protoplanetary discs
The dispersal of protoplanetary discs
... Abstract. Protoplanetary discs are a natural consequence of the star formation process and as such are ubiquitous around low-mass ...of discs being dominated by two timescales and for the final ...
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Diversity in the outcome of dust radial drift in protoplanetary discs
... Understanding the detailed outcome of the radial migration in protoplanetary discs requires numerical simulations to catch the complexity of all the processes at play (LGFM08, Birnstiel et al. 2009, 2010). ...
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Signatures of warm carbon monoxide in protoplanetary discs observed with Herschel SPIRE
... 18 protoplanetary discs, 12 around Her- big Ae/Be stars and 6 around T Tauri stars, obtained with the Herschel SPIRE (Spectral and Photometric Imaging RE- ceiver) spectrometer (∼200–700 ...in discs ...
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Two mechanisms for dust gap opening in protoplanetary discs
... dusty protoplanetary discs (ALMA Part- nership et ...in discs and in extending the the- oretical and numerical investigations conducted over the last four decades ...
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Revealing signatures of planets migrating in protoplanetary discs with ALMA multiwavelength observations
... or discs with low ...revealing protoplanetary discs with multiple rings and gaps, we suggest that Elias 24 is the best candidate for a planet migrating in the intermediate speed ...
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Imaging polarimetry for the characterisation of exoplanets and protoplanetary discs : scientific and technical challenges
... the so-called 1-meter barrier (Weidenschilling 1977, Brauer et al. 2008), where 1-m sized particles should be depleted from the disc due to “radial drift”. This mechanism is caused by the difference in velocity between ...
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Lights and shadows : multi wavelength analysis of young stellar objects and their protoplanetary discs
... One of the first attempts of variability classification was proposed by Parenago (1954), who provided a qualitative grouping in four classes based on the prevalence of bright or dim phases, as described in Weaver & ...
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The JCMT Gould Belt Survey : low mass protoplanetary discs from a SCUBA 2 census of NGC 1333
... substantial discs than the remnants around Class III weak-line sources, without the confusion of circumstellar envelopes that dominate in Class I/0 protostellar ...
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High angular resolution studies of protoplanetary discs
... circumstellar discs at millimetre wavelengths have been established as powerful probes of the bulk of the cold molecular gas and ...in discs with tapered outer density profiles (Hughes et ...
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Effects of photoevaporation on protoplanetary disc `isochrones'
... Protoplanetary discs are the site of star and planet formation, and their evolution and consequent dispersal deeply affect the formation of planetary ...of discs when their accretion rates match the ...
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Grand Challenges in Protoplanetary Disc Modelling
... of protoplanetary discs are also ex- tremely ...2014). Discs are also not necessarily in a steady state, and can be subject to a range of instabilities, such as gravitational fragmen- tation (Durisen ...
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Grand Challenges in Protoplanetary Disc Modelling
... of protoplanetary discs are also ex- tremely ...2014). Discs are also not necessarily in a steady state, and can be subject to a range of instabilities, such as gravitational frag- mentation (Durisen ...
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Imaging diagnostics for transitional discs
... To obtain the gas and dust distribution of our transitional discs, we follow the same simulation procedure used in Pinilla et al. (2012a). The results are obtained by first solving the equations for the ...
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A circumbinary protoplanetary disc in a polar configuration
... Figure 9: SPH simulations of the disc in the moderately misaligned left panels and polar right panels configurations, where each panel is separated by 100 binary orbits about 86 years in[r] ...
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The formation and stability of vortices in protoplanetary disks
... Rings and edges may form in protoplanetary disks as a result of a variety of effects. Structures of this type are expected at the boundary between so called live and dead zones. The inner live zone has ...
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Complex organic molecules in protoplanetary disks
... DCO + and DCN (see, e.g., van Dishoeck et al. 2003; Thi et al. 2004; Qi et al. 2008). Several relatively complex molecules have also been observed: H 2 CO (Dutrey et al. 1997; Aikawa et al. 2003; Thi et al. 2004; Öberg ...
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Cloning and Ectopic Expression of ScYCF1 Gene from Saccharomyces cerevisiae in Cotton
... leaf discs in transgenic plants showed that transforming the cotton with yeast ScYCF 1 improves the salt tolerance of leaf discs and plays an important role in improving the salt tolerance under high salt ...
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The Novel Use of Electrochemically Activated pH Neutral Hypochlorous Acid Solutions as Biodecontaminants for Removable PMMA Dental Prostheses
... PMMA discs were fabricated by the flask and pour technique, flask, pack and press technique and by computer aided design and computer aided manufacturing (CAD/CAM) technology, respectively, as a model to represent ...
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In vitro assessment of antibacterial potential of Fagonia schweifurthii (Zygophyllaceae) against different pathogenic bacterial species
... of discs (diameter of 6 mm) were used, i.e., standard discs (gentamicin; inhibiting the bacterial protein synthesis, flucloxacillin, ceftriaxone and vancomycin; inhibiting the bacterial cell wall ...
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Study Effect of Pads shapes on Temperature Distribution for Disc Brake Contact Surface
... This study describes an inertial dynamometer system (test rig) which has been applied to the testing of disc brake pads at different operating conditions. The test rig is equipped with several measuring instruments, and ...
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