Proposal #166

I am currently doing further research on WW Vul (https://www.aavso.org/vsx/index.php?view=detail.top&oid=38220). This is a star that has been studied for over a century, and conclusive period(s) have not been able to be established. I am currently comparing AAVSO photometry charting back to the late 1990's with other light curves from ASAS and other studies on WW Vul that gave suggested periods or semi-periods (as a YSO, it is not uncommon to have either no regular period, or difficult to determine periods). In addition to my seeking to develop or confirm a period or quasi-period, I am also researching the possibility of stellar pulsation in this particular YSO.

Some of the research on this star indicates that the star may pulse at a low frequency at a rate of 5d to the negative 1 power (.2 days). I would like to attempt to detect (or not detect) these low frequency pulsations. I am proposing a 1 night observation with frequencies of imaging every 1 or 2 hours (should only need 180 - 300 second exposure each time as WW Vul is a bright star). If possible, these images should be taken in V, B, and I bands each time.

If possible, I'd like to then like to run for another set of images on a subsequent night (within a week or two) to confirm or refute findings of low frequency pulsations.