{"paper":{"title":"The 2175 {\\AA} dust feature in star-forming galaxies at $1.3\\le z\\le 1.8$: the dependence on stellar mass and specific star formation rate","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Alvio Renzini, Daichi Kashino, David B. Sanders, Elena Zucca, Emanuele Daddi, Jeyhan S. Kartaltepe, John D. Silverman, Olga Cucciati, Roser Pell\\'o, Sandro Bardelli, Simon J. Lilly, Vincenzo Mainieri, Ying-jie Peng","submitted_at":"2020-09-28T18:56:14Z","abstract_excerpt":"We present direct spectroscopic measurements of the broad 2175~{\\AA} absorption feature in 505 star-forming main-sequence galaxies at $1.3\\le z\\le 1.8$ using individual and stacked spectra from the zCOSMOS-deep survey. Significant 2175~{\\AA} excess absorption features of moderate strength are measured, especially in the composite spectra. The excess absorption is well described by a Drude profile. The bump amplitude expressed in units of $k(\\lambda)=A(\\lambda)/E(B-V)$, relative to the featureless Calzetti et al. law, has a range $B_k\\approx0.2\\textrm{--}0.8$. The bump amplitude decreases with "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2009.13582","kind":"arxiv","version":2},"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/2009.13582/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"}