Arecibo Observatory

UAT 2015 Workshop Planning Telecon 2

During the January 2015 UAT workshop, we will be conducting observations under Arecibo program A2941. We will be using the L-Band Wide (LBW) Receiver at Arecibo.

Read the proposal and then consider the following questions based on it. In many cases, you can find reasonable (although not scholarly!) answers on Wikipedia.
  1. What is the ΛCMD cosmology?

  2. What is a baryon? What do we mean by baryon fraction? What do we mean by the baryon-to-dark matter fraction?

  3. What is meant by a "halo"?

  4. What is the Malmquist bias?

  5. The left panel of Figure 1 in the proposal shows a color-magnitude diagram. Its vertical axis is labeled (g-i). What do g and i refer to? What do we mean by (g-i) and what is that called in astronomy-speak?

  6. What is a scaling relation? Give an example of one that has been derived for ALFALFA galaxies; be sure to include a proper citation from where you derive your answer to this question.

  7. What is a bursty star formation history?

  8. Some galaxies are included in the SDSS photometric survey but not in the SDSS spectroscopic survey. Why not?

  9. What is the frequency range covered by the L-Band Wide detector? What wavelengths does this correspond to? Assuming that you were observing the 21-cm line, what range of velocities and redshifts does this correspond to?
  10. What is meant by ON-OFF position switching? Why is this a useful technique?
Ok, now that you have answered a few questions, read through the proposal and find your own questions. Add them to the google document and hopefully someone will answer them for you.

Answers will be discussed in the Second Workshop Planning Telecon

Last modified: Sun Nov 23 19:20:32 EST 2014 by becky