Results 161 to 170 of about 482,777 (285)

Shape models and physical properties of asteroids

, 2017
Despite the large amount of high quality data generated in recent space encounters with asteroids, the majority of our knowledge about these objects comes from ground based observations.
A. Cellino, A.R. Dobrovolskis, D. Vokrouhlický, D. Vokrouhlický, D.P. Rubincam, E.J. Öpik, G.W. Wetherill, J. Wisdom, J.L. Elliot, M. Kaasalainen, M. Kaasalainen, M. Viikinkoski, P. Pravec, P. Tanga, R. Connelly, T. Michałowski, T. Santana-Ros, W.F. Bottke   +17 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

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

High Spatial Resolution Thermal-Infrared Spectroscopy with ALES: Resolved Spectra of the Benchmark Brown Dwarf Binary HD 130948BC

, 2019
We present 2.9-4.1 micron integral field spectroscopy of the L4+L4 brown dwarf binary HD 130948BC, obtained with the Arizona Lenslets for Exoplanet Spectroscopy (ALES) mode of the Large Binocular Telescope Interferometer (LBTI). The HD 130948 system is a
Barman, Travis S., Briesemeister, Zackery W., Hinz, Philip, Leisenring, Jarron, Skemer, Andrew J., Skrutskie, Michael F., Spalding, Eckhart, Stone, Jordan M., Woodward, Charles E.   +8 more
core   +1 more source

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

, 2014
Robert D. Polak
openalex   +1 more source

Identification and Removal of Noise Modes in Kepler Photometry

, 2012
We present the Transiting Exoearth Robust Reduction Algorithm (TERRA) --- a novel framework for identifying and removing instrumental noise in Kepler photometry.
Erik A. Petigura, Geoffrey W. Marcy, Tenenbaum P., Van Cleve J. E.   +3 more
core   +1 more source

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  

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  

VLT diffraction-limited imaging at 11 and 18 micron of the nearest active galactic nuclei

, 2009
Mid-infrared imaging at resolutions of 300 mas of the central kpc region of 13 nearby, well-known active galaxies is presented. The bulk of the mid-IR emission is concentrated on an unresolved central source within a size of less than 5 to 130 pc ...
Baribaud, Barvainis, Bendo, Contini, Contini, Dale, Ferrarese, Ferruit, Freeman, Galliano, Glass, Haas, Harris, Häring-Neumayer, J. Reunanen, Jaffe, Kishimoto, Lagage, Levenson, M. A. Prieto, Madore, Maiolino, Maiolino, Mason, Meisenheimer, Moshir, Mueller Sánchez, Mulchaey, Orienti, Packham, Perlman, Prieto, Prieto, Prieto, Prieto, Prieto, Prieto, R. Siebenmorgen, Ramos Almeida, Reunanen, Rodríguez-Ardila, Schmitt, Schmitt, Siebenmorgen, Siebenmorgen, Storchi-Bergmann, Tokovinin, Tristram, Tristram, Veilleux, Weigelt, Whysong, Wilson, Wold   +53 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