Variable Stars In The MOA Data Base

Details Variable Stars In The MOA Data Base Variable Stars In The MOA Data Base

Aug 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006iaujd..13e..35s&link_type=abstract

Exploiting Large Surveys for Galactic Astronomy, 26th meeting of the IAU, Joint Discussion 13, 22-23 August 2006, Prague, Czech

Astronomy and Astrophysics

Astronomy

Scientific paper

The Microlensing Observations in Astrophysics (MOA) Collaboration has generated a large volume of photometric data during its routine microlensing survey observations. Data was collected by MOA using a 0.6 m telescope at Mt John University Observatory, New Zealand. In 2004, a new 1.8-m wide-field telescope (MOA-II) was commissioned and became fully operational at the beginning of this year. Tens of millions of stars will be monitored simultaneously every clear night and a total amount of about 10 TB of new data will be accumulated per year. This paper shows a preliminary analysis of MOA-I data base in search for new and unusual variables. The observational data of about 120,000 variable stars towards the Galactic Bulge obtained from 1999 November till 2005 November have been analysed. In addition to well known types of regular and semiregular variable stars, a number of irregular variables has also been found.

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