Optical Depth from Realistic Microlensing Models of M31
Abstract
We provide a set of microlensing optical depth maps for M31. Optical depths toward Andromeda were calculated on the basis of a four-component model of the lens and source populations: disk and bulge sources lensed by bulge, M31 halo, and Galactic halo lenses. We confirm the high optical depth and the strong optical depth gradient along the M31 minor axis due to a dark halo of lenses and also discuss the magnitude of the self-lensing due to the bulge. We explore how the shape of the optical depth maps to M31 vary with the halo parameters core radius and flattening. (c) 2000 The American Astronomical Society.
- Authors:
- Publication Date:
- OSTI Identifier:
- 20217582
- Resource Type:
- Journal Article
- Journal Name:
- Astrophysical Journal
- Additional Journal Information:
- Journal Volume: 535; Journal Issue: 2; Other Information: PBD: 1 Jun 2000; Journal ID: ISSN 0004-637X
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; GALAXIES; OPTICAL DEPTH CURVE; GRAVITATIONAL LENSES; MATHEMATICAL MODELS; INTERSTELLAR SPACE; EXPERIMENTAL DATA; THEORETICAL DATA
Citation Formats
Gyuk, Geza, and Crotts, Arlin. Optical Depth from Realistic Microlensing Models of M31. United States: N. p., 2000.
Web. doi:10.1086/308896.
Gyuk, Geza, & Crotts, Arlin. Optical Depth from Realistic Microlensing Models of M31. United States. https://doi.org/10.1086/308896
Gyuk, Geza, and Crotts, Arlin. 2000.
"Optical Depth from Realistic Microlensing Models of M31". United States. https://doi.org/10.1086/308896.
@article{osti_20217582,
title = {Optical Depth from Realistic Microlensing Models of M31},
author = {Gyuk, Geza and Crotts, Arlin},
abstractNote = {We provide a set of microlensing optical depth maps for M31. Optical depths toward Andromeda were calculated on the basis of a four-component model of the lens and source populations: disk and bulge sources lensed by bulge, M31 halo, and Galactic halo lenses. We confirm the high optical depth and the strong optical depth gradient along the M31 minor axis due to a dark halo of lenses and also discuss the magnitude of the self-lensing due to the bulge. We explore how the shape of the optical depth maps to M31 vary with the halo parameters core radius and flattening. (c) 2000 The American Astronomical Society.},
doi = {10.1086/308896},
url = {https://www.osti.gov/biblio/20217582},
journal = {Astrophysical Journal},
issn = {0004-637X},
number = 2,
volume = 535,
place = {United States},
year = {Thu Jun 01 00:00:00 EDT 2000},
month = {Thu Jun 01 00:00:00 EDT 2000}
}
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