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Techniques and Review of Absolute Flux Calibration from the Ultraviolet to the Mid-Infrared

Gordon, Karl D.; Tremblay, P. -E.; Bohlin, Ralph C.

The measurement of precise absolute fluxes for stellar sources has been pursued with increased vigor since the discovery of the dark energy and the realization that its detailed understanding requires accurate spectral energy distributions (SEDs) of redshifted Ia supernovae in the rest frame. The flux distributions of spectrophotometric standard s…

GALFIT-CORSAIR: Implementing the Core-Sérsic Model Into GALFIT

Bonfini, Paolo

We introduce GALFIT-CORSAIR: a publicly available, fully retro-compatible modification of the 2D fitting software GALFIT (v.3) which adds an implementation of the core-Sersic model. We demonstrate the software by fitting the images of NGC 5557 and NGC 5813, which have been previously identified as core-Sersic galaxies by their 1D radial light prof…

Quantitative Method for the Optimal Subtraction of Continuum Emission from Narrow-band Images: Skewness Transition Analysis

Dickinson, Mark; Calzetti, Daniela; Hong, Sungryong

We present an objective method to remove the stellar continuum emission from narrow-band images to derive emission-line images. The method is based on the skewness of the pixel histogram of the residual images. Specifically, we exploit a transition in the skewness of the signal in the continuum-subtracted image, which appears when the image change…

Reconstruction of High Dynamic Range Images: Simulations of LBT Observations of a Stellar Jet, a Pathfinder Study for Future AO-Assisted Giant Telescopes

Arcidiacono, C.; Lorenzetti, D.; Nisini, B. +4 more