{"paper":{"title":"The FUV spectrum of TW Hya. I. Observations of H$_2$ Fluorescence","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Brian E. Wood, Chris M. Johns-Krull, Gregory J. Herczeg, Jeff A. Valenti, Jeffrey L. Linsky","submitted_at":"2002-01-18T21:01:36Z","abstract_excerpt":"We observed the classical T Tauri star TW Hya with \\textit{HST}/STIS using the E140M grating, from 1150--1700 \\AA, with the E230M grating, from 2200--2900 \\AA, and with \\FUSE from 900--1180 \\AA. Emission in 143 Lyman-band H$_2$ lines representing 19 progressions dominates the spectral region from 1250--1650 \\AA. The total H$_2$ emission line flux is $1.94 \\times 10^{-12}$ erg cm$^{-2}$ s$^{-1}$, which corresponds to $1.90\\times10^{-4}$ $L_\\odot$ at TW Hya's distance of 56 pc. A broad stellar \\Lya line photoexcites the H$_2$ from excited rovibrational levels of the ground electronic state to ex"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0201319","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/astro-ph/0201319/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"}