Results 31 to 40 of about 36,511 (156)

First evidence for dusty disks around Herbig Be stars

open access: yes, 2003
We have carried out a high-sensitivity search for circumstellar disks around Herbig Be stars in the continuum at 1.4mm and 2.7mm using the IRAM interferometer at the Plateau de Bure (PdBI) .
A. Fuente   +10 more
core   +1 more source

Measuring the mass accretion rates of Herbig Ae/Be stars with X-shooter [PDF]

open access: yes, 2012
We present the results of our observations of eight magnetic Herbig Ae/Be stars obtained with the X-shooter spectrograph mounted on UT2 at the VLT.
Ardila   +48 more
core   +2 more sources

The First Detailed Look at a Brown Dwarf Disk

open access: yes, 2003
The combination of mid-infrared and recent submm/mm measurements allows us to set up the first comprehensive spectral energy distribution (SED) of the circumstellar material around a young Brown Dwarf.
C. P. Dullemond   +7 more
core   +1 more source

The origin of hydrogen line emission for five Herbig Ae/Be stars spatially resolved by VLTI/AMBER spectro-interferometry [PDF]

open access: yes, 2008
To trace the accretion and outflow processes around YSOs, diagnostic spectral lines such as the BrG 2.166 micron line are widely used, although due to a lack of spatial resolution, the origin of the line emission is still unclear.
A. Isella   +96 more
core   +6 more sources

Survival of the mm-cm size grain population observed in protoplanetary disks

open access: yes, 2007
Millimeter interferometry provides evidence for the presence of mm to cm size "pebbles" in the outer parts of disks around pre-main-sequence stars. The observations suggest that large grains are produced relatively early in disk evolution (< 1 Myr) and ...
A. Johansen   +56 more
core   +1 more source

Marie-Christine Natta, Baudelaire [PDF]

open access: yesStudi Francesi, 2018
Il nome di Baudelaire e talmente noto e carico di rapporti e suggestioni, specialmente nel contesto della cosiddetta “modernita”, che costituisce una sicura attrazione per un ampio pubblico. Avvalendosi della sua competenza in tema di dandysme (si ricordi almeno il libro La Grandeur sans convictions.
openaire   +2 more sources

The dusty disk around VV Ser

open access: yes, 2008
We have carried out observations at millimeter and centimeter wavelengths towards VV Ser using the Plateau de Bure Interferometer and the Very Large Array. This allows us to compute the SED from near infrared to centimeter wavelengths.
A. Fuente   +8 more
core   +1 more source

Effects of scattering and dust grain size on the temperature structure of protoplanetary discs: A three-layer approach

open access: yes, 2008
The temperature in the optically thick interior of protoplanetary discs is essential for the interpretation of millimeter observations of the discs, for the vertical structure of the discs, for models of the disc evolution and the planet formation, and ...
Akinori Oka   +24 more
core   +1 more source

POISSON project - I - Emission lines as accretion tracers in young stellar objects: results from observations of Chamaeleon I and II sources

open access: yes, 2011
We present the results of the analysis of LR optical-NIR spectra (0.6-2.4 um) of a sample 47 YSOs in the ChaI and II star-forming clouds. These data are part of the POISSON project (Protostellar Optical-Infrared Spectral Survey on NTT).
Antoniucci, S.   +10 more
core   +3 more sources

On the properties of discs around accreting brown dwarfs

open access: yes, 2010
We present a grid of models of accreting brown dwarf systems with circumstellar discs. The calculations involve a self-consistent solution of both vertical hydrostatic and radiative equilibrium along with a sophisticated treatment of dust sublimation. We
Allen   +95 more
core   +1 more source

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