An exciting class of pulsating variables has recently been discovered: the gamma Dor variables. The slowly variable early F-type stars are on or near the cool border of the instability strip and the best explanation of the variability at this stage is nonradial g-mode pulsation. Some of the pioneering work has been discussed in previous issues of this newsletter. In the present newsletter, you can find an article by Kevin Krisciunas on these stars. I am presently working on a project/paper examining the astrophysical link between delta Scuti and gamma Dor variables: are they twins or cousins? The pun with the name of the original discoverer of the gamma Dor variability, Alan Cousins, is intended. You may have noticed a new subtitle to the newsletter: the gamma Dor variables are now also 'officially' a part.
A newsletter should actually be published every few months in order to provide timely information. For us this is not really possible, but the World Wide Web can bring us close to the goal. We are starting a news section on our internet server.
In fact, many newsletter publishers ask themselves the question whether or not they should change to electronic publishing. Our decision has been to use the advantages of both paper and electronic publishing. This means that you will continue to receive the paper copy of the newsletter. In addition, over the Internet you can:
We hope to make this Internet site an exciting and up-to-date place for you to be as part of your research on delta Scuti and related stars. You can also assist in these efforts by sending us the abstracts of your papers at the time they are submitted to a journal for publication.
To submit a news item (or an abstract of your latest paper, or an article for the next newsletter), you have several possibilities:
Please keep in mind that TEX or LATEX files are our preferred source for publication. In the future, such files will also be accessible from the electronic newsletter for downloading.
If you have special software which you want to share with the delta Scuti community, again do an anonymous FTP (see point 2) to dsn.ast.univie.ac.at Go to the directory /incoming/dsn/software and deposit your program. We will move it to the appropriate directory and publish a news item.
To see what public software is available, please use the anonymous FTP to dsn.ast.univie.ac.at and go to /pub/dsn.
In the future, the WWW Delta Scuti Star Newsletter will also include a page with more detailed documentation describing useful programs (such as PERIOD or PERDET) available for downloading.
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