{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

L05 - Observa-onProjectI:Observingthe FullCycleoftheMoon...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 1/24/12 Observa-onProjectI:Observingthe FullCycleoftheMoon Aim:Understandingtherela-vemo-ons betweentheMoon&Sunbyobserving 1)theloca-onoftheMoonintheskyata fixedobserva-on-me 2)thephaseoftheMoon Due:1weekbeforetheFinalExam Observa-onProjectI:Observingthe FullCycleoftheMoon Howto? 1)fixyourownobserving-me(i.e.8:00pm)atleasttwo -mesaweek 2)sketchtheloca-onoftheMoon 3)sketchtheshapeoftheMoon 4)recordyourobservinglog.Itshouldincludethe followinginforma-on. Observing-me&date:StartEnd Weather Theal-tude(inangle)oftheMoonfromthehorizon Thedirec-onoftheMoon(i.e.SWorSE) anythoughtsornotes Example !"#$"!#% !% 1 1/24/12 Exoplanets:Detec-onMethod(Ch.2) ReviewonLecture3&4 Kepler's3rdlaw(lawofharmonics) P2 = R3 wherePinyears RinAU(EarthSundistance) Itstartsfrom F = ma Newtonianform Newton's2nd lawofmo-on whereM=MassoftheSun 2 1/24/12 Let'sputitalltogether. Thegeneralproper-esofthe exoplanetarysystems. 1.Mass 2.OrbitalShape (i.e.Eccentricity) 3.DistancefromHostStar 4.Numberofmembers &Layout Adap-veOp-cs(AO) EarthAtmospheredistortsthelight pa`ernsfromsources. AOtechniquedeformsthesurface ofmirrorundercomputercontrol duringobserva-ontoremovethe effectsofatmospherictubulence. AOon AOoff ExoplanetDetec-onMethods IndirectMethods RadialVelocity(DopplerShid) AstrometricMeasurement TransitMethod(LightCurve) Gravita-onalMicrolensing DirectMethod DirectImaging 3 1/24/12 RadialVelocityMethod DopplerShid?Whatisit? InordertouseRadialVelocity method,wefirstneedto understandtheproper-es oflight PropertyofLight:Radia-on BlackbodyRadia-on Blackbodyisaperfectabsorber& aperfectemi`er! Theamountofradia-onenergy increaseswithtemperature Stefan'sLaw Dependingonitstemperature,it emitsmorephotonsatcertain wavelengths Wien'sLaw PropertyofLight:Lines Spectrum&SpectralLineForma-on:Kirchhoff'sLaw Hot&diffuse Hot&dense Rela-vely colderthan con-nuumsource 4 1/24/12 Spectra,AstronomicalFingerPrint! AtomicStructure:Theprincipleof light(radia-on)forma-on H H H H Blackbodyradia-oninreality 5 1/24/12 PropertyofLight:DopplerEffect DopplerShidFormula RadialVelocity! Example:51Pegb V~70m/s RadialVelocity measuredfrom stellarspectraof 51Peg Q.Howmuchistheamountoftheline shidcorrespondingtoradialvelocityof 70m/s? 6 ...
View Full Document

  • Spring '07
  • Dr.HaywoodSmith,Jr
  • Let'sputitalltogether. Thegeneralproper-esofthe exoplanetarysystems, Dependingonitstemperature,it emitsmorephotonsatcertain wavelengths, Rela-vely colderthan con-nuumsource, RadialVelocity measuredfrom stellarspectraof, Theamountofradia-onenergy increaseswithtemperature Stefan'sLaw, recordyourobservinglog.Itshouldincludethe followinginforma-on

{[ snackBarMessage ]}

Ask a homework question - tutors are online