Kim Griest

• Gallart, Stetson, Hardy, Pont, & Zinn (2004), search for a stellar
population in a deep surface brightness CMD, and found no
evidence for any stellar halo
• However, Minniti, et al (2003), and Alves (2004) found RVs for 43
RR Lyaes and discovered an old and hot stellar halo! But they say
it is too small to account for all the extra microlensing
• But the structure of the LMC is being questioned: van der Marel,et
al (2002) says the LMC disk is not circular, but Nikolaev, et al.
(2004) disagree, saying it is warped. Both say it does not probably
affect self lensing much (e.g. Mancinit etal 2003 agree), but it does
show the LMC is still not well understood.
• Summary: no clear answer yet