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A Search for a Correlation Between Mass Segregation and Metallicity

A Search for a Correlation Between Mass Segregation and Metallicity. Nick DiPreta. Goals. To measure properties of star clusters To learn more about celestial analytic techniques To look for a correlation between metalicity and mass segregation in star clusters.

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A Search for a Correlation Between Mass Segregation and Metallicity

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  1. A Search for a Correlation Between Mass Segregation and Metallicity Nick DiPreta

  2. Goals • To measure properties of star clusters • To learn more about celestial analytic techniques • To look for a correlation between metalicity and mass segregation in star clusters http://www.dpreview.com/news/9910/99102101superccd.asp>. http://www.optcorp.com/product.aspx?pid=6316

  3. Star Clusters • Held together by gravity (Batinelli,1991) • All same age, composition, and distance from earth • 2 Types <http://outreach.atnf.csiro.au/education/senior/astrophysics/images/stellarevolution/pleiadesuks018c.jpg>.

  4. HR Diagram • observation and stellar evolution • From observations other facts can be derived. • <http://www.bramboroson.com/astro/images/hrdiagram.jpg>.

  5. Spectroscopy • Used to study properties of a star ex: metalicity • Spectroscope-makes graph of intensity http://www.astro.washington.edu/users/premap/images/project_images/solar_spectrum.jpg • http://loke.as.arizona.edu/~ckulesa/camp/spectroscopy_intro.html>. <http://www.sbig.com/dss7/dss7_25s.jpg>.

  6. Metalicity • “metals” besides hydrogen and helium are looked for • older star, several heavier elements Heavy element cluster http://apod.nasa.gov/apod/image/0711/pleiades_fs_big.jpg

  7. Photometry • Luminosity • CCD imager- longer exposures better images • filters • APT- image J http://teleskop-service.se/produkter/eng/atikpics/start/mit-rgb-2.jpg>. http://teleskop-service.se/produkter/eng/atikpics/start/mit-rgb-2.jpg>.

  8. Image Stacking • Spectrograph/CCD create image • Stacking images increases quality • Photoshop/MaxIm DL http://teleskop-service.se/produkter/eng/atikpics/start/mit-rgb-2.jpg>.

  9. Astroimaging/Preprocessing • Darks • Bias • Flats • Signal to noise ratio http://apod.nasa.gov/apod/image/0711

  10. Mass Segregation • Distributed by equipartition to a roughly equal kinetic state • Kinetic energy exchange by two members of a star cluster http://images.google.massssegregation

  11. Prim’s Algorithm • Allows us to calculate the MST or Minimum Spanning Tree Wikipedia.org/wiki/minimumspanningtree

  12. Using The Minimum Spanning Tree to Trace Mass Segregation In 2009, Richard J. Allsion found a way to quantify mass segregation .

  13. Literature Observations and Theory of Star Cluster Formation Bruce Elmegreen et Al. 2002 Mass segregation patterns were investigated. Claimed that more segregation occurred in areas with greater gravity.

  14. D. Raboud et Al., 1997 • Claims that other factors such as age and primordial protoplanetary disk composition may be directly responsible for mass segregation

  15. Candidate Clusters • Pleiades- M45 • Beehive Cluster- M44 • Perseus Double Cluster-NGC 869 884 • The Butterfly Cluster or M6 • M34 • M35 • M47 • M46 • Jewel Box Cluster- NGC 4755 • Ptolemy Cluster- M7

  16. Methodology Candidates Clusters Spectroscopy performed using Spectroscope Images obtained using CCD imager. Images processed and sharpened using MaxIm DL Trigonometry functions used to find distance between stars MST calculated using Prim algorithm Mass Segregation Formula by Richard J Allison Pearson function will be used to search for correlation between Metalicity and Mass Segregation

  17. Do-Ability • Materials are readily available • Computer • CCD imager • DSS7 spectrograph • Telescope

  18. Cost/Budget Equipment Cost Site/Supplier Http://www.sbig.com/sbwhtmls/online.htm CCD Imager $1895 http://www.cyanogen.com/maximdl_buy.php MaxIm DL $665 DSS7 1595 http://www.optcorp.com/product.aspx?pid=6316

