Spectrum of the star HD 1069 (Courtesy of S. Howell, National Optical Astronomy Observatories)
Greetings to students in ASTR 4810/PHYS 5810 from the instructor, Nancy Morrison.
Latest update: 12/5/05 17:46
This page is intended to provide a backup copy of the images displayed in lecture, announcements relevant to the class, and access to the wealth of astronomical information on the World Wide Web.
The following books are on reserve at Carlson Library on 3-day loan.
Also recommended (for basic physics only) but not on reserve:
Aller, L. H.,
Astrophysics; the Atmospheres of the Sun and Stars
(New York, Ronald Press Co. )
- Fundamental Astronomy by Karttunen et al. Formerly used as a text in this course, this book is good for celestial coordinates, spherical trig, and related topics. Chapter 2 (sky, time, spherical trig.) is available electronically.
- Basic Physics of the Solar System by Blanco and McCuskey. Published in the 1960's, this book is badly dated in some respects, but it's good for celestial coordinates, time, and orbital mechanics.
Backup copies of documents (PDF unless otherwise noted)
Selected solutions to problems
Images, or links to images, shown in class are given below.
Monday, December 5:
Friday, December 2: slitless spectrum of nebula M57
Wednesday, November 30: Sun in white light (showing limb darkening, among other features)
Monday, November 28: energy distribution of the B9 star HD20899, from Jacoby, G. H., Hunter, D. A., and Christian, C. A. 1984, Astrophys. J. Supp. Ser., 56, 257, "A Library of Stellar Spectra" (right click to view full size)
Friday, November 18
- Plot of line strengths (actually atomic level populations) predicted by Saha & Boltzmann equations as a function of stellar spectral type or temperature. Similar to Fig. 8.9 (p. 240), so not posted here.
- H-R Diagram for stars with known parallaxes (to be posted)
- Effects of luminosity on the spectra of A2 stars:
Monday, November 14: image of Betelgeuse made with Hubble Space Telescope; see also published research paper
Wednesday, November 9: Second half of the sequence of stellar spectra, with strong spectral lines and spectral types labeled. To view full size, right click. Adapted from image by the National Optical Astronomy Observatories, original image here.
Monday, November 7: First half of the sequence of stellar spectra, with strong spectral lines and spectral types labeled. To view full size, right click. Adapted from image by the National Optical Astronomy Observatories, original image here.
Monday, October 31
Friday, October 28
Wednesday, October 26
Monday, October 24 - telescopes
Friday, October 21
Wednesday, October 12:
Spectrum of star, HD 12027, showing hydrogen Balmer series. This star is a bit unusual in that it has an emission line at Hα; all the other Balmer lines are in absorption, as is normal. (Spectrum courtesy of S. Howell, National Optical Astronomy Observatories)
Monday, October 10:
- Transmission curves of UBV filters (scroll down; graphic is just above middle of page)
- Spectral energy distribution of Sun-like star, HD 33278
- Spectral energy distribution of hotter star, HD 20899
- Spectrum of Sun-like star with Fraunhofer lines labeled
- Example of Doppler shift
Monday, October 3:
Wednesday, September 7:
Friday, September 2:
Wednesday, August 31:
Wednesday, August 24: