Results 101 to 110 of about 35,614 (300)

Stellar Growth by Disk Accretion: The Effect of Disk Irradiation on the Protostellar Evolution

The Astrophysical Journal, 2008
Young stars are expected to gain most of their mass by accretion from a disk that forms around them as a result of angular momentum conservation in the collapsing protostellar cloud. Accretion initially proceeds at high rates of 10^{-6}-10^{-5} M_Sun/yr resulting in strong irradiation of the stellar surface by the hot inner portion of the disk and ...
openaire   +2 more sources

Sustainable Catalyst‐Free PLG Networks: Recyclability, Biodegradability, and Functional Performance

Advanced Functional Materials, EarlyView.
A catalyst‐additive free covalent adaptable network is developed from star‐shaped poly(lactide‐co‐glycolide) cross‐linked with pyromellitic dianhydride, enabling internal carboxylic acid‐driven transesterification. The resulting biodegradable network exhibits mechanical robustness (Young's modulus ≈1.6 GPa), complete recyclability, rapid biodegradation
Lars Schwarzer, Emilia Fulajtar, Seema Agarwal   +2 more
wiley   +1 more source

Using the Ca ii Lines in T Tauri Stars to Infer the Abundance of Refractory Elements in the Innermost Disk Region

The Astrophysical Journal
We present a study of the abundance of calcium in the innermost disk of 70 T Tauri stars in the star-forming regions of Chamaeleon I, Lupus, and Orion OB1b. We use calcium as a proxy for the refractory material that reaches the inner disk.
Marbely Micolta, Nuria Calvet, Thanawuth Thanathibodee, Gladis Magris C., Carlo F. Manara, Laura Venuti, Juan Manuel Alcalá, Gregory J. Herczeg   +7 more
doaj   +1 more source

The Dispersal of Planet-forming discs: Theory confronts Observations

, 2017
Discs of gas and dust around Myr-old stars are a by-product of the star formation process and provide the raw material to form planets. Hence, their evolution and dispersal directly impact what type of planets can form and affect the final architecture ...
Ercolano, Barbara, Pascucci, Ilaria
core   +1 more source

Wind accretion by a binary stellar system and disc formation [PDF]

Monthly Notices of the Royal Astronomical Society, 2004
I calculate the specific angular momentum of mass accreted by a binary system embedded in the dense wind of a mass losing asymptotic giant branch star. The accretion flow is of the Bondi-Hoyle-Lyttleton type. For most of the relevant parameters space the flow is basically an isothermal high Mach number accretion flow. I find that when the orbital plane
openaire   +2 more sources

Dual‐Layer Living Hydrogel Enables On‐Demand Delivery of Phages and Probiotics for Synergistic Wound Infection Therapy

Advanced Functional Materials, EarlyView.
A dual‐layer living hydrogel, ProΦGel, integrates bacteriophages and probiotics for synergistic wound infection therapy. The outer gelatin‐based matrix releases phages on demand in response to P. aeruginosa infections, while inner alginate beads sustain probiotic delivery.
Siyuan Tao, Darine D'Adam, Anna Hu, Sixuan Zhang, Josua Roduner, Katharina Maniura‐Weber, Qun Ren   +6 more
wiley   +1 more source

Probing the History of the Galaxy Assembly of the Counterrotating Disk Galaxy PGC 66551

The Astrophysical Journal
Stellar counterrotation in disk galaxies directly relates to the complex phenomenon of the disk mass assembly believed to be driven by external processes, such as accretion and mergers.
Ivan Yu. Katkov, Damir Gasymov, Alexei Yu. Kniazev, Joseph D. Gelfand, Evgenii V. Rubtsov, Igor V. Chilingarian, Olga K. Sil’chenko   +6 more
doaj   +1 more source

