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Circumstellar Disks

Multiwavelength Observations of Young Stars and Their Circumstellar Disks

Multiwavelength Observations of Young Stars and Their Circumstellar Disks

... of circumstellar gas is also very important to the chemical evolution of disks; this heating and ionization provides both catalysts for chemical reactions and a stronger interaction with the protostellar ...

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A search for accreting young companions embedded in circumstellar disks. High-contrast Hα imaging with VLT/SPHERE

A search for accreting young companions embedded in circumstellar disks. High-contrast Hα imaging with VLT/SPHERE

... Imaging in Hα is one of the promising techniques to detect forming planets at very small separations. In this context, the SPHERE / ZIMPOL instrument will play a major role in investi- gating local accretion signatures ...

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Mid-infrared sizes of circumstellar disks around Herbig Ae/Be stars measured with MIDI on the VLTI

Mid-infrared sizes of circumstellar disks around Herbig Ae/Be stars measured with MIDI on the VLTI

... the circumstellar disks surrounding Herbig Ae / Be ...(self-shadowed) disks for sources with strong or moderate mid-infrared excess, ...hydrostatic disks made to fit the SEDs of the observed ...

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Polarimetric imaging of circumstellar disks. I. Artifacts due to limited angular resolution

Polarimetric imaging of circumstellar disks. I. Artifacts due to limited angular resolution

... observe circumstellar disks around other ...erent circumstellar systems can provide us with information of how and where planets form in ...in disks are an excellent approach to detect disk ...

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Molecular Spectroscopy of Planet-Forming Regions in Circumstellar Disks

Molecular Spectroscopy of Planet-Forming Regions in Circumstellar Disks

... the disks of gas and dust that form around collapsing protostars as a consequence of angular momentum ...conservation. Circumstellar disks and planetary systems are both well-studied, and the set of ...

203

Submillimeter lines from circumstellar disks around pre-main sequence stars

Submillimeter lines from circumstellar disks around pre-main sequence stars

... Circumstellar disks play an essential role in the under- standing of the formation of planetary systems such as our own (see Beckwith 1999; Beckwith & Sargent 1996 for recent ...protoplanetary ...

15

On the gas temperature in circumstellar disks around A stars

On the gas temperature in circumstellar disks around A stars

... these circumstellar disks, gas and dust are momentum coupled (Gilman 1972) and we assume that all the momentum gained by the grains from the radi- ation field is transferred to the gas by ...

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Brown dwarf disks with ALMA : evidence for truncated dust disks in Ophiuchus

Brown dwarf disks with ALMA : evidence for truncated dust disks in Ophiuchus

... menting circumstellar disks (Stamatellos & Whitworth ...of circumstellar accretion disks around young BDs, but the current generation of numerical models is still unable to reliably ...

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Grain Growth in Protoplanetary Disks

Grain Growth in Protoplanetary Disks

... This adventure in astronomy would not have been possible without the tremendous amount of encouragement, motivation, and inspiration that I received throughout the years from my dear family and friends, from scientific ...

179

Tracing the envelopes around embedded low-mass young stellar objects with HCO+ and millimeter continuum observations

Tracing the envelopes around embedded low-mass young stellar objects with HCO+ and millimeter continuum observations

... The aim of this paper, the Ðrst in a series, is to investigate the evolution of the mass and density structure of the envelope using both continuum and line observations. The results will be tested against one of the ...

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Grellmann, Rebekka
  

(2012):


	Massive star formation as seen by infrared long-baseline interferometry.


Dissertation, LMU München: Fakultät für Physik

Grellmann, Rebekka (2012): Massive star formation as seen by infrared long-baseline interferometry. Dissertation, LMU München: Fakultät für Physik

... of circumstellar disks. Circumstellar disks are important for the star formation process as they can take over part of the angular momentum of the molecular cloud, are part of the jet and ...

149

Radial structure in the TW Hya circumstellar disk

Radial structure in the TW Hya circumstellar disk

... primordial circumstellar disks is a key input to understanding the process of planet formation in these ...transition disks and are roughly defined as having an opacity deficit in the inner disk with ...

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Interferometry and the study of protoplanetary disks

Interferometry and the study of protoplanetary disks

... The sub-millimetre to radio region of the spectrum provides access to many important diagnostics of both the gas and dust content of protoplanetary disks. Dust continuum in the millimetre regime is usually ...

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Brown Dwarf Disks with ALMA

Brown Dwarf Disks with ALMA

... three disks surround- ing young brown dwarfs and very low mass stars in the Taurus star forming ...three disks, while CO(J = 3 − 2) emission is seen in two ...the disks physical structure in ...the ...

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A study of Vega-like stars and their circumstellar dust

A study of Vega-like stars and their circumstellar dust

... Concentrating on the mid-IR excess, fits for aU grain sizes were once again found (Table 7.4). Not all fits were perfect, but the “best-fit” models for each grain size are shown in Figure 7.10. In aU but two cases (1mm ...

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A REVIEW ON BLISK TECHNOLOGY

A REVIEW ON BLISK TECHNOLOGY

... Copyright to IJIRSET www.ijirset.com 1356 On the other hand, the design constrains for disks and blades are different. Whereas high tensile strength and low cycle fatigue resistance are the most relevant ...

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Consistent dust and gas models for protoplanetary disks IV. A panchromatic view of protoplanetary disks

Consistent dust and gas models for protoplanetary disks IV. A panchromatic view of protoplanetary disks

... The multiwavelength datasets available through the DIANA Object Database repository are processed end-products, as opposed to raw data, that can be directly compared to models. Deriving meaningful physical quantities ...

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ecdf921be8a775c639191e231abd72943be7e5e2.pdf

ecdf921be8a775c639191e231abd72943be7e5e2.pdf

... Detailed abundance studies of highly polluted dusty white dwarfs are the most sensitive probes of rocky exoplanetary systems. The combination of optical spectroscopy with large ground-based telescopes and ultraviolet ...

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Bell Technologies MPE 386 System Guide 1987 pdf

Bell Technologies MPE 386 System Guide 1987 pdf

... In the AT standard peripheral functions such as video display monitors, floppy disks and hard disks are provided by a combination of circuit cards which plug into the system board's expa[r] ...

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Temporal Association of Annular Tears and Nuclear Degeneration: Lessons from the Pediatric Population

Temporal Association of Annular Tears and Nuclear Degeneration: Lessons from the Pediatric Population

... 156 disks were examined. One reader evaluated the disks between the T12 and S1 segments for the presence of annular tears and their conspicuity and noted whether a given annular tear had characteristics of ...

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