Proposal #271

Good morning, TAC.

I'm requesting time on either the BSM Hamren or BSM NM telescopes for a research project on PMS/YSO stars in the constellation Ophiuchus.
The four targets you see below are requested for the following reasons.

1. V0852 OPH: monitor for potential flares and any interactions that may occur with the CPD during that time.
2. V0853 OPH: monitor for any interaction between the CPD and star without any flare present.
3: V2058 OPH: monitor for rapid variations, search for irregularly dense areas, attempt to determine the radius of the CPD.
4: V2062 OPH: monitor for rapid variations, search for irregularly dense areas, attempt to determine the radius of the CPD.

Our plan is to attempt to find any periodicity of any abnormally dense areas of protoplanetary discs, and follow up with radio telescope observations at PARI, as well as spectroscopy with personal telescopes throughout this timeframe.

Ideally, we would be able to measure the radius of the CPD's, and attempt to measure the size of any abnormally dense areas around the stars allowing us to better understand the formation of potential planets and possibly even the demise of CPD's after flare events.

Additionally, since these targets haven't been observed for a great while (many years, or some even never by an AAVSO member). having this new data would be valuable to add to our database and further flesh out the data we have on these interesting targets.

I am requesting that each star be observed every two days using B, V, and I filters and receiving 3 images per target per observing night around 12:00am local time.
V0852 would benefit from image stacking due to the minimum magnitude of 16, and an unknown current brightness.

All of the research compiled from the AAVSONET telescopes, PARI's 12m telescope, and amateur owned telescopes for spectroscopy, will be reviewed, and findings put into a research paper with the ultimate intent to publish in the JAAVSO.

Thank you for your time and consideration.

-Chris