Results 151 to 160 of about 476,629 (275)

Optical Photometry and the Continuum of Active Galactic Nuclei

The Astrophysical Journal, 2002
In this paper, the continuum emission of active galactic nuclei is studied using broadband B, V, R, and I photometry. The nuclear contribution is estimated from the observations using two different approaches. In the first one, the images are deconvolved by the seeing profile and the corrected images are used to derive the nuclear contribution.
Ronaldo Eustáquio de Souza, Ronaldo Eustáquio de Souza, Sueli M. Viegas, Ruth Gruenwald   +3 more
openaire   +2 more sources

Polarimetry and photometry of the peculiar main-belt object 7968 = 133P/Elst-Pizarro

, 2010
133P/Elst-Pizarro is an object that has been described as either an active asteroid or a cometary object in the main asteroid belt. Here we present a photometric and polarimetric study of this object in an attempt to infer additional information about ...
Bagnulo, Bagnulo, Bagnulo, Beisser, Boehnhardt, Boehnhardt, Boehnhardt, Donati, G. P. Tozzi, H. Boehnhardt, Hsieh, Hsieh, Hsieh, J.-B. Vincent, Jewitt, K. Muinonen, Kinoshita, Lamy, Lamy, Lamy, Levison, Li, Li, Licandro, Licandro, Lupishko, Muinonen, Nesvorný, Penttilä, S. Bagnulo, Snodgrass, Tozzi, Tozzi, Tozzi, Tubiana   +34 more
core   +1 more source

Optical photometry of V4334 Sgr (Sakurai's Object)

Astrophysics and Space Science, 2001
LaTeX, 10 pages, 5 ps-figures, to be published in ...
openaire   +3 more sources

Ex vivo liquid core fiber photometry with high-resolution 3D printing

Sensors and Actuators Reports
High resolution 3D printing emerges as an alternative to microfabrication due to its fine resolution along with one-step manufacturing. Thus, it is broadly used in many fields, such as biological and chemical applications.
Yu Chang, Can Wang, Ke Du
doaj  

A laboratory module on radiometry, photometry and colorimetry for an undergraduate optics course [PDF]

, 2014
Robert D. Polak
openalex   +1 more source

Detection of the Sgr A* activity at 3.8 and 4.8 microns with NACO

, 2004
L'-band (lambda=3.8 microns) and M'-band (lambda=4.8 microns) observations of the Galactic Center region, performed in 2003 at VLT (ESO) with the adaptive optics imager NACO, have lead to the detection of an infrared counterpart of the radio source Sgr A*
Balick, Blum, Bower, Clénet, Clénet, Cuadra, D. Gratadour, D. Rouan, DePoy, Diolaiti, E. Gendron, Eisenhauer, F. Lacombe, Forrest, Genzel, Genzel, Ghez, Ghez, Lenzen, Markoff, Moneti, Nayakshin, Ott, P. Léna, R. Genzel, R. Schödel, Reid, Rousset, Schödel, Simons, T. Ott, Tollestrup, Y. Clénet, Yuan, Yuan, Yuan   +35 more
core   +1 more source

WBVR Photometry of the CBS HZ Her/Her X-1 [PDF]

arXiv, 2009
We report four-color WBVR photoelectric photometry of the close binary system (CBS) HZ HER/HER X-1 made in 1986-1994. Our photometry usually covered at least two 35d precession periods during each of the 1986-1990, 1992, and 1994 observing seasons. The accuracy and duration of our 10-year long photoelectric observations of the star with an x-ray source
arxiv  

The PLATO End-to-End CCD Simulator -- Modelling space-based ultra-high precision CCD photometry for the assessment study of the PLATO Mission

, 2010
The PLATO satellite mission project is a next generation ESA Cosmic Vision satellite project dedicated to the detection of exo-planets and to asteroseismology of their host-stars using ultra-high precision photometry.
Aerts, C., Arentoft, T., Catala, C., De Ridder, J., Kjeldsen, H., Salmon, S., Zima, W.   +6 more
core   +1 more source

A Cepheid systematics-free test of $H_0$ to $\lesssim2.5\%$ accuracy using SH0ES photometry [PDF]

arXiv
The recent SH0ES determination of the Hubble constant, $H_0=73.04\pm1.04$ km/s/Mpc, deviates significantly by $\approx5\sigma$ from the \textit{Planck} value, stimulating discussions on cosmological model extensions. To minimize statistical uncertainty and mitigate sensitivity to systematic errors in any single anchor distance determination, SH0ES ...
arxiv  

Deep-brain optical recording of neural dynamics during behavior. [PDF]

Neuron, 2023
Zhou ZC, Gordon-Fennell A, Piantadosi SC, Ji N, Smith SL, Bruchas MR, Stuber GD.   +6 more
europepmc   +1 more source