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Author
MacGregor, Meredith A.
Matra, Luca
Kalas, Paul
Wilner, D.

Pan, Margaret
Kennedy, Grant M.

Wyatt, Mark C.

Duchêne, Gaspard

Hughes, A. Meredith
Rieke, George H.

Clampin, Mark
Fitzgerald, Michael P.

Graham, James R.
Holland, Wayne S.
Panic, Olja
Shannon, Andrew

Su, Kate Y. L.

Affiliation
Univ Arizona, Steward ObservIssue Date
2017-06-07
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IOP PUBLISHING LTDCitation
A Complete ALMA Map of the Fomalhaut Debris Disk 2017, 842 (1):8 The Astrophysical JournalJournal
The Astrophysical JournalRights
© 2017. The American Astronomical Society. All rights reserved.Collection Information
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.Abstract
We present ALMA mosaic observations at 1.3. mm (223 GHz) of the Fomalhaut system with a sensitivity of 14 mu Jy/beam. These observations provide the first millimeter map of the continuum dust emission from the complete outer debris disk with uniform sensitivity, enabling the first conclusive detection of apocenter glow. We adopt an MCMC modeling approach that accounts for the eccentric orbital parameters of a collection of particles within the disk. The outer belt is radially confined with an inner edge of 136.3 +/- 0.9. au and width of 13.5 +/- 1.8. au. We determine a best-fit eccentricity of 0.12 +/- 0.01. Assuming a size distribution power-law index of q. =. 3.46 +/- 0.09, we constrain the dust absorptivity power-law index a to be 0.9ISSN
1538-4357Version
Final published versionSponsors
National Science Foundation Graduate Research Fellowship [DGE1144152]; NRAO Student Observing Support; STFC; European Union through ERC [279973]; NASA [NNX15AC89G, NNX15AD95G/NEXSS, NNX15AK23G, NNX15AM35G]; NSF [AST-1518332, HST-GO-13726, AST-1412647]; NASA's Science Mission Directorate; Royal Society as a Royal Society University Research Fellow; Royal Society Dorothy Hodgkin Fellowship; Center for Exoplanets and Habitable Worlds; Pennsylvania State University; Eberly College of Science; Pennsylvania Space Grant ConsortiumAdditional Links
http://stacks.iop.org/0004-637X/842/i=1/a=8?key=crossref.31ce09ed6c0ffdcbd64761e52703f12cae974a485f413a2113503eed53cd6c53
10.3847/1538-4357/aa71ae