Zobrazeno 1 - 10
of 10 992
pro vyhledávání: '"P Beasley"'
Autor:
DeForest, Craig E., Erickson, Nicholas F., Beasley, Matthew N., Osterman, Steven N., Smith, Travis J., Hanson, Mary H.
We present a first-principles analytic treatment of modern multi-vane occulters in circular (coronagraph) and linear (heliospheric imager) geometry, develop a simplified theory that is useful for designing and predicting their performance, explain ce
Externí odkaz:
http://arxiv.org/abs/2412.21047
Autor:
Eftekhari, E., Vazdekis, A., Riffel, R., Dahmer-Hahn, L. G., Chies-Santos, A. L., Beasley, M. A., Villaume, A., Zanatta, E.
Many recent studies have pointed out significant discrepancies between observations and models of stellar populations in the near-infrared (NIR). With current and future observing facilities being focused in this wavelength range, properly assessing
Externí odkaz:
http://arxiv.org/abs/2412.13587
Autor:
Dahmer-Hahn, L. G., Chies-Santos, A. L., Eftekhari, E., Zanatta, E., Riffel, R., Vazdekis, A., Villaume, A., Beasley, M. A., Lassen, A. E.
Publikováno v:
Astronomy & Astrophysics, October 2024, Volume 690, id.A93, 9 pp
One way to constrain the evolutionary histories of galaxies is to analyse their stellar populations. In the local Universe, our understanding of the stellar population properties of galaxies has traditionally relied on the study of optical absorption
Externí odkaz:
http://arxiv.org/abs/2412.13585
Autor:
Canossa-Gosteinski, Marco A., Chies-Santos, Ana L., Furlanetto, Cristina, Bonatto, Charles J., Flores-Freitas, Rodrigo, Schoenell, William, Beasley, Michael A., Overzier, Roderik, Santiago, Basilio X., Pieres, Adriano, Zanatta, Emílio J. B., Alamo-Martinez, Karla A., Balbinot, Eduardo, Queiroz, Anna B. A., Alves-Brito, Alan
Understanding faint dwarf galaxies is fundamental to the development of a robust theory of galaxy formation on small scales. Since the discovery of a population of ultra diffuse galaxies (UDGs) rich in globular clusters (GCs) in Coma, an increasing n
Externí odkaz:
http://arxiv.org/abs/2409.10205
Autor:
Beasley, LeRoy b.
An undirected graph is said to be cordial if there is a friendly (0,1)-labeling of the vertices that induces a friendly (0,1)-labeling of the edges. An undirected graph $G$ is said to be $(2,3)$-orientable if there exists a friendly (0,1)-labeling of
Externí odkaz:
http://arxiv.org/abs/2408.13853
Autor:
Nhan, Bang D., De Pree, Christopher G., Iverson, Matt, Gregory, Brenne, Dueri, Daniel, Beasley, Anthony, Schepis, Brian
NRAO and SpaceX have been engaged in coordinated testing efforts since Fall 2021, including conducting experiments on different interference avoidance schemes for the Karl G. Jansky Very Large Array (VLA) in New Mexico, and the Green Bank Telescope (
Externí odkaz:
http://arxiv.org/abs/2407.21675
Autor:
DeForest, Craig E., Seaton, Daniel B., Caspi, Amir, Beasley, Matt, Davis, Sarah J., Erickson, Nicholas F., Kovac, Sarah A., Patel, Ritesh, Tosolini, Anna, West, Matthew J.
Publikováno v:
Solar Physics, Vol. 299, 78 (23pp); 2024 June 10
We present the design of a portable coronagraph, CATEcor, that incorporates a novel "shaded truss" style of external occultation and serves as a proof-of-concept for that family of coronagraphs. The shaded truss design style has the potential for bro
Externí odkaz:
http://arxiv.org/abs/2405.08739
In this paper we apply second-order stochastic dominance (SSD) to the problem of enhanced indexation with asset subset (sector) constraints. The problem we consider is how to construct a portfolio that is designed to outperform a given market index w
Externí odkaz:
http://arxiv.org/abs/2404.16777
The goal of this work is to scrutinise the surface brightness fluctuation (SBF) calculation methodology. We analysed the SBF derivation procedure, measured the accuracy of the fitted SBF under controlled conditions, retrieved the uncertainty associat
Externí odkaz:
http://arxiv.org/abs/2403.14758
Autor:
Gvozdenko, Anastasia, Larsen, Søren S., Beasley, Michael A., Cabrera-Ziri, Ivan, Eitner, Philipp, Battaglia, Giuseppina, Leaman, Ryan
The chemical composition of globular clusters (GCs) across the Local Group provides information on chemical abundance trends. The host galaxy, Sextans A, is a low-surface-brightness dwarf irregular galaxy located on the edge of the Local Group.We der
Externí odkaz:
http://arxiv.org/abs/2403.10597