2016A&A...585A.100B


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.04CEST22:02:54

2016A&A...585A.100B - Astronomy and Astrophysics, volume 585A, 100-100 (2016/1-1)

DR Tauri: Temporal variability of the brightness distribution in the potential planet-forming region.

BRUNNGRABER R., WOLF S., RATZKA T. and OBER F.

Abstract (from CDS):

We 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.We 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.We 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.

Abstract Copyright:

Journal keyword(s): stars: variables: T Tauri, Herbig Ae/Be - stars: individual: DR Tau - radiative transfer - techniques: interferometric - protoplanetary disks

Simbad objects: 11

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Number of rows : 11

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 * 37 Tau PM* 04 04 41.7148415 +22 04 54.924282 6.41 5.44 4.37 3.58 3.05 K0III-IIIb 171 0
2 V* FS Tau Or* 04 22 02.1925017485 +26 57 30.331063489 17.57   14.10 15.63   M3.5e+M0e 257 0
3 NAME Tau-Aur Complex SFR 04 30 +25.0           ~ 1216 0
4 V* DR Tau Or* 04 47 06.2152696011 +16 58 42.814250257 12.03 11.86 10.50 12.19   K5Ve 467 0
5 V* GM Aur Or* 04 55 10.9813656049 +30 21 59.375978047 14.59 14.22 13.10     K3Ve 552 0
6 * omi02 Ori PM* 04 56 22.2761159 +13 30 52.093197 6.31 5.21 4.06 3.18 2.55 K2-IIIb 111 0
7 HD 33554 * 05 11 41.5642629 +16 02 44.421772   6.703 5.163     K5III 58 0
8 * phi02 Ori PM* 05 36 54.3881859 +09 17 26.409553 5.70 5.04 4.09 3.33 2.78 G9.5IIIbFe-2.5 337 0
9 * 17 Mon * 06 47 19.8294628711 +08 02 14.123889454 7.82 6.17 4.77 3.74 3.04 K4III 110 0
10 * h02 Pup SB* 08 14 02.9434614994 -40 20 52.469070271 6.70 5.61 4.44 3.60 2.96 K1II/III 39 0
11 THA 15-12 Or* 15 56 09.2067120748 -37 56 06.126159332   13.12 11.93 11.45   M0e 245 0

    Equat.    Gal    SGal    Ecl

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2020.07.04-22:02:54

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