{"doi":"10.1103/physrevd.109.123527","title":"Low- and high-redshift H ii starburst galaxies obey different luminosity-velocity dispersion relations","abstract":"To determine whether or not H ii starburst galaxies (H iiG) are standardizable candles, we study the correlation between the $\\mathrm{H}\\ensuremath{\\beta}$ luminosity ($L$) and the velocity dispersion ($\\ensuremath{\\sigma}$) of the ionized gas from H iiG measurements by simultaneously constraining the $L\\ensuremath{-}\\ensuremath{\\sigma}$ relation parameters and the cosmological model parameters. We investigate six flat and nonflat relativistic dark energy cosmological models. We find that low-redshift and high-redshift H iiG data subsets are standardizable but obey different $L\\ensuremath{-}\\ensuremath{\\sigma}$ relations. Current H iiG data are too sparse and too nonuniformly distributed in redshift to allow for a determination of why the samples follow different relations, but it could be caused by the high-redshift sample containing relatively fewer intrinsically dimmer sources (Malmquist bias) or it could be a consequence of H iiG evolution. Until this issue is better understood, H iiG data cosmological constraints must be treated with caution.","journal":"Physical review. D/Physical review. D.","year":2024,"id":442637,"datarank":0.0,"base_score":0.0,"endowment":0.0,"self_citation_contribution":0.0,"citation_network_contribution":0.0,"self_endowment_contribution":0.0,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":8,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":0.9586,"is_data_producer":false,"deposit_databanks":null,"is_oa":false,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":"2024-01-01","fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":853340,"name":"Bharat Ratra","orcid":"0000-0002-7307-0726","position":1,"is_corresponding":false},{"id":853338,"name":"Shulei Cao","orcid":"0000-0003-2421-7071","position":0,"is_corresponding":true}],"reference_count":119,"raw_metadata":null,"created_at":"2026-07-19T02:01:20.107161Z","pmid":null,"pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}