{"paper":{"title":"VLT/MUSE Detection of the AB Aurigae b Protoplanet with $H _{\\rm \\alpha}$ Spectroscopy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"astro-ph.EP","authors_text":"Erica Dykes, Jun Hashimoto, Misato Fukagawa, Mona El Morsy, Motohide Tamura, Ruobing Dong, Takayuki Muto, Thayne Currie, Yuhiko Aoyama","submitted_at":"2025-08-25T18:00:02Z","abstract_excerpt":"We analyze high-contrast, medium-spectral-resolution $H_{\\rm \\alpha}$ observations of the star AB Aurigae using the Very Large Telescope's Multi Unit Spectroscopic Explorer (MUSE). In multiple epochs, MUSE detects the AB Aur b protoplanet discovered from Subaru/SCExAO data in emission at wavelengths slightly blue-shifted from the $H_{\\rm \\alpha}$ line center (i.e. at 6558.88--6560.13 \\AA; $\\sim$ -100 km s$^{-1}$) and in absorption at redshifted wavelengths (6562.8--6565.1 \\AA; $\\sim$ 75 km s$^{-1}$). AB Aur b's $H_{\\rm \\alpha}$ spectrum is inconsistent with that of the host star or the average"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2508.18351","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2508.18351/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}