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A mid-infrared interferometric survey of the planet-forming region around young Sun-like stars

Published online by Cambridge University Press:  13 January 2020

József Varga ,
Péter Ábrahám ,
Lei Chen ,
Thorsten Ratzka ,
K. É. Gabányi  and
Á. Kóspál
József Varga
Affiliation:
Konkoly Observatory, Research Centre for Astronomy and Earth Sciences, Hungarian Academy of Sciences, Konkoly Thege Miklós út 15-17., H-1121 Budapest, Hungary, email: varga.jozsef@csfk.mta.hu Leiden Observatory, Leiden University, PO Box 9513, NL2300, RA Leiden, The Netherlands
Péter Ábrahám
Affiliation:
Konkoly Observatory, Research Centre for Astronomy and Earth Sciences, Hungarian Academy of Sciences, Konkoly Thege Miklós út 15-17., H-1121 Budapest, Hungary, email: varga.jozsef@csfk.mta.hu
Lei Chen
Affiliation:
Konkoly Observatory, Research Centre for Astronomy and Earth Sciences, Hungarian Academy of Sciences, Konkoly Thege Miklós út 15-17., H-1121 Budapest, Hungary, email: varga.jozsef@csfk.mta.hu
Thorsten Ratzka
Affiliation:
Institute for Physics/IGAM, University of Graz, Universitätsplatz 5/II, 8010, Graz, Austria
K. É. Gabányi
Affiliation:
Konkoly Observatory, Research Centre for Astronomy and Earth Sciences, Hungarian Academy of Sciences, Konkoly Thege Miklós út 15-17., H-1121 Budapest, Hungary, email: varga.jozsef@csfk.mta.hu MTA-ELTE Extragalactic Astrophysics Research Group, Pázmány Péter sétány 1/A H-1117 BudapestHungary
Á. Kóspál
Affiliation:
Konkoly Observatory, Research Centre for Astronomy and Earth Sciences, Hungarian Academy of Sciences, Konkoly Thege Miklós út 15-17., H-1121 Budapest, Hungary, email: varga.jozsef@csfk.mta.hu Max Planck Institute for Astronomy, Königstuhl 17, 69117 Heidelberg, Germany
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Abstract

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We present our results from a mid-infrared interferometric survey targeted at the planet-forming region in the circumstellar disks around low- and intermediate-mass young stars. Our sample consists of 82 objects, including T Tauri stars, Herbig Ae stars, and young eruptive stars. Our main results are: 1) Disks around T Tauri stars are similar to those around Herbig Ae stars, but are relatively more extended once we account for stellar luminosity. 2) From the distribution of the sizes of the mid-infrared emitting region we find that inner dusty disk holes may be present in roughly half of the sample. 3) Our analysis of the silicate spectral feature reveals that the dust in the inner ~1 au region of disks is generally more processed than that in the outer regions. 4) The dust in the disks of T Tauri stars typically show weaker silicate emission in the N band spectrum, compared to Herbig Ae stars, which may indicate a general difference in the disk structure. Our data products are available at VizieR, and at the following web page: http://konkoly.hu/MIDI_atlas.

Keywords

stars: pre–main-sequenceplanetary systems: protoplanetary diskstechniques: interferometricinfrared: stars
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S345: Origins: From the Protosun to the First Steps of Life , August 2018 , pp. 128 - 131
Copyright
© International Astronomical Union 2020 

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