Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...205.3401i&link_type=abstract
American Astronomical Society Meeting 205, #34.01; Bulletin of the American Astronomical Society, Vol. 36, p.1401
Astronomy and Astrophysics
Astronomy
Scientific paper
We have been investigating the influence of microlensing on a variety of spectroscopic signatures relevant to circumstellar flows. Here we report on recent results for line profiles that form in spherically symmetric winds during a microlensing event. As a convenient test case, we have adopted a homologous velocity law (v ∝ r, from r=Rphot to rmax). Results are discussed for resonance scattering P Cygni lines and recombination emission lines. Somewhat surprisingly, the rectified line profiles show rather mild variations in response to microlensing. The reason is that both the line emission from the extended wind and the stellar photosphere are lensed, so that the strong magnification effects of lensing seen in either component are partially supressed when showing the continuum normalized spectrum (which is the common form of display for such data). Still, significant and observable variations in the line equivalent width do result.
This research has been supported in part by NSF grant AST-0354261.
Bryce H. M.
Hendry Martin A.
Ignace Richard
No associations
LandOfFree
Microlensing Effects on Emission Lines from Homologously Expanding Winds does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Microlensing Effects on Emission Lines from Homologously Expanding Winds, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Microlensing Effects on Emission Lines from Homologously Expanding Winds will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1637417