Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W2160927928', 'doi': 'https://doi.org/10.1088/0004-6256/136/4/1677', 'title': '<i>HUBBLE SPACE TELESCOPE</i>SPECTROSCOPIC OBSERVATIONS OF THE NARROW-LINE REGION IN NEARBY LOW-LUMINOSITY ACTIVE GALACTIC NUCLEI', 'display_name': '<i>HUBBLE SPACE TELESCOPE</i>SPECTROSCOPIC OBSERVATIONS OF THE NARROW-LINE REGION IN NEARBY LOW-LUMINOSITY ACTIVE GALACTIC NUCLEI', 'publication_year': 2008, 'publication_date': '2008-09-12', 'ids': {'openalex': 'https://openalex.org/W2160927928', 'doi': 'https://doi.org/10.1088/0004-6256/136/4/1677', 'mag': '2160927928'}, 'language': 'en', 'primary_location': {'is_oa': True, 'landing_page_url': 'https://doi.org/10.1088/0004-6256/136/4/1677', 'pdf_url': 'https://iopscience.iop.org/article/10.1088/0004-6256/136/4/1677/pdf', 'source': {'id': 'https://openalex.org/S100695177', 'display_name': 'The Astronomical Journal', 'issn_l': '0004-6256', 'issn': ['0004-6256', '1538-3881'], 'is_oa': True, 'is_in_doaj': True, 'is_core': True, 'host_organization': 'https://openalex.org/P4310311669', 'host_organization_name': 'Institute of Physics', 'host_organization_lineage': ['https://openalex.org/P4310311669'], 'host_organization_lineage_names': ['Institute of Physics'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': 'publishedVersion', 'is_accepted': True, 'is_published': True}, 'type': 'article', 'type_crossref': 'journal-article', 'indexed_in': ['crossref', 'datacite'], 'open_access': {'is_oa': True, 'oa_status': 'bronze', 'oa_url': 'https://iopscience.iop.org/article/10.1088/0004-6256/136/4/1677/pdf', 'any_repository_has_fulltext': True}, 'authorships': [{'author_position': 'first', 'author': {'id': 'https://openalex.org/A5001553407', 'display_name': 'Jonelle L. Walsh', 'orcid': 'https://orcid.org/0000-0002-1881-5908'}, 'institutions': [{'id': 'https://openalex.org/I204250578', 'display_name': 'University of California, Irvine', 'ror': 'https://ror.org/04gyf1771', 'country_code': 'US', 'type': 'education', 'lineage': ['https://openalex.org/I204250578']}], 'countries': ['US'], 'is_corresponding': True, 'raw_author_name': 'Jonelle L. Walsh', 'raw_affiliation_strings': ['Department of Physics and Astronomy, University of California at Irvine, 4129 Frederick Reines Hall, Irvine, CA 92697-4574, USA'], 'affiliations': [{'raw_affiliation_string': 'Department of Physics and Astronomy, University of California at Irvine, 4129 Frederick Reines Hall, Irvine, CA 92697-4574, USA', 'institution_ids': ['https://openalex.org/I204250578']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5019813691', 'display_name': 'Aaron J. Barth', 'orcid': 'https://orcid.org/0000-0002-3026-0562'}, 'institutions': [{'id': 'https://openalex.org/I204250578', 'display_name': 'University of California, Irvine', 'ror': 'https://ror.org/04gyf1771', 'country_code': 'US', 'type': 'education', 'lineage': ['https://openalex.org/I204250578']}], 'countries': ['US'], 'is_corresponding': True, 'raw_author_name': 'Aaron J. Barth', 'raw_affiliation_strings': ['Department of Physics and Astronomy, University of California at Irvine, 4129 Frederick Reines Hall, Irvine, CA 92697-4574, USA'], 'affiliations': [{'raw_affiliation_string': 'Department of Physics and Astronomy, University of California at Irvine, 4129 Frederick Reines Hall, Irvine, CA 92697-4574, USA', 'institution_ids': ['https://openalex.org/I204250578']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5054184482', 'display_name': 'Luis C. Ho', 'orcid': 