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Compact Disks: an explanation to faint CO emission in Lupus disks
Anna Miotello, Giovanni Rosotti, Megan Ansdell +4
A large fraction of observed protoplanetary disks in nearby Star-Forming Regions (SFRs) are fainter than expected in CO isotopologue emission. Disks not detected in 13CO line emiss…
Probing the protoplanetary disk gas surface density distribution with CO emission
Anna Miotello, Stefano Facchini, Ewine F. van Dishoeck +1
It is key to constrain the gas surface density distribution, Sigma_gas, as function of disk radius in protoplanetary disks. In this work we investigate if spatially resolved observ…
Probing midplane CO abundance and gas temperature with DCO in the protoplanetary disk around HD 169142
M. T. Carney, D. Fedele, M. R. Hogerheijde +8
This work aims to understand which midplane conditions are probed by the DCO emission in the disk around the Herbig Ae star HD 169142. We explore the sensitivity of the DCO…
The extremely truncated circumstellar disc of V410 X-ray 1: a precursor to TRAPPIST-1?
D. M. Boneberg, S. Facchini, C. J. Clarke +3
Protoplanetary discs around brown dwarfs and very low mass stars offer some of the best prospects for forming Earth-sized planets in their habitable zones. To this end, we study th…
Nitrogen isotope fractionation in protoplanetary disks
Ruud Visser, Simon Bruderer, Paolo Cazzoletti +3
Aims: The two stable isotopes of nitrogen, 14N and 15N, exhibit a range of abundance ratios both inside and outside the solar system. The elemental ratio in the solar neighborhood…
Different dust and gas radial extents in protoplanetary disks: consistent models of grain growth and CO emission
Stefano Facchini, Til Birnstiel, Simon Bruderer +1
ALMA observations of protoplanetary disks confirm earlier indications that there is a clear difference between the dust and gas radial extents. The origin of this difference is sti…