Exoplanet atmospheres

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Band parameters and k coefficients for self-broadened ammonia in the range 4000-11000 cm-1

JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER 62:2 (1999) 193-204

Authors:

PGJ Irwin, SB Calcutt, K Sihra, FW Taylor, AL Weir, J Ballard, WB Johnston
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Integral field 3D spectroscopy: Techniques and prospects

ASTR SOC P 188 (1999) 303-313

Authors:

N Thatte, F Eisenhauer, M Tecza, S Mengel, R Genzel, G Monnet, D Bonaccini

Abstract:

The technique of integral field spectroscopy,: which provides simultaneous spectra for each pixel of a contiguous two-dimensional field of view, holds tremendous promise for improving our ability to study circumstellar environments. The technique becomes especially important at near infrared wavelengths, where rapid changes in the night sky background level limit the use of standard scanning techniques. In addition, combining the capabilities of adaptive optics systems with near infrared integral field spectrographs provides an unique way to enhance-spatial resolution for ground based observations. We present the technique of integral field spectroscopy, with special emphasis on the near infrared, and illustrate future developments by describing SINFONI, an adaptive optics assisted near infrared integral field spectrometer for the ESO VLT.
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Jovian atmospheric studies with the Galileo near infrared mapping spectrometer: An update

ADV SPACE RES 23:9 (1999) 1623-1632

Authors:

PGJ Irwin, FW Taylor, RW Carlson, KH Baines, A Weir, P Cameron-Smith, S Calcutt, T Encrenaz, P Drossart, M Roos-Serote, E Lellouch

Abstract:

In its first two years of operation since arrival at Jupiter in December 1995, the Near Infrared Mapping spectrometer (NIMS) on the Galileo orbiter spacecraft obtained extensive coverage of the planet, including detailed coverage of the north equatorial belt (NEB) 'hot spot' region and the Great Red Spot. We will present the current state of data analysis including recent results on the abundances and variability of several minor constituents (H2O, CH4, NH3, GeH4, CH3D and PH3) and the cloud structure and morphology. (C) 1999 COSPAR. Published by Elsevier Science Ltd.
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Mixing of an advected-diffused tracer in the lower stratosphere: probability distribution functions of tracer gradients and differences

12TH CONFERENCE ON ATMOSPHERIC AND OCEANIC FLUID DYNAMICS (1999) 303-306

Authors:

YY Hu, RT Pierrehumbert
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Molecular gas distribution and dynamics in the luminous merger NGC 6240

ASTROPHYS SPACE SCI 266:1-2 (1999) 157-162

Authors:

LJ Tacconi, R Genzel, M Tecza, JF Gallimore, D Downes, NZ Scoville

Abstract:

We present the results of our subarcsecond resolution interferometric observations of the 1.3 mm CO J = 2-->1 line in the luminous merger NGC 6240. Roughly half of the CO flux is contained in a rotating and highly turbulent thick disk centered between the two radio and near-infrared nuclei. In this disk the molecular gas has velocity widths which reach FWZP line widths of up to 1000 km s(-1). The mass of this gas concentration makes up between 30%-70% of the dynamical mass in this region. NGC 6240 may be in an earlier merging stage than typical ULIRGs such as Arp 220. We compare these results from NGC 6240 with those of other luminous, gas-rich interacting galaxies and mergers.
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