Publication Information

{'id': 'https://openalex.org/W2078272789', 'doi': 'https://doi.org/10.1086/156944', 'title': 'HM Sagittae as a young planetary nebula', 'display_name': 'HM Sagittae as a young planetary nebula', 'publication_year': 1979, 'publication_date': '1979-04-01', 'ids': {'openalex': 'https://openalex.org/W2078272789', 'doi': 'https://doi.org/10.1086/156944', 'mag': '2078272789'}, 'language': 'en', 'primary_location': {'is_oa': True, 'landing_page_url': 'https://doi.org/10.1086/156944', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S1980519', 'display_name': 'The Astrophysical Journal', 'issn_l': '0004-637X', 'issn': ['0004-637X', '1538-4357'], 'is_oa': True, 'is_in_doaj': True, 'is_core': True, 'host_organization': 'https://openalex.org/P4310320083', 'host_organization_name': 'IOP Publishing', 'host_organization_lineage': ['https://openalex.org/P4310311669', 'https://openalex.org/P4310320083'], 'host_organization_lineage_names': ['Institute of Physics', 'IOP Publishing'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': 'publishedVersion', 'is_accepted': True, 'is_published': True}, 'type': 'article', 'type_crossref': 'journal-article', 'indexed_in': ['crossref'], 'open_access': {'is_oa': True, 'oa_status': 'bronze', 'oa_url': 'https://doi.org/10.1086/156944', 'any_repository_has_fulltext': False}, 'authorships': [{'author_position': 'first', 'author': {'id': 'https://openalex.org/A5006068776', 'display_name': 'Sun Kwok', 'orcid': 'https://orcid.org/0000-0001-7708-081X'}, 'institutions': [], 'countries': [], 'is_corresponding': False, 'raw_author_name': 'S. Kwok', 'raw_affiliation_strings': [], 'affiliations': []}, {'author_position': 'last', 'author': {'id': 'https://openalex.org/A5066974141', 'display_name': 'C. R. Purton', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I192455969', 'display_name': 'York University', 'ror': 'https://ror.org/05fq50484', 'country_code': 'CA', 'type': 'education', 'lineage': ['https://openalex.org/I192455969']}], 'countries': ['CA'], 'is_corresponding': False, 'raw_author_name': 'C. R. Purton', 'raw_affiliation_strings': ['CRESS, York University, Toronto'], 'affiliations': [{'raw_affiliation_string': 'CRESS, York University, Toronto', 'institution_ids': ['https://openalex.org/I192455969']}]}], 'institution_assertions': [], 'countries_distinct_count': 1, 'institutions_distinct_count': 1, 'corresponding_author_ids': [], 'corresponding_institution_ids': [], 'apc_list': {'value': 4499, 'currency': 'USD', 'value_usd': 4499, 'provenance': 'doaj'}, 'apc_paid': None, 'fwci': 3.802, 'has_fulltext': False, 'cited_by_count': 30, 'citation_normalized_percentile': {'value': 0.790669, 'is_in_top_1_percent': False, 'is_in_top_10_percent': False}, 'cited_by_percentile_year': {'min': 90, 'max': 91}, 'biblio': {'volume': '229', 'issue': None, 'first_page': '187', 'last_page': '187'}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T10039', 'display_name': 'Stellar, planetary, and galactic studies', 'score': 0.9983, '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/T10039', 'display_name': 'Stellar, planetary, and galactic studies', 'score': 0.9983, '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/T10477', 'display_name': 'Astrophysics and Star Formation Studies', 'score': 0.9971, '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/T10325', 'display_name': 'Astro and Planetary Science', 'score': 0.9931, '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'}}], 'keywords': [{'id': 'https://openalex.org/keywords/asymptotic-giant-branch', 'display_name': 'Asymptotic giant branch', 'score': 0.5082042}, {'id': 'https://openalex.org/keywords/bipolar-nebula', 