{"paper":{"title":"Observations and modelling of CO and [CI] in disks. First detections of [CI] and constraints on the carbon abundance","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A. Aikutalp, A. Baryshev, A. Endo, A. Karska, C. Risacher, D. Fedele, E.F. van Dishoeck, E. Koumpia, F. Wyrowski, J.-P. Perez Beaupuits, L. Kristensen, M. Carney, M. Hogerheijde, M. Kama, N. Van der Marel, P. Klaassen, R. G\\\"usten, R.J. van Weeren, S. Bruderer, S. Leurini, T.A. van Kempen, U.A. Y{\\i}ld{\\i}z, W. Boland, W. Frieswijk, Y. Choi, Z. Nagy","submitted_at":"2016-01-07T09:01:52Z","abstract_excerpt":"The gas-solid budget of carbon in protoplanetary disks is related to the composition of the cores and atmospheres of the planets forming in them. The key gas-phase carbon carriers CO, C$^{0}$ and C$^{+}$ can now be observed in disks. The gas-phase carbon abundance in disks has not yet been well characterized, we aim to obtain new constraints on the [C]/[H] ratio in a sample of disks, and to get an overview of the strength of [CI] and warm CO emission.\n  We carried out a survey of the CO$\\,6$--$5$ and [CI]$\\,1$--$0$ and $2$--$1$ lines towards $37$ disks with APEX, and supplemented it with [CII]"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.01449","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":""},"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"}