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11 papers · 2 filters
Mass constraints for 15 protoplanetary disks from HD 1-0
M. Kama, L. Trapman, D. Fedele +6
Hydrogen deuteride (HD) rotational line emission can provide reliable protoplanetary disk gas mass measurements, but it is difficult to observe and detections have been limited to…
Meridional flows in the disk around a young star
Richard Teague, Jaehan Bae, Edwin Bergin
Protoplanetary disks are known to posses a stunning variety of substructure in the distribution of their mm~sized grains, predominantly seen as rings and gaps (Andrews et al. 2018)…
Spiral Structure in the Gas Disk of TW Hya
Richard Teague, Jaehan Bae, Jane Huang +1
We report the detection of spiral substructure in both the gas velocity and temperature structure of the disk around TW~Hya, suggestive of planet-disk interactions with an unseen p…
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…
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks
Ke Zhang, Edwin A. Bergin, Kamber R. Schwarz +2
CO is the most widely used gas tracer of protoplanetary disks. Its abundance is usually assumed to be an interstellar ratio throughout the warm molecular layer of the disk. But rec…
Unlocking CO Depletion in Protoplanetary Disks II. Primordial C/H Predictions Inside the CO Snowline
Kamber R. Schwarz, Edwin A. Bergin, L. Ilsedore Cleeves +4
CO is thought to be the main reservoir of volatile carbon in protoplanetary disks, and thus the primary initial source of carbon in the atmospheres of forming giant planets. Howeve…