Eso Astrophysics Symposia
European Southern Observatory
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Article
Open AccessFuture Ground-Based Solar System Research: a Prospective Workshop Summary
The article tries to provide a perspective summary of the planetary science to be performed with future extremely large telescopes (ELTs) as an outcome of the workshop on ‘Future Ground-based Solar System Rese...
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Book Series
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Book and Conference Proceedings
Deep Impact as a World Observatory Event: Synergies in Space, Time, and Wavelength
Proceedings of the ESO/VUB Conference held in Brussels, Belgium, 7-10 August 2006
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Chapter and Conference Paper
Near-IR Spectroscopy of Blue Supergiants
Diffraction-limited observations with the E-ELT will make blue supergiants accessible to intermediate-resolution spectroscopy in galaxies out to the Virgo and Fornax clusters. BA-type supergiants (BA-SGs) will...
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Chapter and Conference Paper
Dynamical Modeling of the Deep Impact Dust Ejecta Cloud
The collision of Deep Impact with comet 9P/Tempel 1 generated a bright cloud of dust which dissipated during several days after the impact. The brightness variations of this cloud and the changes of its positi...
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Chapter and Conference Paper
The Experience from VISIR and the Design of an ELT Mid-infrared Instrument
VISIR is the VLT mid-infrared (mid-IR) Imager and Spectrometer. It provides data at high spatial and spectral resolution in the N (8–13 μm) and Q (16–20 μm) atmospheric windows. VISIR observations have provide...
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Chapter and Conference Paper
CASIS: Cassegrain Adaptive-Optics Simultaneous Imaging System for the VLT
The VLT Unit telescope 4 will be equipped in 2013 with an Adaptive Optics (AO) Facility, replacing the current secondary mirror of the telescope with an adaptive one. The AO Facility will allow high order AO c...
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Chapter and Conference Paper
The Dusty View of DI from ESO Chile
Around the time of the impact of NASA’s Deep Impact (DI) mission at comet 9P/Tempel 1, in total 6 telescopes with altogether 7 different instruments, located at the La Silla (LSO) and Paranal (VLT) Observatori...
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Chapter and Conference Paper
Serendipitous Occultation of U0975-07195164 by 9P/Tempel 1 Witnessed from LaSilla
Comet 9P/Tempel 1 was systematically monitored by ESO after re- appearance in January 2005. Routinely various narrow-band filters in the 10 $\umu$m window were used with TIMMI2 at ESO’s 3.6 m telescope. Quasi-...
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Chapter and Conference Paper
Quantitative Near-IR Spectroscopy of OB Stars
Massive OB-type stars are associated with star-formation regions. Their high luminosity allows us to derive present-day chemical abundances over large distances, in the Milky Way and the Magellanic Clouds. We ...
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Chapter and Conference Paper
Infrared Spectrograph Calibration Issues: Using CRIRES, the High Resolution Infrared Spectrograph for ESO’s VLT as an Example
CRIRES, a pre-dispersed CRyogenic Infrared Echelle Spectrograph, provides a resolving power λ/ Δ λ ≈ 10^5 (or Δ v ≈ 1.5 km,s-1 per pixel) between 1000 and 5000 nm (56–315, THz) at the 8m ESO VLT-UT 1. CRIRES is a...
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Chapter and Conference Paper
Calibration Sources for CRIRES
We report on our efforts to provide high accuracy wavelength calibration to the scientific observations with the Cryogenic High-Resolution IR Echelle Spectrograph (CRIRES), ESO’s new high resolution (R≈100,000...
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Chapter and Conference Paper
A new Generation of Spectrometer Calibration Techniques Based on Optical Frequency Combs
Typical astronomical spectrographs have a resolution λ/°λ ranging between a few hundred to 200,000. Deconvolution and correlation techniques are being employed with a significance down to 1/1000th of a pixel. ...
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Chapter and Conference Paper
Isotopic Abundances in RGB- and AGB-Stars
Asymptotic Giant Branch stars contribute significantly to the chemical evolution of their host galaxies. All stars with a main-sequence mass ≤ 8M⊙ will return eventually 30-80% of their mass to the interstellar m...
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Article
Infrared Observations Of Dust Emission From Comet Hale-Bopp
We present infrared imaging and photometry of the bright, giant comet C/1995 O1 (Hale-Bopp). The comet was observed in an extended infrared and optical observing campaign in 1996–1997. The infrared morphology ...
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Chapter and Conference Paper
Observations of Gas and Dust in Compact Planetary Nebulae by Imaging and Long Slit Spectroscopy at λ ≈ 10μm
A variety of compact nebulae was observed to retrieve the morphology in the light of infrared recombination lines ([SIV] at λ = 10.5 μm and [NeII] at λ = 12.8μm) using TIMMI, ESO’s focal reducer for the therma...
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Article
Sio observations of mass-losing AGB stars
We have observed the first overtone rotation-vibration absorption bands of SiO near λ = 4µm for a sample of 23 oxygen-rich Mira and Semiregular variables using the ESO NTT and IRSPEC. We discuss the strength of t...
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Chapter and Conference Paper
The Asymptotic Giant Branch in the LMC, SMC and the Galactic Center
Mass loss on the AGB is extremely important for galactic chemical evolution but is poorly understood. A data set of a coherently selected sample of AGB stars is required to resolve this issue. The VLT with its...
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Chapter and Conference Paper
SiO Observations of Mass-Losing AGB Stars
We have observed the first overtone rotation-vibration absorption bands of SiO near λ = 4µm for a sample of 23 oxygen-rich Mira and Semiregular variables using the ESO NTT and IRSPEC. We discuss the strength of t...
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Article
New 8–13 μm Si:Ga/DRO hybrid arrays for very large telescopes
Since 1984, the CEA-LETI-LIR (Infrared Laboratory) has been involved in development of Si:Ga/DRO hybrid detector arrays dedicated to imaging of astronomical sources in the 8–13 μm range. Successively, 32×32 el...
