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Galaxy Bulges and Elliptical Galaxies (PDF 16P)
Our knowledge on the central components of disk galaxies has grown substantially in the past few decades, particularly so in the last. This frantic activity and the complexity of the subject promote confusion in the community. In these notes the author discuss the concept of galactic bulge and its different flavors. This also address fundamental scaling relations and the bulge-elliptical galaxy connection, their central black holes and formation models. In particular, this book aims at conveying three important notions: box peanuts are just the inner parts of bars; the physical reality of two different families of bulges is evident and at the high mass end, at least, classical bulges are not just scaled down ellipticals surrounded by disks.
Author(s): Dimitri A. Gadotti
16 Pages 
Lectures on the History of Astronomy
This note describes the following topics: Astronomy History and science, Ancient Mesopotamian Astronomy, Greek Astronomy, Islamic Astronomy, The Copernican Revolution, The Universe of the 20th Century.
Author(s): David J Jeffery
124 Pages
Introduction to Astronomy Lectures
This book covers the following topics: Orbits and Light, Spectroscopy, Telescopes, Solar System, Planetary System Formation, The Sun, Properties of Stars, Interstellar Medium, Star Formation, Stellar Evolution.
Author(s): John Scalo
NA Pages
An Introduction to Astronomy by Helen Johnston
This astronomy note introduces you to the wonders of modern astronomy.From the Solar System to the most distant galaxies, we undertake an eye-opening journey, from how stars work to the structure of the universe itself.
Author(s): Helen Johnston
NA Pages
Modern Astronomy Lives of the Stars
This note demonstrate the extraordinary images flowing from the Hubble Space Telescope, this series builds a picture of each stage in the life cycle of a star. An evening of star viewing in the Blue Mountains is included.
Author(s): Helen Johnston
NA Pages