'https://orcid.org/0000-0001-6947-5846'}, 'institutions': [{'id': 'https://openalex.org/I4210124388', 'display_name': 'Carnegie Observatories', 'ror': 'https://ror.org/03h4zjr91', 'country_code': 'US', 'type': 'facility', 'lineage': ['https://openalex.org/I196817621', 'https://openalex.org/I4210124388']}], 'countries': ['US'], 'is_corresponding': True, 'raw_author_name': 'Luis C. Ho', 'raw_affiliation_strings': ['The Observatories of the Carnegie Institution of Washington, 813 Santa Barbara Street, Pasadena, CA 91101, USA'], 'affiliations': [{'raw_affiliation_string': 'The Observatories of the Carnegie Institution of Washington, 813 Santa Barbara Street, Pasadena, CA 91101, USA', 'institution_ids': ['https://openalex.org/I4210124388']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5044578338', 'display_name': 'A. V. Filippenko', 'orcid': 'https://orcid.org/0000-0003-3460-0103'}, 'institutions': [{'id': 'https://openalex.org/I95457486', 'display_name': 'University of California, Berkeley', 'ror': 'https://ror.org/01an7q238', 'country_code': 'US', 'type': 'education', 'lineage': ['https://openalex.org/I95457486']}], 'countries': ['US'], 'is_corresponding': False, 'raw_author_name': 'Alexei V. Filippenko', 'raw_affiliation_strings': ['Department of Astronomy, University of California, Berkeley, CA 94720-3411, USA'], 'affiliations': [{'raw_affiliation_string': 'Department of Astronomy, University of California, Berkeley, CA 94720-3411, USA', 'institution_ids': ['https://openalex.org/I95457486']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5028539980', 'display_name': 'Hans‐Walter Rix', 'orcid': 'https://orcid.org/0000-0003-4996-9069'}, 'institutions': [{'id': 'https://openalex.org/I4210109156', 'display_name': 'Max Planck Institute for Astronomy', 'ror': 'https://ror.org/01vhnrs90', 'country_code': 'DE', 'type': 'facility', 'lineage': ['https://openalex.org/I149899117', 'https://openalex.org/I4210109156']}], 'countries': ['DE'], 'is_corresponding': True, 'raw_author_name': 'Hans-Walter Rix', 'raw_affiliation_strings': ['Max-Planck Institut für Astronomie, Königstuhl 17, 69117 Heidelberg, Germany'], 'affiliations': [{'raw_affiliation_string': 'Max-Planck Institut für Astronomie, Königstuhl 17, 69117 Heidelberg, Germany', 'institution_ids': ['https://openalex.org/I4210109156']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5011616813', 'display_name': 'Joseph C. Shields', 'orcid': 'https://orcid.org/0000-0002-7579-2829'}, 'institutions': [{'id': 'https://openalex.org/I4210106879', 'display_name': 'Ohio University', 'ror': 'https://ror.org/01jr3y717', 'country_code': 'US', 'type': 'education', 'lineage': ['https://openalex.org/I4210106879']}], 'countries': ['US'], 'is_corresponding': True, 'raw_author_name': 'Joseph C. Shields', 'raw_affiliation_strings': ['Department of Physics and Astronomy, Ohio University, Athens, OH 45701, USA'], 'affiliations': [{'raw_affiliation_string': 'Department of Physics and Astronomy, Ohio University, Athens, OH 45701, USA', 'institution_ids': ['https://openalex.org/I4210106879']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5105880000', 'display_name': 'M. Sarzi', 'orcid': 'https://orcid.org/0000-0003-2227-4902'}, 'institutions': [{'id': 'https://openalex.org/I141584323', 'display_name': 'University of Hertfordshire', 'ror': 'https://ror.org/0267vjk41', 'country_code': 'GB', 'type': 'education', 'lineage': ['https://openalex.org/I141584323']}], 'countries': ['GB'], 'is_corresponding': True, 'raw_author_name': 'Marc