Results 71 to 80 of about 2,019 (232)

Observations of Circumstellar Disks

, 2001
Review article to appear in "The 4th Tetons Summer School Conference: "Galactic Structure, Stars, and the Interstellar Medium," ed. C.W. Woodward, M. . Bicay, & J.M. Schull (San Francisco: ASP), 23 page LaTeX file with 7 low-resolution figures. For postscript version with embedded high-resolution figures, retrieve from http://www.hep.upenn.edu/PORG/
openaire   +2 more sources

Particle emissivity in circumstellar disks

The Astrophysical Journal, 1991
Submillimeter continuum observations of 29 pre-main-sequence objects in Taurus and Orion are used to study the wavelength dependence of particle emission. These objects are mostly T Tauri stars whose long-wavelength emission is thought to originate in circumstellar disks.
Steven V. W. Beckwith, Anneila I. Sargent   +1 more
openaire   +1 more source

Modeling Circumstellar Gas Emission around a White Dwarf Using cloudy

The Astronomical Journal
The chemical composition of an extrasolar planet is fundamental to its formation, evolution, and habitability. In this study, we explore a new way to measure the chemical composition of the building blocks of extrasolar planets by measuring the gas ...
Siyi Xu, Sherry Yeh, Laura. K. Rogers, Amy Steele, Erik Dennihy, Alexandra E. Doyle, P. Dufour, Beth L. Klein, Christopher J. Manser, Carl Melis, Tinggui Wang, Alycia J. Weinberger   +11 more
doaj   +1 more source

RX J0123.4-7321 -- the story continues: major circumstellar disk loss and recovery [PDF]

, 2021
M. J. Coe, A. Udalski, J. A. Kennea, P. A. Evans   +3 more
openalex   +1 more source

Imaging Circumstellar Debris Disks

, 1998
4 pages, includes one color PostScript figure, to appear in Proceedings of the Vatican Observatory Symposium on Astrophysics Research and Science ...
openaire   +2 more sources

The Warped Circumstellar Disk of HD 100546

The Astrophysical Journal, 2006
We propose that the two armed spiral features seen in visible Hubble Space Telescope images of scattered light in HD100546's circumstellar disk are caused by the illumination of a warped outer disk. A tilt of 6-15 degrees from the symmetry plane can cause the observed surface brightness variations providing the disk is very twisted (highly warped) at ...
openaire   +2 more sources

VLTI/GRAVITY Provides Evidence the Young, Substellar Companion HD 136164 Ab Formed Like a “Failed Star”

The Astronomical Journal
Young, low-mass brown dwarfs orbiting early-type stars, with low mass ratios ( q ≲ 0.01), appear to be intrinsically rare and present a formation dilemma: could a handful of these objects be the highest-mass outcomes of “planetary” formation channels ...
William O. Balmer, L. Pueyo, S. Lacour, J. J. Wang, T. Stolker, J. Kammerer, N. Pourré, M. Nowak, E. Rickman, S. Blunt, A. Sivaramakrishnan, D. Sing, K. Wagner, G.-D. Marleau, A.-M. Lagrange, R. Abuter, A. Amorim, R. Asensio-Torres, J.-P. Berger, H. Beust, A. Boccaletti, A. Bohn, M. Bonnefoy, H. Bonnet, M. S. Bordoni, G. Bourdarot, W. Brandner, F. Cantalloube, P. Caselli, B. Charnay, G. Chauvin, A. Chavez, E. Choquet, V. Christiaens, Y. Clénet, V. Coudé du Foresto, A. Cridland, R. Davies, R. Dembet, A. Drescher, G. Duvert, A. Eckart, F. Eisenhauer, N. M. Förster Schreiber, P. Garcia, R. Garcia Lopez, E. Gendron, R. Genzel, S. Gillessen, J. H. Girard, S. Grant, X. Haubois, G. Heißel, Th. Henning, S. Hinkley, S. Hippler, M. Houllé, Z. Hubert, L. Jocou, M. Keppler, P. Kervella, L. Kreidberg, N. T. Kurtovic, V. Lapeyrère, J.-B. Le Bouquin, P. Léna, D. Lutz, A.-L. Maire, F. Mang, A. Mérand, P. Mollière, C. Mordasini, D. Mouillet, E. Nasedkin, T. Ott, G. P. P. L. Otten, C. Paladini, T. Paumard, K. Perraut, G. Perrin, O. Pfuhl, D. C. Ribeiro, L. Rodet, Z. Rustamkulov, J. Shangguan, T. Shimizu, C. Straubmeier, E. Sturm, L. J. Tacconi, A. Vigan, F. Vincent, K. Ward-Duong, F. Widmann, T. Winterhalder, J. Woillez, S. Yazici, the GRAVITY Collaboration   +96 more
doaj   +1 more source

The effect of local optically thick regions in the long-wave emission of young circumstellar disks [PDF]

, 2012
Luca Ricci, Francesco Trotta, L. Testi, A. Natta, Andrea Isella, David J. Wilner   +5 more
openalex   +3 more sources

Sites of Planet Formation in Binary Systems. II. Double the Disks in DF Tau

The Astronomical Journal
This article presents the latest results of our Atacama Large Millimeter/submillimeter Array (ALMA) program to study circumstellar disk characteristics as a function of orbital and stellar properties in a sample of young binary star systems known to host
Taylor Kutra, Lisa Prato, Benjamin M Tofflemire, Rachel Akeson, G. H. Schaefer, Shih-Yun Tang, Dominique Segura-Cox, Christopher M. Johns-Krull, Adam Kraus, Sean Andrews, Eric L. N. Jensen   +10 more
doaj   +1 more source

CIRCUMSTELLAR DISKS AROUND BINARY STARS IN TAURUS

The Astrophysical Journal, 2014
We have conducted a survey of 17 wide (> 100 AU) young binary systems in Taurus with the Atacama Large Millimeter Array (ALMA) at two wavelengths. The observations were designed to measure the masses of circumstellar disks in these systems as an aid to understanding the role of multiplicity in star and planet formation.
Akeson, R. L., Jensen, Eric L.N.
openaire   +4 more sources