Gravitational microlensing as a test of stellar model atmospheres

Details Gravitational microlensing as a test of stellar model atmospheres Gravitational microlensing as a test of stellar model atmospheres

2002-10-02

arxiv.org/abs/astro-ph/0210085v1

Astronomy & Astrophysics, 388, L1-L4 (2002)

Astronomy and Astrophysics

Astrophysics

4 pages, 4 figures, Astronomy & Astrophysics (Letters), vol. 388, L1 (2002)

Scientific paper

10.1051/0004-6361:20020507

We present calculations illustrating the potential of gravitational microlensing to discriminate between classical models of stellar surface brightness profiles and the recently computed ``Next Generation'' models of Hauschildt et al. These spherically-symmetric models include a much improved treatment of molecular lines in the outer atmospheres of cool giants -- stars which are very typical sources in Galactic bulge microlensing events. We show that the microlensing signatures of intensively monitored point and fold caustic crossing events are readily able to distinguish between NextGen and the classical models, provided a photometric accuracy of 0.01 magnitudes is reached. This accuracy is now routinely achieved by alert networks, and hence current observations can discriminate between such model atmospheres, providing a unique insight on stellar photospheres.

Affiliated with

Also associated with

No associations

Rating

Gravitational microlensing as a test of stellar model atmospheres 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 Gravitational microlensing as a test of stellar model atmospheres, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gravitational microlensing as a test of stellar model atmospheres will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-24438