Sarzi', 'raw_affiliation_strings': ['Centre for Astrophysics Research, University of Hertfordshire, AL10 9AB Hatfield, UK'], 'affiliations': [{'raw_affiliation_string': 'Centre for Astrophysics Research, University of Hertfordshire, AL10 9AB Hatfield, UK', 'institution_ids': ['https://openalex.org/I141584323']}]}, {'author_position': 'last', 'author': {'id': 'https://openalex.org/A5064824868', 'display_name': 'W. L. W. Sargent', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I122411786', 'display_name': 'California Institute of Technology', 'ror': 'https://ror.org/05dxps055', 'country_code': 'US', 'type': 'education', 'lineage': ['https://openalex.org/I122411786']}], 'countries': ['US'], 'is_corresponding': False, 'raw_author_name': 'Wallace L. W. Sargent', 'raw_affiliation_strings': ['Palomar Observatory, California Institute of Technology, Pasadena, CA 91125, USA'], 'affiliations': [{'raw_affiliation_string': 'Palomar Observatory, California Institute of Technology, Pasadena, CA 91125, USA', 'institution_ids': ['https://openalex.org/I122411786']}]}], 'institution_assertions': [], 'countries_distinct_count': 3, 'institutions_distinct_count': 7, 'corresponding_author_ids': ['https://openalex.org/A5001553407', 'https://openalex.org/A5019813691', 'https://openalex.org/A5054184482', 'https://openalex.org/A5028539980', 'https://openalex.org/A5011616813', 'https://openalex.org/A5105880000'], 'corresponding_institution_ids': ['https://openalex.org/I204250578', 'https://openalex.org/I204250578', 'https://openalex.org/I4210124388', 'https://openalex.org/I4210109156', 'https://openalex.org/I4210106879', 'https://openalex.org/I141584323'], 'apc_list': {'value': 4499, 'currency': 'USD', 'value_usd': 4499, 'provenance': 'doaj'}, 'apc_paid': None, 'fwci': 1.984, 'has_fulltext': False, 'cited_by_count': 38, 'citation_normalized_percentile': {'value': 0.889385, 'is_in_top_1_percent': False, 'is_in_top_10_percent': False}, 'cited_by_percentile_year': {'min': 92, 'max': 93}, 'biblio': {'volume': '136', 'issue': '4', 'first_page': '1677', 'last_page': '1702'}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T10026', 'display_name': 'Galaxies: Formation, Evolution, Phenomena', 'score': 0.9999, 'subfield': {'id': 'https://openalex.org/subfields/3103', 'display_name': 'Astronomy and Astrophysics'}, 'field': {'id': 'https://openalex.org/fields/31', 'display_name': 'Physics and Astronomy'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}, 'topics': [{'id': 'https://openalex.org/T10026', 'display_name': 'Galaxies: Formation, Evolution, Phenomena', 'score': 0.9999, 'subfield': {'id': 'https://openalex.org/subfields/3103', 'display_name': 'Astronomy and Astrophysics'}, 'field': {'id': 'https://openalex.org/fields/31', 'display_name': 'Physics and Astronomy'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}, {'id': 'https://openalex.org/T10744', 'display_name': 'Astrophysical Phenomena and Observations', 'score': 0.9934, 'subfield': {'id': 'https://openalex.org/subfields/3103', 'display_name': 'Astronomy and Astrophysics'}, 'field': {'id': 'https://openalex.org/fields/31', 'display_name': 'Physics and Astronomy'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}, {'id': 'https://openalex.org/T12917', 'display_name': 'Astronomy and Astrophysical Research', 'score': 0.9901, 'subfield': {'id': 'https://openalex.org/subfields/3105', 'display_name': 'Instrumentation'}, 'field': {'id': 'https://openalex.org/fields/31', 'display_name': 'Physics and