RESOLVED IMAGES OF LARGE CAVITIES IN PROTOPLANETARY TRANSITION DISKS

Andrews, Sean M; Wilner, David J; Espaillat, Catherine; Chunhua, Qi; Brown, J M; Hughes, A M; Dullemond, C P; McClure, M K

doi:10.1088/0004-637X/732/1/42

Title: RESOLVED IMAGES OF LARGE CAVITIES IN PROTOPLANETARY TRANSITION DISKS

Full Record
Other Related Research

Abstract

Circumstellar disks are thought to experience a rapid 'transition' phase in their evolution that can have a considerable impact on the formation and early development of planetary systems. We present new and archival high angular resolution (0.''3 {approx} 40-75 AU) Submillimeter Array (SMA) observations of the 880 {mu}m (340 GHz) dust continuum emission from 12 such transition disks in nearby star-forming regions. In each case, we directly resolve a dust-depleted disk cavity around the central star. Using two-dimensional Monte Carlo radiative transfer calculations, we interpret these dust disk structures in a homogeneous, parametric model framework by reproducing their SMA continuum visibilities and spectral energy distributions. The cavities in these disks are large (R{sub cav} = 15-73 AU) and substantially depleted of small ({approx}{mu}m-sized) dust grains, although their mass contents are still uncertain. The structures of the remnant material at larger radii are comparable to normal disks. We demonstrate that these large cavities are relatively common among the millimeter-bright disk population, comprising at least 1 in 5 (20%) of the disks in the bright half (and {>=}26% of the upper quartile) of the millimeter luminosity (disk mass) distribution. Utilizing these results, we assess some of the physical mechanisms proposed to accountmore »« less

Authors:

Andrews, Sean M; Wilner, David J; Espaillat, Catherine; Chunhua, Qi; Brown, J M ^[1]; Hughes, A M ^[2]; Dullemond, C P ^[3]; McClure, M K ^[4]

Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States)
Department of Astronomy, University of California at Berkeley, 601 Campbell Hall, Berkeley, CA 94720 (United States)
Institut fuer Theoretische Astrophysik, Universitaet Heidelberg, Albert-Ueberle-Str. 2, Heidelberg 69120 (Germany)
Department of Astronomy, University of Michigan, 830 Dennison Bldg, 500 Church Street, Ann Arbor, MI 48109 (United States)

Publication Date:: Sun May 01 00:00:00 EDT 2011

OSTI Identifier:: 21574641

Resource Type:: Journal Article

Journal Name:: Astrophysical Journal

Additional Journal Information:: Journal Volume: 732; Journal Issue: 1; Other Information: DOI: 10.1088/0004-637X/732/1/42; Journal ID: ISSN 0004-637X

Country of Publication:: United States

Language:: English

Subject:: 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; CAVITIES; DUSTS; EMISSION; ENERGY SPECTRA; MONTE CARLO METHOD; PROTOPLANETS; RADIANT HEAT TRANSFER; STARS; CALCULATION METHODS; ENERGY TRANSFER; HEAT TRANSFER; SPECTRA

Citation Formats


                    Andrews, Sean M, Wilner, David J, Espaillat, Catherine, Chunhua, Qi, Brown, J M, Hughes, A M, Dullemond, C P, and McClure, M K. RESOLVED IMAGES OF LARGE CAVITIES IN PROTOPLANETARY TRANSITION DISKS.  United States: N. p., 2011. 
        Web.  doi:10.1088/0004-637X/732/1/42.

Copy to clipboard


                    Andrews, Sean M, Wilner, David J, Espaillat, Catherine, Chunhua, Qi, Brown, J M, Hughes, A M, Dullemond, C P, & McClure, M K. RESOLVED IMAGES OF LARGE CAVITIES IN PROTOPLANETARY TRANSITION DISKS.  United States.  https://doi.org/10.1088/0004-637X/732/1/42

Copy to clipboard


                    Andrews, Sean M, Wilner, David J, Espaillat, Catherine, Chunhua, Qi, Brown, J M, Hughes, A M, Dullemond, C P, and McClure, M K. 2011.  
        "RESOLVED IMAGES OF LARGE CAVITIES IN PROTOPLANETARY TRANSITION DISKS".  United States.  https://doi.org/10.1088/0004-637X/732/1/42.

