N. Palanque-Delabrouille, Centre d'Etudes de Saclay, on behalf on the EROS collaboration (cf. IAUC 6609), reports on observations of the second caustic crossing of the exotic gravitational microlensing event in progress toward the Small Magellanic Cloud (cf. IAUC 6935, 6939): "The 40 data points collected at the European Southern Observatory, La Silla, with the 1-m EROS telescope span the period June 18.23-18.45 UT. A linear decrease of the flux by about a factor of 5 occurred until June 18.31, followed by a slower rise by a factor of 2 in about 3 hr. This is compatible with the predictions made by both the MACHO and the PLANET (cf. http://www.astro.rug.nl/~planet/index.html) collaborations. Light curves will be posted at our web site http://www.lal.in2p3.fr/EROS/erosa.html as they become available."
International Astronomical Union Circular
- Pub Date:
- June 1998