Results 31 to 40 of about 1,818,684 (284)

Catalog of Integrated-light Star Cluster Light Curves in TESS

The Astronomical Journal, 2023
We present the first integrated-light, TESS-based light curves for star clusters in the Milky Way, Small Magellanic Cloud, and Large Magellanic Cloud. We explore the information encoded in these light curves, with particular emphasis on variability.
Tobin M. Wainer, Gail Zasowski, Joshua Pepper, Tom Wagg, Christina L. Hedges, Vijith Jacob Poovelil, Tara Fetherolf, James R. A. Davenport, P. Marios Christodoulou, Jack T. Dinsmore, Avi Patel, Kameron Goold, Benjamin J. Gibson   +12 more
doaj   +1 more source

Focusing light in a curved-space

Optics Express, 2010
We use transformation optics to demonstrate 2D silicon nanolenses, with wavelength-independent focal point. The lenses are designed and fabricated with dimensions ranging from 5.0 microm x 5.0 microm to 20 microm x 20 microm. According to numerical simulations the lenses are expected to focus light over a broad wavelength range, from 1.30 mum to 1.60 ...
Danilo H, Spadoti, Lucas H, Gabrielli, Carl B, Poitras, Michal, Lipson   +3 more
openaire   +2 more sources

Simple Method of Light Field Calculation for Shaping of 3D Light Curves

Photonics, 2023
We propose a method for generating three-dimensional light fields with given intensity and phase distributions using purely phase transmission functions.
Svetlana N. Khonina, Alexey P. Porfirev, Sergey G. Volotovskiy, Andrey V. Ustinov, Sergey V. Karpeev   +4 more
doaj   +1 more source

Spectral and Photometric Studies of NGC 7469 in the Optical Range

Universe
The galaxy NGC 7469 is a bright infrared source with an active galactic nucleus (AGN) and an intense star-forming region with a radius of approximately 500 parsecs, where the star formation rate is estimated to be 20–50 M⊙yr−1.
Saule Shomshekova, Inna Reva, Ludmila Kondratyeva, Nazim Huseynov, Vitaliy Kim, Laura Aktay   +5 more
doaj   +1 more source

CCD Photometry of Contact Binary WZ Cephei [PDF]

Journal of Astronomy and Space Sciences, 2008
We present the full BVR light curves and five times of minima of WZ Cep to provides a complete photometric solution and to confirm the long term variation of the light curves.
Woo-Baik Lee, Young-Woon Kang, Kyu-Dong Oh   +2 more
doaj   +1 more source

A unifying explanation of complex frequency spectra of gamma Dor, SPB and Be stars: combination frequencies and highly non-sinusoidal light curves [PDF]

, 2015
There are many Slowly Pulsating B (SPB) stars and γ Dor stars in the Kepler mission data set. The light curves of these pulsating stars have been classified phenomenologically into stars with symmetric light curves and with asymmetric light curves.
Bedding, T. R., Bowman, D. M., Kurtz, Donald Wayne, Murphy, S. J., Shibahashi, H.   +4 more
core   +3 more sources

Interpretation of Strong Short-Term Central Perturbations in the Light Curves of Moderate-Magnification Microlensing Events [PDF]

, 2009
To improve the planet detection efficiency, current planetary microlensing experiments are focused on high-magnification events searching for planetary signals near the peak of lensing light curves.
A. Allan, A. Cassan, A. Fukui, A. Gould, A. Korpela, A. Udalski, A. Williams, Albrow, and M. Zub, B. S. Gaudi, B.-G. Park, C. H. Ling, C. Han, C. S. Botzler, C. Snodgrass, C.-U. Lee, Chung, D. D. Prester, D. Kim, D. Kubas, D. L. DePoy, D. M. Bramich, D. P. Bennett, D. S. Sullivan, Dominik, Dong, Dong, E. Corrales, F. Abe, G. Pietrzyński, G. W. Christie, Ghosh, Gould, Gould, Gould, H. Calitz, Han, Han, Han, I. A. Bond, I. Soszyński, I. Steele, J. A. R. Caldwell, J. B. Hearnshaw, J. B. Marquette, J. Donatowicz, J. Greenhill, J. McCormick, J. Menzies, J. P. Beaulieu, J. Wambsganss, K. C. Sahu, K. Furusawa, K. Hill, K. Horne, K. Kamiya, K. Masuda, K. Ohnishi, K. R. Pollard, K. Ulaczyk, K.-H. Hwang, L. A. B. Monard, L. Skuljan, M. Bode, M. Burgdorf, M. D. Albrow, M. Dominik, M. Hoffman, M. K. Szymański, M. Kubiak, M. Nagaya, N. Kains, N. Miyake, N. Rattenbury, O. Szewczyk, P. C. M. Yock, P. Fouque, P. J. Tristram, P. M. Kilmartin, P. Meintjes, Park, Pejcha, R. Martin, R. Street, R. W. Pogge, S. Brillant, S. Dieters, S. Dong, T. Natusch, T. Sako, T. Sumi, T. Tokumura, To. Saito, U. G. Jørgensen, Udalski, V. Batista, W. Allen, W. L. Sweatman, W. Lin, Y. C. Perrott, Y. Itow, Y. Matsubara, Y. Muraki, Y. Tsapras, Yoo, Ł. Wyrzykowski   +105 more
core   +3 more sources

Energy Injection in GRB Afterglow Models

, 2006
We extend the standard fireball model, widely used to interpret gamma-ray burst (GRB) afterglow light curves, to include energy injections, and apply the model to the afterglow light curves of GRB 990510, GRB 000301C and GRB 010222. We show that discrete
Bhattacharya D., Covino S., Cowsik R., Einar H. Gudmundsson, Granot J., Gudlaugur Johannesson, Gunnlaugur Bjornsson, Holland S., Masetti N., Panaitescu A., Sagar R., Sagar R., Wu X.-F.   +12 more
core   +1 more source

Financial Burden Associated With Hospitalisation Among Families of Childhood Brain Tumours in Australia

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Families of children with cancer experience significant financial strain, even with universal healthcare. Indirect costs, such as productivity losses and non‐medical expenses, are rarely included in economic evaluations, and little is known about how effectively financial aid programmes alleviate this burden. Childhood brain tumours
Megumi Lim, Natalie Bradford, David Brain, Sameera Senanayake, Sanjeewa Kularatna, Kate Young, Christine Cashion, Tim Hassall, Susanna Cramb   +8 more
wiley   +1 more source

Spin Period Evolution of Decommissioned GLONASS Satellites

Aerospace
Light curve analysis of defunct satellites is critical for characterizing their rotational motion. An accurate understanding of this aspect will benefit active debris removal and on-orbit servicing missions as part of the solution to the space debris ...
Abdul Rachman, Alessandro Vananti, Thomas Schildknecht   +2 more
doaj   +1 more source