Copy to clipboard


                    
@article{osti_21574641,

  title        = {RESOLVED IMAGES OF LARGE CAVITIES IN PROTOPLANETARY TRANSITION DISKS},

  author       = {Andrews, Sean M and Wilner, David J and Espaillat, Catherine and Chunhua, Qi and Brown, J M and Hughes, A M and Dullemond, C P and McClure, M K},

  abstractNote = {Circumstellar disks are thought to experience a rapid 'transition' phase in their evolution that can have a considerable impact on the formation and early development of planetary systems. We present new and archival high angular resolution (0.''3 {approx} 40-75 AU) Submillimeter Array (SMA) observations of the 880 {mu}m (340 GHz) dust continuum emission from 12 such transition disks in nearby star-forming regions. In each case, we directly resolve a dust-depleted disk cavity around the central star. Using two-dimensional Monte Carlo radiative transfer calculations, we interpret these dust disk structures in a homogeneous, parametric model framework by reproducing their SMA continuum visibilities and spectral energy distributions. The cavities in these disks are large (R{sub cav} = 15-73 AU) and substantially depleted of small ({approx}{mu}m-sized) dust grains, although their mass contents are still uncertain. The structures of the remnant material at larger radii are comparable to normal disks. We demonstrate that these large cavities are relatively common among the millimeter-bright disk population, comprising at least 1 in 5 (20%) of the disks in the bright half (and {>=}26% of the upper quartile) of the millimeter luminosity (disk mass) distribution. Utilizing these results, we assess some of the physical mechanisms proposed to account for transition disk structures. As has been shown before, photoevaporation models do not produce the large cavity sizes, accretion rates, and disk masses representative of this sample. A sufficient decrease of the dust optical depths in these cavities by particle growth would be difficult to achieve: substantial growth (to meter sizes or beyond) must occur in large (tens of AU) regions of low turbulence without also producing an abundance of small particles. Given those challenges, we suggest instead that the observations are most commensurate with dynamical clearing due to tidal interactions with low-mass companions-very young ({approx}1 Myr) brown dwarfs or giant planets on long-period orbits.},

  doi          = {10.1088/0004-637X/732/1/42},

  url          = {https://www.osti.gov/biblio/21574641},
  journal      = {Astrophysical Journal},

  issn         = {0004-637X},

  number       = 1,

  volume       = 732,

  place        = {United States},

  year         = {Sun May 01 00:00:00 EDT 2011},

  month        = {Sun May 01 00:00:00 EDT 2011}

}

Copy to clipboard

Journal Article:

https://doi.org/10.1088/0004-637X/732/1/42

Other availability

Find in Google Scholar

Search WorldCat to find libraries that may hold this journal

Save / Share:

Export Metadata

Save to My Library

Similar records in OSTI.GOV collections:

THE STRUCTURE OF PRE-TRANSITIONAL PROTOPLANETARY DISKS. II. AZIMUTHAL ASYMMETRIES, DIFFERENT RADIAL DISTRIBUTIONS OF LARGE AND SMALL DUST GRAINS IN PDS 70 {sup ,}

Journal Article Hashimoto, J.; Wisniewski, J.; Tsukagoshi, T.; ... - Astrophysical Journal

