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Rotationally-supported disks around Class I sources in Taurus: disk formation constraints
Daniel Harsono, Jes K. Jorgensen, Ewine F. van Dishoeck +4
(Abridged) Disks are observed around pre-main sequence stars, but how and when they form is still heavily debated. While disks around young stellar objects have been identified thr…
A recent accretion burst in the low-mass protostar IRAS 15398-3359: ALMA imaging of its related chemistry
Jes K. Jorgensen, Ruud Visser, Nami Sakai +8
Low-mass protostars have been suggested to show highly variable accretion rates through-out their evolution. Such changes in accretion, and related heating of their ambient envelop…
A Keplerian disk around a Class 0 source: ALMA observations of VLA1623A
Nadia M. Murillo, Shih-Ping Lai, Simon Bruderer +2
Context: Rotationally supported disks are critical in the star formation process. The questions of when do they form and what factors influence or hinder their formation have been…
ALMA imaging of the CO snowline of the HD 163296 disk with DCO+
G. S. Mathews, P. D. Klaassen, A. Juhasz +11
The high spatial and line sensitivity of ALMA opens the possibility of resolving emission from molecules in circumstellar disks. With an understanding of physical conditions under…
High-J CO survey of low-mass protostars observed with Herschel-HIFI
Umut A. Yıldız, Lars E. Kristensen, Ewine F. van Dishoeck +8
The evolution of deeply embedded young stellar objects (YSOs) has traditionally been traced through dust continuum spectral energy distributions (SEDs), but the use of CO excitatio…
Evolution of CO lines in time-dependent models of protostellar disk formation
Daniel Harsono, Ruud Visser, Simon Bruderer +2
(Abridged) Star and planet formation theories predict an evolution in the density, temperature, and velocity structure as the envelope collapses and forms an accretion disk. The ai…