Results 71 to 80 of about 2,141 (221)

Optical surface photometry of a sample of disk galaxies [PDF]

Astronomy & Astrophysics, 2001
This work presents the structural decomposition of a sample of 11 disk galaxies, which span a range of different morphological types. The U, B, V, R, and I photometric information given in Paper I (color and color-index images and luminosity, ellipticity, and position-angle profiles) has been used to decide what types of components form the galaxies ...
Prieto, M., Aguerri, J. A. L., Varela, A. M., Muñoz-Tuñón, C.   +3 more
openaire   +2 more sources

The THESEUS Space Mission and the Infrared Telescope Calibration Unit

Astronomische Nachrichten, EarlyView.
ABSTRACT The Transient High‐Energy Sky and Early Universe Surveyor (THESEUS) is an ESA M7 mission concept currently in Phase A, designed to exploit gamma‐ray bursts to probe the early Universe while advancing multi‐messenger and time‐domain astrophysics. To achieve its ambitious goals, THESEUS will combine wide‐band x‐ray and gamma‐ray monitors with an
András Péter Joó, Rebeka Gyöngyi Kiss, Lorenzo Amati, Bendegúz Koncz, Örs Detre, Gyula Zilizi, Zsolt Bagoly, István I. Rácz, Sándor Pintér, L. Viktor Tóth   +9 more
wiley   +1 more source

New Astronomical Observatory Design for the Detection and Tracking of Satellite Objects: The Satellite Robotic Observatory (SRO)

Remote Sensing
Robotic Astronomical Observatories (RAOs) have provided very good results in different research projects in astrophysics/astronomy. Their applications in the detection, tracking, and identification of near-Earth objects have contributed to the ...
Francisco Espartero, Javier Cubas, David Nespral, Santiago Pindado   +3 more
doaj   +1 more source

Estimating the spatial behavior of fiber photometry across different brain regions

, 2021
We describe a method to characterize the spatial behavior of fiber photometry signals across different mouse brain regions, highly differentiating in cortex, hippocampus and ...
Pisano F., Pisanello M., Pisanello F., Bianco M., Brunetti V., Balena A., Verri T., Montinaro C., de Vittorio M., Spagnolo B., de Nuccio F., Lofrumento D. D.   +11 more
core  

Optical Photometry of the GRB 010222 Afterglow

, 2001
The optical afterglow of GRB 010222 was observed using the recently installed 2-m telescope at the Indian Astronomical Observatory, Hanle, and the telescopes at the Vainu Bappu Observatory, Kavalur, beginning ~ 0.6 day after the detection of the event.
Cowsik, R., Prabhu, T. P., Anupama, G. C., Bhatt, B. C., Sahu, D. K., Ambika, S., Padmakar, Bhargavi, S. G.   +7 more
openaire   +2 more sources

Feasibility Study for Application of Digitized Henize Mt. Wilson Michigan Southern Sky Hα$$ \boldsymbol{\alpha} $$ Survey Low‐Dispersive Spectral Plates for Searches for Anomalous and Highly Redshifted Objects

Astronomische Nachrichten, EarlyView.
ABSTRACT The goal of this study is to confirm the feasibility of the use of digitized low dispersive MtWilson Michigan Southern Sky Hα$$ \alpha $$ survey astronomical photographic plates for modern astrophysical research. The detection of highly redshifted objects, such as early galaxies and quasars, is fundamental to understanding the universe's ...
Tauseef Ahmad Zafar, René Hudec, Marta Mara Merono Vidagany, Fehmi Mejri   +3 more
wiley   +1 more source

Keck Observations in the INfrared of Taurus and ρ Oph Exoplanets And Ultracool Dwarfs (KOINTREAU). II. Two Young Bound Companions to Ophiuchus Stars

The Astronomical Journal
We present the second set of discoveries from Keck Observations in the INfrared of Taurus and ρ Oph Exoplanets And Ultracool dwarfs (KOINTREAU), an adaptive optics survey of young stars in the Taurus and ρ Oph star-forming regions using Keck/NIRC2 in ...
Samuel A. U. Walker, Michael C. Liu, Dimitri Mawet, Mark W. Phillips, Aniket Sanghi, Bin B. Ren, Taichi Uyama   +6 more
doaj   +1 more source

Optical and Near‐Infrared Photometry of Distant Galaxy Clusters

The Astrophysical Journal Supplement Series, 2002
We present optical and near-infrared photometry of 45 clusters of galaxies at 0.1 < z < 1.3. Galaxy catalogs in each cluster were defined at the longest wavelenth available, generally the K-band, down to approximately two magnitudes below M*. We include finding chart images of the band used for catalog definition.
Stanford, S Adam, Eisenhardt, P, Dickinson, Mark, Holden, B, De Propris, Roberto   +4 more
openaire   +3 more sources

Reply to ‘Impact of optical aberrations on axial position determination by photometry’ [PDF]

Nature Methods, 2018
Franke and van de Linde reply to 'Impact of optical aberrations on axial position determination by photometry'.
Christian Franke, Sebastian van de Linde
openaire   +4 more sources

Hidden No More: Spotlight on Tidal Disruption Events in Active Galactic Nuclei

Astronomische Nachrichten, EarlyView.
ABSTRACT Tidal disruption events (TDEs) are typically discovered in previously quiescent galaxies. However, earlier studies have revealed a handful of TDEs occurring in pre‐existing active galactic nuclei (AGN). We discuss AT2019aalc, a promising TDE candidate in an AGN, and compare it to similar sources.
Patrik Milán Veres
wiley   +1 more source