[vsnet-alert 5097] (fwd) EROS-BLG-2000-5, Cusp Crossing

[Taichi Kato <tkato>]

(fwd) EROS-BLG-2000-5, Cusp Crossing

   Forwarded message: caustic-crossing event!

Date: Tue, 11 Jul 2000 13:15:03 -0500 (EST)
From: GMAN Account <gman@bustard.phys.nd.edu>
Subject: EROS-BLG-2000-5, Cusp Crossing

Dear Colleagues-
 
   Observations by the Microlensing Planet Search (MPS) Collaboration
of on-going event EROS-BLG-2000-5 indicate a rapid brightening of this
event. It has brightened by 0.45 mag over the past 9 hours which suggests
that the cusp crossing feature recently suggestted by the PLANET Collaboration
is already underway.

   High resolution spectra were previously obtained by D. Minniti, 
B. Barbuy, E. Bica, S. Ortolani, V. Hill (ESO), R.M. Rich (UCLA, USA), 
K.H. Cook (LLNL, USA), T. Vandehei (UCSD, USA) with the VLT, and these
indicate that the source is a late K (4000 K) giant.

   Further spectroscopy during the cusp crossing is strongly encouraged
as this may yield details about the center-to-limb variation of the spectral
lines. 

Event                         EROS BLG-2000-5
RA      (J2000)               17 53 11.5
DEC     (J2000)               -30 55 35
R_0                           17.2
V_0                           18.4
 
Finding charts and lightcurves are available from the EROS Alert page:
httP://www-dapnia.cea.fr/Spp/Experiences/EROS/e-blg-2000-5/index.html

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