Variability in the Young Open Cluster 2516

Details Variability in the Young Open Cluster 2516 Variability in the Young Open Cluster 2516

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001tysc.confe..76w&link_type=abstract

Two Years of Science with Chandra, Abstracts from the Symposium held in Washington, DC, 5-7 September, 2001, meeting abstract.

Physics

Normal Stars And White Dwarfs

Scientific paper

We discuss our ongoing analysis of Chandra observations of the young open cluster NGC 2516. NGC 2516 was observed by Chandra to boresight correct the spacecraft's focal plane instruments. Because of this, it observed NGC 2516 with all four imaging arrangements available with Chandra. In addition, it has been observed as part of the HRC guaranteed time program and is scheduled for return boresight calibration visits. This makes it the best cluster to study for long term variability. Sometimes referred to as the ``Southern Pleiades", NGC 2516 is about 100 Myrs old and less than 400 pc away. We have detected about 250 sources, about half of which have been confirmed as cluster members. We explore techniques of quantifying variability, and for combining ACIS and HRC Chandra data for timing analysis. We have been able to combine almost 130 ks of observation time, spread over four epochs to study variability in this cluster on time scales of hours, minutes and months.

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