Astronomy and Astrophysics – Astrophysics – Earth and Planetary Astrophysics
Scientific paper
2009-10-12
Astronomy and Astrophysics
Astrophysics
Earth and Planetary Astrophysics
16 pages including 3 figures. Submitted to ApJ
Scientific paper
At present, microlensing light curves from different telescopes and filters are photometrically aligned by fitting them to a common model. We present a second method based on photometry of common field stars. If two spectral responses are similar (or the color of the source is known) then this technique can resolve important ambiguities that frequently arise when predicting the future course of the event, and that occasionally persist even when the event is over. Or if the spectral responses are different, it can be used to derive the color of the source when that is unknown. We present the essential elements of this technique and apply it to the case of MOA-2007-BLG-192, an important planetary event for which the system may be a terrestrial planet orbiting a brown dwarf or very low mass star. The refined estimate of the source color that we derive here, V-I=2.36 +- 0.03, will aid in making the estimate of the lens mass more precise.
Bennett David P.
Bond Ian A.
Dong Subo
Gould Andrew
Kozlowski Szymon
No associations
LandOfFree
A Second Method to Photometrically Align Multi-Site Microlensing Light Curves: Source Color in Planetary Event MOA-2007-BLG-192 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 A Second Method to Photometrically Align Multi-Site Microlensing Light Curves: Source Color in Planetary Event MOA-2007-BLG-192, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Second Method to Photometrically Align Multi-Site Microlensing Light Curves: Source Color in Planetary Event MOA-2007-BLG-192 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-463662