'display_name': 'Bipolar nebula', 'score': 0.48736125}, {'id': 'https://openalex.org/keywords/stellar-mass', 'display_name': 'Stellar mass', 'score': 0.46076894}], 'concepts': [{'id': 'https://openalex.org/C95373548', 'wikidata': 'https://www.wikidata.org/wiki/Q13632', 'display_name': 'Planetary nebula', 'level': 3, 'score': 0.94619197}, {'id': 'https://openalex.org/C121332964', 'wikidata': 'https://www.wikidata.org/wiki/Q413', 'display_name': 'Physics', 'level': 0, 'score': 0.9147524}, {'id': 'https://openalex.org/C44870925', 'wikidata': 'https://www.wikidata.org/wiki/Q37547', 'display_name': 'Astrophysics', 'level': 1, 'score': 0.8051039}, {'id': 'https://openalex.org/C170084019', 'wikidata': 'https://www.wikidata.org/wiki/Q2035809', 'display_name': 'Protoplanetary nebula', 'level': 4, 'score': 0.72027165}, {'id': 'https://openalex.org/C97818539', 'wikidata': 'https://www.wikidata.org/wiki/Q202265', 'display_name': 'Emission nebula', 'level': 4, 'score': 0.65982205}, {'id': 'https://openalex.org/C1276947', 'wikidata': 'https://www.wikidata.org/wiki/Q333', 'display_name': 'Astronomy', 'level': 1, 'score': 0.6412543}, {'id': 'https://openalex.org/C2779496878', 'wikidata': 'https://www.wikidata.org/wiki/Q42372', 'display_name': 'Nebula', 'level': 3, 'score': 0.62459207}, {'id': 'https://openalex.org/C181313176', 'wikidata': 'https://www.wikidata.org/wiki/Q50089', 'display_name': 'Asymptotic giant branch', 'level': 3, 'score': 0.5082042}, {'id': 'https://openalex.org/C6293838', 'wikidata': 'https://www.wikidata.org/wiki/Q2722426', 'display_name': 'Bipolar nebula', 'level': 5, 'score': 0.48736125}, {'id': 'https://openalex.org/C150846664', 'wikidata': 'https://www.wikidata.org/wiki/Q7602306', 'display_name': 'Stars', 'level': 2, 'score': 0.48341835}, {'id': 'https://openalex.org/C5788528', 'wikidata': 'https://www.wikidata.org/wiki/Q5042750', 'display_name': 'Stellar mass loss', 'level': 4, 'score': 0.46635523}, {'id': 'https://openalex.org/C168589115', 'wikidata': 'https://www.wikidata.org/wiki/Q3079618', 'display_name': 'Stellar mass', 'level': 4, 'score': 0.46076894}, {'id': 'https://openalex.org/C4839761', 'wikidata': 'https://www.wikidata.org/wiki/Q212111', 'display_name': 'Spectral line', 'level': 2, 'score': 0.43487936}, {'id': 'https://openalex.org/C110472602', 'wikidata': 'https://www.wikidata.org/wiki/Q6472', 'display_name': 'Stellar evolution', 'level': 3, 'score': 0.39031518}, {'id': 'https://openalex.org/C125857072', 'wikidata': 'https://www.wikidata.org/wiki/Q16744', 'display_name': 'Star formation', 'level': 3, 'score': 0.18458712}], 'mesh': [], 'locations_count': 1, 'locations': [{'is_oa': True, 'landing_page_url': 'https://doi.org/10.1086/156944', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S1980519', 'display_name': 'The Astrophysical Journal', 'issn_l': '0004-637X', 'issn': ['0004-637X', '1538-4357'], 'is_oa': True, 'is_in_doaj': True, 'is_core': True, 'host_organization': 'https://openalex.org/P4310320083', 'host_organization_name': 'IOP Publishing', 'host_organization_lineage': ['https://openalex.org/P4310311669', 'https://openalex.org/P4310320083'], 'host_organization_lineage_names': ['Institute of Physics', 'IOP Publishing'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': 'publishedVersion', 'is_accepted': True, 'is_published': True}], 'best_oa_location': {'is_oa': True, 'landing_page_url': 'https://doi.org/10.1086/156944', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S1980519', 'display_name': 'The Astrophysical Journal', 'issn_l': '0004-637X', 'issn': ['0004-637X', '1538-4357'], 'is_oa': True, 'is_in_doaj': True, 'is_core': True, 'host_organization': 'https://openalex.org/P4310320083', 