| Téléchargement | - Voir la version finale : The GBT diffuse ionized gas survey (GDIGS): discrete sources (PDF, 1.5 Mio)
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| DOI | Trouver le DOI : https://doi.org/10.3847/1538-4357/acfc39 |
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| Auteur | Rechercher : Linville, Dylan J.Identifiant ORCID : https://orcid.org/0000-0002-4727-7619; Rechercher : Luisi, MatteoIdentifiant ORCID : https://orcid.org/0000-0001-8061-216X; Rechercher : Anderson, L. D.Identifiant ORCID : https://orcid.org/0000-0001-8800-1793; Rechercher : Liu, BinIdentifiant ORCID : https://orcid.org/0000-0002-1311-8839; Rechercher : Bania, T. M.Identifiant ORCID : https://orcid.org/0000-0003-4866-460X; Rechercher : Balser, Dana S.Identifiant ORCID : https://orcid.org/0000-0002-2465-7803; Rechercher : Wenger, Trey V.1Identifiant ORCID : https://orcid.org/0000-0003-0640-7787; Rechercher : Haffner, L. M.Identifiant ORCID : https://orcid.org/0000-0002-9947-6396; Rechercher : Mascoop, J. L.Identifiant ORCID : https://orcid.org/0000-0002-3758-2492 |
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| Affiliation | - Conseil national de recherches Canada. Herzberg en astronomie et en astrophysique
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| Bailleur de fonds | Rechercher : National Science Foundation |
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| Format | Texte, Article |
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| Sujet | warm ionized medium; interstellar plasma; H II regions; interstellar line emission; interstellar medium |
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| Résumé | The Green Bank Telescope Diffuse Ionized Gas Survey (GDIGS) traces ionized gas in the Galactic midplane by observing radio recombination line (RRL) emission from 4 to 8 GHz. The nominal survey zone is 32°3 > ℓ > −5°, | b | < 0°5. Here, we analyze GDIGS Hnα ionized gas emission toward discrete sources. Using GDIGS data, we identify the velocity of 35 H II regions that have multiple detected RRL velocity components. We identify and characterize RRL emission from 88 H II regions that previously lacked measured ionized gas velocities. We also identify and characterize RRL emission from eight locations that appear to be previously unidentified H II regions and 30 locations of RRL emission that do not appear to be H II regions based on their lack of mid-infrared emission. This latter group may be a compact component of the Galactic Diffuse Ionized Gas. There are an additional 10 discrete sources that have anomalously high RRL velocities for their locations in the Galactic plane. We compare these objects' RRL data to ¹³CO, H I, and mid-infrared data, and find that these sources do not have the expected 24 μm emission characteristic of H II regions. Based on this comparison we do not think these objects are H II regions, but we are unable to classify them as a known type of object. |
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| Date de publication | 2023-12-12 |
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| Maison d’édition | American Astronomical Society |
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| Licence | |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 7a849e72-837f-4bfd-bdbb-73f5176a2d66 |
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| Enregistrement créé | 2024-08-06 |
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| Enregistrement modifié | 2024-08-06 |
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