Menus for Feeding Black Holes

, 2013
Black holes are the ultimate prisons of the Universe, regions of spacetime where the enormous gravity prohibits matter or even light to escape to infinity.
A. Burrows, A. Escala, A. Heger, A. Loeb, A.I. MacFadyen, A.P. Schoenmakers, B. Carter, B. Kocsis, B. Kocsis, B. Kocsis, B. Kocsis, B. Kocsis, B. McKernan, B.A. Fryxell, C. Rodriguez, C. Roedig, C.D. Dermer, C.L. Fryer, D. Merritt, D.N. Burrows, E.C. Ostriker, F. Civano, F. De Colle, F. Hoyle, F. Pretorius, F.D. Lora-Clavijo, F.K. Liu, F.K. Liu, G. Bertone, G. Bertone, G. Fabbiano, G. Lodato, G. Lodato, H. Baumgardt, H. Bondi, H. Bondi, H. Sudou, H.-J. Grimm, I. Mandel, I.D. Novikov, J. Binney, J. Cuadra, J. Frank, J. Goodman, J. Goodman, J. Guilet, J. Guillochon, J. Miralda-Escudé, J. Wang, J.-M. Shi, J.A. Regan, J.G. Baker, J.M. Blondin, J.M. Blondin, J.S.B. Wyithe, J.S.B. Wyithe, J.S.B. Wyithe, K. Belczynski, K. Hayasaki, K. Kotake, K. Nakayama, K.A. Postnov, K.S. Thorne, L. Ballo, L. Blecha, L.E. Strubbe, L.L. Cowie, M. Campanelli, M. Dijkstra, M. Eracleous, M. Freitag, M. Kesden, M. Kesden, M. MacLeod, M. Milosavljević, M. Ruffert, M. Ruffert, M. Saijo, M. Ugliano, M.C. Begelman, M.C. Begelman, M.C. Miller, M.J. Rees, M.J. Rees, M.P. Muno, M.R. Krumholz, M.R. Krumholz, N. Roos, N. Soker, N. Soker, N. Stone, N. Stone, N. Webb, N.I. Shakura, O. Zanotti, P. Goldreich, P. Madau, P. Madau, P. Ranalli, P.B. Ivanov, P.C. Fragile, R. Fernández, R. Haas, R. Narayan, R. Narayan, R. Narayan, R.M. O’Leary, R.M. O’Leary, R.M. O’Leary, R.N. Lang, S. Bianchi, S. Chandrasekhar, S. Gezari, S. Komossa, S. Komossa, S. Mineo, S. Rosswog, S. van Velzen, S.B. Cenko, S.C. Noble, S.F. Portegies Zwart, S.F. Portegies Zwart, S.L. Shapiro, S.L. Shapiro, S.W. Davis, T. Foglizzo, T. Foglizzo, T. Tanaka, U. Anzer, V. Bromm, V. Bromm, V. Paschalidis, X. Chen, Y. Levin, Y. Rephaeli, Y. Shen, Z. Haiman   +136 more
core   +1 more source

High‐Resolution and Real‐Time In Situ Generation of Cellular Spheroids by Laser‐Assisted Bioprinting for Guided Microvascularization

Advanced Functional Materials, EarlyView.
Micro‐injection laser‐assisted bioprinting enables ultrafast and precise patterning of small endothelial cell spheroids by injecting a highly concentrated single‐cell suspension into GelMA/ColMA hydrogels. In co‐culture with fibroblasts, controlled pre‐vasculogenic network formation is obtained at microscale resolution.
Charles Handschin, Katharina Wulz, Clotilde Jugie, Marie‐Laure Stachowicz, Shane Fennell, Aurélien Mazet, Malou Lea, Nathalie Dusserre, Jean‐Christophe Fricain, Hugo Oliveira   +9 more
wiley   +1 more source

Properties of Circum(sub)stellar Accretion Disks

, 2002
We have completed a systematic survey for disks around young brown dwarfs and very low mass stars. By choosing a well-defined sample and by obtaining sensitive thermal IR observations, we can make an unbiased measurement of the disk fraction around such low mass objects.
Liu, Michael C., Tokunaga, Alan T., Najita, Joan   +2 more
openaire   +1 more source