Astronomy 12 Links

General Links

Textbook site
Los of background material for our class textbook
An excellent hypertext astronomy textbook
Many free online astronomy texts.
Gateway to all sorts of astronomical images and resources
Science Section of "Imagine the Universe". Mostly high energy astrophysics
Astronomy Picture of the Day

Astronomy on the WWW - magazines, organizations, etc.

Links to magazines and organizations
Master link to links. Retired 2010.

Introduction - Distance and Scale
Surveying space around the sun.
Kinds of Stars (will be discussed more later)
Uranium Lead dating of earth's age
Birth and long term evolution of the universe

Celestial Motions
Official sunrise-sunset information
Path of sun in the sky - type in California, Santa Cruz and give day
The 50 brightest stars
Local Siderial time
The Constellations and Their Stars
(Graduate student Chris Dolan has assembled handy information about all the constellations, and the most important stars, nebulae, clusters, and galaxies that can be found in them. You can access things by name or by month of visibility, and there are good links to related sites for constellation fans.)
What is happening in the sky this month
Astronomical coordinate systems
Sunrise, sunset, eclipses, Easter, path of sun in the sky, equinoxes, perihelion, moon phases, etc

Forces and Kepler's Laws AND
The four forces and particle physics
The axion and dark matter
Animation illustrating Kepler's Laws
Kepler's Laws and links to information on Ptolemy's models

Terrestrial Impacts
Terrestrial Impact Craters
Chicxulub Crater
Tunguska Meteorite
Torino hazard scale
General information on asteroids and impacts

Distance Determinations and Cosmology
Parallax animation
Summary of many distance determining techniques
Proper motion over 100 years
Cosmology and the CMBR
General cosmology frequently asked questions
Olber's paradox
Hipparcos Website
Lawrence Berkeley Labs supernova team site (distances and cosmology info)
A nice supernova movie on the Lawerence Berkeley Labs website
Elementary movie about distance determination
How to determine the age of the earth and solar system using raioactive dating

This multi-wavelength "virtual observatory" allows you to dial up any part of the sky and ask to see what it looks like in various bands of the electro-magnetic spectrum.
See especially the sections on "What is temperature?" and "Thermal Radiation" (aka blackbody radiation)
lets you see blackbody curves for different temperatures
Pictures of the sun - daily - in the uv, x-ray etc
Multiwavelength pictures of the Milky Way Galaxy
Observatories at all wavelengths

Spectral Classification of Stars
Brief tutorial on the spectral classification system
See "line radiation"
This is a little advanced - the lines are not labelled
Atlas of stellar spectra but only for G and cooler (no OBAF stars).

Binary Stars and Mass Determination
The brightest double stars.
History of discovery of double stars.
Pictures of binary stars.
The double star library (DSL).
Visual Binary Orbit information
Watch the movie of the light curve of an eclipsing spectroscopic binary

History of the search for extrasolar planets.
Pulsar planets
Extra-solar planets
Planetary Missions, Data and Information
Artistic renderings of extra-solaor planets - not to be confused with actual observations

Star Formation
The local interstellar medium. Nice graphics reconstructed (artistically) from data.
Pretty pictures of star birth taken with HST>
Pretty pictures of star forming nebulae taken at the Anglo-Australian Observatory. See especially "Dark nebulae", "Reflection nebulae" and "Emission nebulae". May be slow to load.
More pictures of nebulae from the European Southern Observatory Click e.g., on "VLT", then on "nebulae">
And from the National Optical Observatories in North America
Rather technical site dealing with star formation

The Sun
National Solar Observatory Solar Adaptive Optics Project
Implications of the solar neutrino experiments. (A good site but pretty technical.)
Note especially links to home pages for numerous experiments GALLEX , MPI-Heidelberg GALLEX; BOREXINO ; Gran Sasso ; SAGE, Baksan; SNO ; Superkamiokande, US Super-K, Kamioka mine, Irvine Super-K; Kamiokande; Karmen.
Popular articles and talks on solar neutrinos are given by John Bahcall
The active sun - sunspots, flares, etc
Current pictures of the sun at all wavelengths
Primers on various aspects of the sun

Post-Main Sequence Evolution
HST images of planetary nebulae and descriptions of what they are by Bruce Balick of the University of Washington
Overview of all kinds of stars and star death

Massive Stars and Supernovae
Master link to supernovae and supernova remnants
mpeg movies of the presupernova eveolution and explosion mechanism
More supernova models
Mr Galaxy's supernova site
List of recent supernova with links to IAU circulars
Goddard supernova pages - a few movies
Lots of discovery images of novae and supernovae
A complete list of all supernovae discovered so far
Supernova spectra (technical)

Neutron Stars and Pulsars
An advanced tutorial on pulsars
Animations and video - supernovae and pulsars
Movie of an x-ray pulsar
X-Ray astronomy field guide to supernovae

Novae, Type Ia supernovae, X-ray binaries
x-ray bursts, novae, and Type Ia supernovae
x-ray binaries
More x-ray binaries
Searching for black holes

Gamma Ray Bursts
Information on bursts with couterparts Links to all sorts of gamma-ray burst sites
GRB skymap - updated every month, also light curves of the most recent bursts
Orbiting and future GRB satellites
More observational data than you ever wanted about GRBs (the equivalent to the IAU Circ)
Models for gamma-ray bursts
Launch delay of HETE-2