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Resolved Millimeter-wavelength Observations of Debris Disks around Solar-type Stars

Steele, Amy and Hughes, A. Meredith and Carpenter, John and Ricarte, Angelo and Andrews, Sean M. and Wilner, David J. and Chiang, Eugene (2016) Resolved Millimeter-wavelength Observations of Debris Disks around Solar-type Stars. Astrophysical Journal, 816 (1). Art. No. 27. ISSN 0004-637X.

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The presence of debris disks around young main-sequence stars hints at the existence and structure of planetary systems. Millimeter-wavelength observations probe large grains that trace the location of planetesimal belts. The Formation and Evolution of Planetary Systems Spitzer Legacy survey of nearby young solar analogues yielded a sample of five debris disk-hosting stars with millimeter flux suitable for interferometric follow-up. We present observations with the Submillimeter Array (SMA) and the Combined Array for Research in Millimeter-wave Astronomy at ~2'' resolution that spatially resolve the debris disks around these nearby (d ~ 50 pc) stars. Two of the five disks (HD 377, HD 8907) are spatially resolved for the first time and one (HD 104860) is resolved at millimeter wavelengths for the first time. We combine our new observations with archival SMA and Atacama Large Millimeter/Submillimeter Array data to enable a uniform analysis of the full five-object sample. We simultaneously model the broadband photometric data and resolved millimeter visibilities to constrain the dust temperatures and disk morphologies, and perform a Markov Chain Monte Carlo analysis to fit for basic structural parameters. We find that the radii and widths of the cold outer belts exhibit properties consistent with scaled-up versions of the Solar System's Kuiper Belt. All the disks exhibit characteristic grain sizes comparable to the blowout size, and all the resolved observations of emission from large dust grains are consistent with an axisymmetric dust distribution to within the uncertainties. These results are consistent with comparable studies carried out at infrared wavelengths.

Item Type:Article
Related URLs:
URLURL TypeDescription
Andrews, Sean M.0000-0003-2253-2270
Wilner, David J.0000-0003-1526-7587
Chiang, Eugene0000-0002-6246-2310
Additional Information:© 2016. The American Astronomical Society. Received 2015 April 18; accepted 2015 October 21; published 2015 December 29. The work of A.S. was supported by a Student Observing Support grant from the National Radio Astronomy Observatory. A.M.H. gratefully acknowledges support from NASA Origins of Solar Systems grant NNX13AI32G and NSF grant AST-1412647. Support for CARMA construction was derived from the Gordon and Betty Moore Foundation, the Kenneth T. and Eileen L. Norris Foundation, the James S. McDonnell Foundation, the Associates of the California Institute of Technology, the University of Chicago, the states of California, Illinois, and Maryland, and the National Science Foundation. CARMA development and operations were supported by the National Science Foundation under a cooperative agreement, and by the CARMA partner universities. This paper makes use of the following ALMA data: ADS/JAO.ALMA#2011.0.00470.S. ALMA is a partnership of ESO (representing its member states), NSF (USA), and NINS (Japan), together with NRC (Canada) and NSC and ASIAA (Taiwan), in cooperation with the Republic of Chile. The Joint ALMA Observatory is operated by ESO, AUI/NRAO and NAOJ. The research made use of Astropy, a community-developed core Python package for Astronomy (Astropy Collaboration et al. 2013).
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
National Radio Astronomy ObservatoryUNSPECIFIED
Gordon and Betty Moore FoundationUNSPECIFIED
Kenneth T. and Eileen L. Norris FoundationUNSPECIFIED
James S. McDonnell FoundationUNSPECIFIED
Associates of the California Institute of TechnologyUNSPECIFIED
University of ChicagoUNSPECIFIED
states of California, Illinois, and MarylandUNSPECIFIED
CARMA partner universitiesUNSPECIFIED
Subject Keywords:circumstellar matter; planetary systems; submillimeter: planetary systems
Issue or Number:1
Record Number:CaltechAUTHORS:20160204-153102192
Persistent URL:
Official Citation:Amy Steele et al 2016 ApJ 816 27
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:64248
Deposited By: George Porter
Deposited On:04 Feb 2016 23:49
Last Modified:09 Mar 2020 13:19

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