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The SAURON project - I. The panoramic integral-field spectrograph
Emsellem, Eric; Miller, Bryan W.; Carollo, C. M. +10 more
A new integral-field spectrograph, SAURON, is described. It is based on the TIGER principle, and uses a lenslet array. SAURON has a large field of view and high throughput, and allows simultaneous sky subtraction. Its design is optimized for studies of the stellar kinematics, gas kinematics, and line-strength distributions of nearby early-type gal…
Introduction: The Cluster mission
Escoubet, C. P.; Goldstein, M.; Fehringer, M.
The Cluster mission, ESA’s first cornerstone project, together with the SOHO mission, dating back to the first proposals in 1982, was finally launched in the summer of 2000. On 16 July and 9 August, respectively, two Russian Soyuz rockets blasted off from the Russian cosmodrome in Baikonour to deliver two Cluster spacecraft, each into their proper…
The XMM-Newton optical/UV monitor telescope
Carter, M.; Pandel, D.; Ho, C. +16 more
The XMM-OM instrument extends the spectral coverage of the XMM-Newton observatory into the ultraviolet and optical range. It provides imaging and time-resolved data on targets simultaneously with observations in the EPIC and RGS. It also has the ability to track stars in its field of view, thus providing an improved post-facto aspect solution for …
The Stellar Populations and Evolution of Lyman Break Galaxies
Papovich, Casey; Dickinson, Mark; Ferguson, Henry C.
Using deep near-infrared and optical observations of the Hubble Deep Field-North from the Hubble Space Telescope NICMOS and WFPC2 instruments and from the ground, we examine the spectral energy distributions (SEDs) of Lyman break galaxies (LBGs) at 2.0<~z<~3.5 in order to investigate their stellar population properties. The ultraviolet-optic…
ISO spectroscopy of circumstellar dust in 14 Herbig Ae/Be systems: Towards an understanding of dust processing
Waters, L. B. F. M.; van den Ancker, M. E.; Meeus, G. +3 more
We present Infrared Space Observatory (ISO) spectra of fourteen isolated Herbig Ae/Be (HAEBE) stars, to study the characteristics of their circumstellar dust. These spectra show large star-to-star differences, in the emission features of both carbon-rich and oxygen-rich dust grains. The IR spectra were combined with photometric data ranging from t…
The O-Na and Mg-Al anticorrelations in turn-off and early subgiants in globular clusters
Pasquini, L.; Bonifacio, P.; Grundahl, F. +16 more
High dispersion spectra (R>~ 40 000) for a quite large number of stars at the main sequence turn-off and at the base of the giant branch in NGC 6397 and NGC 6752 were obtained with the UVES on Kueyen (VLT UT2). The [Fe/H] values we found are -2.03+/- 0.02+/- 0.04\ and -1.42+/- 0.02+/- 0.04\ for NGC 6397 and NGC 6752 respectively, where the firs…
An Empirical Ultraviolet Template for Iron Emission in Quasars as Derived from I Zwicky 1
Vestergaard, M.; Wilkes, B. J.
We present an empirical template spectrum suitable for fitting and subtracting/studying the Fe II and Fe III emission lines in the rest frame ultraviolet spectra of quasars and active galactic nuclei, the first empirical ultraviolet iron template to cover the full range of 1250-3090 Å. Iron emission is often a severe contaminant in optical-ultravi…
Hubble Space Telescope Time-Series Photometry of the Transiting Planet of HD 209458
Burrows, Adam; Gilliland, Ronald L.; Charbonneau, David +2 more
We have observed four transits of the planet of HD 209458 using the STIS spectrograph on the Hubble Space Telescope (HST). Summing the recorded counts over wavelength between 582 and 638 nm yields a photometric time series with 80 s time sampling and relative precision of about 1.1×10-4 per sample. The folded light curve can be fitted w…
X-ray imaging-spectroscopy of Abell 1835
Kaastra, J. S.; Arnaud, M.; Fabian, A. C. +6 more
We present detailed spatially-resolved spectroscopy results of the observation of Abell 1835 using the European Photon Imaging Cameras (EPIC) and the Reflection Grating Spectrometers (RGS) on the XMM-Newton observatory. Abell 1835 is a luminous (1046 ergs {s}-1), medium redshift (z=0.2523), X-ray emitting cluster of galaxies.…
Infrared Space Observatory's Discovery of C4H2, C6H2, and Benzene in CRL 618
Waters, L. B. F. M.; Cernicharo, José; Tielens, A. G. G. M. +4 more
We report on the detection with the Infrared Space Observatory (ISO), for the first time in the circumstellar medium, of the polyacetylenic chains C4H2 and C6H2 and of benzene (C6H6) in the direction of the proto-planetary nebula CRL 618. Surprisingly, the abundances of di- and tria…