%0 Generic %1 citeulike:13558404 %A Rapson, Valerie A. %A Kastner, Joel H. %A Andrews, Sean M. %A Hines, Dean C. %A Macintosh, Bruce %A Millar-Blanchaer, Max %A Tamura, Motohide %D 2015 %K imported %T Scattered Light from Dust in the Cavity of the V4046 Sgr Transition Disk %U http://arxiv.org/abs/1503.06192 %X We report the presence of scattered light from dust grains located in the giant planet formation region of the circumbinary disk orbiting the \~20-Myr-old close (\~0.045 AU separation) binary system V4046 Sgr AB based on observations with the new Gemini Planet Imager (GPI) instrument. These GPI images probe to within \~7 AU of the central binary with linear spatial resolution of \~3 AU, and are thereby capable of revealing dust disk structure within a region corresponding to the giant planets in our solar system. The GPI imaging reveals a relatively narrow (FWHM \~10 AU) ring of polarized near-infrared flux whose brightness peaks at \~14 AU. This \~14 AU radius ring is surrounded by a fainter outer halo of scattered light extending to \~45 AU, which coincides with previously detected mm-wave thermal dust emission. The presence of small grains that efficiently scatter starlight well inside the mm-wavelength disk cavity supports current models of planet formation that suggest planet-disk interactions can generate pressure traps that impose strong radial variations in the particle size distribution throughout the disk.

@misc{citeulike:13558404, abstract = {{We report the presence of scattered light from dust grains located in the giant planet formation region of the circumbinary disk orbiting the \~{}20-Myr-old close (\~{}0.045 AU separation) binary system V4046 Sgr AB based on observations with the new Gemini Planet Imager (GPI) instrument. These GPI images probe to within \~{}7 AU of the central binary with linear spatial resolution of \~{}3 AU, and are thereby capable of revealing dust disk structure within a region corresponding to the giant planets in our solar system. The GPI imaging reveals a relatively narrow (FWHM \~{}10 AU) ring of polarized near-infrared flux whose brightness peaks at \~{}14 AU. This \~{}14 AU radius ring is surrounded by a fainter outer halo of scattered light extending to \~{}45 AU, which coincides with previously detected mm-wave thermal dust emission. The presence of small grains that efficiently scatter starlight well inside the mm-wavelength disk cavity supports current models of planet formation that suggest planet-disk interactions can generate pressure traps that impose strong radial variations in the particle size distribution throughout the disk.}}, added-at = {2019-03-25T08:20:55.000+0100}, archiveprefix = {arXiv}, author = {Rapson, Valerie A. and Kastner, Joel H. and Andrews, Sean M. and Hines, Dean C. and Macintosh, Bruce and Millar-Blanchaer, Max and Tamura, Motohide}, biburl = {https://www.bibsonomy.org/bibtex/2598f97e42b2f6d2af480d5be07563c39/ericblackman}, citeulike-article-id = {13558404}, citeulike-linkout-0 = {http://arxiv.org/abs/1503.06192}, citeulike-linkout-1 = {http://arxiv.org/pdf/1503.06192}, day = 20, eprint = {1503.06192}, interhash = {3a0e8b10e78945d4f2a7aca50b1aeae7}, intrahash = {598f97e42b2f6d2af480d5be07563c39}, keywords = {imported}, month = mar, posted-at = {2015-03-23 05:55:33}, priority = {2}, timestamp = {2019-03-25T08:20:55.000+0100}, title = {{Scattered Light from Dust in the Cavity of the V4046 Sgr Transition Disk}}, url = {http://arxiv.org/abs/1503.06192}, year = 2015 }