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Ewine van Dishoeck's visit to DARK
Ewine van Dishoeck at DARK
Ewine van Dishoeck (Leiden, MPE Garching)
visited Niels Bohr Institute and DARK 23-24th April, 2008.
A lecture was held at HCØ on 23rd and talk here at Rockefeller on the 24th:
Abstract from the talk:
Evolution of star- and planet-forming regions
From ice cold to steaming hot
-----------------------------
The earliest stages of star- and planet formation are obscured by tens to hundreds of magnitudes of extinction. Observations of the gas and dust at long wavelengths often provide the only way to obtain
information on the physical and chemical processes that occur deep inside these regions. In this talk, an overview of Spitzer and VLT spectroscopic observations of ices, silicates, PAHs and hot gases will be given. Spitzer has opened up the possibility to obtain high quality mid-infrared spectra for large numbers of low-mass protostars and disks around solar-mass pre-main sequence stars for the first time, whereas VLT-CRIRES and VISIR provide complementary high spatial and spectral resolution data. The results will be analyzed using models of protostellar envelopes and (flaring) disks, including those with inner holes in which planets may have formed. The diagnostic values of the various lines and bands will be emphasized, and the importance of
laboratory data to interpret them will be illustrated. The prospects
for future facilities, in particular the Herschel Space Observatory,
the James Webb Space Telescope and the Atacama Large Millimeter Array, will be discussed.
visited Niels Bohr Institute and DARK 23-24th April, 2008.
A lecture was held at HCØ on 23rd and talk here at Rockefeller on the 24th:
Abstract from the talk:
Evolution of star- and planet-forming regions
From ice cold to steaming hot
-----------------------------
The earliest stages of star- and planet formation are obscured by tens to hundreds of magnitudes of extinction. Observations of the gas and dust at long wavelengths often provide the only way to obtain
information on the physical and chemical processes that occur deep inside these regions. In this talk, an overview of Spitzer and VLT spectroscopic observations of ices, silicates, PAHs and hot gases will be given. Spitzer has opened up the possibility to obtain high quality mid-infrared spectra for large numbers of low-mass protostars and disks around solar-mass pre-main sequence stars for the first time, whereas VLT-CRIRES and VISIR provide complementary high spatial and spectral resolution data. The results will be analyzed using models of protostellar envelopes and (flaring) disks, including those with inner holes in which planets may have formed. The diagnostic values of the various lines and bands will be emphasized, and the importance of
laboratory data to interpret them will be illustrated. The prospects
for future facilities, in particular the Herschel Space Observatory,
the James Webb Space Telescope and the Atacama Large Millimeter Array, will be discussed.