Titlebook: Infrared Extinction and Standardization; Proceedings of two S E. F. Milone Conference proceedings 1989 Springer-Verlag Berlin Heidelberg 19

STING

拾落穗

有毛就脱毛

Near-infrared extinction measurements at the Indian observatory sites,are 0.15 mag, 0.07 mag and 0.09 mag respectively. These are in general agreement with the theoretical extinction coefficients calculated by Manduca ana Bell (1979) for 5 m m atmospheric water vapour and the Kitt Peak J H K filters. The details of the transformation from instrumental system to standard system are also discussed.

Embolic-Stroke

Extinction and transformation,ne absorption rather than continuous scattering dominates the extinction. Not only does this extinction change very rapidly with wavelength (so that stellar color becomes only weakly correlated with effective extinction), but also many of the lines are saturated (so that Forbes‘s curve-of-growth eff

含水层

Models of infrared atmospheric extinction,rity in a magnitude/air mass plot are small even though the linear extrapolation to zero air mass produces a value much different than the models predict. The cause of this effect is discussed. It appears that direct verification of the non-linearity predicted by the models will be difficult to obta

做事过头

隐士

Near-infrared extinction measurements at the Indian observatory sites,e Indian Institute of Astrophysics Observatory, Kavalur (78°.83 E; 12°.58 N) using liquid nitrogen cooled InSb photometers developed at the Physical Research Laboratory (PRL), Ahmedabad. Using the observations of the standard stars from the list of Johnson et al (1966) the JHKL photometric system of

Hippocampus

Reducing photometry by computing atmospheric transmission, and the abundance versus height of components that vary, such as water vapor and particulates. Photometric observations can be modelled and reduced using the measured instrumental bandpasses and the computed transmission. This method of reduction will greatly improve the quality of infrared photome

公猪

JHKLM photometry: Standard systems, passbands and intrinsic colors,e transformation between the J-K, J-H, H-K, and K-L colors in the different systems. A homogenized system, essentially the Johnson-Glass system is proposed and its absolute calibration derived based on the Bell model atmosphere fluxes for Alpha Lyrae. The homogenized colors of the standard stars wer

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