SkyTools 3 Power Tips Tips for using SkyTools 3. Basics Right-click on everything! Use context whenever possible (example: logs) Keep the planner windowed.
Protostars are difficult to observe because A. the protostar stage is very short. B. they are surrounded by cocoons of gas and dust. C. they radiate mainly.
Introduction to Astrophysics Lecture 12: Nebulae The hourglass nebula.
Nebulae, quasars,
The Beauty of the Universe
NOTES: Cepheid Variable Stars: John Goodrick (1784) discovered Delta-Cephei. Henrietta Leavitt (1908)--Period Luminosity Relation: (overlay). Stars varying.
The Interstellar Medium and Star Formation Material between the stars – gas and dust.
What's in our galaxy?. Emission Nebulae Spectra consist of emission lines Are hot, ionised hydrogen plasma (plus a few other elements) where stars are.
Star Stuff Joy Harjo (1951 – ) from Secrets From the Center of the World I can hear the sizzle of newborn stars, and know anything of meaning, of the fierce.
Observing Star-Formation From the Interstellar Medium to Star-Forming Cores On-Line Version, 1999 Alyssa A. Goodman Harvard University Department of Astronomy.
Earlier in the course, I told you stellar spectra are black bodies Why are there all these features?
Nebulas are made up of gas left behind by stars forming or exploding There are different classes of Nebulas The classes are: Reflection Nebulae, Emission.