Results 131 to 140 of about 425,590 (288)

GoFish: Fishing for Line Observations in Protoplanetary Disks

Journal of Open Source Software, 2019
Molecular line observations are an essential complement to high resolution continuum data when studying the planet formation environment, the protoplanetary disk.
R. Teague
semanticscholar   +1 more source

Differences in elemental abundances between CI chondrites and the solar photosphere

Meteoritics &Planetary Science, Volume 59, Issue 12, Page 3193-3214, December 2024.
Abstract CI chondrites have been a proxy for the solar system since the mid‐20th century. The photospheric and CI chondrite abundances (P and CI, respectively) show a strong correlation. CI as a proxy is also justified by the (i) smoothness of their abundances plotted as a function of odd mass number and (ii) agreement within the error of P as ...
A. J. G. Jurewicz, A. M. Amarsi, D. S. Burnett, N. Grevesse   +3 more
wiley   +1 more source

On Kinematic Measurements of Self-gravity in Protoplanetary Disks

The Astrophysical Journal
Using controlled injection and recovery experiments, we devised an analysis prescription to assess the quality of dynamical measurements of protoplanetary disk gas masses based on resolved (CO) spectral line data, given observational limitations ...
Sean M. Andrews, Richard Teague, Christopher P. Wirth, Jane Huang, Zhaohuan Zhu   +4 more
doaj   +1 more source

Empirical Temperature Measurement in Protoplanetary Disks [PDF]

, 2018
The accurate measurement of temperature in protoplanetary disks is critical to understanding many key features of disk evolution and planet formation, from disk chemistry and dynamics, to planetesimal formation.
E. Weaver, A. Isella, Y. Boehler
semanticscholar   +1 more source

The Determination of Protoplanetary Disk Masses [PDF]

, 2017
In this article we review the methods used to determine the gas and dust masses of protoplanetary disks, with an emphasis on the lesser characterized total gas mass. Our review encompasses all the indirect tracers and the methodology that is be used to isolate the hidden H2 via dust, CO, and HD emission.
Jonathan P. Williams, Edwin A. Bergin
openaire   +3 more sources

Radial transport and nebular thermal processing of millimeter‐sized solids in the Solar protoplanetary disk inferred from Cr‐Ti‐O isotope systematics of chondrules

Meteoritics &Planetary Science, Volume 59, Issue 12, Page 3282-3304, December 2024.
Abstract Understanding the material transport and mixing processes in the Solar protoplanetary disk provides important constraints on the origin of chemical and isotopic diversities of our planets. The limited extent of radial transport and mixing between the inner and outer Solar System has been suggested based on a fundamental isotopic dichotomy ...
Kohei Fukuda, Yuki Hibiya, Craig R. Kastelle, Katsuhiko Suzuki, Tsuyoshi Iizuka, Katsuyuki Yamashita, Thomas E. Helser, Noriko T. Kita   +7 more
wiley   +1 more source

The Carbon Isotopic Ratio and Planet Formation

The Astrophysical Journal
We present the first detection of ^13 CCH in a protoplanetary disk (TW Hya). Using observations of C _2 H, we measure CCH/ ^13 CCH = 65 ± 20 gas with a CO isotopic ratio of ^12 CO/ ^13 CO = 21 ± 5.
Edwin A. Bergin, Arthur Bosman, Richard Teague, Jenny Calahan, Karen Willacy, L. Ilsedore Cleeves, Kamber Schwarz, Ke Zhang, Simon Bruderer   +8 more
doaj   +1 more source

The Formation of Protoplanetary Disks through Pre-Main Sequence Bondi-Hoyle Accretion [PDF]

Protoplanetary disks are traditionally described as finite mass reservoirs left over by the gravitational collapse of the protostellar core, a view that strongly constrains both disk evolution and planet formation models. We propose a different scenario where protoplanetary disks of pre-main sequence stars are primarily assembled by Bondi-Hoyle ...
arxiv   +1 more source

Protoplanetary Disk Heating and Evolution Driven by the Spiral Density Waves [PDF]

, 2016
High-resolution imaging of some protoplanetary disks in scattered light reveals presence of the global spiral arms of significant amplitude, likely excited by massive planets or stellar companions. Assuming that these arms are density waves, evolving into spiral shocks, we assess their effect on the thermodynamics, accretion, and global evolution of ...
arxiv   +1 more source

Volatile carbon locking and release in protoplanetary disks. A study of TW Hya and HD 100546 [PDF]

, 2016
The composition of planetary solids and gases is largely rooted in the processing of volatile elements in protoplanetary disks. To shed light on the key processes, we carry out a comparative analysis of the gas-phase carbon abundance in two systems with ...
M. Kama, S. Bruderer, E. Dishoeck, M. Hogerheijde, C. Folsom, C. Folsom, A. Miotello, D. Fedele, A. Belloche, R. Güsten, F. Wyrowski   +10 more
semanticscholar   +1 more source