Astronomy'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}], 'keywords': [{'id': 'https://openalex.org/keywords/velocity-dispersion', 'display_name': 'Velocity dispersion', 'score': 0.5894787}], 'concepts': [{'id': 'https://openalex.org/C121332964', 'wikidata': 'https://www.wikidata.org/wiki/Q413', 'display_name': 'Physics', 'level': 0, 'score': 0.9492761}, {'id': 'https://openalex.org/C44870925', 'wikidata': 'https://www.wikidata.org/wiki/Q37547', 'display_name': 'Astrophysics', 'level': 1, 'score': 0.8588971}, {'id': 'https://openalex.org/C98444146', 'wikidata': 'https://www.wikidata.org/wiki/Q318', 'display_name': 'Galaxy', 'level': 2, 'score': 0.64874434}, {'id': 'https://openalex.org/C1276947', 'wikidata': 'https://www.wikidata.org/wiki/Q333', 'display_name': 'Astronomy', 'level': 1, 'score': 0.6361514}, {'id': 'https://openalex.org/C127529279', 'wikidata': 'https://www.wikidata.org/wiki/Q637450', 'display_name': 'Velocity dispersion', 'level': 3, 'score': 0.5894787}, {'id': 'https://openalex.org/C10767094', 'wikidata': 'https://www.wikidata.org/wiki/Q854155', 'display_name': 'Bulge', 'level': 3, 'score': 0.5747894}, {'id': 'https://openalex.org/C91228026', 'wikidata': 'https://www.wikidata.org/wiki/Q1048103', 'display_name': 'Surface brightness', 'level': 3, 'score': 0.5481879}, {'id': 'https://openalex.org/C43481613', 'wikidata': 'https://www.wikidata.org/wiki/Q46587', 'display_name': 'Active galactic nucleus', 'level': 3, 'score': 0.5459955}, {'id': 'https://openalex.org/C871022', 'wikidata': 'https://www.wikidata.org/wiki/Q184348', 'display_name': 'Elliptical galaxy', 'level': 3, 'score': 0.46762425}, {'id': 'https://openalex.org/C206564472', 'wikidata': 'https://www.wikidata.org/wiki/Q1475614', 'display_name': 'Galaxy rotation curve', 'level': 4, 'score': 0.43061495}, {'id': 'https://openalex.org/C12287442', 'wikidata': 'https://www.wikidata.org/wiki/Q105902', 'display_name': 'Luminosity', 'level': 3, 'score': 0.4124028}, {'id': 'https://openalex.org/C174802034', 'wikidata': 'https://www.wikidata.org/wiki/Q1995140', 'display_name': 'Galaxy formation and evolution', 'level': 3, 'score': 0.2627194}], 'mesh': [], 'locations_count': 4, 'locations': [{'is_oa': True, 'landing_page_url': 'https://doi.org/10.1088/0004-6256/136/4/1677', 'pdf_url': 'https://iopscience.iop.org/article/10.1088/0004-6256/136/4/1677/pdf', 'source': {'id': 'https://openalex.org/S100695177', 'display_name': 'The Astronomical Journal', 'issn_l': '0004-6256', 'issn': ['0004-6256', '1538-3881'], 'is_oa': True, 'is_in_doaj': True, 'is_core': True, 'host_organization': 'https://openalex.org/P4310311669', 'host_organization_name': 'Institute of Physics', 'host_organization_lineage': ['https://openalex.org/P4310311669'], 'host_organization_lineage_names': ['Institute of Physics'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': 'publishedVersion', 'is_accepted': True, 'is_published': True}, {'is_oa': True, 'landing_page_url': 'https://resolver.caltech.edu/CaltechAUTHORS:WALaj08', 'pdf_url': 'https://authors.library.caltech.edu/records/35jdq-vak83/files/WALaj08.pdf?download=1', 'source': {'id': 'https://openalex.org/S4306402161', 'display_name': 'CaltechAUTHORS (California Institute of Technology)', 'issn_l': None, 'issn': None, 'is_oa': True, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I122411786', 'host_organization_name': 'California Institute of Technology', 'host_organization_lineage': ['https://openalex.org/I122411786'], 'host_organization_lineage_names': ['California Institute