Results 121 to 130 of about 948,048 (332)

Milky Way’s Metal-poor Stars Display Chemical Transition near the Solar Radius

The Astrophysical Journal Letters
The metal-poor stars of a galaxy offer insights into that galaxy’s early formation processes and accretion history. Here, we investigate whether the metal-poor stars of our Milky Way Galaxy exhibit any characteristic trends in Galactocentric distance ...
Khyati Malhan
doaj   +1 more source

First Stellar Abundances in the Dwarf Irregular Galaxy Sextans A [PDF]

, 2004
We present the abundance analyses of three isolated A-type supergiant stars in the dwarf irregular galaxy Sextans A (=DDO 75) from high-resolution spectra obtained with the Ultraviolet-Visual Echelle Spectrograph (UVES) on the Kueyen telescope (UT2) of ...
A. Kaufer, K. Venn, E. Tolstoy, C. Pinte, R. Kudritzki   +4 more
semanticscholar   +1 more source

APOGEE DR14/DR15 Abundances in the Inner Milky Way

, 2018
We present an overview of the distributions of 11 elemental abundances in the Milky Way's inner regions, as traced by APOGEE stars released as part of SDSS Data Release 14/15 (DR14/DR15), including O, Mg, Si, Ca, Cr, Mn, Co, Ni, Na, Al, and K.
Andrews, B. H., Beers, T. C., Chojnowski, S. D., Cunha, K., Frinchaboy, P. M., Hasselquist, S., Holtzman, J. A., Johnson, J. A., Jonsson, H., Majewski, S. R., Minniti, D., Nidever, D. L., Nitschelm, C., Rojas-Arriagada, A., Schultheis, M., Sobeck, J., Zasowski, G.   +16 more
core   +1 more source

Chromosome‐scale genome assembly of the South American fruit fly, Anastrepha fraterculus sp.1

Insect Science, EarlyView.
Anastrepha fraterculus sp. 1 is a major fruit fly pest in Argentina, currently controlled through chemical treatments and traps. This study aims to enhance the genomic understanding of this species to support the development of sterile insect technique as well as the use of innovative technologies.
Máximo Rivarola, Claudia A. Conte, Pierre Berube, Shu‐Huang Chen, M. Cecilia Giardini, Alejandra C. Scannapieco, Fabián H. Milla, María C. Soria, Romina M. Russo, Juan P. Wulff, Haig H. Djambazian, Rolando R. Pomar, Alfred M. Handler, Kostas Bourtzis, Ioannis Ragoussis, Silvia B. Lanzavecchia   +15 more
wiley   +1 more source

UVES Observations of QSO 0000–2620: Oxygen and Zinc Abundances in the Damped Lyα Galaxy at zabs = 3.3901 [PDF]

, 2000
Observations of the QSO 0000-2620 with the Ultraviolet-Visual Echelle Spectrograph at the 8.2 m ESO Kueyen telescope are used for abundance analysis of the damped Lyα system at zabs = 3.3901.
P. Molaro, P. Bonifacio, M. Centurión, S. D’odorico, G. Vladilo, P. Santin, P. Di Marcantonio   +6 more
semanticscholar   +1 more source

Spatial Dynamics and Lifespan of Adult Cicadas After Fire and Logging: A Radiotracking Study

Integrative Zoology, EarlyView.
This study investigates the effects of wildfire and post‐fire salvage logging on the survival, spatial behavior, and habitat selection of Lyristes plebejus cicadas in Mediterranean pine forests. A total of 63 cicadas were captured, tagged with radio transmitters, and released in three disturbance contexts: burnt‐logged, burnt‐unlogged, and unburnt ...
Carles Tobella, Marc Franch, Josep M. Bas, Lluís Brotons, Pere Pons   +4 more
wiley   +1 more source

Chemical Abundances in Star-Forming Galaxies at High Redshift

, 2009
A galaxy's metallicity provides a record of star formation, gas accretion, and gas outflow, and is therefore one of the most informative measurements that can be made at high redshift. It is also one of the most difficult. I review methods of determining
Dawn K. Erb, Edmunds, Halliday, Lequeux, Mehlert   +4 more
core   +1 more source

Response of Fecal Bacteria and Fungi to Tannin‐Rich Diets in Sika Deer (Cervus nippon): Evidence from Both Feeding Experiments and Field Investigations

Integrative Zoology, EarlyView.
Feeding with tannin‐rich diets altered the fecal microbial composition and increased the relative abundance of tannin‐degrading microbes. We hypothesize that fecal bacteria and fungi may play important roles in helping herbivores adapt to tannin‐rich diets but respond to different tannin concentrations varies.
Di Zhu, Feng Wu, Peiying Wen, Haiyang Gao, Xiaoran Hao, Hongfang Wang   +5 more
wiley   +1 more source

Evidence of Gaia Enceladus Experiencing at Least Two Passages around the Milky Way

The Astrophysical Journal Letters
One of the major recent breakthroughs has been the discovery of the last major merger to happen in the history of the Milky Way. Around 10 Gyr ago, the galaxy Gaia Enceladus with an estimated ∼10% of the Milky Way mass, fell into the potential of our ...
Ása Skúladóttir, Heitor Ernandes, Diane K. Feuillet, Alice Mori, Sofia Feltzing, Romain E. R. Lucchesi, Paola Di Matteo   +6 more
doaj   +1 more source

XMM-Newton and Chandra Observations of the Galaxy Group NGC 5044. II. Metal Abundances and Supernova Fraction [PDF]

, 2003
Using new XMM and Chandra observations, we present an analysis of the metal abundances of the hot gas within a radius of 100 kpc of the bright nearby galaxy group NGC 5044.
D. Buote, A. Lewis, F. Brighenti, W. Mathews   +3 more
semanticscholar   +1 more source