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ALMA Observations of a Gap and a Ring in the Protoplanetary Disk around TW Hya
Hideko Nomura, Takashi Tsukagoshi, Ryohei Kawabe +8
We report the first detection of a gap and a ring in 336 GHz dust continuum emission from the protoplanetary disk around TW Hya, using the Atacama Large Millimeter/Submillimeter Ar…
The molecular composition of the planet-forming regions of protoplanetary disks across the luminosity regime
Catherine Walsh, Hideko Nomura, Ewine F. van Dishoeck
(Abridged) Near- to mid-IR observations of protoplanetary disks show that the inner regions (<10AU) are rich in small organic volatiles (e.g., C2H2 and HCN). Trends in the data sug…
Resolving structure of the disk around HD100546 at 7 mm with ATCA
Christopher Wright, Sarah Maddison, David Wilner +7
There is much evidence that planet formation is occurring in the disk around the Herbig Be star HD100546. To learn more about the processes occurring in this disk we conducted high…
A low-mass protostar's disk-envelope interface: disk-shadowing evidence from ALMA DCO+ observations of VLA1623
Nadia M. Murillo, Simon Bruderer, Ewine F. van Dishoeck +4
Due to instrumental limitations and a lack of disk detections, the structure between the envelope and the rotationally supported disk has been poorly studied. This is now possible…
The complex chemistry of outflow cavity walls exposed: the case of low-mass protostars
Maria N. Drozdovskaya, Catherine Walsh, Ruud Visser +2
Complex organic molecules are ubiquitous companions of young low-mass protostars. Recent observations suggest that their emission stems, not only from the traditional hot corino, b…
Photodesorption of H2O, HDO, and D2O ice and its impact on fractionation
Carina Arasa, Jesper Koning, Geert-Jan Kroes +2
The HDO/H2O ratio in interstellar gas is often used to draw conclusions on the origin of water in star-forming regions and on Earth. In cold cores and in the outer regions of proto…