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Effects of dust on light-curves of ε Aur type stars (updated)

100728 Update: Dr. Budaj has offered a short description of the paper with a nice illustration, which can be read via the Citizen Sky forums.

The following is an abstract for a paper recently been posted to ArXiv (and accepted for publication in A&A Letters). The paper is based on your AAVSO observations of apsilon Aurigae and acknowledges AAVSO support.

Click here to read the paper.

AAVSO Newsletter 49 now online

AAVSO Newsletter 49, July 2011, is now online.

http://www.aavso.org/aavso-newsletter

Week of Online Chats for Beginners: July 25-29

We will be hosting three online chat sessions for beginners to the AAVSO during the week of July 25, 2011. Below are the list of the chat topics. However, feel free to bring up any topic at any chat.

The chat room can be accessed by pointing your browser here. Details about how to use dedicated chat clients are here.

Beginner Chat #1: Visual Observing
Monday, July 25 at 9pm eastern (-4UT)

Pro-Am White dwarf Monitoring (PAWM) Pilot Project

Bruce Gary has announced a one-month pilot project to evaluate the feasibility of observing exoplanet transits of white dwarfs. The advantage of looking at white dwarfs is that the eclipses will be deeper. The disadvantage is they will be very short (on the order of minutes). So there is considerable challenge here!

Click here for his web page describing the project.

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