open star cluster m11 rosalina bonilla jennifer hsieh mary lou juanatas cluster 7: stars, sight, and...
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OPEN STAR OPEN STAR CLUSTER M11CLUSTER M11
Rosalina BonillaRosalina Bonilla
Jennifer HsiehJennifer Hsieh
Mary Lou JuanatasMary Lou JuanatasCluster 7: Stars, Sight, and Cluster 7: Stars, Sight, and
Science Science
OUTLINEOUTLINE
Background of Star ClustersBackground of Star Clusters Description of projectDescription of project Messier 11Messier 11 Ideal Gas LawIdeal Gas Law Star FormationStar Formation Stellar EvolutionStellar Evolution Observation & data collection of M11Observation & data collection of M11 Data analysisData analysis Results & conclusionsResults & conclusions
What are open star What are open star clusters?clusters?
Group of stars born Group of stars born at the same timeat the same time
Cluster contains Cluster contains Hot Young starsHot Young stars
Found in the disk of Found in the disk of spiral galaxiesspiral galaxies
Metallicity – how much heavy elements are in the object
Open cluster have lots of metals
MAIN OBJECTIVESMAIN OBJECTIVES
How old is M11? How old is M11? How do we know?How do we know?Why does it matter?Why does it matter?
Fun Facts about M11Fun Facts about M11
Nick Name: The Wild Duck ClusterNick Name: The Wild Duck Cluster One of the richest and most One of the richest and most
compact of open clustercompact of open cluster Discovered in 1681 by Gottfriend Discovered in 1681 by Gottfriend
KirchKirch 3000 stars3000 stars
Ideal Gas LawIdeal Gas Law
P= pressureP= pressure V= volumeV= volume n= number of particlesn= number of particles T= temperatureT= temperature R= gas constantR= gas constant P V= n RTP V= n RT
Star FormationStar Formation Protostar – dust Protostar – dust
and gas collapses and gas collapses under gravityunder gravity
Pressure balances Pressure balances the forces of the forces of gravitygravity
Molecules in the Molecules in the protostar radiate protostar radiate allowing it to shrinkallowing it to shrink
Stellar Structure/EvolutionStellar Structure/Evolution Main sequence – Main sequence –
hydrogen fuses into hydrogen fuses into helium in the corehelium in the core
Red giants swell up, Red giants swell up, causing the outer causing the outer layers to cool which layers to cool which makes them redmakes them red
This happens when This happens when the core runs out of the core runs out of hydrogenhydrogen
OBSERVATIONOBSERVATION
DATA ANALYSISDATA ANALYSIS
CONCLUSIONCONCLUSION
M11 is 90 million years old with an M11 is 90 million years old with an ± of of 10 million years10 million years
Using the isoplot program we estimated Using the isoplot program we estimated the age of our M11the age of our M11
Open star clusters help us determine Open star clusters help us determine the metallicity of our universethe metallicity of our universe
The metalllicity of the universe is The metalllicity of the universe is important because we’re made of important because we’re made of metalsmetals
ACKNOWLEDGEMENTACKNOWLEDGEMENTSS
AdvisorsAdvisors Jason MelbourneJason Melbourne Nick KonidarisNick Konidaris
Vision ScienceVision Science Gabriel, Gene, Jason P., Jim, Joy, & MaribellGabriel, Gene, Jason P., Jim, Joy, & Maribell
AstronomyAstronomy David, Elinor, Jason, Lynne, Marla, Nick, David, Elinor, Jason, Lynne, Marla, Nick,
Scott Sea., Scott Sev.Scott Sea., Scott Sev. Teacher Fellow / Sci. Comm.Teacher Fellow / Sci. Comm.
Gary / PaschaGary / Pascha
REFERENCESREFERENCES WWW.ANTWRP.GFSC.NASA.GOVWWW.ANTWRP.GFSC.NASA.GOV Http://antwrp.gsfc.nasa.gov/apod/astropHttp://antwrp.gsfc.nasa.gov/apod/astrop
ix.htmlix.html (Astronomy Pic. of the Day) (Astronomy Pic. of the Day)
Http://mthamilton.ucolick.org/Http://mthamilton.ucolick.org/ (Lick (Lick observatory)observatory)
www.tcho.la.asu.edu/www.tcho.la.asu.edu/ www.soral.as.arizona.edu/www.soral.as.arizona.edu/ www.ctio.noao.edu/www.ctio.noao.edu/ www.star.le.ac.uk/www.star.le.ac.uk/ www.physics.nwu.edu/www.physics.nwu.edu/
QUESTIONS?????QUESTIONS?????