arXiv (Cornell University)
First Resolution of a Main Sequence G-Star Astrosphere Using Chandra
December 2025 • C. M. Lisse, S. J. Wolk, Bradford Snios, J.R. McNutt, Jonathan D. Slavin, Rachel A. Osten, Dean C. Hines, John H. Debes, Dimitra Koutroumpa, V. Kharc…
We report resolution of a halo of X-ray line emission surrounding the Zero Age Main Sequence (ZAMS) G8.5V star HD 61005 by Chandra ACIS-S. Located only 36.4 pc distant, HD 61005 is young (approx. 100 Myr), x-ray bright (300 times Solar), observed with nearly edge-on geometry, and surrounded by Local Interstellar Medium (LISM) material denser than in the environ of the Sun. HD 61005 is known to harbor large amounts of circumstellar dust in a dense ecliptic plane full of mm-sized particles plus attached, extended wi…