Results 111 to 120 of about 398,118 (263)

Extinction Values toward Embedded Planets in Protoplanetary Disks Estimated from Hydrodynamic Simulations

The Astrophysical Journal
Upcoming new coronographs with deeper contrast limits, together with planned and current high-contrast imaging campaigns, will push the detectability limit of protoplanets.
Felipe Alarcón, Edwin A. Bergin, Gabriele Cugno   +2 more
doaj   +1 more source

A millimeter Continuum Size–Luminosity Relationship for Protoplanetary Disks [PDF]

, 2017
We present a survey at subarcsecond resolution of the 340 GHz dust continuum emission from 50 nearby protoplanetary disks, based on new and archival observations with the Submillimeter Array.
A. Tripathi, S. Andrews, T. Birnstiel, D. Wilner   +3 more
semanticscholar   +1 more source

Using X‐ray computed microtomography (μCT) to determine subsample‐specific cosmogenic noble gas production rates of E (enstatite) chondrites

Meteoritics &Planetary Science, Volume 60, Issue 3, Page 442-463, March 2025.
Abstract Cosmic ray exposure (CRE) ages provide information about the parent bodies and source regions of meteorite classes. Cosmogenic noble gases are often used to quantify exposure time scales ranging from tens of ka to hundreds of Ma. The production rate of cosmogenic noble gases is primarily controlled by a meteorite's chemical composition ...
M. Mijjum, B. J. Andrews, T. J. McCoy, C. M. Corrigan, M. W. Caffee, M. M. Tremblay   +5 more
wiley   +1 more source

A primitive asteroid that lived fast and died young sampled by a xenolith in the Cold Bokkeveld CM2 carbonaceous chondrite

Meteoritics &Planetary Science, Volume 60, Issue 3, Page 464-483, March 2025.
Abstract Xenoliths in carbonaceous chondrites include lithologies that are unrepresented in the meteorite record and so are a rich source of information on asteroid diversity. Cold Bokkeveld is a CM2 regolith breccia that contains both hydrous and anhydrous lithic clasts. Here, we describe a hydrous clast with a fine‐grained rim.
Martin R. Lee, Cameron J. Floyd, Robin Haller, Sammy Griffin   +3 more
wiley   +1 more source

Mid‐infrared detection and characterization of refractory inclusions in CM and CO chondrites: A non‐destructive approach for returned space samples

Meteoritics &Planetary Science, Volume 60, Issue 3, Page 544-569, March 2025.
Abstract Refractory inclusions (RIs) in chondrites are widely used as tracers of early solar system formation conditions. In the context of sample‐return missions, a non‐destructive and non‐invasive analytical tool that can rapidly detect and characterize RIs in space samples during their early phase of study is highly needed.
Jean Charlier, Alice Aléon‐Toppani, Rosario Brunetto, Jérôme Aléon, Ferenc Borondics   +4 more
wiley   +1 more source

Different dust and gas radial extents in protoplanetary disks: consistent models of grain growth and CO emission [PDF]

, 2017
Context. ALMA observations of protoplanetary disks confirm earlier indications that there is a clear difference between the dust and gas radial extents. The origin of this difference is still debated, with both radial drift of the dust and optical depth ...
S. Facchini, T. Birnstiel, S. Bruderer, E. Dishoeck   +3 more
semanticscholar   +1 more source

Scattered light mapping of protoplanetary disks

, 2016
High-contrast scattered light observations have revealed the surface morphology of several dozens of protoplanetary disks at optical and near-infrared wavelengths.
Avenhaus, H., Dominik, C., Garufi, A., Min, M., Mulders, G. D., Stolker, T.   +5 more
core   +1 more source

Measuring the Two-dimensional Thermal Structures of Protoplanetary Disks

The Astrophysical Journal
We present a flexible, annulus-by-annulus method to constrain the 2D thermal structure of a protoplanetary disk from optically thick spectral line emission.
Anna J. Fehr, Sean M. Andrews
doaj   +1 more source

Vortex migration in protoplanetary disks

, 2010
We consider the radial migration of vortices in two-dimensional isothermal gaseous disks. We find that a vortex core, orbiting at the local gas velocity, induces velocity perturbations that propagate away from the vortex as density waves.
Abramowitz, Barge, Barranco, Bryden, Geoffroy Lesur, Godon, Goodman, John C. B. Papaloizou, Johnson, Johnson, Klahr, Koller, Lovelace, Papaloizou, Petersen, Petersen, Sijme-Jan Paardekooper, Tanaka, Ward, Weidenschilling   +19 more
core   +3 more sources

Observational diagnostics of gas in protoplanetary disks

, 2009
Protoplanetary disks are composed primarily of gas (99% of the mass). Nevertheless, relatively few observational constraints exist for the gas in disks. In this review, I discuss several observational diagnostics in the UV, optical, near-IR, mid-IR, and (
A. Carmona, A. Carmona, A. Carmona, A. Carmona, A. Dutrey, A. Dutrey, A. Dutrey, A. Lecavelierdes Etangs, A. Lecavelierdes Etangs, A. Natta, A. Natta, A. Roberge, A. Roberge, A. Sicilia-Aguilar, A.E. Glassgold, A.M. Mandell, Andrés Carmona, B. Acke, B. Acke, C. Espaillat, C. Martin, C. Martin-Zaïdi, C. Martin-Zaïdi, C. Martin-Zaïdi, C. Martin-Zaïdi, C. Salyk, C. Salyk, C.A. Grady, C.J. Chandler, D. Hollenbach, D. Hollenbach, D.A. Weintraub, D.A. Weintraub, D.R. Ardila, D.W. Koerner, E. Bergin, E. Tatulli, E. Wilkinson, E.A. Bergin, E.I. Chiang, E.L. Gibb, E.L. Gibb, F. Lahuis, F. Lahuis, F.M. Walter, G. Meeus, G. Plas van der, G. Plas van der, G.A. Blake, G.J. Herczeg, G.J. Herczeg, G.J. Herczeg, G.J. Herczeg, G.J. Herczeg, G.W. Doppmann, H. Nomura, H. Nomura, H.J. Langevelde van, I Pascucci, I. Pascucci, I. Pascucci, I. Sheret, J. Muzerolle, J. Muzerolle, J. Muzerolle, J. Najita, J. Najita, J. Najita, J.-C. Bouret, J.A. Valenti, J.E. Gizis, J.M. Brown, J.R. Najita, J.R. Najita, J.R. Najita, J.S. Bary, J.S. Bary, J.S. Bary, J.S. Carr, J.S. Carr, J.S. Carr, J.S. Carr, J.S. Carr, J.S. Carr, K. France, K.E. Haisch Jr., K.M. Pontoppidan, L. Errico, L. Hartmann, L.A. Cieza, M. Goto, M. Gustafsson, M.A. Bitner, M.E. Ancker van den, M.F. Skrutskie, M.G. Berthoud, M.J. Richter, N. Calvet, N. Scoville, R Boekel van, R. Meijerink, R.D. Alexander, R.L. Akeson, R.L. Akeson, S. Beckwith, S. Brittain, S. Guilloteau, S. Guilloteau, S. Sako, S.D. Brittain, S.D. Brittain, S.D. Brittain, S.D. Brittain, S.J. Shukla, S.K. Ramsay Howat, S.M. Andrews, S.V.W. Beckwith, T.L. Beck, T.R. Geballe, T.W. Rettig, T.W. Rettig, U. Gorti, V. Mannings, V. Piétu, W.-F. Thi, W.-F. Thi, W.-F. Thi, W.F. Thi, W.R.F. Dent, Y. Itoh   +129 more
core   +2 more sources