a quick primer for astronomical distances
DESCRIPTION
A quick Primer for Astronomical Distances. http://www.telescope.org/nuffield_21_sci/astrounits.htm http://janus.astro.umd.edu/astro/distance/ http://heasarc.nasa.gov/docs/cosmic/earth.html. Star Clusters, Galaxies, & Black Holes. Life and Death in a Community of Stars. - PowerPoint PPT PresentationTRANSCRIPT
A quick Primer for Astronomical Distances
• http://www.telescope.org/nuffield_21_sci/astrounits.htm
• http://janus.astro.umd.edu/astro/distance/• http://heasarc.nasa.gov/docs/cosmic/
earth.html
Star Clusters, Galaxies, & Black Holes
Life and Death in a Community of Stars
Stars do not occur in space at completely arbitrary places. Some, such as the Sun, are single (field star), but others are members of pairs or form multiple-star systems. Still others form clusters of various types, and size. All of them are condensed from clouds of gas and dust.
Star Clusters
Open ClusterContain young stars Often with nebulous gases Example: Pleiades in Taurus
Globular ClusterContain old starsTight mass due to stars being
drawn by each others’ gravity.
Example: M13 in Hercules
M45 – The Pleiades
M13 – the Hercules Cluster
The Milky Way – inside view
Milky Way – Outside View
Where we are…
Milky Way Q & A
http://www.universetoday.com/21563/milky-way/
Sgr A – our very own Black Hole!
Other Galaxies to look for: M31
Other Galaxies to look for: M81 & M82
For more info…
http://www.enchantedlearning.com/subjects/astronomy/stars/constellations.shtml