University of Mississippi

ASTR 101


Monday, Sept. 23, 2013

red bullet Reminder: Test 1 this Friday; Review on Wednesday.
red bullet Today's Topics: Top Hat Q; Finish Chapter 5:

Spectroscopy (lecture notes)
blue bullet Absolute temperature.
blue bullet Kinds of spectra and information we get from light sources:
Emission line spectra [composition].
Continuous spectra [temperature, emitted by all objects].
Absorption spectra [composition, temperature].
blue bullet The Doppler effect [radial velocity].

And what kinds of radiation do we get from space here on Earth?

red bullet Study aid: Today's class summary.

Spaceweather; APOD; Heavens-Above; Clear Sky Clock; PhysOrg Astronomy News; The Sky at a Glance

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