edu.ucar.opensky::articles:43944 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-24T17:46:27.906411 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.net/ark:/85065/d7nv9pp9 https://doi.org/10.5281/zenodo.15352084 https Related Software #1 markgiovinazzi/binary_mc: binary_mcmc v1.0.0 The NEID Earth Twin Survey. II. Dynamical masses in seven high-acceleration star systems 2025-07-01T00:00:00Z publication https://n2t.net/ark:/85065/d7nv9pp9 https://doi.org/10.3847/1538-3881/add922 M. R. Giovinazzi author C. H. Blake author Robertson, P. author Lin, A. S. J. author Gupta, A. author Mahadevan, S. author Wright, J. T. author Bardalez Gagliuffi, D. author Dong, J. author Fernandes, R. B. author Fitzmaurice, E. author Halverson, S. author Kanodia, S. author Logsdon, S. E. author Luhn, J. K. author McElwain, M. W. author Monson, A. author Ninan, J. P. author Rajagopal, J. author Roy, A. author Schwab, C. author Stefánsson, G. author Terrien, R. author J. D. Eastman author Horner, J. author Plavchan, P. author Wang, S. X. author Maurice L. Wilson author Wittenmyer, R. A. author UCAR/NCAR - Library publisher We present a set of companion dynamical masses and orbital parameters of seven star systems from the NEID Earth Twin Survey with significant absolute astrometric accelerations between the epochs of Hipparcos and Gaia. These include four binary star systems (HD 68017 AB, 61 Cygni AB, HD 24496 AB, and HD 4614 AB) and three planetary systems (HD 217107, HD 190360, and HD 154345). Our analyses incorporate a long baseline of RVs that includes over 1100 previously unpublished measurements from NEID and MINERVA, extending the overall RV baseline for each system by ≈2.5 yr, as well as relative astrometry for the stellar binary systems where the positions of both stars are well measured. In each case, the combination of astrometry and RVs constrains the three-dimensional acceleration of the host star and enables precise dynamical masses. We publish true masses for three planets whose measurements were previously entangled with their inclinations, four stellar masses with ≲1% relative precision, and improved orbital solutions for all seven systems, including the first for HD 24496 AB. These solutions not only agree with previous estimates, but also improve their fidelity. We also explore each system for evidence of periodic signals in the residuals around our best-fit models, and discuss the potential that the three planetary systems have for being directly imaged. With dynamical mass estimates and reliable orbit ephemerides, these seven star systems represent promising benchmarks for future stellar and planetary characterization efforts, and are amenable for further improvement with the upcoming release of Gaia epoch astrometry. UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication <style type="text/css"></style><span style="font-family:Arial;font-size:10pt;font-style:normal;" data-sheets-root="1">Copyright author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.</span> None eng geoscientificInformation