DR Tau: Temporal variability of the brightness distribution in the potential planet-forming region
DR Tau: Temporal variability of the brightness distribution in the potential planet-forming region
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DR Tau:潜在行星形成区域亮度分布的时间变化
DOI:
10.1051/0004-6361/201526691
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发表时间:
2016
期刊:
影响因子:
--
通讯作者:
F. Ober
中科院分区:
文献类型:
--
作者:
R. Bunngräber;S. Wolf;Th. Ratzka;F. Ober
AimsWe investigate the variability of the brightness distribution and the changing density structure of the protoplanetary disk around DR Tau, a classical T Tauri star. DR Tau is known for its peculiar variations from the ultraviolet (UV) to the mid-infrared (MIR). Our goal is to constrain the temporal variation of the disk structure based on photometric and MIR interferometric data.MethodsWe observed DR Tau with the MID-infrared Interferometric instrument (MIDI) at the Very Large Telescope Interferometer (VLTI) at three epochs separated by about nine years, two months, respectively. We fit the spectral energy distribution and the MIR visibilities with radiative transfer simulations.ResultsWe are able to reproduce the spectral energy distribution as well as the MIR visibility for one of the three epochs (third epoch) with a basic disk model. We were able to reproduce the very different visibility curve obtained nine years earlier with a very similar baseline (first epoch), using the same disk model with a smaller scale height. The same density distribution also reproduces the observation made with a higher spatial resolution in the second epoch, i.e. only two months before the third epoch.
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DOI:
10.1088/0004-637x/778/2/148
发表时间:
2013
期刊:
The Astrophysical Journal
影响因子:
--
作者:
S. Edwards;J. Kwan;W. Fischer;L. Hillenbrand;Kimberly Finn;Kristina Fedorenko;W. Feng
通讯作者:
W. Feng
DOI:
10.1088/0004-637x/782/1/51
发表时间:
2014
期刊:
The Astrophysical Journal
影响因子:
--
作者:
S. Antoniucci;T. Giannini;G. Causi;D. Lorenzetti
通讯作者:
D. Lorenzetti
影响因子:
6.5
作者:
Bitsch, Bertram;Johansen, Anders;Morbidelli, Alessandro
通讯作者:
Morbidelli, Alessandro
DOI:
--
发表时间:
2003
期刊:
影响因子:
--
作者:
G. Schneider;Kenneth Wood;M. Silverstone;D. Hines;D. Koerner;B. Whitney;J. Bjorkman;P. Lowrance
通讯作者:
P. Lowrance
DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
E. Semkov;S. Peneva;U. Munari;M. Dennefeld;H. Mito;D. Dimitrov;S. Ibryamov;K. Stoyanov
通讯作者:
K. Stoyanov