation: Elvis, Martin, Belinda J. Wilkes, and Felix J. Lockman. 1989. “Accurate Galactic N(H) Values Towards Quasars and AGN.” The Astronomical Journal 97 (March): 777. doi:10.1086/115022.
Full Text & Related Files:
Abstract: Integrated Galactic 21-cm column densities toward about 174 quasars and AGN are presented. The data are corrected for stray radiation, using the technique of Lockman et al. (1986). Because of the 21-arcmin beam size of the 140-ft telescope used in the study, the uncertainty in N(H) due to angular variations in the H I of the Galaxy at high latitudes is minimized. The column densities are accurate to about 1 X 10 to the 19th atoms/sq cm, or 5 percent, whichever is larger. Errors above N(H) of about 4 X 10 to the 20th atoms/sq cm are dominated by opacity uncertainties.
Published Version: doi:10.1086/115022
Other Sources: http://adsabs.harvard.edu/abs/1989AJ.....97..777E
Terms of Use: This article is made available under the terms and conditions applicable to Other Posted Material, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#LAA
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:30212152
Downloads of this work:

Show full Dublin Core record

This item appears in the following Collection(s)

 
 

Search DASH


Advanced Search
 
 

Submitters