Results 31 to 40 of about 220,607 (288)
IVOA Recommendation: IVOA Photometry Data Model
, 2013 The Photometry Data Model (PhotDM) standard describes photometry filters, photometric systems, magnitude systems, zero points and its interrelation with the other IVOA data models through a simple data model.
Allen, Mark +10 more
core +2 more sources
Variations of the Ratio of Total-To-selective Extinction in the Galaxy
Open Astronomy, 2003 The results of the study of variations of total-to-selective extinction RV near the Galactic plane (-12° ≤ b ≤+12°) are presented. It is shown that variations of RV range from 1.9 to 3.4 and it is not possible to determine its typical value for the ...
Sūdžius J., Raudeliūnas S.
doaj +1 more source
Parameterization of long-period eclipsing binaries
Open Astronomy, 2022 One of the important sources for independent determination of stellar masses is eclipsing binaries with components on the main sequence, and with observable spectral lines of both components.
Pakhomova Polina +4 more
doaj +1 more source
Combining Aperture and PSF-Fitting Photometry
Open Astronomy, 2003 The multiple object and multiple frame (MOMF) CCD photometry package, that combines the advantages of aperture and PSF photometry is described. Results from comparisons with other programs are given; no other photometry package was found to give better ...
Handler G.
doaj +1 more source
On the Accuracy of Gaia Photometry
Open Astronomy, 2003 The errors of Gaia photometry originating from tolerancies of the light filter mean wavelengths and half-widths are investigated.
Abromavičius G. +3 more
doaj +1 more source
Optimal multihump filter for photometric redshifts [PDF]
, 2001 We propose a novel type filter for multicolor imaging to improve on the photometric redshift estimation of galaxies. An extra filter - specific to a certain photometric system - may be utilized with high efficiency.
Budavari, Tamas +4 more
core +3 more sources
Photometric Stereo in the Wild [PDF]
2015 IEEE Winter Conference on Applications of Computer Vision, 2015 Conventional photometric stereo requires to capture images or videos in a dark room to obstruct complex environment light as much as possible. This paper presents a new method that capitalizes on environment light to avail geometry reconstruction, thus bringing photometric stereo to the wild, such as an outdoor scene, with uncontrolled lighting.
Chun Ho Hung +5 more
openaire +1 more source
Recent UBVR Photometry of Symbiotic Stars
Open Astronomy, 2003 We present recent photometric observations of Z And, BF Cyg, and AX Per made in the standard Johnson UBVR system. The main characteristics of their light behavior can be summarized as follows: Z And: our observations cover the recent active phase, from ...
Skopal A. +3 more
doaj +1 more source
A Comprehensive Comparison of Period Extraction Algorithms for Asteroids with Long Term Observation
Universe, 2021 The light curve period of an asteroid plays an important role in determining the rotation period, the collision evolution and the YORP effect. There are many period extraction algorithms used to find the light curve period of asteroids with long term ...
Yang Liu +6 more
doaj +1 more source
PHOTOMETRIC DETERMINATION OF IRON. [PDF]
Journal of the American Chemical Society, 1902 n ...
Hinds, J. I. D., Cullum, Myrtis Louise
openaire +2 more sources