Probing MACHOs by observation of M 31 pixel lensing with the 1.5 m Loiano telescope

July 2007 • 2007A&A...469..115C

Authors • Calchi Novati, S. • Covone, G. • de Paolis, F. • Dominik, M. • Giraud-Héraud, Y. • Ingrosso, G. • Jetzer, Ph. • Mancini, L. • Nucita, A. • Scarpetta, G. • Strafella, F. • Gould, A.

Abstract • We analyse a series of pilot observations in order to study microlensing of (unresolved) stars in M 31 with the 1.5 m Loiano telescope, including observations on both identified variable source stars and reported microlensing events. We also look for previously unknown variability and discover a nova. We discuss an observing strategy for an extended campaign with the goal of determining whether MACHOs exist or whether all microlensing events are compatible with lens stars in M 31.

Links

• PREPRINT http://arxiv.org/abs/0704.1408
• NED https://ned.ipac.caltech.edu/uri/NED::InRefcode/2007A%26A...469..115C
• POSTSCRIPT https://www.aanda.org/10.1051/0004-6361:20077075/postscript
• ELECTR http://www.aanda.org/htbin/resolve?bibcode=2007A%26A...469..115CFUL
• SIMBAD http://simbad.u-strasbg.fr/simbo.pl?bibcode=2007A%26A...469..115C
• PDF https://www.aanda.org/10.1051/0004-6361:20077075/pdf
• SPIRES http://inspirehep.net/search?p=find+eprint+arXiv:0704.1408