of Technology'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': 'acceptedVersion', 'is_accepted': True, 'is_published': False}, {'is_oa': True, 'landing_page_url': 'http://arxiv.org/abs/0808.0914', 'pdf_url': 'http://arxiv.org/pdf/0808.0914', 'source': {'id': 'https://openalex.org/S4306400194', 'display_name': 'arXiv (Cornell University)', 'issn_l': None, 'issn': None, 'is_oa': True, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I205783295', 'host_organization_name': 'Cornell University', 'host_organization_lineage': ['https://openalex.org/I205783295'], 'host_organization_lineage_names': ['Cornell University'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': 'submittedVersion', 'is_accepted': False, 'is_published': False}, {'is_oa': False, 'landing_page_url': 'https://api.datacite.org/dois/10.48550/arxiv.0808.0914', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S4393179698', 'display_name': 'DataCite API', 'issn_l': None, 'issn': None, 'is_oa': True, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I4210145204', 'host_organization_name': 'DataCite', 'host_organization_lineage': ['https://openalex.org/I4210145204'], 'host_organization_lineage_names': ['DataCite'], 'type': 'metadata'}, 'license': None, 'license_id': None, 'version': None}], 'best_oa_location': {'is_oa': True, 'landing_page_url': 'https://doi.org/10.1088/0004-6256/136/4/1677', 'pdf_url': 'https://iopscience.iop.org/article/10.1088/0004-6256/136/4/1677/pdf', 'source': {'id': 'https://openalex.org/S100695177', 'display_name': 'The Astronomical Journal', 'issn_l': '0004-6256', 'issn': ['0004-6256', '1538-3881'], 'is_oa': True, 'is_in_doaj': True, 'is_core': True, 'host_organization': 'https://openalex.org/P4310311669', 'host_organization_name': 'Institute of Physics', 'host_organization_lineage': ['https://openalex.org/P4310311669'], 'host_organization_lineage_names': ['Institute of Physics'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': 'publishedVersion', 'is_accepted': True, 'is_published': True}, 'sustainable_development_goals': [], 'grants': [], 'datasets': [], 'versions': ['https://openalex.org/W2160927928', 'https://openalex.org/W3100114087'], 'referenced_works_count': 89, 'referenced_works': ['https://openalex.org/W147682015', 'https://openalex.org/W1510177343', 'https://openalex.org/W16936175', 'https://openalex.org/W1965659300', 'https://openalex.org/W1969823917', 'https://openalex.org/W1974922408', 'https://openalex.org/W1975266563', 'https://openalex.org/W1980001035', 'https://openalex.org/W1983901395', 'https://openalex.org/W1985488900', 'https://openalex.org/W1989672018', 'https://openalex.org/W1998224288', 'https://openalex.org/W1999883030', 'https://openalex.org/W2001079980', 'https://openalex.org/W2007083551', 'https://openalex.org/W2007502146', 'https://openalex.org/W2008720744', 'https://openalex.org/W2011224106', 'https://openalex.org/W2011641055', 'https://openalex.org/W2013364882', 'https://openalex.org/W2017077876', 'https://openalex.org/W2017762678', 'https://openalex.org/W2035637895', 'https://openalex.org/W2038340736', 'https://openalex.org/W2038784485', 'https://openalex.org/W2041542911', 'https://openalex.org/W2042265235', 'https://openalex.org/W2042542980', 'https://openalex.org/W2043258139', 'https://openalex.org/W2047354622', 'https://openalex.org/W2049062081', 'https://openalex.org/W2051475866', 'https://openalex.org/W2066185890', 'https://openalex.org/W2068858815', 'https://openalex.org/W2068928940', 'https://openalex.org/W2072905490', 