| DOI | Resolve DOI: https://doi.org/10.3847/1538-4357/ab0e7f |
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| Author | Search for: White, Jacob AaronORCID identifier: https://orcid.org/0000-0001-8445-0444; Search for: Aufdenberg, J.; Search for: Boley, A. C.ORCID identifier: https://orcid.org/0000-0002-0574-4418; Search for: Devlin, M.; Search for: Dicker, S.; Search for: Hauschildt, P.; Search for: Hughes, A. G.; Search for: Hughes, A. M.; Search for: Mason, B.; Search for: Matthews, B.1ORCID identifier: https://orcid.org/0000-0003-3017-9577; Search for: Moór, A.; Search for: Mroczkowski, T.ORCID identifier: https://orcid.org/0000-0003-3816-5372; Search for: Romero, C.ORCID identifier: https://orcid.org/0000-0001-5725-0359; Search for: Sievers, J.; Search for: Stanchfield, S.; Search for: Tapia, F.; Search for: Wilner, D. |
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| Affiliation | - National Research Council Canada. Herzberg Astronomy and Astrophysics
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| Format | Text, Article |
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| Subject | circumstellar matter; radio continuum: stars; stars: atmospheres; stars: individual (Sirius A); submillimeter: stars |
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| Abstract | Modeling the submillimeter to centimeter emission of stars is challenging due to a lack of sensitive observations at these long wavelengths. We launched an ongoing campaign to obtain new observations entitled Measuring the Emission of Stellar Atmospheres at Submillimeter/millimeter wavelengths (MESAS). Here we present Atacama Large Millimeter/submillimeter Array, Green Bank Telescope, and Very Large Array observations of Sirius A, the closest main-sequence A-type star, that span from 1.4 to 9.0 mm. These observations complement our previous millimeter data on Sirius A and are entirely consistent with the PHOENIX stellar atmosphere models constructed to explain them. We note that accurate models of long-wavelength emission from stars are essential not only to understand fundamental stellar processes, but also to determine the presence of dusty debris in spatially unresolved observations of circumstellar disks. |
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| Publication date | 2019-04-16 |
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| Publisher | IOP |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | f15e2db3-4707-45f3-b4a8-303919ac9418 |
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| Record created | 2021-08-31 |
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| Record modified | 2021-08-31 |
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