Monitoring of EPIC 204278916
Active Dates: April 25, 2017 – April 25, 2017
Abstract:
Dr. Carlo Manara and colleagues have requested AAVSO assistance in monitoring the young, disk-bearing low-mass (M type) pre-main-sequence star EPIC 204278916 (2MASS J16020757-2257467).
Justification:
Dr. Manara reports that this star showed a very interesting dimming event in August-September 2014 which may be caused by transiting material (exo-comets like). It would be very useful to know whether this event has any periodicity in order to constrain the possible scenario. The major dimming we see is ~1.2 mag in V, others are ~0.5-0.8 mag in V. The dimming event lasted for some ~25 days, although the most extreme event was ~1 day long. Based on the noisy WASP data we have, there are some suggestions that the event happens every ~100 days, but we are not sure about it.
Requested Data Types:
Photometry
Targets
| Name | Magnitude | Variability Type | Photometry Notes | Spectroscopy Notes |
|---|---|---|---|---|
| EPIC 204278916 | 14.80 | TTS/ROT/DIP |
Cadence: Not Specified Precision: 100 |
Not Requested |
Spectroscopy Lines:
No spectroscopy lines provided
Photometry Filters:
No photometry filters provided
Comparison Stars:
No comparison stars provided
Co-Authorship
Observers are not eligible for co-authorship.
Additional Observer Input:
Not provided
Additional Submission Location:
Not provided
Forum URL
N/A
Notes:
Principal Investigator: Dr. Carlo Manara (ESA Science and Technology SCI-S, the Netherlands); Imported Campaign (Alert Notice #574)