'https://openalex.org/W2074966003', 'https://openalex.org/W2079854010', 'https://openalex.org/W2081115376', 'https://openalex.org/W2081234618', 'https://openalex.org/W2082217056', 'https://openalex.org/W2083778190', 'https://openalex.org/W2091306090', 'https://openalex.org/W2091910815', 'https://openalex.org/W2092551284', 'https://openalex.org/W2092991704', 'https://openalex.org/W2098564368', 'https://openalex.org/W2101811797', 'https://openalex.org/W2102748875', 'https://openalex.org/W2105459858', 'https://openalex.org/W2107144741', 'https://openalex.org/W2112297726', 'https://openalex.org/W2118827411', 'https://openalex.org/W2135894620', 'https://openalex.org/W2139253597', 'https://openalex.org/W2142892081', 'https://openalex.org/W2142923903', 'https://openalex.org/W2144102177', 'https://openalex.org/W2155045349', 'https://openalex.org/W2157310373', 'https://openalex.org/W2162475780', 'https://openalex.org/W2164126591', 'https://openalex.org/W2169224160', 'https://openalex.org/W2270637217', 'https://openalex.org/W232555331', 'https://openalex.org/W2569534441', 'https://openalex.org/W2746148666', 'https://openalex.org/W3098308377', 'https://openalex.org/W3098402119', 'https://openalex.org/W3098975407', 'https://openalex.org/W3099155372', 'https://openalex.org/W3099644107', 'https://openalex.org/W3099735651', 'https://openalex.org/W3100135918', 'https://openalex.org/W3100364045', 'https://openalex.org/W3100679294', 'https://openalex.org/W3101265163', 'https://openalex.org/W3101948535', 'https://openalex.org/W3102198414', 'https://openalex.org/W3102307138', 'https://openalex.org/W3102992155', 'https://openalex.org/W3103035920', 'https://openalex.org/W3103912237', 'https://openalex.org/W3105907233', 'https://openalex.org/W3106240063', 'https://openalex.org/W4211245634', 'https://openalex.org/W4229934221', 'https://openalex.org/W4238280675', 'https://openalex.org/W4301863757'], 'related_works': ['https://openalex.org/W4240199326', 'https://openalex.org/W3102624949', 'https://openalex.org/W3036528143', 'https://openalex.org/W3001353201', 'https://openalex.org/W2761481515', 'https://openalex.org/W2266429697', 'https://openalex.org/W2155235759', 'https://openalex.org/W2058674747', 'https://openalex.org/W2019296139', 'https://openalex.org/W2007106473'], 'abstract_inverted_index': {'We': [0, 179, 263], 'present': [1], 'Space': [2], 'Telescope': [3], 'Imaging': [4], 'Spectrograph': [5], 'observations': [6], 'of': [7, 140, 149, 166, 192, 199, 211, 242, 266, 287, 301, 334], '14': [8], 'nearby': [9], 'low-luminosity': [10], 'active': [11], 'galactic': [12], 'nuclei,': [13], 'including': [14], '13': [15], 'LINERs': [16], 'and': [17, 31, 47, 244, 272], '1': [18, 143, 152], 'Seyfert,': [19], 'taken': [20], 'at': [21], 'multiple': [22, 101], 'parallel': [23], 'slit': [24], 'positions': [25], 'centered': [26], 'on': [27], 'the': [28, 33, 42, 52, 61, 70, 77, 88, 107, 133, 138, 141, 150, 167, 182, 193, 207, 217, 225, 230, 237, 254, 293, 332, 335], 'galaxy': [29, 62], 'nuclei': [30], 'covering': [32], 'Hα': [34], 'spectral': [35], 'region.': [36], 'For': [37, 221], 'each': [38], 'galaxy,': [39], 'we': [40, 227, 290], 'measure': [41], 'emission-line': [43, 108, 231], 'velocities,': [44], 'line': [45, 119, 186, 294], 'widths,': [46], 'strengths': [48], 'to': [49, 206, 213, 253, 312], 'map': [50], 'out': [51], 'inner': [53, 134], 'narrow-line': [54], 'region': [55], 'structure—typically': [56], 'within': [57, 132, 236, 260], '∼100': [58], 'pc': [59], 'from': [60, 