Astronomy 490 Homework #11 Spring 2007
Due date: Monday, May 7 at start of class.
1. Read the Waller and Basri Sky & Telescope articles first—they provide valuable
background about the Spitzer Space Telescope (formerly known as “Space Infrared
Telescope”) and brown dwarfs, respectively. The Kaler article is optional, for anyone
who would like to learn a little more about the history behind spectral types of the
stars, and the new additions of “L” and “T” spectra types.
2. Read the Luhman ApJ article carefully. Note that the abstract has purposefully been
omitted from the hardcopy provided. If you need to download the paper from the
web, please avoid reading the abstract J
3. Write an abstract for the Luhman article. (Hint: remember that abstracts should
summarize the key findings of a paper, including quantitative results whenever
possible. For observational papers, the abstract should also state what telescope and
instrument was used and briefly describe the sort of data that were taken.)
4. In preparation for the final presentations, let’s collate everyone’s ideas about what
makes a good presentation, following our class discussion last week. Please email me
your thoughts about the following:
(i) elements of a good presentation
(ii) things to try to avoid / watch out for
(iii) your suggestion for the smallest font that should be used in powerpoint
I will collate these ideas and suggestions and put them on the class web page.