Results 31 to 40 of about 167,903 (283)

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

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

Reflex motion in the Milky Way stellar halo resulting from the Large Magellanic Cloud infall [PDF]

Monthly Notices of the Royal Astronomical Society: Letters, 2020
We present the results of N-body models of the Milky Way and Large Magellanic Cloud system and study the kinematic reflex motion in the stellar halo owing to the barycentre displacement of the disc.
M. Petersen, J. Peñarrubia
semanticscholar   +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

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

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

The Large Magellanic Cloud Supernova Remnant MCSNR J0550-6823

The Astrophysical Journal, 2023
We describe radio, optical, and X-ray observations of this rather faint, old Large Magellanic Cloud (LMC) supernova remnant. The [O iii ] emission forms a distinct shell, the remnant of the outer shock, which encloses the radio and X-ray emission and ...
Frederick D. Seward, Sean D. Points
doaj   +1 more source

The Red Supergiant Binary Fraction of the Large Magellanic Cloud [PDF]

Astrophysical Journal, 2020
The binary fraction of unevolved massive stars is thought to be 70%–100% but there are few observational constraints on the binary fraction of the evolved version of a subset of these stars, the red supergiants (RSGs).
K. Neugent, E. Levesque, P. Massey, N. Morrell, M. Drout   +4 more
semanticscholar   +1 more source