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OutlineforLecture1:CoursegoalsCoursetopics
- anyextra?Coursestructure
- lectures- optionalworkshops–topics
Coursegrading- homeworks- journaldiscussion- courseproject(breakdown)- gradedivision–vote
Courseschedule- Lectures&workshops–fine-tuneworkshopschedule- Knownmissingdaysandmake-upclasses–identify- Otherimportantevents–CASSseminar&journalclub
QUESTIONSContextImportantpatterns
- distributionofstars&gasinMW,othergalaxies(includingkinematics)- brightnesses&colors–HRdiagram- chemicalabundancepatterns- otherstarrelatedstuff–supernovae(types),planetarynebulae,SNR
WhatweknowfromSun- apparentsize->actualsizefromAUmeasurementfromVenusorbit- mass(orGM)fromplanetaryorbits,laterGReffects- temperature&composition–fromspectroscopy,indicatesprimarilyplasma- luminosity–fromsolarconstant,distance- averagedensity-estimatecore=>mustbegas- interiorpressure–hydrostaticequilibrium- interiortemperature–nonrelativisticplasma- spotpatterns–rotation,B-field- helioseismology–internalstructure,energytransport,rotationalstructure- other–neutrinoemission,abundancepatternsrelativetoplanets,planets
themselvesgiveimportantinformation(age!)ScalingupviaHRdiagram
- absolutebrightness(typicallyV¶llaxneeded)->luminosity->4πR2sT4- color&spectrum->T=>R(linesofconstantradius)
o interestingoutliers–supergiants,whitedwarfs- starcounts–ageinregion(highdensity=longphase)- differentHRdiagramsfordifferentsystems–time,compositionarefactors- asteroseismology–Keplercannowdothisformanystars
Physics223GraduateStellarStructure
22September2016
h9p://pono.ucsd.edu/~adam/teaching/phys223/
Whatarethegoalsofthiscourse?
• AdetailedexaminaFonofthestructureandphysicalprocessesgoverningnormalstars
• FamiliarizaFonwiththetoolsandresourcesforconducFonstellarastrophysicsresearch
• FamiliarizaFonwiththecurrentbodyofresearchandoutstandingproblems
• DevelopyourprofessionalscienFficskills:literatureresearch,quanFtaFveanalysis,esFmaFon,programming,scienFficwriFngandpresentaFon
Topics• FundamentalproperFesofstarsandcosmologicalcontext;• Star&planetformaFon• EquaFonsofstellarstructure&polytropemodels;• ProperFesofgas,plasma,degenerateand“photonic”
states;• EnergygeneraFonandnucleosynthesis;• EnergytransportviaradiaFon,conducFonandconvecFon;• Pre-MainSequence,MainSequenceandPost-Main
SequenceevoluFon• Degeneratestars(browndwarfs,whitedwarfs,neutron
stars)• [maybe]TheSunasastar;• [maybe]StellarmagneFcacFvity.
Arethereothertopicsyouwouldliketodiscuss?
Classschedule
• TuTh12:30-2pmLectureSERF383• We[1:30-3pm]OpFonalWorkshopSERF383– Python,MESA,MonteCarloMethods,LaTeX,literatureresearch,datavisualizaFon,scienFficwriFng,effecFvepresentaFons
• Classmakeupdayis[]– Th9/29&Tu11/8willneedtoberescheduled
• Otherimportantevents:– CASSSeminarWe4-5pminSERF383– CASSJournalClubFr12-1pminSERF383(withpizza!)
Assignments• XX%4homeworkassignments– biweekly,3-5hours– Willincludeprogramming
• XX%ClassJournalDiscussion– discussionleadinclass– 1-2pagesummaryofarFclewriteup
• XX%CourseProject– Proposal– 10-15pagepaper– 10-15minutepresentaFonduringfinalsweek
• XX%ClassparFcipaFon
h9p://mesa.sourceforge.net/
Assignments• XX%4homeworkassignments– biweekly,3-5hours– Willincludeprogramming
• XX%ClassJournalDiscussion– discussionleadinclass– 1-2pagesummaryofarFclewriteup
• XX%CourseProject– Proposal– 10-15pagepaper– 10-15minutepresentaFonduringfinalsweek
• XX%ClassparFcipaFon
ClassJournalDiscussions
Assignments• XX%4homeworkassignments– biweekly,3-5hours– Willincludeprogramming
• XX%ClassJournalDiscussion– discussionleadinclass– 1-2pagesummaryofarFclewriteup
• XX%CourseProject– Proposal(LaTeX)– 10-15pagepaper(LaTeXAASJournalstyle)– 10-15minutepresentaFonduringfinalsweek
• XX%ClassparFcipaFon
Assignments• [20-40]%4homeworkassignments– biweekly,3-5hours– Willincludeprogramming
• [0-20]%ClassJournalDiscussion– discussionleadinclass– 1-2pagesummaryofarFclewriteup
• [30-70]%CourseProject– Proposal(LaTeX)– 10-15pagepaper(LaTeXAASJournalstyle)– 10-15minutepresentaFonduringfinalsweek
• [0-10]%ClassparFcipaFon
QUESTIONS?
PhotobyJohnLemieuxhttps://www.flickr.com/photos/newdimensionfilms/4726096945
Russell1914(PopularAstronomy.22,275)
15
color
brightne
ss
M13GlobularCluster7kpcaway11.7Gyrold
Asplundetal.(2009,ARA&A,47,481-522)