Tracing planet-induced structures in circumstellar disks using molecular lines
Tracing planet-induced structures in circumstellar disks using molecular lines
复制标题
使用分子线追踪星周盘中行星引起的结构
DOI:
10.1051/0004-6361/201526117
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发表时间:
2015
期刊:
影响因子:
--
通讯作者:
H.H. Klahr
中科院分区:
文献类型:
--
作者:
F. Ober;S. Wolf;A.L. Uribe;H.H. Klahr
ContextCircumstellar disks are considered to be the birthplace of planets. Specific structures like spiral arms, gaps, and cavities are characteristic indicators of planet-disk interaction. Investigating these structures can provide insights into the growth of protoplanets and the physical properties of the disk.AimsWe investigate the feasibility of using molecular lines to trace planet-induced structures in circumstellar disks.MethodsBased on 3D hydrodynamic simulations of planet-disk interactions obtained with the PLUTO code, we perform self-consistent temperature calculations and produce N-LTE molecular line velocity-channel maps and spectra of these disks using our new N-LTE line radiative transfer codeMol3D. Subsequently, we simulate ALMA observations using the CASA simulator. We consider two nearly face-on inclinations, five disk masses, seven disk radii, and two different typical pre-main-sequence host stars (T Tauri, Herbig Ae) at a distance of 140 pc. We calculate up to 141 individual velocity-channel maps for five molecules/isotopoloques (12C16O,12C18O, HCO+, HCN, and CS) in a total of 32 rotational transitions to investigate the frequency dependence of the structures indicated above.ResultsWe find that the majority of protoplanetary disks in our parameter space could be detected in the molecular lines considered. However, unlike the continuum case, gap detection is not straightforward in lines. For example, gaps are not seen in symmetric rings but are masked by the pattern caused by the global (Keplerian) velocity field. By comparison with simulated observations of undisturbed disks we identify specific regions in the velocity-channel maps that are characteristic of planet-induced structures.ConclusionsSimulations of high angular resolution molecular line observations demonstrate the potential of ALMA to provide complementary information about the planet-disk interaction as compared to continuum observations. In particular, the detection of planet-induced gaps is possible under certain conditions.
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影响因子:
6.5
作者:
A. Dutrey;S. Guilloteau;V. Piétu;E. Chapillon;F. Gueth;T. Henning;R. Launhardt;Y. Pavlyuchenkov;K. Schreyer;D. Semenov
通讯作者:
D. Semenov
影响因子:
6.5
作者:
Wing-Fai Thi Gerd-Jan van Zadelhoff;E. F. V. D. L. Observatory;nl;U. Amsterdam;D. Physics;Astronomy;University College London;UK.;K. Instituut
通讯作者:
Wing-Fai Thi Gerd-Jan van Zadelhoff;E. F. V. D. L. Observatory;nl;U. Amsterdam;D. Physics;Astronomy;University College London;UK.;K. Instituut
DOI:
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发表时间:
2013
期刊:
Proceedings of the International Astronomical Union
影响因子:
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作者:
Jean;C. Pinte;S. Maddison;F. M'enard
通讯作者:
F. M'enard
DOI:
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发表时间:
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影响因子:
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作者:
通讯作者:
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DOI:
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发表时间:
1978
期刊:
影响因子:
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作者:
B. Mihalas;L. Auer;D. Mihalas
通讯作者:
D. Mihalas