Overview of the Overview of the Hartnell Astronomy Hartnell Astronomy

Research InquiryResearch Inquiry

Deisgn Team:Deisgn Team:

Anne Metevier, Jennifer Lotz, Pimol Anne Metevier, Jennifer Lotz, Pimol Moth, Lindsey Pollack, Candace Moth, Lindsey Pollack, Candace

ChurchChurch

EHR Meeting, 19 December 2005EHR Meeting, 19 December 2005

Inquiry GoalsInquiry Goals

Attitude-basedAttitude-based Build students’ confidenceBuild students’ confidence

Succeed in research settingSucceed in research setting Foster a sense of communityFoster a sense of community

Skills-basedSkills-based Give students practice using research skillsGive students practice using research skills

Generating questionsGenerating questions Transforming observations via plotting, interpreting Transforming observations via plotting, interpreting

datadata Developing explanations from evidenceDeveloping explanations from evidence Oral and written communicationOral and written communication

Conveying specific scientific content is NOT a key goal!

BeforeBefore the Inquiry Activity the Inquiry Activity

~2 days of background lectures on ~2 days of background lectures on doppler shift, the distant universe, doppler shift, the distant universe, light and spectralight and spectra

Question-generating activityQuestion-generating activity Present unfamiliar image, have Present unfamiliar image, have

students write down questions about itstudents write down questions about it

Inquiry Time LineInquiry Time Line 20 min. 20 min. Short intro & stated goalsShort intro & stated goals 70 min. 70 min. Starters, 3 rotationsStarters, 3 rotations 15 min. 15 min. Gallery walk, form groups Gallery walk, form groups

of 2-3 studentsof 2-3 students 4 hrs. 4 hrs. Investigations (split over 4 Investigations (split over 4

days)days) 10 min.10 min. Thinking tools (as needed Thinking tools (as needed

in in individual groups)individual groups) 30 min.30 min. If two groups working on If two groups working on

same starter, groups meet same starter, groups meet to to discuss findings and discuss findings and

approaches.approaches. 45 min. 45 min. Poster preparation Poster preparation 10 min.10 min. Sharing out (10 min/group)Sharing out (10 min/group) 30 min. 30 min. SynthesisSynthesis Final abstracts due after synthesis. (two Final abstracts due after synthesis. (two

iterations -- about 90 min. of informal iterations -- about 90 min. of informal time)time)

StartersStarters 3 Posters3 Posters

Galaxy morphologies -- Galaxy morphologies -- Hubble UDF imageHubble UDF image

Rotation curves -- Poster Rotation curves -- Poster with DEEP datawith DEEP data

AGNs -- “Mystery AGNs -- “Mystery Galaxies” posterGalaxies” poster

Research Inquiry Stations: Galaxy Research Inquiry Stations: Galaxy MorphologiesMorphologies

Content Areas:Content Areas: Galaxy Classification -- looking at different types of dataGalaxy Classification -- looking at different types of data

Images, surface brightness profiles, contour maps, spectraImages, surface brightness profiles, contour maps, spectra Galaxy subcomponents: disks, bulges, spiral arms, barsGalaxy subcomponents: disks, bulges, spiral arms, bars

Exponential and de Vaucouleurs surface brightness profilesExponential and de Vaucouleurs surface brightness profiles Components not easily fit: spiral arms, bars, star forming Components not easily fit: spiral arms, bars, star forming

clumpsclumps Galaxy morphologies vs. redshiftGalaxy morphologies vs. redshift Selection effects: apparent sizes, viewing angleSelection effects: apparent sizes, viewing angle

Tools:Tools: Color images, contour mapsColor images, contour maps Ellipse measurements, models, residualsEllipse measurements, models, residuals Graphical analysis software for SB analysisGraphical analysis software for SB analysis RedshiftsRedshifts Useful websites with sims of mergers, etc.Useful websites with sims of mergers, etc.

Research Inquiry Stations: Spectra & Research Inquiry Stations: Spectra & Rotation CurvesRotation Curves

Content Areas:Content Areas: 1D vs. 2D spectra1D vs. 2D spectra Viewing angleViewing angle Relationship between mass distribution and rotation curve Relationship between mass distribution and rotation curve

shapeshape Solid body, Keplerian rotation, dark matterSolid body, Keplerian rotation, dark matter

Tools:Tools: 1D and 2D spectra of edge-on and face-on galaxies, inclined 1D and 2D spectra of edge-on and face-on galaxies, inclined

disk with slit at wrong PA, galaxies with broadened emission disk with slit at wrong PA, galaxies with broadened emission and absorption linesand absorption lines

Stellar and galaxy spectra for comparisonStellar and galaxy spectra for comparison Solid body rotation demonstrator (turntable)Solid body rotation demonstrator (turntable) Keplerian rotation demonstrator (Vortex)Keplerian rotation demonstrator (Vortex) Doppler effect demonstrator (Doppler ball)Doppler effect demonstrator (Doppler ball) Worksheet on planetary orbitsWorksheet on planetary orbits

Research Inquiry Stations: AGNResearch Inquiry Stations: AGN Content Areas:Content Areas:

ClassificationClassification Viewing angle -- unificationViewing angle -- unification Field of view and wavelength observed (affects whether we see disk vs. jet, Field of view and wavelength observed (affects whether we see disk vs. jet,

etc.)etc.) Inferring presence of black hole (measuring size, mass of central object)Inferring presence of black hole (measuring size, mass of central object) Constraints on what is producing lightConstraints on what is producing light

Shape -- not sphericalShape -- not spherical Processes -- can rule out fusion, radiation pressureProcesses -- can rule out fusion, radiation pressure

Tools:Tools: Many images (radio, X-ray, visible)Many images (radio, X-ray, visible) Spectra & SEDs of AGNS and “normal” galaxies for comparisonSpectra & SEDs of AGNS and “normal” galaxies for comparison

Shape of SED is power law, not blackbodyShape of SED is power law, not blackbody Broad lines in AGN spectrum --> mass estimate of central objectBroad lines in AGN spectrum --> mass estimate of central object Light curves --> size of central objectLight curves --> size of central object

Football stadium thinking toolFootball stadium thinking tool Calculating the mass of Mrk 335Calculating the mass of Mrk 335