... 000, 1­12 (2009) Printed 11 February 2010 A (MN L TEX style file v2.2) Analytical approximations of K -corrections in optical and near-infrared bands I1gor V. Chilingarian1 2 ,2,3 , Anne-Laure Melchior 1,4 and Ivan Yu. ... Received 2010 February 01; in original form 2009 August 14 ABSTRACT To compare photometric properties of galaxies at different redshifts, the fluxes need to be corrected for the changes of effective rest-frame wavelengths of filter bandpasses, called K -corrections. ... Table 1. ...

Atm 2 ospheric time constant with MASS and FADE 0 A. Tokovinin CTIO, Chile Adaptive Optics time constant 0 = 0.314 r0/V0 = 0.057 6/5 [ Cn2(h) V5/3(h) dh MASS time constant: 0, MASS, Numerical simulation 1. Set turbulent layer strength (seeing) & sp. response Definition (1 rad phase difference between wavefronts at t= 0) ] 3/5 = 0.175 (2 DESI ) 3/5 ; 2 DESI = < [ IA(1ms)/ IA(3ms) ] >2 0, MASS, This is an approximation! ... The MASS method is approximate! ...

... 5-GHz total flux density . ... VLBApls image at 5 GHz . ... Correlated flux density (Jy) vs. projected baseline length plot . ... flux density (Jy) . EW position (mas) . ... major axis (mas) . ... Other VLBI references . 1.6 GHz: VLBI image is published in the Caltech-Jodrell Bank Flat Spectrum Survey (CJF, Taylor et al. 1996, ApJS 107, 37) . 2.3 and/or 8.4 GHz: VLBI images are available in the USNO Radio Reference Frame Image Database (RRFID, Fey & Charlot 2000, ApJS 128, 17) . ...

... We present a new technique to segregate old and young stellar populations in galactic spectra using machine learning methods. We used an ensemble of classifiers, each classifier in the ensemble specializes in young or old populations and was trained with locally weighted regression and tested using ten-fold cross-validation. ... In this work we propose a Machine Learning (ML) method to determine the age of stellar populations in synthetic galactic spectra. ... Combine results in an ensemble. ...

DIMM . ... MASS/DIMM 2007 ­ 2009 MASS DIMM. ... D = 0.09 , B = 0.2 r0 = 0.1 . ... 5 , d, : + 2 dz Cn (z ) в 0.009687 - 2 = 0 dfx dfy (fx , fy )f -11/3 cos2 ( z f 2 ). (1 0 ) 1.0 2.0 0.9 1.9 2 / (0) 2 0.7 2 0.8 l / 2 t 1.8 1.7 0.6 0 5 10 15 20 25 1.6 0 5 10 15 20 25 H, km H, km . ... Wlgt (0) , 7 1.0 6в10 4в10 2в10 -13 0.8 -13 -13 P( l/ t) 0.6 -1/3 2 JGL,m 0 -2в10 -13 2 0.4 -4в10 0.2 -13 -6в10 -13 0.0 1.0 1.2 1.4 1.6 2 -8в10 1.8 2 t -13 2.0 2.2 2.4 -14 -13.5 -13 16 -12.5 l / log J 2 . ... dimm . ...