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

Star Clusters Held together by gravity (Batinelli,1991) All same age, composition, and distance from earth 2 Types.

HR Diagram observation and stellar evolution From observations other facts can be derived..

Spectroscopy Used to study properties of a star ex: metalicity Spectroscope-makes graph of intensity. ages/project_images/solar_spectrum.jpg

Metalicity “metals” besides hydrogen and helium are looked for fusion creates new metals More Fusion more metals Heavy element cluster e/0711/pleiades_fs_big.jpg

Photometry Luminosity CCD imager- longer exposures better images filters APT- image J

Image Stacking Spectrograph/CCD create image Stacking images increases quality Photoshop/MaxIm DL

Astroimaging/Preprocessing Darks Bias Flats Signal to noise ratio

Mass Segregation Distributed by equipartition to a roughly equal kinetic state Kinetic energy exchange by two members of a star cluster

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

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

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

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

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

Methodology Candidates Clusters Images obtained using CCD imager. Images processed and sharpened using MaxIm DL 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 Spectroscopy survey obtained using NVO database Trigonometry functions used to find distance between stars

Do-Ability Materials are readily available – Computer – CCD imager – DSS7 spectrograph – Telescope

Cost/Budget Equipment Cost CCD Imager MaxIm DL $1895 $ Site/Supplier ?pid=6316 DSS7

Bibliography " Australia Telescope Outreach and Education., “Pleiades“, 15 May Archinal, Brent A. Star clusters. Richmond, VA: Willmann-Bell, Pgs 3-6 A Shot in the Dark: Astrophotography by Kirk M. Rogers. 15 May Back off Man, I'm a Scientist: Personal Life of., "HR Diagram." 15 May 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 The Chandra X-ray Observatory Center. "Stellar Evolution.". Gateway to the Universe of X-ray Astronomy! 15 May 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 Digital Camera Reviews and News: Digital Photography Review: Forums, Glossary, "More on the Fuji "Super CCD": Digital Photography Review." 15 May Gilliand, Ronald L., and ET AL. "Time-resolved CCD photometry of an ensemble of stars in the open cluster M67." Astronomical Journal (1991): Hamilton, Calvin J. "The Solar System." Views of the Solar System. May May Helios Home Page., Helios Nebula, 15 May 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, Ipac, Spitzer, Milky Way photograph,. "Milky Way Galaxy." IPAC. 15 May Kent, Montegomery A. "CCD photometry of the old open cluster M67." Astronomical Journal (1993): May Kulesa, Craig. "What is Spectroscopy?" 15 May 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 Martinez, P., and Klotz, A., 1997, A Practical Guide to CCD Astronomy, Cambridge University Press. Max-Planck-Institut für Radioastronomie, Bonn - Max-Planck-Institut für Radioastronomie, "AGN." 15 May Seeds, Michael A. Foundations of astronomy. Belmont, CA: Thomson Brooks/Cole, Taplur, Jon. "A Guide to GLOBULAR CLUSTERS." Keele University Astrophysics Group. July Keele University. 08 May 2009 Teleskop-Service Din guide till universum , "Filters." 15 May 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, Zephyr, Cats Eye Nebula, May ,