Disks around young stars with VLTI/MIDI

Roy Van Boekel, P. Ábrahám, Serge Correia, Alex De Koter, Carsten Dominik, Anne Dutrey, Thomas Henning, Ágnes Kóspál, Régis Lachaume, Christoph Leinert, Hendrik Linz, Michiel Min, László Mosoni, Thomas Preibisch, Sascha Quanz, Thorsten Ratzka, Alexander Schegerer, Rens Waters, Sebastian Wolf, Hans Zinnecker

Research output: Conference contribution

Abstract

We report on observations of circumstellar disks around young stars that have been obtained with the MIDI instrument, which is mounted on the VLT Interferometer and operates in the 10 μm atmospheric window. The maximum spatial resolution of 5 milli-arcsec corresponds to sub-AU scales at the distance to nearby star formation regions. Thus, we can study the disks on the spatial scales at which important processes occur, such as accretion, dust processing, and planet formation. The main results obtained so far can be summarized as follows: 1. The measured interferometric visibilities are in good qualitative agreement with those predicted by models of circumstellar disks. In particular, a predicted correlation between the strength of the far-infrared excess and the spatial structure of the disk is confirmed by direct measurements; 2. In several objects strong evidence for deviations from circular symmetry is present, indicating that an inclined disk is indeed the dominant component seen in the mid-infrared; 3. The dust properties are not uniform over the disk, but are instead a strong function of distance to the central star. The dust in the innermost disk regions is observed to be more "processed" than the dust further out, both in Herbig Ae star disks and in those around T Tauri stars.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume6268 I
DOIs
Publication statusPublished - 2006
EventAdvances in Stellar Interferometry - Orlando, FL, United States
Duration: máj. 25 2006máj. 30 2006

Other

OtherAdvances in Stellar Interferometry
CountryUnited States
CityOrlando, FL
Period5/25/065/30/06

Fingerprint

Stars
Dust
stars
dust
Infrared radiation
Planets
Visibility
Interferometers
atmospheric windows
T Tauri stars
visibility
star formation
planets
Processing
interferometers
spatial resolution
deviation
symmetry

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Van Boekel, R., Ábrahám, P., Correia, S., De Koter, A., Dominik, C., Dutrey, A., ... Zinnecker, H. (2006). Disks around young stars with VLTI/MIDI. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 6268 I). [62680D] https://doi.org/10.1117/12.673777

Disks around young stars with VLTI/MIDI. / Van Boekel, Roy; Ábrahám, P.; Correia, Serge; De Koter, Alex; Dominik, Carsten; Dutrey, Anne; Henning, Thomas; Kóspál, Ágnes; Lachaume, Régis; Leinert, Christoph; Linz, Hendrik; Min, Michiel; Mosoni, László; Preibisch, Thomas; Quanz, Sascha; Ratzka, Thorsten; Schegerer, Alexander; Waters, Rens; Wolf, Sebastian; Zinnecker, Hans.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 6268 I 2006. 62680D.

Research output: Conference contribution

Van Boekel, R, Ábrahám, P, Correia, S, De Koter, A, Dominik, C, Dutrey, A, Henning, T, Kóspál, Á, Lachaume, R, Leinert, C, Linz, H, Min, M, Mosoni, L, Preibisch, T, Quanz, S, Ratzka, T, Schegerer, A, Waters, R, Wolf, S & Zinnecker, H 2006, Disks around young stars with VLTI/MIDI. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 6268 I, 62680D, Advances in Stellar Interferometry, Orlando, FL, United States, 5/25/06. https://doi.org/10.1117/12.673777
Van Boekel R, Ábrahám P, Correia S, De Koter A, Dominik C, Dutrey A et al. Disks around young stars with VLTI/MIDI. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 6268 I. 2006. 62680D https://doi.org/10.1117/12.673777
Van Boekel, Roy ; Ábrahám, P. ; Correia, Serge ; De Koter, Alex ; Dominik, Carsten ; Dutrey, Anne ; Henning, Thomas ; Kóspál, Ágnes ; Lachaume, Régis ; Leinert, Christoph ; Linz, Hendrik ; Min, Michiel ; Mosoni, László ; Preibisch, Thomas ; Quanz, Sascha ; Ratzka, Thorsten ; Schegerer, Alexander ; Waters, Rens ; Wolf, Sebastian ; Zinnecker, Hans. / Disks around young stars with VLTI/MIDI. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 6268 I 2006.
@inproceedings{2e96737cde3b494b9bde20126303135d,
title = "Disks around young stars with VLTI/MIDI",
abstract = "We report on observations of circumstellar disks around young stars that have been obtained with the MIDI instrument, which is mounted on the VLT Interferometer and operates in the 10 μm atmospheric window. The maximum spatial resolution of 5 milli-arcsec corresponds to sub-AU scales at the distance to nearby star formation regions. Thus, we can study the disks on the spatial scales at which important processes occur, such as accretion, dust processing, and planet formation. The main results obtained so far can be summarized as follows: 1. The measured interferometric visibilities are in good qualitative agreement with those predicted by models of circumstellar disks. In particular, a predicted correlation between the strength of the far-infrared excess and the spatial structure of the disk is confirmed by direct measurements; 2. In several objects strong evidence for deviations from circular symmetry is present, indicating that an inclined disk is indeed the dominant component seen in the mid-infrared; 3. The dust properties are not uniform over the disk, but are instead a strong function of distance to the central star. The dust in the innermost disk regions is observed to be more {"}processed{"} than the dust further out, both in Herbig Ae star disks and in those around T Tauri stars.",
keywords = "Circumstellar, Disk, Dust, Evolution, Infrared, Interferometry, Planet formation, Radiative transfer, Star formation, YSO",
author = "{Van Boekel}, Roy and P. {\'A}brah{\'a}m and Serge Correia and {De Koter}, Alex and Carsten Dominik and Anne Dutrey and Thomas Henning and {\'A}gnes K{\'o}sp{\'a}l and R{\'e}gis Lachaume and Christoph Leinert and Hendrik Linz and Michiel Min and L{\'a}szl{\'o} Mosoni and Thomas Preibisch and Sascha Quanz and Thorsten Ratzka and Alexander Schegerer and Rens Waters and Sebastian Wolf and Hans Zinnecker",
year = "2006",
doi = "10.1117/12.673777",
language = "English",
isbn = "0819463337",
volume = "6268 I",
booktitle = "Proceedings of SPIE - The International Society for Optical Engineering",

