{"work":{"id":"47af141c-4455-4436-8c7e-adcd5c1007bd","openalex_id":"https://openalex.org/W2088034685","doi":"10.1086/381875","arxiv_id":"astro-ph/0312201","raw_key":null,"title":"Parametric Recovery of Line-of-Sight Velocity Distributions from Absorption-Line Spectra of Galaxies via Penalized Likelihood","authors":[{"given":"Michele","family":"Cappellari","sequence":"first","affiliation":[]},{"given":"Eric","family":"Emsellem","sequence":"additional","affiliation":[]}],"authors_text":"Cappellari, M","year":2003,"venue":"astro-ph","abstract":"We investigate the accuracy of the parametric recovery of the line-of-sight velocity distribution (LOSVD) of the stars in a galaxy, while working in pixel space. Problems appear when the data have a low signal-to-noise ratio, or the observed LOSVD is not well sampled by the data. We propose a simple solution based on maximum penalized likelihood and we apply it to the common situation in which the LOSVD is described by a Gauss-Hermite series. We compare different techniques by extracting the stellar kinematics from observations of the barred lenticular galaxy NGC 3384 obtained with the SAURON integral-field spectrograph.","external_url":"https://arxiv.org/abs/astro-ph/0312201","cited_by_count":1918,"metadata_source":"pith","metadata_fetched_at":"2026-07-10T17:27:26.218506+00:00","pith_arxiv_id":"astro-ph/0312201","created_at":"2026-05-08T18:08:53.007552+00:00","updated_at":"2026-07-11T11:50:26.030339+00:00","title_quality_ok":true,"display_title":"eprint =","render_title":"eprint ="},"hub":{"state":{"work_id":"47af141c-4455-4436-8c7e-adcd5c1007bd","tier":"hub","tier_reason":"10+ Pith inbound or 1,000+ external citations","pith_inbound_count":44,"external_cited_by_count":1918,"distinct_field_count":4,"first_pith_cited_at":"2016-07-28T17:16:58+00:00","last_pith_cited_at":"2026-07-09T15:07:28+00:00","author_build_status":"not_needed","summary_status":"needed","contexts_status":"needed","graph_status":"needed","ask_index_status":"not_needed","reader_status":"not_needed","recognition_status":"not_needed","updated_at":"2026-08-22T09:29:28.144473+00:00","tier_text":"hub"},"tier":"hub","role_counts":[{"context_role":"method","n":2},{"context_role":"background","n":1}],"polarity_counts":[{"context_polarity":"use_method","n":2},{"context_polarity":"unclear","n":1}],"runs":{},"summary":{},"graph":{},"authors":[]}}