K2 view on open clusters: removing systematic biases from the Pleiades catalog
Abstract
The repurposed Kepler mission, K2, revolutionized our knowledge of planets in young clusters and star-forming regions. Increasing the scientific utility of K2 requires accurate cluster memberships and binary frequencies. This allows statistical studies of planet occurrence estimates across clusters of different ages, providing insights into the evolution of planetary systems. We present a radial velocity survey of over 200 K and M dwarfs in the Pleiades open cluster with the primary goal of producing a well-constrained membership list and determining the binary frequency. We use the Hydra instrument at the WIYN 3.5m Telescope to obtain spectra of our targets, all previously observed by K2. We report the mean cluster velocity and calculate membership probabilities for non-velocity variables with at least 3 epochs of radial velocity measurements. We calculate a preliminary binary frequency by identifying single- and double-lined spectroscopic binary candidates. Future work involves expanding our sample and monitoring velocity variables in order to calculate their orbital solutions.
- Publication:
-
American Astronomical Society Meeting Abstracts #235
- Pub Date:
- January 2020
- Bibcode:
- 2020AAS...23520404N