Results 111 to 120 of about 208,454 (264)

The sky distribution of 511 keV positron annihilation line emission as measured with INTEGRAL/SPI [PDF]

, 2007
The imaging spectrometer SPI on board ESA's INTEGRAL observatory provides us with an unprecedented view of positron annihilation in our Galaxy. The first sky maps in the 511 keV annihilation line and in the positronium continuum from SPI showed a ...
A. Strong, B. Cordier, B. J. Teegarden, Ch. Winkler, G. K. Skinner, G. Vedrenne, G. Weidenspointner, J. -p. Roques, J. Knödlseder, P. Jean, P. Milne, P. Von Ballmoos, R. Diehl, S. Schanne   +13 more
core   +2 more sources

The Galactic Bulge: A Review

, 2007
The Milky Way is the only galaxy for which we can resolve individual stars at all evolutionary phases, from the Galactic center to the outskirt. The last decade, thanks to the advent of near IR detectors and 8 meter class telescopes, has seen a great ...
Alard, Alves-Brito, Barbuy, Barbuy, Barbuy, Bica, Dante Minniti, Dwek, Hamadache, Harding, Immeli, Lecureur, Manuela Zoccali, Zoccali, Zoccali, Zoccali   +15 more
core   +1 more source

DISCOVERY OF RR LYRAE STARS IN THE NUCLEAR BULGE OF THE MILKY WAY [PDF]

, 2016
Indexación: Web of ScienceGalactic nuclei, such as that of the Milky Way, are extreme regions with high stellar densities, and in most cases, the hosts of a supermassive black hole.
Gonzalez, OA, Gran, F, Minniti, D, Ramos, RC, Rejkuba, M, Valenti, E, Zoccali, M   +6 more
core   +2 more sources

Orientation of Microfeatures on Europa

Journal of Geophysical Research: Planets, Volume 130, Issue 11, November 2025.
Abstract Microfeatures, including pits, spots, domes, hybrids, and microchaos, are abundant features on the surface of Europa. A better characterization of the microfeature morphology can help us understand their formation and Europa's surface evolution.
K. A. Nunez, L. G. J. Montesi
wiley   +1 more source

Light-curve Recovery with Rubin-LSST. II. Unveiling the Darkness of the Galactic Bulge (VESTALE) with RR Lyrae

The Astrophysical Journal Supplement Series
This work is part of VESTALE, a project initiated within the Legacy Survey of Space and Time (LSST) Cadence Strategy Optimization Process. Its goal is to explore the potential of Rubin-LSST observations aimed at the Galactic bulge (henceforth just “Bulge”
M. Di Criscienzo, S. Leccia, V. Braga, I. Musella, G. Bono, M. Dall’Ora, G. Fiorentino, M. Marconi, R. Molinaro, V. Ripepi, L. Girardi, A. Mazzi, G. Pastorelli, M. Trabucchi, N. Matsunaga, M. Monelli, A. Saha, K. A. Vivas, R. Zanmar Sanchez   +18 more
doaj   +1 more source

Chemical evolution of the Galactic bulge as traced by microlensed dwarf and subgiant stars. II. Ages, metallicities, detailed elemental abundances, and connections to the Galactic thick disc [PDF]

, 2010
The Bulge is the least understood major stellar population of the Milky Way. Most of what we know about the formation and evolution of the Bulge comes from bright giant stars.
A. Gal-Yam, A. Gould, A. Udalski, Bensby, Bensby, Bensby, Bensby, Bensby, Bensby, Bond, C. Han, Carollo, Carretta, Cescutti, Clarkson, Cohen, Cohen, Cohen, Colavitti, Cunha, D. Adén, D. Suzuki, Demarque, Edvardsson, Epstein, Feltzing, Feltzing, Feltzing, Feltzing, Frogel, Fulbright, Fulbright, Gustafsson, H. Sana, Holtzman, Howard, Howard, I. Bond, Immeli, J. A. Johnson, J. Meléndez, Johnson, Johnson, Kalirai, Kane, Kilic, Kormendy, Lecureur, Luck, M. Asplund, Maeder, McWilliam, McWilliam, Meléndez, Meynet, Minniti, N. Miyake, Nair, Nordström, Oort, Prochaska, Rahimi, Ramírez, Rattenbury, Rich, Rich, Ryde, S. Feltzing, S. Lucatello, Sahu, Santos, Schönrich, Shi, Sofue, T. Bensby, T. Sumi, Takeda, Taylor, Twarog, Udalski, Venn, Weiland, Woosley, Yoo, Zoccali, Zoccali, Zoccali   +86 more
core   +2 more sources

Extreme Magnetopause Deformation Induced by High‐Speed Jet From Foreshock Transient

Geophysical Research Letters, Volume 52, Issue 20, 28 October 2025.
Abstract This study presents comprehensive observations of intense high‐speed jets (HSJs) and their global impacts on the inner magnetosphere and ionosphere, using multi‐satellite and ground‐based observations. Cluster‐4, located near the bow shock, observed signatures associated with foreshock transients generated by a solar wind directional ...
Hyangpyo Kim, Rumi Nakamura, Niklas Grimmich, Adriana Settino, Kyoung‐Joo Hwang, Jaeheung Park, Zoltán Vörös, Cyril Simon Wedlund, Kathryn A. McWilliams   +8 more
wiley   +1 more source

Learning the Universe: GalactISM Simulations of Resolved Star Formation and Galactic Outflows across Main-sequence and Quenched Galactic Environments

The Astrophysical Journal
We present a suite of six high-resolution chemodynamical simulations of isolated galaxies, spanning observed disk-dominated environments on the star-forming main sequence, as well as quenched, bulge-dominated environments.
Sarah M. R. Jeffreson, Eve C. Ostriker, Chang-Goo Kim, Jindra Gensior, Greg L. Bryan, Timothy A. Davis, Lars Hernquist, Sultan Hassan   +7 more
doaj   +1 more source

Inner galactic disc metallicity distributions and the bulge-disc relation

EPJ Web of Conferences, 2012
The intermediate-to-old population of the inner galactic disk remains a relatively uncharted territory. We present the results of a high resolution spectroscopic survey of over 200 red clump stars in the inner galactic disc (3–5 kpc from the galactic ...
Haywood M., Gómez A., Babusiaux C., Hill V., Katz D., Royer F.   +5 more
doaj   +1 more source

Probing the Galactic Bulge with deep Adaptive Optics imaging: the age of NGC 6440

, 2008
We present first results of a pilot project aimed at exploiting the potentiality of ground based adaptive optics imaging in the near infrared to determine the age of stellar clusters in the Galactic Bulge.
Bellazzini, Buonanno, Buonanno, Carretta, Chaboyer, Cohn, Davidge, De Angeli, E. Diolaiti, E. Valenti, F. R. Ferraro, Ferraro, G. Beccari, Guarnieri, Heasley, Iben, L. Origlia, Matteucci, Origlia, Origlia, Ortolani, Pietrinferni, Rosenberg, S. Fabbri, S. Lena, Valenti, Wyse, Zoccali   +27 more
core   +1 more source