203], 'nucleus.': [63], 'There': [64], 'is': [65, 79, 112, 159, 234], 'a': [66, 74, 122, 129, 155, 163, 190, 197, 299, 318], 'wide': [67], 'diversity': [68], 'among': [69], 'velocity': [71, 102, 232, 257], 'fields:': [72], 'in': [73, 81, 85, 125, 137, 224, 269, 306, 321], 'few': [75, 319], 'galaxies': [76, 87, 223], 'gas': [78, 89, 126, 267], 'clearly': [80], 'disk-like': [82], 'rotation,': [83], 'while': [84], 'other': [86], 'kinematics': [90], 'either': [91], 'appear': [92], 'chaotic': [93], 'or': [94], 'are': [95], 'dominated': [96, 215], 'by': [97, 162, 216], 'radial': [98, 123], 'flows': [99], 'with': [100, 128, 246, 280], 'components.': [103], 'In': [104], 'most': [105, 222], 'objects,': [106], 'surface': [109], 'brightness': [110], 'distribution': [111], 'very': [113], 'centrally': [114], 'peaked.': [115], 'The': [116, 146], '[S': [117], 'ii]': [118, 184], 'ratio': [120], 'indicates': [121], 'stratification': [124], 'density,': [127], 'sharp': [130], 'increase': [131, 297], '10–20': [135], 'pc,': [136], 'majority': [139], 'Type': [142, 151], '(broad-lined)': [144], 'objects.': [145], 'electron-density': [147], 'gradients': [148], 'objects': [153, 320], 'exhibit': [154], 'similar': [156, 252], 'shape': [157], 'that': [158, 229, 274, 292], 'well': [160], 'fit': [161], 'power': [164], 'law': [165], 'form': [168], 'ne': [169], '=': [170, 175], 'n0(r/1': [171], 'pc)α,': [172], 'where': [173], 'α': [174], '−0.60': [176], '±': [177], '0.13.': [178], 'examine': [180], 'how': [181], '[N': [183], 'λ6583': [185], 'width': [187, 295], 'varies': [188], 'as': [189, 298, 304], 'function': [191, 300], 'aperture': [194, 248, 302], 'size': [195, 249], 'over': [196], 'range': [198], 'spatial': [200], 'scales,': [201], 'extending': [202], 'scales': [204, 214], 'comparable': [205], 'black': [208, 238, 314], "hole's": [209, 239], 'sphere': [210, 241], 'influence': [212], 'host': [218], "galaxy's": [219], 'bulge.': [220], 'sample,': [226], 'find': [228], 'dispersion': [233, 258], 'largest': [235], 'gravitational': [240], 'influence,': [243], 'decreases': [245], 'increasing': [247], 'toward': [250], 'values': [251], 'bulge': [255], 'stellar': [256], 'measured': [259], 'ground-based': [261], 'apertures.': [262], 'construct': [264], 'models': [265], 'disks': [268], 'circular': [270], 'rotation': [271], 'show': [273, 291], 'this': [275, 322], 'behavior': [276], 'can': [277, 296], 'be': [278, 325], 'consistent': [279], 'virial': [281], 'motion,': [282], 'although': [283, 327], 'for': [284, 317], 'some': [285], 'combinations': [286], 'disk': [288], 'parameters': [289], 'size,': [303], 'observed': [305], 'NGC': [307], '3245.': [308], 'Future': [309], 'dynamical': [310], 'modeling': [311], 'determine': [313], 'hole': [315], 'masses': [316], 'sample': [323], 'may': [324], 'worthwhile,': [326], 'disorganized': [328], 'motion': [329], 'will': [330], 'limit': [331], 'accuracy': [333], 'mass': [336], 'measurements.': [337]}, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W2160927928', 'counts_by_year': [{'year': 2024, 'cited_by_count': 2}, {'year': 2023, 'cited_by_count': 2}, {'year': 2022, 'cited_by_count': 3}, {'year': 2020, 'cited_by_count': 2}, {'year': 2018, 'cited_by_count': 3}, {'year': 2017, 'cited_by_count': 1}, {'year': 2016, 'cited_by_count': 1}, {'year': 2015, 'cited_by_count': 3}, {'year': 2014, 'cited_by_count': 2}, {'year': 2013, 'cited_by_count': 4}, {'year': 2012, 'cited_by_count': 3}], 'updated_date': '2024-12-13T11:13:49.364871', 'created_date': '2016-06-24'}