Showing astro-phShow all
3 papers · 1 filter
astro-ph1999
The Wind Momentum - Luminosity Relationship of Galactic A- and B- Supergiants
R. P. Kudritzki, J. Puls, D. J. Lennon +5
The Balmer lines of four A Ia - supergiants (spectral type A0 to A3) and fourteen B Ia and Ib - supergiants (spectral type B0 to B3) in the solar neighbourhood are analyzed by mean…
astro-ph1998
Detecting Luminous Gravitational Microlenses Using Spectroscopy
S. Mao, J. Reetz, D. L. Lennon
We propose a new method to detect the gravitational lenses in the ongoing microlensing experiments using medium and high resolution spectroscopy (resolution > 6000). Since the radi…
astro-ph1997
Real-Time Spectroscopy of Gravitational Microlensing Events - Probing the Evolution of the Galactic Bulge
D. Lennon, S. Mao, J. Reetz +3
We describe a real-time spectroscopic program to observe bright gravitational microlensing events toward the Galactic Bulge. The program is carried out using the NTT at ESO. We pre…