Aperture Photometry Tool
نویسندگان
چکیده
منابع مشابه
Imaging Photometry of Seyfert 1 AGNs and Quasars I: Multi-Aperture Photometry
Near-infrared JHK ′ imaging photometry was obtained of 331 AGNs consisting mainly of Seyfert 1 AGNs and quasars (QSOs). This sample was selected to cover a range of radio emission strength, redshift from z = 0 to 1, and absolute B-magnitude from MB = −29 mag to −18 mag. Among low-z AGNs with z < 0.3, Seyfert 1− 1.5 AGNs are distributed over a region from a location typical of “galaxies” to a lo...
متن کاملRedshift-Distance Survey of Early-Type Galaxies: Circular Aperture Photometry
We present R-band CCD photometry for 1332 early-type galaxies, observed as part of the ENEAR survey of peculiar motions using early-type galaxies in the nearby Universe. Circular apertures are used to trace the surface brightness profiles, which are then fit by a two-component bulge-disk model. From the fits we obtain the structural parameters required to estimate galaxy distances using the Dn ...
متن کاملThe TAOS Project: High-Speed Crowded Field Aperture Photometry
We have devised an aperture photometry pipeline for data reduction of image data from the Taiwanese-American Occultation Survey (TAOS). The photometry pipeline has high computational performance, and is capable of real-time photometric reduction of images containing up to 1000 stars, within the sampling rate of 5 Hz. The pipeline is optimized for both speed and signal-to-noise performance, and ...
متن کاملAperture Photometry of Saturated Star Images from Digitised Photographic Plates
Saturated stellar images on digitised photographic plates are many times greater in area than the ‘seeing disk’ seen in unsaturated CCD images. Indeed the flux profile of a bright star can be traced out for several degrees from the star’s centre. The radius of the saturated stellar image can often be directly related to the magnitude of the star, a fact well known and exploited in iris photomet...
متن کاملVAPHOT - A Package for Precision Differential Aperture Photometry
The aperture photometry package ‘vaphot’ was developed to perform reliable and precise time-series photometry of uncrowded fields. This package works within the IRAF environment and is built upon the standard aperture photometry task ‘phot’ from IRAF. The design goal of ‘vaphot’ was a simple-to-use photometry task with relatively few input parameters that performs precise aperture photometry, u...
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ژورنال
عنوان ژورنال: Publications of the Astronomical Society of the Pacific
سال: 2012
ISSN: 0004-6280,1538-3873
DOI: 10.1086/666883