  19. Bibliography • " Australia Telescope Outreach and Education., “Pleiades“, 15 May 2009 <http://outreach.atnf.csiro.au/education/senior/astrophysics/images/stellarevolution/pleiadesuks018c.jpg>. • Archinal, Brent A. Star clusters. Richmond, VA: Willmann-Bell, 2003. Pgs 3-6 • A Shot in the Dark: Astrophotography by Kirk M. Rogers. 15 May 2009 <http://www.kiroastro.com/images/perspective/earth2.jpg>. • Back off Man, I'm a Scientist: Personal Life of., "HR Diagram." 15 May 2009 <http://www.bramboroson.com/astro/images/hrdiagram.jpg>. • Battinelli P., Capuzzo-Dolcetta R. (1991), Formation and evolutionary properties of the Galactic open cluster system, Monthly Notices of the Royal Astronomical Society, v. 249, p. 76–83 • BIG Santa Barbara Instrument Group, DSS 7 Picture , 14 May 2009 <http://www.sbig.com/dss7/dss7_25s.jpg>. • The Chandra X-ray Observatory Center . "Stellar Evolution." . Gateway to the Universe of X-ray Astronomy! 15 May 2009 <http://chandra.harvard.edu/photo/2007/sn2006gy/sn2006gy_newline.jpg>. • Cowie, Lennox L., and ET AL. "New Insight on Galaxy Formation and Evolution From Keck Spectroscopy of the Hawaii Deep Fields." Astronomical Journal V.112 (1996): 839. ADS HARVARD. ABSTRACT SERVICE. • The Department of Astronomy & Astrophysics, "Globular Clusters.“ 15 May 2009 http://astro.uchicago.edu/~grodnick/gallery/iotw/m2.jpg • Digital Camera Reviews and News: Digital Photography Review: Forums, Glossary, "More on the Fuji "Super CCD": Digital Photography Review." 15 May 2009 http://www.dpreview.com/news/9910/99102101superccd.asp • Gilliand, Ronald L., and ET AL. "Time-resolved CCD photometry of an ensemble of stars in the open cluster M67." Astronomical Journal (1991): 541-61. • Hamilton, Calvin J. "The Solar System." Views of the Solar System. May 1995. 08 May 2009 <http://www.solarviews.com/eng/solarsys.htm>. • Helios Home Page., Helios Nebula, 15 May 2009 <http://helios.augustana.edu/astronomy/mel-peterson/horse-1520.jpg>. • Hester, Jeff, David Burstein, George Blumenthal, Ronald Greeley, Bradford Smith, Howard Voss, and Gary Wegner. 21st Century Astronomy, Second Edition. New York: W. W. Norton, 2006. • Ipac, Spitzer , Milky Way photograph,. "Milky Way Galaxy." IPAC. 15 May 2009 <http://ipac.jpl.nasa.gov/media_images/sig05-010.jpg>. • Kent, Montegomery A. "CCD photometry of the old open cluster M67." Astronomical Journal (1993): 181-219. 4 May 2009 http://http://adsabs.harvard.edu/abs/1993AJ....106..181M. • Kulesa, Craig. "What is Spectroscopy?" 15 May 2009 <http://loke.as.arizona.edu/~ckulesa/camp/spectroscopy_intro.html>. • Made-in-China.com China manufacturer directory, China products, China suppliers, China trade, China factory, “CCD IMAGER." . 15 May 2009 • MAP SHARING - Share your map - All maps of the world., Map of the Solar System, 15 May 2009 <http://www.mapsharing.org/MS-maps/map-pages-space-map/images-solar-system/6-solar-system-map.jpg>. • Martinez, P., and Klotz, A., 1997, A Practical Guide to CCD Astronomy, Cambridge University Press. • Max-Planck-InstitutfürRadioastronomie, Bonn - Max-Planck-InstitutfürRadioastronomie, "AGN." 15 May 2009 http://www.mpifr-bonn.mpg.de/div/vlbi/ckp08/images/AGN/agn04.jpg • Seeds, Michael A. Foundations of astronomy. Belmont, CA: Thomson Brooks/Cole, 2005. • Taplur, Jon. "A Guide to GLOBULAR CLUSTERS." Keele University Astrophysics Group. July 1997. Keele University. 08 May 2009 • Teleskop-Service Din guide till universum - 0301-429 72, "Filters." 15 May 2009 <http://teleskop-service.se/produkter/eng/atikpics/start/mit-rgb-2.jpg>. • Van den bherg, Sydney. "Photometric and Spectroscopic Observations of Globular Clusters in the Andromeda Nebula." Astrophysical Journal Supplement 19 (1969): 145 • Welcome to Grays Harbor College, Milky Way, 15 May 2009 <http://ghc.ctc.edu/catalog/images/astronomy.jpg> • , Zephyr, Cats Eye Nebula , May 13 2009, http://www.aero.iitb.ac.in/home/zephyr/images/workshops/astronomy%20picture%20of%20the%20day-2004.03.05.jpg • http://www.optcorp.com/product.aspx?pid=6316 • http://www.cyanogen.com/maximdl_buy.phpHttp://www.sbig.com/sbwhtmls/online.htm

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