}

TY - GEN

T1 - Disks around young stars with VLTI/MIDI

AU - Van Boekel, Roy

AU - Ábrahám, P.

AU - Correia, Serge

AU - De Koter, Alex

AU - Dominik, Carsten

AU - Dutrey, Anne

AU - Henning, Thomas

AU - Kóspál, Ágnes

AU - Lachaume, Régis

AU - Leinert, Christoph

AU - Linz, Hendrik

AU - Min, Michiel

AU - Mosoni, László

AU - Preibisch, Thomas

AU - Quanz, Sascha

AU - Ratzka, Thorsten

AU - Schegerer, Alexander

AU - Waters, Rens

AU - Wolf, Sebastian

AU - Zinnecker, Hans

PY - 2006

Y1 - 2006

N2 - We report on observations of circumstellar disks around young stars that have been obtained with the MIDI instrument, which is mounted on the VLT Interferometer and operates in the 10 μm atmospheric window. The maximum spatial resolution of 5 milli-arcsec corresponds to sub-AU scales at the distance to nearby star formation regions. Thus, we can study the disks on the spatial scales at which important processes occur, such as accretion, dust processing, and planet formation. The main results obtained so far can be summarized as follows: 1. The measured interferometric visibilities are in good qualitative agreement with those predicted by models of circumstellar disks. In particular, a predicted correlation between the strength of the far-infrared excess and the spatial structure of the disk is confirmed by direct measurements; 2. In several objects strong evidence for deviations from circular symmetry is present, indicating that an inclined disk is indeed the dominant component seen in the mid-infrared; 3. The dust properties are not uniform over the disk, but are instead a strong function of distance to the central star. The dust in the innermost disk regions is observed to be more "processed" than the dust further out, both in Herbig Ae star disks and in those around T Tauri stars.

AB - We report on observations of circumstellar disks around young stars that have been obtained with the MIDI instrument, which is mounted on the VLT Interferometer and operates in the 10 μm atmospheric window. The maximum spatial resolution of 5 milli-arcsec corresponds to sub-AU scales at the distance to nearby star formation regions. Thus, we can study the disks on the spatial scales at which important processes occur, such as accretion, dust processing, and planet formation. The main results obtained so far can be summarized as follows: 1. The measured interferometric visibilities are in good qualitative agreement with those predicted by models of circumstellar disks. In particular, a predicted correlation between the strength of the far-infrared excess and the spatial structure of the disk is confirmed by direct measurements; 2. In several objects strong evidence for deviations from circular symmetry is present, indicating that an inclined disk is indeed the dominant component seen in the mid-infrared; 3. The dust properties are not uniform over the disk, but are instead a strong function of distance to the central star. The dust in the innermost disk regions is observed to be more "processed" than the dust further out, both in Herbig Ae star disks and in those around T Tauri stars.

KW - Circumstellar

KW - Disk

KW - Dust

KW - Evolution

KW - Infrared

KW - Interferometry

KW - Planet formation

KW - Radiative transfer

KW - Star formation

KW - YSO

UR - http://www.scopus.com/inward/record.url?scp=33748990103&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33748990103&partnerID=8YFLogxK

U2 - 10.1117/12.673777

DO - 10.1117/12.673777

M3 - Conference contribution

SN - 0819463337

SN - 9780819463333

VL - 6268 I

BT - Proceedings of SPIE - The International Society for Optical Engineering

ER -