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An Unbiased SPHERE-IFS Survey of Nearby Herbig Ae/Be Stars: Are All Group I Disks Transitional?

Published online by Cambridge University Press:  13 January 2020

Maria Giulia Ubeira Gabellini ,
Mario E. van den Ancker Open the ORCID record for Mario E. van den Ancker [Opens in a new window] ,
Davide Fedele ,
Giuseppe Lodato  and
Carlo Felice Manara
Maria Giulia Ubeira Gabellini
Affiliation:
Dip. di Fisica, Universitá Degli Studi di Milano, Via Celoria, 16, Milano, I-20133, Italy email: maria.ubeira@unimi.it, giuseppe.lodato@unimi.it ESO, Karl-Schwarzschild-Strasse 2, D-85748 Garching bei München, Germany email: mvandena@eso.org, cmanara@eso.org
Mario E. van den Ancker
Affiliation:
ESO, Karl-Schwarzschild-Strasse 2, D-85748 Garching bei München, Germany email: mvandena@eso.org, cmanara@eso.org
Davide Fedele
Affiliation:
INAF - Osservatorio Astrofisico di Arcetri, Largo E. Fermi 5, I-50125 Firenze, Italy email: fedele@arcetri.astro.it
Giuseppe Lodato
Affiliation:
Dip. di Fisica, Universitá Degli Studi di Milano, Via Celoria, 16, Milano, I-20133, Italy email: maria.ubeira@unimi.it, giuseppe.lodato@unimi.it
Carlo Felice Manara
Affiliation:
ESO, Karl-Schwarzschild-Strasse 2, D-85748 Garching bei München, Germany email: mvandena@eso.org, cmanara@eso.org
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Abstract

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Using a novel method for speckle noise suppression from SPHERE-IFS data, we performed a systematic survey for disks in 22 Herbig Ae/Be stars, spatially resolving five disks and detecting seven new companion candidates. The fraction of sources with spatially resolved disks is systematically higher in the Meeus et al. (2001) group I sources, showing that disks are indeed more easily seen in scattered light in this sub-class of Herbig stars, consistent with the interpretation of group I sources having large gaps in their disks.

Keywords

Techniques: high angular resolutionprotoplanetary disksstars: pre-main-sequence
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. 250 - 251
Copyright
© International Astronomical Union 2020 

References

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Maaskant, K.M., Honda, M., Waters, L.B.F.M., et al. 2013, A&A, 555, 64 Google Scholar
Meeus, G., Waters, L.B.F.M., Bouwman, J., et al. 2001, A&A, 365, 476 Google Scholar
Testi, L, et al. 2014, in Protostars and Planets VI, pp. 339–361 Google Scholar