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Measurements of water surface snow lines in classical protoplanetary disks
Sandra M. Blevins, Klaus M. Pontoppidan, Andrea Banzatti +5
We present deep Herschel-PACS spectroscopy of far-infrared water lines from a sample of four protoplanetary disks around solar-mass stars, selected to have strong water emission at…
FUV Irradiated Disk Atmospheres: Ly and the Origin of Hot H Emission
Máté Ádámkovics, Joan R. Najita, Alfred E. Glassgold
Protoplanetary disks are strongly irradiated by a stellar FUV spectrum that is dominated by Ly photons. We investigate the impact of stellar Ly irradiation on the terrestrial…
Evolution of Mass Outflow in Protostars
Dan M. Watson, Nuria P. Calvet, William J. Fischer +9
We have surveyed 84 Class 0, Class I, and flat-spectrum protostars in mid-infrared [Si II], [Fe II] and [S I] line emission, and 11 of these in far-infrared [O I] emission. We use…
Photochemical Heating of Dense Molecular Gas
A. E. Glassgold, J. R. Najita
Photochemical heating is analyzed with emphasis on the heating generated by chemical reactions initiated by the products of photodissociation and photoionization. The immediate pro…
Thirty Meter Telescope International Observatory Detailed Science Case 2024
Warren Skidmore, Bob Kirshner, David Andersen +168
The Thirty Meter Telescope (TMT) International Observatory (TIO) will be a revolutionary leap forward in astronomical observing capabilities, enabling us to address some of the mos…
Demographics of Transition Discs in Ophiuchus and Taurus
Joan R. Najita, Sean M. Andrews, James Muzerolle
Transition disc systems are young stars that appear to be on the verge of dispersing their protoplanetary discs. We explore the nature of these systems by comparing the stellar acc…
Near Infrared High Resolution Spectroscopy and Spectro-astrometry of Gas in Disks around Herbig Ae/Be Stars
Sean D. Brittain, Joan R. Najita, John S. Carr
In this review, we describe how high resolution near infrared spectroscopy and spectro-astrometry have been used to study the disks around Herbig~Ae/Be stars. We show how these too…
Probing stellar accretion with mid-infrared hydrogen lines
Elisabetta Rigliaco, I. Pascucci, G. Duchene +12
In this paper we investigate the origin of the mid-infrared (IR) hydrogen recombination lines for a sample of 114 disks in different evolutionary stages (full, transitional and deb…