288 citations · 2.9k across the 59 of their papers we have counts for
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Azimuthal C/O Variations in a Planet-Forming Disk
Luke Keyte, Mihkel Kama, Alice S. Booth +8
The elemental carbon-to-oxygen ratio (C/O) in the atmosphere of a giant planet is a promising diagnostic of that planet's formation history in a protoplanetary disk. Alongside effo…
Different degrees of nitrogen and carbon depletion in the warm molecular layers of protoplanetary disks
Kenji Furuya, Seokho Lee, Hideko Nomura
Observations have revealed that the elemental abundances of carbon and oxygen in the warm molecular layers of some protoplanetary disks are depleted compared to those is the inters…
Discovery of Line Pressure Broadening and Direct Constraint on Gas Surface Density in a Protoplanetary Disk
Tomohiro C. Yoshida, Hideko Nomura, Takashi Tsukagoshi +2
The gas surface density profile of protoplanetary disks is one of the most fundamental physical properties to understand planet formation. However, it is challenging to determine t…
A new method for direct measurement of isotopologue ratios in protoplanetary disks: a case study of the CO/CO ratio in the TW Hya disk
Tomohiro C. Yoshida, Hideko Nomura, Kenji Furuya +2
Planetary systems are thought to be born in protoplanetary disks. Isotope ratios are a powerful tool for investigating the material origin and evolution from molecular clouds to pl…
Detection of HC18O+ in a protoplanetary disk: exploring oxygen isotope fractionation of CO
Kenji Furuya, Takashi Tsukagoshi, Chunhua Qi +4
The oxygen isotope fractionation scenario, which has been developed to explain the oxygen isotope anomaly in the solar system materials, predicts that CO gas is depleted in 18O in…
Molecules with ALMA at Planet-forming Scales (MAPS) V: CO gas distributions
Ke Zhang, Alice S. Booth, Charles J. Law +32
Here we present high resolution (15-24 au) observations of CO isotopologue lines from the Molecules with ALMA on Planet-forming Scales (MAPS) ALMA Large Program. Our analysis emplo…
Molecules with ALMA at Planet-forming Scales (MAPS) I: Program Overview and Highlights
Karin I. Oberg, Viviana V. Guzman, Catherine Walsh +35
Planets form and obtain their compositions in dust and gas-rich disks around young stars, and the outcome of this process is intimately linked to the disk chemical properties. The…
Molecules with ALMA at Planet-forming Scales (MAPS). VII. Sub-stellar O/H and C/H and super-stellar C/O in planet feeding gas
Arthur D. Bosman, Felipe Alarcón, Edwin A. Bergin +28
The elemental composition of the gas and dust in a protoplanetary disk influences the compositions of the planets that form in it. We use the Molecules with ALMA at Planet-forming…
Molecules with ALMA at Planet-forming Scales (MAPS) III: Characteristics of Radial Chemical Substructures
Charles J. Law, Ryan A. Loomis, Richard Teague +32
The Molecules with ALMA at Planet-forming Scales (MAPS) Large Program provides a detailed, high resolution (10-20 au) view of molecular line emission in five protoplanetary…
Abundant refractory sulfur in protoplanetary disks
Mihkel Kama, Oliver Shorttle, Adam S. Jermyn +5
Sulfur is one of the most abundant elements in the Universe, with important roles in astro-, geo-, and biochemistry. Its main reservoirs in planet-forming disks have previously elu…
The Distribution and Excitation of CHCN in a Solar Nebula Analog
Ryan A. Loomis, L. Ilsedore Cleeves, Karin I. Öberg +5
Cometary studies suggest that the organic composition of the early Solar Nebula was rich in complex nitrile species such a CHCN. Recent ALMA detections in protoplanetary disks…
Cometary ices in forming protoplanetary disc midplanes
Maria N. Drozdovskaya, Catherine Walsh, Ewine F. van Dishoeck +5
Low-mass protostars are the extrasolar analogues of the natal Solar System. Sophisticated physicochemical models are used to simulate the formation of two protoplanetary discs from…
Reprocessing of Ices in Turbulent Protoplanetary Disks: Carbon and Nitrogen Chemistry
Kenji Furuya, Yuri Aikawa
We study the influence of the turbulent transport on ice chemistry in protoplanetary disks, focusing on carbon and nitrogen bearing molecules. Chemical rate equations are solved wi…