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PH1600: Introductory AstronomyLecture 15: Star Clusters
PH1600: Introductory AstronomyLecture 15: Star Clusters
Next Lecture: Star Death & Black Holes
School: Michigan Technological University
Professor: Robert Nemiroff
Online Course WebCT pages:
http://courses.mtu.edu/
This class can be taken online ONLY, class attendance is not required!
You are responsible for… Lecture material
Listed wikipedia entries But not higher math
APODs posted during the semester APOD review every week during lecture
Completing the Quizzes Homework quizzes 1 - 7, Midterm already due Homework 8 released later (Wednesday) See WebCT at http://courses.mtu.edu/
5
Cepheid variable stars
Longer periods means greater absolute brightness
See link: http://www.youtube.com/watch?v=NNPAlAZ_iKY
5
Andromeda Nebula: Var!Credit: Mount Wilson Observatory Historical ArchiveAPOD: 1996 April 6
The Cepheids of M100Credit: NASA, HST, W. Freedman (CIW), R. Kennicutt (U. Arizona), J. Mould (ANU)
APOD: 1996 January 10
Open Clusters
Young < 1 billion years Light dominated by biggest blue stars
10 – 1,000 stars Found in Galactic Plane All stars born at the same time
All stars at the same distance
M45: The Pleiades Star ClusterCredit & Copyright: Robert GendlerAPOD: 2006 January 9
Perseid Fireball Over JapanCredit & Copyright: Katsuhiro Mouri & Shuji Kobayashi (Nagoya City Science Museum / Planetarium)APOD: 2004 August 13
Open Cluster NGC 290: A Stellar Jewel BoxCredit: ESA & NASA; Acknowledgement: E. Olszewski (U. Arizona) HSTAPOD: 2008 August 3
The M7 Open Star Cluster in ScorpiusCredit & Copyright: Allan Cook & Adam Block, NOAO, AURA, NSF APOD: 2005 April 6
In the Center of the TrapeziumCredit: J. Bally, D. Devine, & R. Sutherland, D. Johnson (CITA), HST, NASA APOD: 2005 July 10
Star Clusters Young and OldCredit & Copyright: Chris Hetlage APOD: 2006 September 10
Open Star Clusters M35 and NGC 2158Credit & Copyright: Canada-France-Hawaii Telescope, J.-C. Cuillandre (CFHT), Coelum APOD: 2003 December 15
A Star Cluster in MotionCredit: Adam Block (NOAO)APOD: 2002 July 30
The Rosette Nebula in Hydrogen, Oxygen, and SulfurCredit: T. A. Rector, B. Wolpa, M. Hanna (AURA/NOAO/NSF)APOD: 2000 January 11
Inside the Eagle NebulaCredit & Copyright: T. A. Rector & B. A. Wolpa, NOAO, AURA
APOD: 2006 February 26
Globular Clusters
Oldest things known in the universe 10,000 – 1 million stars All born at the same time
All have the same distance All are relatively dim
Not confined to our Galactic Plane Blue stragglers once a mystery
The Colorful Clouds of Rho OphiuchiCredit: Adam Block, KPNO Visitor Program,
NOAO, AURA, NSF APOD: 2007 September 3
Globular Cluster M3 from WIYNCredit & Copyright: S. Kafka & K. Honeycutt (Indiana University), WIYN, NOAO, NSF APOD: 2006 March 12
M3: Inconstant Star ClusterCredit & Copyright: J. Hartman & K. Stanek (Harvard CfA)APOD: 2004 October 12
M13: The Great Globular Cluster in HerculesCredit & Copyright: Eddie Guscott APOD: 2004 May 11
Blue Stragglers in NGC 6397Credit: Hubble Heritage Team (STScI / AURA), A. Cool (SFSU) et al., NASA APOD: 2003 August 8
NGC 1818: A Young Globular ClusterCredit: Diedre Hunter (Lowell Obs.) et al., HST, NASA APOD: 2002 December 29
M55: Color Magnitude DiagramB.J. Mochejska, J. Kaluzny (CAMK), 1m Swope Telescope APOD: 2001 February 23
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