Results 11 to 20 of about 553 (184)

Observations of a Magellanic Corona. [PDF]

Nature, 2022
Krishnarao D, Fox AJ, D'Onghia E, Wakker BP, Cashman FH, Howk JC, Lucchini S, French DM, Lehner N.   +8 more
europepmc   +2 more sources

LRO‐LAMP Lunar South Pole Cold Traps: Assessment of H2O and Potential CO2 and NH3 Reserves

Journal of Geophysical Research: Planets, Volume 128, Issue 8, August 2023., 2023
Abstract Nighttime Lyman Alpha Mapping Project (LAMP) observations are used to investigate condensed volatiles at the south polar region of the Moon. This study incorporates LAMP data from the first ∼7 years of the mission and Diviner annual maximum temperatures to search for volatile signatures associated with H2O, NH3, and CO2. Other stable potential
L. O. Magaña, K. D. Retherford, B. D. Byron, A. R. Hendrix, C. Grava, K. E. Mandt, U. Raut, E. Czajka, P. O. Hayne, D. M. Hurley, G. R. Gladstone, M. J. Poston, T. K. Greathouse, W. Pryor, J. T. Cahill, A. Stickle   +15 more
wiley   +1 more source

Photometry and astrometry with JWST‐II: NIRCam distortion correction

Astronomische Nachrichten, Volume 344, Issue 3, March 2023., 2023
Abstract In preparation to make the most of our own planned James Webb Space Telescope investigations, we take advantage of publicly available calibration and early‐science observations to independently derive and test a geometric‐distortion solution for NIRCam detectors. Our solution is able to correct the distortion to better than ∼$$ \sim $$0.2 mas.
M. Griggio, D. Nardiello, L. R. Bedin
wiley   +1 more source

Not only climate: The importance of biotic interactions in shaping species distributions at macro scales

Ecology and Evolution, Volume 13, Issue 3, March 2023., 2023
Traditionally abiotic factors are considered the main drivers of biodiversity at macro‐scales, whereas biotic factors are considered important almost only at local scales. Modeling the distribution of 177 African bat species, we demonstrated the importance of considering biotic interactions in SDMs at macro‐scales regardless of the species’ ecology ...
Francesca Cosentino, Ernest Charles James Seamark, Victor Van Cakenberghe, Luigi Maiorano   +3 more
wiley   +1 more source

A new multi‐messenger description of starburst galaxies emission: perspectives for neutrino and gamma‐ray observations

Astronomische Nachrichten, Volume 344, Issue 1-2, January-February 2023., 2023
Abstract Star‐forming and starburst galaxies (SBGs), which are well‐known cosmic‐ray (CR) reservoirs, are expected to emit gamma rays and neutrinos predominantly via hadronic collisions. In this work we analyze the 10‐year Fermi‐Low Energy Technique (LAT) spectral energy distributions of 13 nearby galaxies by means of a physical model that accounts for
Antonio Marinelli, Antonio Ambrosone, Marco Chianese, Damiano Fiorillo, Gennaro Miele, Ofelia Pisanti   +5 more
wiley   +1 more source

Large Magellanic Cloud stellar clusters [PDF]

Astronomy & Astrophysics, 2001
We present WFPC2 photometry of 21 stellar clusters of the Large Magellanic Cloud obtained on images retrieved from the Hubble Space Telescope archive. The derived colour magnitude diagrams (CMDs) are presented and discussed. This database provides a sample of CMDs representing, with reliable statistics, simple stellar populations with a large spread ...
E. Brocato, E. Di Carlo, G. Menna
openaire   +1 more source

Radio continuum sources behind the Large Magellanic Cloud [PDF]

Monthly Notices of the Royal Astronomical Society, 2021
ABSTRACT We present a comprehensive multifrequency catalogue of radio sources behind the Large Magellanic Cloud (LMC) between 0.2 and 20 GHz, gathered from a combination of new and legacy radio continuum surveys. This catalogue covers an area of ∼144 deg2 at angular resolutions from 45 arcsec to ∼3 arcmin.
Filipović, M. D., Bojičić, I. S., Grieve, K. R., Norris, R. P., Tothill, N. F. H., Shobhana, D., Rudnick, L., Prandoni, I., Andernach, H., Hurley-Walker, N., Alsaberi, R. Z. E., Anderson, C. S., Collier, J. D., Crawford, E. J., For, B-Q, Galvin, T. J., Haberl, F., Hopkins, A. M., Ingallinera, A., Kavanagh, P. J., Koribalski, B. S., Kothes, R., Leahy, D., Leverenz, H., Maggi, P., Maitra, C., Marvil, J., Pannuti, T. G., Park, L. A. F., Payne, J. L., Pennock, C. M., Riggi, S., Rowell, G., Sano, H., Sasaki, M., Staveley-Smith, L., Trigilio, C., Umana, G., Urošević, D., Van Loon, J. Th, Vardoulaki, E.   +40 more
openaire   +4 more sources

New Insights on 30 Dor B Revealed by High-quality Multiwavelength Observations

The Astronomical Journal, 2023
The supernova remnant (SNR) 30 Dor B is associated with the H ii region ionized by the OB association LH99. The complex interstellar environment has made it difficult to study the physical structure of this SNR.
Wei-An Chen, Chuan-Jui Li, You-Hua Chu, Shutaro Ueda, Kuo-Song Wang, Sheng-Yuan Liu, Bo-An Chen   +6 more
doaj   +1 more source

Understanding climate change impacts on biome and plant distributions in the Andes: Challenges and opportunities

Journal of Biogeography, Volume 49, Issue 8, Page 1420-1442, August 2022., 2022
Abstract Aim Climate change is expected to impact mountain biodiversity by shifting species ranges and the biomes they shape. The extent and regional variation in these impacts are still poorly understood, particularly in the highly biodiverse Andes. Regional syntheses of climate change impacts on vegetation are pivotal to identify and guide research ...
Carolina Tovar, Andrea F. Carril, Alvaro G. Gutiérrez, Antje Ahrends, Lluis Fita, Pablo Zaninelli, Pedro Flombaum, Ana M. Abarzúa, Diego Alarcón, Valeria Aschero, Selene Báez, Agustina Barros, Julieta Carilla, M. Eugenia Ferrero, Suzette G. A. Flantua, Paúl Gonzáles, Claudio G. Menéndez, Oscar A. Pérez‐Escobar, Aníbal Pauchard, Romina C. Ruscica, Tiina Särkinen, Anna A. Sörensson, Ana Srur, Ricardo Villalba, Peter M. Hollingsworth   +24 more
wiley   +1 more source

Guanaco colonisation of Tierra del Fuego Island from mainland Patagonia: Walked, swam, or by canoe?

Geo: Geography and Environment, Volume 9, Issue 2, July‐December 2022., 2022
A geographical and biological puzzle that has perplexed scientists since the late 1800s working in southern South America: why are there so few vertebrates on the island of Tierra del Fuego compared to the adjacent Patagonia mainland, including the absence of the ubiquitous Guanaco (Lama guanicoe), wild camelid of the south? An interdisciplinary search
William L. Franklin
wiley   +1 more source