Results 71 to 80 of about 1,427 (189)

Keck Observations in the INfrared of Taurus and ρ Oph Exoplanets And Ultracool Dwarfs (KOINTREAU) I: A Planetary-mass Companion and a Disk-obscured Stellar Companion Discovered in Taurus

The Astronomical Journal
We present the first discoveries from Keck Observations in the Infrared of Taurus and ρ Oph Exoplanets and Ultracool dwarfs (KOINTREAU), an adaptive optics imaging survey of young stars in the Taurus and ρ Oph star-forming regions using the Keck infrared
Samuel A. U. Walker, Michael C. Liu, Dimitri Mawet, Charlotte Bond, Mark Chun, Raquel A. Martinez, Mark W. Phillips, Jonathan P. Williams, Zhoujian Zhang, Bin B. Ren, Karl Stapelfeldt, Taichi Uyama, Nicole Wallack   +12 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

ι Cassiopeiae: Orbit, Masses, and Photometry from Adaptive Optics Imaging in theIandHBands [PDF]

, 2003
J. Drummond, Scott Milster, Patrick T. Ryan, Lewis C. Roberts   +3 more
openalex   +1 more source

Estimation of Differential Photometry in Adaptive Optics Observations with a Wavelet-based Maximum Likelihood Estimator [PDF]

, 2011
Roberto Baena-Gallé, Szymon Gładysz
openalex   +1 more source

Benjamín Thomson, Count Rumford

Revista CENIC Ciencias Químicas, 2016
Benjamin Thomson, Count Rumford (1752-1814), was a self-educated scientist, military man, and political economist, living during the turbulent period of the American Revolution and the European Wars of the 18th and 19th centuries. He carried on important
Jaime Wisniak
doaj  

Photometry and Spectroscopy of the GRB 970508 Optical Counterpart

Science, 1998
An optical transient within the error box of the gamma ray burst GRB 970508 was imaged 4 hours after the event. It displayed a strong ultraviolet excess, and reached maximum brightness 2 days later. The optical spectra did not show any emission lines, and no variations on time scales of minutes were observed for 1 hour during the decline phase ...
A J, Castro-Tirado, J, Gorosabel, N, Benitez, C, Wolf, R, Fockenbrock, E, Martinez-Gonzalez, H, Kristen, A, Broeils, H, Pedersen, J, Greiner, E, Costa, M, Feroci, L, Piro, F, Frontera, L, Nicastro, E, Palazzi, C, Bartolini, A, Guarnieri, N, Masetti, A, Piccioni, M, Mignoli, M, Wold, M, Lacy, K, Birkle, T, Broadhurst, S, Brandt, N, Lund   +26 more
openaire   +3 more sources

Variability of Young Massive Stars in the Arches Cluster: Accurate Photometry with Adaptive Optics [PDF]

, 2011
K. Markakis, A. Z. Bonanos, G. Pietrzyński, Lucas M. Macri, K. Z. Stanek   +4 more
openalex   +1 more source

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

ADAPTIVE OPTICS PHOTOMETRY AND ASTROMETRY OF BINARY STARS. III. A FAINT COMPANION SEARCH OF O-STAR SYSTEMS [PDF]

, 2008
N. H. Turner, Theo A. ten Brummelaar, Lewis C. Roberts, Brian D. Mason, William I. Hartkopf, Douglas R. Gies   +5 more
openalex   +1 more source

Optimal Stellar Photometry for Multi-conjugate Adaptive Optics Systems Using Science-based Metrics [PDF]

, 2017
P. Turri, A. W. McConnachie, P. B. Stetson, G. Fiorentino, D. R. Andersen, G. Bono, D. Massari, J.-P. Véran   +7 more
openalex   +1 more source