The Stellar Populations of Praesepe and Coma Berenices
Adam L. Kraus, Lynne A. Hillenbrand

TL;DR
This study combines multiple survey data to identify and analyze stellar members of Praesepe and Coma Berenices clusters, revealing mass segregation in Praesepe and insights into their mass functions and tidal stripping effects.
Contribution
It provides the first comprehensive membership catalog for both clusters using archival data and investigates their mass functions and dynamical evolution.
Findings
Praesepe shows clear mass segregation across all stellar masses.
The mass function of Praesepe aligns with the field star mass function.
Coma Berenices has a shallower mass function with less evidence of mass segregation.
Abstract
We present the results of a stellar membership survey of the nearby open clusters Praesepe and Coma Berenices. We have combined archival survey data from the SDSS, 2MASS, USNOB1.0, and UCAC-2.0 surveys to compile proper motions and photometry for ~5 million sources over 300 deg^2. Of these sources, 1010 stars in Praesepe and 98 stars in Coma Ber are identified as candidate members with probability >80%; 442 and 61 are identified as high-probability candidates for the first time. We estimate that this survey is >90% complete across a wide range of spectral types (F0 to M5 in Praesepe, F5 to M6 in Coma Ber). We have also investigated the stellar mass dependence of each cluster's mass and radius in order to quantify the role of mass segregation and tidal stripping in shaping the present-day mass function and spatial distribution of stars. Praesepe shows clear evidence of mass segregation…
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.
