Results 101 to 110 of about 2,036 (233)

Using Gravity as an Age Indicator for Young Stars

The Astrophysical Journal Letters
The age of a young star is difficult to measure and yet is a fundamental property that is essential for understanding stellar evolution. Accurate age indicators across the early phases of low-mass stars are scarce and often rely on properties of the ...
Michael Connelley, Christian Flores, Bo Reipurth   +2 more
doaj   +1 more source

Direct imaging of mass transfer and circumcompanion structures in π1 Gru with VLTI/MATISSE

Astronomy & Astrophysics
Aims. We investigate how the presence of a binary companion appears to affect dust and molecule formation in the circumstellar environment of a star on the asymptotic giant branch (AGB).
Drevon J., Paladini C., Höfner S., Planquart L., Siess L., Jorissen A., Montargés M., Vlemmings W., Khouri T., Olofsson H., Alonso-Hernandez J., De Beck E., Fonfria J. P., Hron J., Matter A., Nardetto N., Ohnaka K., Sanchez-Contreras C., Weigelt G., Wittkowski M., Bojnordi Arbab B., Aringer B., Baron F., Chiavassa A., Cruzalébes P., Danchi W. C., Kerschbaum F., Leftley J., Lagadec E., Lopez B., Lykou F., Millour F., Rau G., Sanchez-Bermudez J., Thévenin F., Van Eck S., Velilla-Prieto L.   +36 more
doaj   +1 more source

Identification of Possible Stellar Companions via Speckle Interferometry in a Sample of Be Stars II

The Astronomical Journal
This study investigates the identification of possible stellar companions in a sample of Be stars using speckle interferometry. Be stars, which are rapidly rotating B-type stars exhibiting emission lines due to the presence of circumstellar disks, have ...
C. A. Guerrero, T. B. Souza, M. Borges Fernandes, A. D. Guajardo Jurado   +3 more
doaj   +1 more source

Dynamical Analysis of the HD 169142 Planet-forming Disk: Twelve Years of High-contrast Polarimetry

The Astronomical Journal
We present a dynamical analysis of the HD 169142 planet-forming disk based on high-contrast polarimetric imaging over a twelve-year observational period, offering insights into its disk evolution and planet–disk interactions.
Miles Lucas, Michael Bottom, Ruobing Dong, Myriam Benisty, Mario Flock, Maria Vincent, Jonathan Williams, Kyohoon Ahn, Thayne Currie, Vincent Deo, Olivier Guyon, Tomoyuki Kudo, Lucinda Lilley, Julien Lozi, Maxwell Millar-Blanchaer, Barnaby Norris, Sebastián Pérez, Boris Safonov, Peter Tuthill, Taichi Uyama, Sébastien Vievard, Manxuan Zhang   +21 more
doaj   +1 more source

How Observations of Circumstellar Disk Asymmetries Can Reveal Hidden Planets: Pericenter Glow and Its Application to the HR 4796 Disk [PDF]

, 1999
M. C. Wyatt, S. F. Dermott, C. M. Telesco, R. S. Fisher, K. Grogan, E. K. Holmes, R. K. Pina   +6 more
openalex   +1 more source

Dynamical evolution of second-generation circumstellar/protoplanetary disks in evolved wide binary systems [PDF]

, 2023
Raffaele Stefano Cattolico, Hagai B. Perets   +1 more
openalex   +1 more source

exoALMA. III. Line-intensity Modeling and System Property Extraction from Protoplanetary Disks

The Astrophysical Journal Letters
The ALMA large program exoALMA offers a unique window into the three-dimensional physical and dynamical properties of 15 circumstellar disks where planets may be actively forming. Here, we present an analysis methodology to map the gas disk structure and
Andrés F. Izquierdo, Jochen Stadler, Maria Galloway-Sprietsma, Myriam Benisty, Christophe Pinte, Jaehan Bae, Richard Teague, Stefano Facchini, Lisa Wölfer, Cristiano Longarini, Pietro Curone, Sean M. Andrews, Marcelo Barraza-Alfaro, Gianni Cataldi, Nicolás Cuello, Ian Czekala, Daniele Fasano, Mario Flock, Misato Fukagawa, Himanshi Garg, Cassandra Hall, Iain Hammond, Thomas Hilder, Jane Huang, John D. Ilee, Andrea Isella, Kazuhiro Kanagawa, Geoffroy Lesur, Giuseppe Lodato, Ryan A. Loomis, Ryuta Orihara, Daniel J. Price, Giovanni Rosotti, Leonardo Testi, Hsi-Wei Yen, Gaylor Wafflard-Fernandez, David J. Wilner, Andrew J. Winter, Tomohiro C. Yoshida, Brianna Zawadzki   +39 more
doaj   +1 more source

Erratum: "A Circumstellar Disk in a High-Mass Star-forming Region" ([URL ADDRESS="/cgi-bin/resolve?2004ApJ...603L.113P" STATUS="OKAY"]ApJ, 603, L113 [2003][/URL]) [PDF]

, 2004
M. Pestalozzi, Moshe Elitzur, J. E. Conway, R. S. Booth   +3 more
openalex   +1 more source

Size distribution of circumstellar disks in the Trapezium cluster [PDF]

, 2005
S. Vicente, J. Alves
openalex   +2 more sources

Circumstellar Disks and Outer Planet Formation [PDF]

, 1998
A. Lecavelier des Étangs
openalex   +1 more source