How to Sew the Buttons on the Coat that is the KS Law
Short summary:
How to Sew the Buttons on. the Coat that is the KS Law. Panel Discussion. KS Workshop. UCSD. Dec 19 2006. Threshold: Q ...
Long summary:
How to Sew the Buttons on the Coat that is the KS LawPage 1How to Sew the Buttons onthe Coat that is the KS LawPanel DiscussionKS WorkshopUCSDDec 19 2006Threshold: Qg=aGg1;*=ggn n 1.4 Page 2Rules for Panel Discussion Each panelist can give a shortpresentation ( 5 min) with no morethan 3 slides to set scene for debate. Afterwards we will have a discussionthat is open to everyone. Goal: to set agenda that can makemeaningful future progress.Page 3Assertion: Determination of SFR Has BothGlobal (10 kpc) and Local Aspects(1 pc) Threshold: H II regions strung like pearls along spiral arms (almost certainly global).Qg=aGg1;*=g <<1 (almost certainly local)Roberts (1969)*= (p)g(Shu 1973)Picture made stronger by GALEX results reported by Madore.Difference: Driven versus selfexcited spiral density waves?a = 8 km/sQ 1Q >> 1(azimuthal average)Page 4Spiral Substructure: FeathersShetty & Ostriker (2006)a = 6 km/s include B and selfgravity of gasLocal transient instability not characterizable bysimple Qgcriterion especially in presence of B.Page 5Spiral Substructure: FlocculenceImposed background forcingNonlinear response after 2.87 GyrChakrabarti Laughlin & Shu (2003)Do we know how a priori to get from global picture to actual SFR? No no honest EOS for ISM.
Source: cass.ucsd.edu
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