Results 71 to 80 of about 84,707 (221)

Ultraviolet number counts of galaxies from Swift UV/Optical Telescope deep imaging of the Chandra Deep Field South

, 2009
Deep Swift UV/Optical Telescope (UVOT) imaging of the Chandra Deep Field South is used to measure galaxy number counts in three near ultraviolet (NUV) filters (uvw2: 1928 A, uvm2: 2246 A, uvw1: 2600 A) and the u band (3645 A). UVOT observations cover the
A. A. Breeveld, Arnouts, Baldry, Beckwith, C. Gronwall, Capak, D. A. Hinshaw, D. E. Vanden Berk, Deharveng, E. A. Hoversten, Eddington, Eliche-Moral, F. E. Marshall, Fioc, Gardner, Gehrels, Giacconi, Giavalisco, Lehmer, M. H. Siegel, M. Still, P. A. Curran, P. W. A. Roming, Poole, Sasseen, Schlegel, Smail, T. S. Koch, Teplitz, Trenti, Volonteri, Wyder, Xu, Yasuda   +33 more
core   +1 more source

AT2025ulz and S250818k: Zooming in with the Hubble Space Telescope

The Astrophysical Journal Letters
AT2025ulz is an optical/near-infrared transient discovered during follow-up of the candidate gravitational wave (GW) event S250818k. Its young age (≲1 day), rapid decline, and strong color evolution over the first 48 hr classify it as a potential ...
Yu-Han Yang, Eleonora Troja, Marko Ristić, Muskan Yadav, Massine El Kabir, Rubén Sánchez-Ramírez, Rosa L. Becerra, Chris L. Fryer, Brendan O’Connor, Simone Dichiara, Alberto J. Castro-Tirado, Camila Angulo-Valdez, Josefa Becerra González, José A. Font, Ori Fox, Lei Hu, Youdong Hu, William H. Lee, Margarita Pereyra, Alicia M. Sintes, Alan M. Watson, K. Océlotl C. López Mendoza   +21 more
doaj   +1 more source

The Cycles and Dynamical Properties of Convective Outbreaks in Jupiter's Highest Speed Jet From a 55‐Year Study

Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract Jupiter's most intense jet at planetographic latitude 23.7°N experiences vigorous planetary‐scale disturbances. The onset consists of the outbreak of 1–3 bright clouds of convective origin developing turbulent plumes. Observed events between 1970 and 2025 shows a cycle of activity with a period in the range of 3.8–5.1 yrs interrupted between ...
Agustín Sánchez‐Lavega, José Félix Rojas, Jon Legarreta, Alberto Mendi‐Martos, Ricardo Hueso, Peio Iñurrigarro, Amy A. Simon, Michael H. Wong, Liming Li   +8 more
wiley   +1 more source

Proper Motions of Dwarf Spheroidal Galaxies from Hubble Space Telescope Imaging. IV: Measurement for Sculptor [PDF]

, 2006
This article presents a measurement of the proper motion of the Sculptor dwarf spheroidal galaxy determined from images taken with the Hubble Space Telescope using the Space Telescope Imaging Spectrograph in the imaging mode.Comment: 38 pages, 15 figures,
Bristow, P., Harris, H. C., Mateo, M., Minniti, D., Olszewski, E. W., Piatek, S., Pryor, C., Tinney, C. G.   +7 more
core   +3 more sources

V659 Cen: System Members Updated

The Astronomical Journal
V659 Cen is a classical Cepheid which is part of a multiple system. Previous observations have shown that a hot companion dominates an ultraviolet spectrum and a cooler main-sequence star dominates an XMM-Newton spectrum. The Hubble Space Telescope Space
Nancy Remage Evans, Charles Proffitt, Pierre Kervella, Joanna Kuraszkiewicz, H. Moritz Günther, Richard I. Anderson, Alexandre Gallenne, Antoine Mérand, Boris Trahin, Giordano Viviani, Shreeya Shetye   +10 more
doaj   +1 more source

Axion Black Hole Solution in Non‐Metricity Gravity

Fortschritte der Physik, Volume 74, Issue 2, February 2026.
Abstract A static, spherically symmetric black hole solution in symmetric teleparallel (non‐metricity) gravity sourced by an axion field is constructed. Starting from the modified field equations, exact configurations are obtained characterized by the mass M$M$ and an axion–geometry coupling β$\beta$, with temporal metric function A(r)=1−2Mr+βr$A(r)=1-\
A. Eid, G.G.L. Nashed
wiley   +1 more source

Late-time acceleration with steep exponential potentials

European Physical Journal C: Particles and Fields, 2017
In this letter, we study the cosmological dynamics of steeper potential than exponential. Our analysis shows that a simple extension of an exponential potential allows to capture late-time cosmic acceleration and retain the tracker behavior.
M. Shahalam, Weiqiang Yang, R. Myrzakulov, Anzhong Wang   +3 more
doaj   +1 more source

Hubble Space Telescope arrives

Eos, Transactions American Geophysical Union, 1989
After a secret transcontinental flight, NASA's Hubble Space Telescope has arrived at the Kennedy Space Center at Cape Canaveral, Fla., where it will be tested in preparation for a March 26, 1990, launch aboard the space shuttle Discovery.The telescope was gingerly transferred from a Lockheed plant in California, where it was assembled, to Florida on an
openaire   +1 more source

Differentiating Plumes and Local Torus Segments of Enceladus

Journal of Geophysical Research: Space Physics, Volume 131, Issue 2, February 2026.
Abstract Enceladus's south polar plumes and their surrounding torus segments (local plasma regions formed by plume material diffusion) are key to understanding its magnetospheric interaction; however, clear observational criteria to distinguish them remain lacking.
Shangchun Teng, Zhonghua Yao, Jian Zhang, Tianshu Qin, Fiona Wai Chung Law, Jinyan Zhao, Ruilong Guo   +6 more
wiley   +1 more source

Hubble Space Telescope observations of Mars [PDF]

Hubble Space Telescope (HST) afforded the possibility of resolving features as small as 100 km on the Martian surface even when it is at the far point of its orbit. Therefore it is ideally suited for monitoring seasonal changes on the red planet.
Clancy, Todd, James, Philip B., Kahn, Ralph, Lee, Steve, Martin, Leonard, Singer, Robert, Zurek, Richard   +6 more
core   +1 more source