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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.

Delta Scorpii: el nacimiento de una estrella Be

This is also available in English

Las estrellas Be

El estadio Be no es sólo una etapa evolutiva en las vidas de algunas estrellas calientes de tipo B de rápida rotación sino también un fenómeno transitorio que puede ir y venir con el paso de los años en la misma estrella.  Varias razones se han propuesto para explicar el comportamiento de estas estrellas y aun están en debate.

Delta Scorpii: the birth of a Be star

También disponible en español

The Be stars

Be-ness is not only an evolutionary stage in the lives of some rapidly rotating hot B-type stars but also a transient phenomenon that may come and go over the years for the same star.  Several reasons have been proposed to explain the behavior of these stars and are still in debate.

Variable Star iPhone App Now Free

The Variables Stars and AstroClock iPhone apps are now available for free. Thanks, Diatom software!

Arne Henden Receives Leslier C. Peltier Award

Arne Henden received the Leslier C. Peltier Award from the Astronomical League last weekend at their annual meeting in Utah. Click here for Sky & Telescope's coverage of the meeting.

Arne joins fellow AAVSO staffer Elizabeth Waagen and current member/observer Gerry Samolyk as past winners.

Special Notice #244: Continued close monitoring of T Pyx requested

Continued close monitoring of T Pyx requested

June 30, 2011: Since its outburst on 2011 April 14 (see AAVSO Alert Notice 436), the recurrent nova T Pyx has been very well monitored by visual and instrumental observers who can reach -32o. Thank you! Currently T Pyx is visual/V magnitude ~8.3.

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