The MESAS Project: Long-wavelength Follow-up Observations of Sirius A

Jacob Aaron White, J. Aufdenberg, A. C. Boley, M. Devlin, S. Dicker, P. Hauschildt, A. G. Hughes, A. M. Hughes, B. Mason, B. Matthews, A. Moór, T. Mroczkowski, C. Romero, J. Sievers, S. Stanchfield, F. Tapia, D. Wilner

Research output: Article

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.

Original languageEnglish
Article number55
JournalAstrophysical Journal
Volume875
Issue number1
DOIs
Publication statusPublished - ápr. 10 2019

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wavelength
stellar atmospheres
wavelengths
atmosphere
stars
Very Large Array (VLA)
debris
complement
modeling
project
telescopes
measuring

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

White, J. A., Aufdenberg, J., Boley, A. C., Devlin, M., Dicker, S., Hauschildt, P., ... Wilner, D. (2019). The MESAS Project: Long-wavelength Follow-up Observations of Sirius A. Astrophysical Journal, 875(1), [55]. https://doi.org/10.3847/1538-4357/ab0e7f

The MESAS Project : Long-wavelength Follow-up Observations of Sirius A. / White, Jacob Aaron; Aufdenberg, J.; Boley, A. C.; Devlin, M.; Dicker, S.; Hauschildt, P.; Hughes, A. G.; Hughes, A. M.; Mason, B.; Matthews, B.; Moór, A.; Mroczkowski, T.; Romero, C.; Sievers, J.; Stanchfield, S.; Tapia, F.; Wilner, D.

In: Astrophysical Journal, Vol. 875, No. 1, 55, 10.04.2019.

Research output: Article

White, JA, Aufdenberg, J, Boley, AC, Devlin, M, Dicker, S, Hauschildt, P, Hughes, AG, Hughes, AM, Mason, B, Matthews, B, Moór, A, Mroczkowski, T, Romero, C, Sievers, J, Stanchfield, S, Tapia, F & Wilner, D 2019, 'The MESAS Project: Long-wavelength Follow-up Observations of Sirius A', Astrophysical Journal, vol. 875, no. 1, 55. https://doi.org/10.3847/1538-4357/ab0e7f
White JA, Aufdenberg J, Boley AC, Devlin M, Dicker S, Hauschildt P et al. The MESAS Project: Long-wavelength Follow-up Observations of Sirius A. Astrophysical Journal. 2019 ápr. 10;875(1). 55. https://doi.org/10.3847/1538-4357/ab0e7f
White, Jacob Aaron ; Aufdenberg, J. ; Boley, A. C. ; Devlin, M. ; Dicker, S. ; Hauschildt, P. ; Hughes, A. G. ; Hughes, A. M. ; Mason, B. ; Matthews, B. ; Moór, A. ; Mroczkowski, T. ; Romero, C. ; Sievers, J. ; Stanchfield, S. ; Tapia, F. ; Wilner, D. / The MESAS Project : Long-wavelength Follow-up Observations of Sirius A. In: Astrophysical Journal. 2019 ; Vol. 875, No. 1.
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