'host_organization_name': 'IOP Publishing', 'host_organization_lineage': ['https://openalex.org/P4310311669', 'https://openalex.org/P4310320083'], 'host_organization_lineage_names': ['Institute of Physics', 'IOP Publishing'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': 'publishedVersion', 'is_accepted': True, 'is_published': True}, 'sustainable_development_goals': [], 'grants': [], 'datasets': [], 'versions': [], 'referenced_works_count': 0, 'referenced_works': [], 'related_works': ['https://openalex.org/W85711916', 'https://openalex.org/W32469858', 'https://openalex.org/W3122043522', 'https://openalex.org/W2057463318', 'https://openalex.org/W1998978498', 'https://openalex.org/W1966238623', 'https://openalex.org/W1966060987', 'https://openalex.org/W1651608825', 'https://openalex.org/W1593749796', 'https://openalex.org/W129532647'], 'abstract_inverted_index': {'view': [0], 'Abstract': [1, 29], 'Citations': [2], '(51)': [3], 'References': [4], '(29)': [5], 'Co-Reads': [6], 'Similar': [7], 'Papers': [8], 'Volume': [9], 'Content': [10], 'Graphics': [11], 'Metrics': [12], 'Export': [13], 'Citation': [14], 'NASA/ADS': [15], 'HM': [16, 30, 55], 'Sagittae': [17, 31, 56], 'as': [18], 'a': [19, 36, 44, 91, 104], 'young': [20, 38], 'planetary': [21, 39, 68, 132], 'nebula.': [22, 107], 'Kwok,': [23], 'S.': [24], ';': [25], 'Purton,': [26], 'C.': [27], 'R.': [28], 'is': [32, 78, 112], 'suggested': [33], 'to': [34, 80, 87, 114], 'be': [35, 81, 115], 'very': [37], 'nebula': [40, 69, 133], 'recently': [41], 'transformed': [42], 'from': [43], 'red-giant': [45], 'star': [46], 'through': [47], 'continuous': [48], 'mass': [49, 111], 'loss.': [50], 'The': [51, 71, 108, 136], 'observational': [52], 'data': [53, 194], 'for': [54], 'are': [57], 'analyzed': [58], 'in': [59, 73], 'terms': [60], 'of': [61, 67, 131], 'the': [62, 74, 88, 99, 118, 127], 'interacting': [63, 119], 'stellar': [64, 120], 'wind': [65, 121], 'model': [66, 122, 130], 'formation.': [70, 134], 'density': [72], 'newly': [75], 'formed': [76], 'shell': [77], 'found': [79, 97], 'at': [82], 'least': [83], '5': [84], 'x': [85], '10': [86], '7th/cu': [89], 'cm,': [90], 'value': [92], 'considerably': [93], 'higher': [94], 'than': [95], 'that': [96], 'by': [98], 'conventional': [100, 128], 'analysis,': [101], 'which': [102], 'assumes': [103], 'single-component': [105], 'homogeneous': [106], 'low': [109], 'observed': [110], 'shown': [113], 'consistent': [116, 125], 'with': [117, 126], 'but': [123], 'not': [124], 'sudden-ejection': [129], 'Publication:': [135], 'Astrophysical': [137], 'Journal': [138], 'Pub': [139], 'Date:': [140], 'April': [141], '1979': [142], 'DOI:': [143], '10.1086/156944': [144], 'Bibcode:': [145], '1979ApJ...229..187K': [146], 'Keywords:': [147], 'Emission': [148, 167], 'Spectra;': [149, 158, 165, 170], 'Planetary': [150, 177, 179, 181, 184, 186], 'Nebulae;': [151], 'Red': [152], 'Giant': [153], 'Stars;': [154], 'Stellar': [155, 157, 159, 171, 173], 'Models;': [156], 'Winds;': [160], 'Distance;': [161], 'Forbidden': [162], 'Bands;': [163], 'Infrared': [164], 'Optical': [166], 'Spectroscopy;': [168], 'Radio': [169], 'Envelopes;': [172], 'Mass': [174], 'Ejection;': [175], 'Astrophysics;': [176], 'Nebulae:Formation;': [178], 'Nebulae:Models;': [180], 'Nebulae:Red': [182], 'Giants;': [183], 'Nebulae:Spectra;': [185], 'Nebulae:Stellar': [187], 'Winds': [188], 'full': [189], 'text': [190], 'sources': [191], 'ADS': [192], '|': [193], 'products': [195], 'SIMBAD': [196], '(2)': [197]}, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W2078272789', 'counts_by_year': [], 'updated_date': '2024-12-08T19:06:02.426667', 'created_date': '2016-06-24'}