Title:  X-ray Spectroscopy of M 31 Bulge Sources

Object: M 31 bulge
Exposure:  3 pointings at 250 ks each
Lead scientist: HLM
[X] Primary or [ ] Backup
Constraints (none/easy/average) NONE
[ ] TOO?

Brief description:

Three pointings of 250 ks each within 1-2' of the core of M 31.  The =
objectives are to measure ISM edges, look for odd abundances in =
absorbing material, measure narrow emission lines in XRBs, measure lines =
of SNRs, track variability of bulge sources, measure spectra of =
supersoft sources, and find unusual XRBs.  Three pointings will provide =
a wider view of the bulge at high resolution to sample more sources than =
a single position at 750 ks.

Pointers to any additional material.: =
https://wikis.mit.edu/confluence/download/attachments/82314359/M31_hetgs.pdf