{"paper":{"title":"A catalogue of nuclear stellar velocity dispersions of nearby galaxies from H$\\alpha$ STIS spectra to constrain supermassive black hole masses","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"2), 2) ((1) Dipartimento di Fisica e Astronomia \"G. Galilei'', (2) INAF-Osservatorio Astronomico di Padova, (3) Armagh Observatory, 4), (4) Centre for Astrophysics Research, (5) D\\'epartement Sciences de la Mati\\`ere, (6) Instituto de Astronomia y Ciencias Planetarias, A. Pizzella (1, B. Pagani (5), Chile), E. Dalla Bont\\`a (1, E. M. Corsini (1, ENS de Lyon, France, I. Pagotto (1), Italy, L. Morelli (6), M. Sarzi (3, Planetarium, UK, Universidad de Atacama, Universit\\`a di Padova, University of Hertfordshire","submitted_at":"2018-11-07T22:02:02Z","abstract_excerpt":"We present new measurements for the nuclear stellar velocity dispersion $\\sigma_{\\ast}$ within sub-arcsecond apertures for 28 nearby galaxies. Our data consist of Space Telescope Imaging Spectrograph (STIS) long-slit spectra obtained with the G750M grating centred on the H$\\alpha$ spectral range. We fit the spectra using a library of single stellar population models and Gaussian emission lines, while constraining in most cases the stellar-population content from an initial fit to G430L STIS spectra. We illustrate how these $\\sigma_{\\ast}$ measurements can be useful for constraining the mass $M"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.03160","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"}