NASA Atlas of infrared solar spectrum, report 3, number 125

Infrared solar photometric tracings including telluric lines taken by CV-990 aircraf

EU-India free trade agreement : a quantitative assessment

This report analyses the effects of a regional trade agreement (FTA) between the EU and India, for which negotiations are underway. The study starts with abrief overview of the key insights from the existing literature on FTAs and their relationship with multilateral negotiations. The remainder of the study is devoted to analysing the impact of tariff slashes under an FTA on merchandise trade between the EU and India. Of particular interest are the implications for agricultural markets, given the tension between agricultural liberalisation and India's policy goals relating to self-sufficiency in food grains and poverty reduction. The analysis employs GTAP, a global general equilibrium model using a recent database which has 2004 as its reference year. The results suggest that India's interests in a regional trade agreement with the EU are downplayed by the fact that India's economy is not well integrated in global markets. Impacts on the EU are minor and further reduced if a Doha agreement is in place when the FTA is implemented. Results indicate the rationale for a strongly asymmetric arrangement: it would be in the interest of both partners if the EU provides large concessions to India for market access, while India maintains the bulk of current border protection. An EU - India FTA delivers little scope for achieving efficiency gains via adjustments to the pattern of international specialisation. An EU - India agreement on merchandise trade is unlikely to embody substantial preferential treatment with regard to market access. Probably, India can find more suitable FTA partners. Agriculture is a key sector for India in the consideration of equity and growth purposes of a FTA with EU

Calibration of weak 1.4 and 1.9 mu water-vapor absorptions

Calibration of water absorption bands in near infrared regio

Arizona-NASA Atlas of infrared solar spectrum, a preliminary report, number 123

Photometric tracings of infrared solar spectrum from NASA CV-990 jet during July-August 196

A search for 183-GHz emission from water in late-type stars

A search was made for 183 GHz line emission from water vapor in the direction of twelve Mira and two semiregular variables. Upper limits to the emission are in the range of 2000 to 5000 Jy. It is estimated that thermal emission from the inner regions of late type stellar envelopes will be on the order of ten Jy. Maser emission, according to one model, would be an order of magnitude stronger. From the limited set sampled, the possibility of very strong maser emission at 183 GHz cannot yet be ruled out

Solar comparison spectra, 1.0-2.5 mu, from altitudes 1.5-12.5 km

Solar and telluric infrared spectra from altitudes between 1.5 and 12.5 k

Hydrodynamics of embedded planets' first atmospheres - III. The role of radiation transport for super-Earth planets

The population of close-in super-Earths, with gas mass fractions of up to 10% represents a challenge for planet formation theory: how did they avoid runaway gas accretion and collapsing to hot Jupiters despite their core masses being in the critical range of $M_\mathrm{c} \simeq 10 M_\mathrm{\oplus}$? Previous three-dimensional (3D) hydrodynamical simulations indicate that atmospheres of low-mass planets cannot be considered isolated from the protoplanetary disc, contrary to what is assumed in 1D-evolutionary calculations. This finding is referred to as the recycling hypothesis. In this Paper we investigate the recycling hypothesis for super-Earth planets, accounting for realistic 3D radiation hydrodynamics. Also, we conduct a direct comparison in terms of the evolution of the entropy between 1D and 3D geometries. We clearly see that 3D atmospheres maintain higher entropy: although gas in the atmosphere loses entropy through radiative cooling, the advection of high entropy gas from the disc into the Bondi/Hill sphere slows down Kelvin-Helmholtz contraction, potentially arresting envelope growth at a sub-critical gas mass fraction. Recycling, therefore, operates vigorously, in line with results by previous studies. However, we also identify an "inner core" -- in size $\approx$ 25% of the Bondi radius -- where streamlines are more circular and entropies are much lower than in the outer atmosphere. Future studies at higher resolutions are needed to assess whether this region can become hydrodynamically-isolated on long time-scales.Comment: 16 pages, 12 figures, accepted for publication at MNRA

183 GHz water line variation: An energetic outburst in orion KL

Observations of the 3(13)-2(20) transition of water vapor in the direction of Ori MC1 in 1980 February show a 50% flux increase and an apparent additional red shift of approximately 2 km/s relative to the line observed in 1977 December. From a detailed examination of the amplitude and frequency calibration, it appears unlikely that the effect is due to systematic error. The increase is attributed to the appearance of a new component at a velocity of 12 km/s with respect to the local standard of rest. The new component also has broad wings. Increased emission from a region in the high-velocity core of Ori MC1 can be due either to additional far-IR radiation to pump the 1983 GHz transition or to a change in the physical conditions in the gas. Statistical equilibrium calculations using the large-velocity-gradient formalism were carried out to develop a model for the emission. The calculations support a model in which the gas in the region of enhanced emission is hotter than the dust. The temporal coincidence between the 183 GHZ increase and the 22 GH1 water maser outburst suggests a common, impulsive cause, which has heated the gas in a part of the HV source, enhancing the emission in both transitions