The GRAVITY Young Stellar Object survey -- I. Probing the disks of Herbig Ae/Be stars in terrestrial orbits
K. Perraut, L. Labadie, B. Lazareff, L. Klarmann, D. Segura-Cox, M. Benisty, J. Bouvier, W. Brandner, A. Caratti o Garatti, P. Caselli, C. Dougados, P. Garcia, … 展开作者
K. Perraut, L. Labadie, B. Lazareff, L. Klarmann, D. Segura-Cox, M. Benisty, J. Bouvier, W. Brandner, A. Caratti o Garatti, P. Caselli, C. Dougados, P. Garcia, R. Garcia-Lopez, S. Kendrew, M. Koutoulaki, P. Kervella, C. -C. Lin, J. Pineda, J. Sanchez-Bermudez, E. van Dishoeck, R. Abuter, A. Amorim, J. -P. Berger, H. Bonnet, A. Buron, F. Cantalloube, Y. Clénet, V. Coudé du Foresto, J. Dexter, P. T. de Zeeuw, G. Duvert, A. Eckart, F. Eisenhauer, F. Eupen, F. Gao, E. Gendron, R. Genzel, S. Gillessen, P. Gordo, R. Grellmann, X. Haubois, F. Haussmann, T. Henning, S. Hippler, M. Horrobin, Z. Hubert, L. Jocou, S. Lacour, J. -B. Le Bouquin, P. Léna, A. Mérand, T. Ott, T. Paumard, G. Perrin, O. Pfuhl, S. Rabien, T. Ray, C. Rau, G. Rousset, S. Scheithauer, O. Straub, C. Straubmeier, E. Sturm, F. Vincent, I. Waisberg, I. Wank, F. Widmann, E. Wieprecht, M. Wiest, E. Wiezorrek, J. Woillez, S. Yazici
备注：
Accepted for publication in A&A; 23 pages, 16 figures, 7 tables
The formation and the evolution of protoplanetary disks are important stages in the lifetime of stars. The processes of disk evolution and planet formation are intrinsically linked. We spatially resolve with GRAVITY/VLTI in the K-band the sub au-scale region of 27 stars to gain statistical understanding of their properties. We look for correlations with stellar parameters, such as luminosity, mass, temperature and age. Our sample also cover a range of various properties in terms of reprocessed flux, flared or flat morphology, and gaps. We developed semi-physical geometrical models to fit our interferometric data. Our best models correspond to smooth and wide rings, implying that wedge-shaped rims at the dust sublimation edge are favored, as found in the H-band. The closure phases are generally non-null with a median value of ~10 deg, indicating spatial asymmetries of the intensity distributions. Multi-size grain populations could explain the closure phase ranges below 20-25 deg but other scenarios should be invoked to explain the largest ones. Our measurements extend the Radius-Luminosity relation to ~1e4 Lsun and confirm the significant spread around the mean relation observed in the H-band. Gapped sources exhibit a large N-to-K band size ratio and large values of this ratio are only observed for the members of our sample that would be older than 1 Ma, less massive, and with lower luminosity. In the 2 Ms mass range, we observe a correlation in the increase of the relative age with the transition from group II to group I, and an increase of the N-to-K size ratio. However, the size of the current sample does not yet permit us to invoke a clear universal evolution mechanism across the HAeBe mass range. The measured locations of the K-band emission suggest that these disks might be structured by forming young planets, rather than by depletion due to EUV, FUV, and X-ray photo-evaporation.
Institute for Basic Science (IBS)（基础科学研究所）；Chungnam National University（忠南国立大学）；Korea Institute for Advanced Study（韩国高等研究院）；INAF, Osservatorio Astronomico d’Abruzzo（意大利国家天体物理研究所阿布鲁佐天文台）；Istituto Nazionale di Fisica Nucleare - Sezione di Roma（意大利国家核物理研究所罗马分部）；Kyungpook National University（庆北国立大学）
XUE. ProDiMo models of internally and externally irradiated planet-forming disks around 0.3-4.0 solar mass stars (The IRIS project I)
Stockholm University（斯德哥尔摩大学）；Pennsylvania State University（宾夕法尼亚州立大学）；Space Research Institute, Austrian Academy of Sciences（奥地利科学院空间研究所）；Center for Exoplanets and Habitable Worlds, Penn State University（宾夕法尼亚州立大学系外行星与宜居世界中心）；Ludwig-Maximilians-Universität München（慕尼黑路德维希-马克西米利安大学）；Max-Planck-Institut für extraterrestrische Physik（马普地外物理研究所）；Max-Planck-Institut für Astronomie（马普天体物理研究所）；Radboud University（拉德堡德大学）
JWST Exoplanetary Worlds and Elemental Survey (JEWELS) II: Condensation Temperature Trends and Galactic Chemical Evolution in JWST Planet-Hosting Stars
Tsung-Dao Lee Institute, School of Physics and Astronomy, & State Key Laboratory of Dark Matter Physics, Shanghai Jiao Tong University（上海交通大学物理与天文学院、汤川研究所、暗物质物理国家重点实验室）；Department of Physics, King’s College London（伦敦国王学院物理系）；Department of Astronomy, Tsinghua University（清华大学天文系）；National Astronomical Observatories, Chinese Academy of Sciences（中国科学院国家天文台）
