MISSING LENSED IMAGES AND THE GALAXY DISK MASS IN CXOCY J220132.8-320144
Name
Schechter_Missing lensed.pdf
Size
1.21 MB
Format
Adobe PDF
Checksum (MD5)
36597995ba9e6945c4f9a8ce0f4896d7
Author(s)
Chen, Jacqueline
Lee, Samuel K.
Castander, Francisco-Javier
Maza, Jose
Schechter, Paul L.
Date Issued
May 2013
Journal
The Astrophysical Journal
Publisher
IOP Publishing
Citation
Chen, Jacqueline, Samuel K. Lee, Francisco-Javier Castander, Jose Maza, and Paul L. Schechter. “MISSING LENSED IMAGES AND THE GALAXY DISK MASS IN CXOCY J220132.8-320144.” The Astrophysical Journal 769, no. 1 (May 6, 2013): 81.
Version
Author's final manuscript
Abstract
The CXOCY J220132.8-320144 system consists of an edge-on spiral galaxy lensing a background quasar into two bright images. Previous efforts to constrain the mass distribution in the galaxy have suggested that at least one additional image must be present. These extra images may be hidden behind the disk which features a prominent dust lane. We present and analyze Hubble Space Telescope observations of the system. We do not detect any extra images, but the observations further narrow the observable parameters of the lens system. We explore a range of models to describe the mass distribution in the system and find that a variety of acceptable model fits exist. All plausible models require 2 mag of dust extinction in order to obscure extra images from detection, and some models may require an offset between the center of the galaxy and the center of the dark matter halo of 1 kpc. Currently unobserved images will be detectable by future James Webb Space Telescope observations and will provide strict constraints on the fraction of mass in the disk.
MIT Department
Massachusetts Institute of Technology. Department of Physics
MIT Kavli Institute for Astrophysics and Space Research
Terms of Use
Creative Commons Attribution-Noncommercial-Share Alike
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1088/0004-637x/769/1/81
