The X-ray view of the Hyades cluster: updated
S. Freund, J. Robrade, P.C. Schneider, J.H.M.M. Schmitt

TL;DR
This study analyzes the X-ray properties of Hyades cluster stars, examining their emission in relation to stellar rotation, and extends previous work by incorporating new membership data and deeper luminosity analysis.
Contribution
It provides an updated, comprehensive X-ray catalog of Hyades members, linking X-ray activity with rotation and refining the understanding of stellar activity in a coeval cluster.
Findings
281 of 1066 Hyades members detected in X-rays.
Detection rates are highest for F- and G-type stars at 72%.
X-ray luminosities range from ~$2×10^{27}$ to ~$2×10^{30}$ erg s$^{-1}$.
Abstract
We revisit the X-ray properties of the main-sequence Hyades members and the relation between X-ray emission and stellar rotation. As input catalog for Hyades members, we combined three recent membership lists derived from Gaia DR2 data including the Hyades core and its tidal tails. We searched for X-ray detections from the ROSAT all-sky survey (RASS) and pointings from ROSAT, Chandra, and XMM-Newton of the Hyades members and adopted rotation periods derived from Kepler's K2 mission and other resources. We find an X-ray detection for 281 of 1066 bona fide main-sequence Hyades members and provide statistical upper limits for the undetected sources. F- and G-type stars have the highest detection fraction (72 %), while K- and M-type dwarfs have lower detection rates (22 %). The X-ray luminosities of the detected members range from ~ for late M-type dwarfs to…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
