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Дата индексирования: Sun Apr 10 05:31:00 2016
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Student Research at Manastash Ridge Observatory

Student Research at Manastash Ridge Observatory

ORBITAL PERIOD OF THE SLOAN DIGITAL SKY SURVEY CATACLYSMIC VARIABLE SDSS J170053+400358

HILDA TAYLOR, PAULA SZKODY and LEE HOMER

Follow-up observations with the University of Washington 0.76 m telescope at Manastash Ridge Observatory (MRO) of the Sloan Digital Sky Survey (SDSS) cataclysmic variable (CV) SDSS J170053+400358 are presented. Light curves were produced using a sine curve fitting program in Mathematica in order to determine the orbital period of this binary system. Photometric observations provided key information about the nature of this system. Light curves were produced from hundreds of images taken during two nights of observations in order to determine the period of this binary star system.

Karen Kennel and Sam Skinner

Another undergraduate student and I worked with Dr. Julie Lutz this past summer on a research project at MRO. Every two weeks for six weeks we took obserations of five different central stars of planetary nebulae in hopes of finding a variation in magnitude over that time. If we find that some of the stars are variable, that could indicate that the star has a long range binary companion. The motion of the binary may be a factor in determining the shape of the planetary nebula that occurs when one of the stars reaches the end of its life. We have not currently finished the data reductions and analysis, so we have not come to any conclusions. MRO was able to do a couple things for our project. Firstly, it was able to give us good preliminary data. If we find that some of our stars are variable, we may want to go back to MRO and do some more observations. Secondly, as undergraduate students, my partner and I were privileged to do real science. I think that is a rare opportunity, since most universities don't have telescopes available for undergraduates to use.

HD 209458 - IAU Circular, 7317, 2 (1999)

G. Gonzalez, University of Washington, writes that he obtained differential CCD photometry of HD 209458 during Nov. 22.07-22.35 UT, using the the Manastash Ridge Observatory 0.76-m telescope, with C. Laws and M. Braunstein. An 8-nm-side filter centered at 673 nm was used to obtain images every about 3 min. They detect a dimming of HD 209458 starting at Nov. 22.28 +/- 0.015 day, but they did not observe long enough to see last contact, due to the low altitude of the star. They estimate that the dimming amounted to about 0.028 mag (using two comparison stars that were each about 4 mag fainter than HD 209458).

Publications using MRO data

only UW affiliated authors have been listed, student researchers are marked with an ``*''