The formation scenario of a gapped disk, i.e., transitional disk, and its asymmetry is still under debate. Proposed scenarios such as disk-planet interaction, photoevaporation, grain growth, anticyclonic vortex, eccentricity, and their combinations would result in different radial distributions of the gas and the small (sub-μm size) and large (millimeter size) dust grains as well as asymmetric structures in a disk. Optical/near-infrared (NIR) imaging observations and (sub-)millimeter interferometry can trace small and large dust grains, respectively; therefore multi-wavelength observations could help elucidate the origin of complicated structures of a disk. Here we report Submillimeter Array observations of the dust continuum atmore »« less
https://doi.org/10.1088/0004-637X/799/1/43
SUBMILLIMETER ARRAY OBSERVATIONS OF THE RX J1633.9-2442 TRANSITION DISK: EVIDENCE FOR MULTIPLE PLANETS IN THE MAKING

Journal Article Cieza, Lucas; Mathews, Geoffrey; Williams, Jonathan; ... - Astrophysical Journal

We present continuum high-resolution Submillimeter Array (SMA) observations of the transition disk object RX J1633.9-2442, which is located in the Ophiuchus molecular cloud and has recently been identified as a likely site of ongoing giant planet formation. The observations were taken at 340 GHz (880 {mu}m) with the SMA in its most extended configuration, resulting in an angular resolution of 0.''3 (35 AU at the distance of the target). We find that the disk is highly inclined (i {approx} 50 Degree-Sign ) and has an inner cavity {approx}25 AU in radius, which is clearly resolved by our observations. We simultaneouslymore »« less
https://doi.org/10.1088/0004-637X/752/1/75
MATRYOSHKA HOLES: NESTED EMISSION RINGS IN THE TRANSITIONAL DISK OPH IRS 48

Journal Article Brown, J; Rosenfeld, K; Andrews, S; ... - Astrophysical Journal Letters

The processes that form transition disks-disks with depleted inner regions-are not well understood; possible scenarios include planet formation, grain growth, and photoevaporation. Disks with spatially resolved dust holes are rare, but, in general, even less is known about the gas structure. The disk surrounding the A0 star Oph IRS 48 in the nearby {rho} Ophiuchus region has a 30 AU radius hole previously detected in the 18.7 {mu}m dust continuum and in warm CO in the 5 {mu}m fundamental rovibrational band. We present here Submillimeter Array 880 {mu}m continuum imaging resolving an inner hole. However, the radius of the holemore »« less
https://doi.org/10.1088/2041-8205/758/2/L30
A SUBMILLIMETER ARRAY SURVEY OF PROTOPLANETARY DISKS IN THE ORION NEBULA CLUSTER

Journal Article Mann, Rita - Astrophysical Journal

We present the full results of our three-year-long Submillimeter Array (SMA) survey of protoplanetary disks in the Orion Nebula Cluster. We imaged 23 fields at 880 {mu}m and 2 fields at 1330 {mu}m, covering an area of {approx}6.5 arcmin{sup 2} and containing 67 disks. We detected 42 disks with fluxes between 6 and 135 mJy and at rms noise levels between 0.6 and 5.3 mJy beam{sup -1}. Thermal dust emission above any free-free component was measured in 40 of the 42 detections, and the inferred disk masses range from 0.003 to 0.07 M{sub sun}. We find that disks located withinmore »« less
https://doi.org/10.1088/0004-637X/725/1/430
PROTOPLANETARY DISK MASSES FROM STARS TO BROWN DWARFS

Journal Article Mohanty, Subhanjoy; Mortlock, Daniel; Greaves, Jane; ... - Astrophysical Journal

We present SCUBA-2 850 {mu}m observations of seven very low mass stars (VLMS) and brown dwarfs (BDs). Three are in Taurus and four in the TW Hydrae Association (TWA), and all are classical T Tauri (cTT) analogs. We detect two of the three Taurus disks (one only marginally), but none of the TWA ones. For standard grains in cTT disks, our 3{sigma} limits correspond to a dust mass of 1.2 M{sub Circled-Plus} in Taurus and a mere 0.2 M{sub Circled-Plus} in the TWA (3-10 Multiplication-Sign deeper than previous work). We combine our data with other submillimeter/millimeter (sub-mm/mm) surveys of Taurus,more »« less
https://doi.org/10.1088/0004-637X/773/2/168

Similar Records