Monday, Nov 21 meeting at STScI with Alex, Jon, and Maurice

*Emma's paper: 

main question: how plausible are the Mdots we're finding for (even) the well-behaved objects (eps Ori, zeta Ori, xi Per, 9 Sgr) -- about a factor of 5 below Vink's Mdots (and how much below unclumped H-alpha?  i.e. what f_cl values are required?)

related question: if something is making the line profiles in the other stars (the poorly behaved ones) look non-windy, then isn't it possible that that same effect/phenomenon is affecting the well-behaved objects too, but just to a lesser extent (thus rendering the derived Mdots suspect)? 

CWS X-ray emission in the poorly behaved objects -- plausible, given their soft spectra, low Lxs, and broad (but symmetric and unshifted) emission lines?  Given Marc's preliminary results presented in Quebec, maybe it is plausible.  But, it would be strange if CWS X-rays conspired to have Lx ~ 10^-7Lbol, just like the EWS sources. 

Specific objects with very low Mdots, if we take their lines to be due entirely to EWSs: 

Cyg OB2 8A 
HD 150136
iota Ori
delta Ori
zeta Oph

What about HD 93250? (I mean, it's a binary, no question, and almost no question the X-rays are contaminated by CWS -- they're pretty hard; but should we include this in the sample at all?)  Emma was able to fit only three lines, putting it in the same category as 15 Mon and tau CMa, which we're excluding.  But the data quality is better than those two stars; however the plasma temperature is higher so there are a fair number of counts in the continuum and not so many in the lines.  Hugues Sana has discovered a close binary companion, recently, so ultimately we'd reject this star on that basis, but maybe we should include it to begin with (as we are the five objects listed immediately above). 

**Other topics of potential discussion on Monday: 

*Porosity paper II - RGS re-reduction?  What else needs to be done? 

*B stars with weak UV wind signatures?  What are the true mass-loss rates and wind velocity structure?  What can be done with the existing UV spectral data? What is the relation to the observed X-rays?  (This is an old issue for me and Alex; but…is there productive work to be done there?)

*Possibility of ROSAT O star based NASA ADAP proposal -- PSPC spectra to constrain wind absorption and ionization models; other tools or analysis that could come out of such a project? 

*LDI simulations - what directions can we most profitably go?  Multi-D, resolving shocks and calculating X-ray emission? Self-consistent g_rad calc? Clumping statistics, stratification?