The SPHERE view of the Chamaeleon I star-forming region

Fuente: arXiv

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Bibliographische Detailangaben
Hauptverfasser:	Ginski, C., Garufi, A., Benisty, M., Tazaki, R., Dominik, C., Ribas, A., Engler, N., Birnstiel, T., Chauvin, G., Columba, G., Facchini, S., Goncharov, A., Hagelberg, J., Henning, T., Hogerheijde, M., van Holstein, R. G., Huang, J., Muto, T., Pinilla, P., Kanagawa, K., Kim, S., Kurtovic, N., Langlois, M., Manara, C., Milli, J., Momose, M., Orihara, R., Pawellek, N., Pinte, C., Rab, C., Schmidt, T. O. B., Snik, F., Wahhaj, Z., Williams, J., Zurlo, A.
Format:	Preprint
Veröffentlicht:	2024
Schlagworte:	Astrophysics of Galaxies Earth and Planetary Astrophysics Solar and Stellar Astrophysics
Online-Zugang:	Acceder al recurso
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_version_	1866911788738543616
author	Ginski, C. Garufi, A. Benisty, M. Tazaki, R. Dominik, C. Ribas, A. Engler, N. Birnstiel, T. Chauvin, G. Columba, G. Facchini, S. Goncharov, A. Hagelberg, J. Henning, T. Hogerheijde, M. van Holstein, R. G. Huang, J. Muto, T. Pinilla, P. Kanagawa, K. Kim, S. Kurtovic, N. Langlois, M. Manara, C. Milli, J. Momose, M. Orihara, R. Pawellek, N. Pinte, C. Rab, C. Schmidt, T. O. B. Snik, F. Wahhaj, Z. Williams, J. Zurlo, A.
author_facet	Ginski, C. Garufi, A. Benisty, M. Tazaki, R. Dominik, C. Ribas, A. Engler, N. Birnstiel, T. Chauvin, G. Columba, G. Facchini, S. Goncharov, A. Hagelberg, J. Henning, T. Hogerheijde, M. van Holstein, R. G. Huang, J. Muto, T. Pinilla, P. Kanagawa, K. Kim, S. Kurtovic, N. Langlois, M. Manara, C. Milli, J. Momose, M. Orihara, R. Pawellek, N. Pinte, C. Rab, C. Schmidt, T. O. B. Snik, F. Wahhaj, Z. Williams, J. Zurlo, A.
contents	We used VLT/SPHERE to observe 20 systems in the Cha I cloud in polarized scattered light in the near-infrared. We combined the scattered light observations with existing literature data on stellar properties and with archival ALMA continuum data to study trends with system age and dust mass. We also connected resolved near-infrared observations with the spectral energy distributions of the systems. In 13 of the 20 systems included in this study we detected resolved scattered light signals from circumstellar dust. For the CR Cha, CT Cha, CV Cha, SY Cha, SZ Cha, and VZ Cha systems we present the first detailed descriptions of the disks in scattered light. The observations found typically smooth or faint disks, often with little substructure, with the notable exceptions of SZ Cha, which shows an extended multiple-ringed disk, and WW Cha, which shows interaction with the cloud environment. New high S/N K- band observations of the HD 97048 system in our survey reveal a significant brightness asymmetry that may point to disk misalignment and subsequent shadowing of outer disk regions, possibly related to the suggested planet candidate in the disk. We resolve for the first time the stellar binary in the CS Cha system. Multiple wavelength observations of the disk around CS Cha have revealed that the system contains small, compact dust grains that may be strongly settled, consistent with numerical studies of circumbinary disks. We find in our sample that there is a strong anti-correlation between the presence of a (close) stellar companion and the detection of circumstellar material with five of our seven nondetections located in binary systems.
format	Preprint
id	arxiv_https___arxiv_org_abs_2403_02149
institution	arXiv
publishDate	2024
record_format	arxiv
spellingShingle	The SPHERE view of the Chamaeleon I star-forming region Ginski, C. Garufi, A. Benisty, M. Tazaki, R. Dominik, C. Ribas, A. Engler, N. Birnstiel, T. Chauvin, G. Columba, G. Facchini, S. Goncharov, A. Hagelberg, J. Henning, T. Hogerheijde, M. van Holstein, R. G. Huang, J. Muto, T. Pinilla, P. Kanagawa, K. Kim, S. Kurtovic, N. Langlois, M. Manara, C. Milli, J. Momose, M. Orihara, R. Pawellek, N. Pinte, C. Rab, C. Schmidt, T. O. B. Snik, F. Wahhaj, Z. Williams, J. Zurlo, A. Astrophysics of Galaxies Earth and Planetary Astrophysics Solar and Stellar Astrophysics We used VLT/SPHERE to observe 20 systems in the Cha I cloud in polarized scattered light in the near-infrared. We combined the scattered light observations with existing literature data on stellar properties and with archival ALMA continuum data to study trends with system age and dust mass. We also connected resolved near-infrared observations with the spectral energy distributions of the systems. In 13 of the 20 systems included in this study we detected resolved scattered light signals from circumstellar dust. For the CR Cha, CT Cha, CV Cha, SY Cha, SZ Cha, and VZ Cha systems we present the first detailed descriptions of the disks in scattered light. The observations found typically smooth or faint disks, often with little substructure, with the notable exceptions of SZ Cha, which shows an extended multiple-ringed disk, and WW Cha, which shows interaction with the cloud environment. New high S/N K- band observations of the HD 97048 system in our survey reveal a significant brightness asymmetry that may point to disk misalignment and subsequent shadowing of outer disk regions, possibly related to the suggested planet candidate in the disk. We resolve for the first time the stellar binary in the CS Cha system. Multiple wavelength observations of the disk around CS Cha have revealed that the system contains small, compact dust grains that may be strongly settled, consistent with numerical studies of circumbinary disks. We find in our sample that there is a strong anti-correlation between the presence of a (close) stellar companion and the detection of circumstellar material with five of our seven nondetections located in binary systems.
title	The SPHERE view of the Chamaeleon I star-forming region
topic	Astrophysics of Galaxies Earth and Planetary Astrophysics Solar and Stellar Astrophysics
url	https://arxiv.org/abs/2403.02149