protoplanetary disk
Cometary compositions compared with protoplanetary disk midplane chemical evolution. An emerging chemical evolution taxonomy for comets
... Acknowledgements. This work was motivated by discussions at the International Space Science Institute in Bern during meetings of International Team 361, “From Qualitative to Quantitative: Exploring the Early solar system ...
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Upper limits on CH3OH in the HD 163296 protoplanetary disk - Evidence for a low gas-phase CH3OH-to-H2CO ratio
... in protoplanetary disks, in particular for ...bright protoplanetary disk containing a significant reser- voir of gas that extends out to ∼ 550 AU in the gas based on CO measurements (de ...
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Effect of lift force on the aerodynamics of dust grains in the protoplanetary disk
... In this paper, we investigated the effects of the lift force on dust grains in a protoplanetary disk from two perspec- tives. We first investigated whether the lift force is kept exerted on the grains or ...
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Planetesimal formation by an axisymmetric radial bump of the column density of the gas in a protoplanetary disk
... A hypothetical small solid body with a radius 1 km formed in a protoplanetary disk is called a planetesimal. Planetesimals grow by collisional coagulation owing to mutual gravity (Wetherill and Stewart ...
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Far-infrared HD emission as a measure of protoplanetary disk mass
... the disk vertical struc- ture on the uncertainty of the HD based mass estimates is dis- cussed in ...the protoplanetary disk of TW Hya ...Hya disk seems genuinely depleted in volatile carbon ...
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The First Detection of ^13C^17O in a Protoplanetary Disk: A Robust Tracer of Disk Gas Mass
... determine disk gas masses; however, if the line emission is optically thick this will result in an underestimated disk ...a protoplanetary disk for the first ...
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Cometary compositions compared with protoplanetary disk midplane chemical evolution: An emerging chemical evolution taxonomy for come
... Studies of comets and cometary compositions so far have been grouping them by either dynamical characteristics (length of orbit or inclination), or by their molecular contents (see Cochran et al. 2012). A’Hearn et al. ...
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The First Detection of ¹³C¹⁷O in a Protoplanetary Disk: A Robust Tracer of Disk Gas Mass
... The protoplanetary disk around HD163296 has been well characterized with the Atacama Large Millimeter/submilli- meter Array ...this disk inferred from the dust and gas rings, and deviations from ...
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High resolution Millimeter Imaging of the CI Tau protoplanetary disk : a massive ensemble of protoplanets from 0 1 to 100 au
... the disk surrounding the young star CI Tau, a system hosting the fi rst hot Jupiter candidate in a protoplanetary disk ...Tau protoplanetary disk; in CI Tau, additional observational ...
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First Detection of Gas-phase Methanol in a Protoplanetary Disk
... a protoplanetary disk ( TW Hya ) is ...rst disk organic molecule with an unambiguous ice chemistry ...appropriate disk model, a fractional abundance of 3 ´ 10 - 12 – 4 ´ 10 - 11 ( with respect ...
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CO destruction in protoplanetary disk midplanes: Inside versus outside the CO snow surface
... influences protoplanetary disk evolution and planet for- ...gaseous disk leads to migration of the planet and gap formation (see, ...the disk, which is read- ily detectable at sub-millimeter ...
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Molecular Line Emission from a Protoplanetary Disk Irradiated Externally by a Nearby Massive Star
... star’s protoplanetary disk can be heavily irradiated and indeed, photoevaporated, by nearby massive stars (see, ...pc. Protoplanetary disks are the sites of planet formation and the study of disks in ...
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CO destruction in protoplanetary disk midplanes: Inside versus outside the CO snow surface
... influences protoplanetary disk evolution and planet forma- ...gaseous disk leads to mi- gration of the planet and gap formation (see, ...the disk, which is readily detectable at sub-millimeter ...
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The puzzle of protoplanetary disk masses
... the disk gas mass is examined. In addition, the effect of other disk properties such as the vertical structure and the dust distribution on the HD emission is ...the disk vertical structure on the ...
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Hubble Space Telescope Scattered-light Imaging and Modeling of the Edge-on Protoplanetary Disk ESO-Hα 569
... edge-on protoplanetary disk around ESO-H α 569 ( a low-mass T Tauri star in the Cha I star-forming region ) ...the disk ( inclination, scale height, dust mass, fl aring exponent, and surface / volume ...
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Probing midplane CO abundance and gas temperature with DCO+ in the protoplanetary disk around HD 169142
... Fig. 5. Parameterized modifications to the optimized DALI model described in Appendix A. Right and right-middle plots: gas tempera- ture and CO abundance, respectively. The black dashed box shows the modified region. ...
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Polycyclic aromatic hydrocarbon ionization as a tracer of gas flows through protoplanetary disk gaps
... the disk structures of HD 97048, HD 169142, HD 135344 B, and Oph IRS 48 derived by Maaskant et ...the disk. For HD 97048, this inner disk is optically thick, is in hydrostatic equilibrium and is ...
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Upper limits on CH_3OH in the HD 163296 protoplanetary disk. Evidence for a low gas-phase CH_3OH-to-H_2CO ratio
... the disk midplane (Dullemond & Dominik 2004; D’Alessio et ...Hya disk was ob- served with ALMA in the band 6 continuum at 850 µm and with VLT / SPHERE in H−band at ...163296 disk show that no ...
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Dust Continuum Emission and the Upper Limit Fluxes of Submillimeter Water Lines of the Protoplanetary Disk around HD 163296 Observed by ALMA
... the disk (inside 40 au) and smaller grains, consistent with ISM sizes, in the outer disk (beyond 125 au), which would suggest a grain size distribution con- sistent with an enhanced production of large ...
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Evidence for a massive dust-trapping vortex connected to spirals: Multi-wavelength analysis of the HD 135344B protoplanetary disk
... The new ALMA data of the disk around HD 135344B presented in this paper are part of three di ff erent projects. The Band 4 data have been observed in C40-8 configuration during ALMA Cycle 4 in two execution blocks ...
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