Results 111 to 120 of about 7,914 (245)

Aperture and Resolution Effects on Ultraviolet Star-forming Properties: Insights from Local Galaxies and Implications for High-redshift Observations

The Astrophysical Journal
We present an analysis of the effects of spectral resolution and aperture scale on derived galaxy properties using far-ultraviolet (FUV) spectra of local star-forming galaxies from the International Ultraviolet Explorer ( R ∼ 250, field of view (FOV ...
Ilyse Clark, Danielle A. Berg, Claus Leitherer, Karla Z. Arellano-Córdova, Andreas A. C. Sander   +4 more
doaj   +1 more source

A characteristic oxygen abundance gradient in galaxy disks unveiled with CALIFA

, 2014
The authors thank the Viabilidad, Diseño, Acceso y Mejorafunding program, ICTS-2009-10, for supporting the initial development of this project. S.F.S., F.F.R.O. and D.
Lorenzo Cáceres, A. de, Wisotzki, L., L. Galbany, Bland- Hawthorn, J., D. Mast, J. Barrera-Ballesteros, Papaderos, P., Perez, E., P. Sánchez-Blazquez, González Delgado, R. M., Gonzalez Delgado, R., Lyubenova, M., Sanchez, S. F., R. Cid Fernandes, A. de Lorenzo-Cáceres, L. Wisotzki, de Paz, A. Gil, G. van de Ven, Cortijo Ferrero, C., P. Papaderos, Miralles-Caballero, D., Jahnke, K., Lucie Jílková, M. Mollá, J. Mendez-Abreu, Falcon-Barroso, J., Mendoza, M. A., Barrera-Ballesteros, J., F. F. Rosales-Ortega, Mendez Abreu, Jairo, Jilkova, Lucie, K. Jahnke, Garcia-Benito, R., B. García-Lorenzo, Falcon Barroso, J., R. García-Benito, S. Ellis, Cid Fernandes, R., Cortijo-Ferrero, C., Mendonza, M. A., Ellis, S., Mendez Abreu, J., Rosales-Ortega, F. F., Á. R. López-Sánchez, B. Husemann, Sánchez Blázquez, Patricia, D. Miralles-Caballero, Iglesias-Paramo, J., Vilchez, J. M., Marquez, I., Bland-Hawthorn, J., M. A. Mendoza, van de Ven, G., Marino, R. A., B. Jungwiert, Barrera Ballesteros, J., Galbany, L., C. J. Walcher, Sanchez-Blazquez, P., A. Gil de Paz, M. Lyubenova, Diaz, A. I., Miralles Caballero, D., Rosales Ortega, F. F., CALIFA Team, Mast, D., Marino, Raffaella Anna, Molla, M., J. M. Gomes, Husemann, B., Iglesias Páramo, J., J. M. Vílchez, Lopez-Sanchez, A. R., Gil De Paz, Armando, J. Bland-Hawthorn, García Lorenzo, B., Walcher, C. J., R. A. Marino, J. Iglesias-Páramo, A. I. Díaz, E. Pérez, I. Márquez, López Sánchez, Á. R., Garcia-Lorenzo, B., Jungwiert, B., S. F. Sánchez, R. González Delgado, J. Falcon-Barroso, De Lorenzo-Caceres Rodriguez, Adriana, Gomes, J. M., García Benito, R., C. Cortijo-Ferrero   +91 more
core   +1 more source

Chemical and kinematical evolution in nearby dwarf spheroidal galaxies [PDF]

, 2006
Dwarf spheroidal (dSph) galaxies are the least massive and luminous objects known to exist. These galaxies are often considered as the fossil building blocks of massive systems predicted by some cosmological models.
Koch, Andreas
core   +1 more source

Stellar Mergers or Truly Young? Intermediate-age Stars on Highly Radial Orbits in the Milky Way’s Stellar Halo

The Astrophysical Journal
Reconstructing the mass assembly history of the Milky Way relies on obtaining detailed measurements of the properties of many stars in the galaxy, especially in the stellar halo.
Danny Horta, Yuxi (Lucy) Lu, Melissa K. Ness, Mariangela Lisanti, Adrian M. Price-Whelan   +4 more
doaj   +1 more source

Mapping Immunity With Cutting‐Edge Spatial Biology and Tissue Cytometry Innovations

MedComm, Volume 7, Issue 6, June 2026.
This review explores how spatial biology integrates multiplexed imaging and tissue cytometry to reveal immune organization within native tissue contexts. ABSTRACT The immune system operates within organized tissue landscapes, where spatial relationships between cells shape the nature and outcome of immune responses.
Lilibeth Cárdenas‐Piedra, Selwin G. Samuel, Felicitas Mungenast, Dinesh Yasothkumar, Rupert C. Ecker, Jyotsna Batra   +5 more
wiley   +1 more source

An improved model of chemical evolution within the Milky Way galaxy

, 2016
This thesis project involves the improvement of existing computer code, which is used in modeling the galactic chemical evolution (GCE) of the Milky Way Galaxy. The ultimate goal of a GCE analysis is to reliably predict abundances for all observationally
Lerman, Andrew Ryan
core  

APOGEE Chemical Abundances of the Sagittarius Dwarf Galaxy

, 2017
Indexación: ScopusThe Apache Point Observatory Galactic Evolution Experiment provides the opportunity of measuring elemental abundances for C, N, O, Na, Mg, Al, Si, P, K, Ca, V, Cr, Mn, Fe, Co, and Ni in vast numbers of stars.
Verne Smith, Peter Frinchaboy, Alvar, Emma Fernández, Doug Geisler, McWilliam, Andrew, Jon Holtzman, Holtzman, Jon, David L. Nidever, Shetrone, Matthew, Allende Prieto, Carlos, Carlos Allende Prieto, Almeida, Andres, Baitian Tang, Jennifer Sobeck, J. G. Fernández-Trincado, Tissera, Patricia B., Andres Almeida, Villanova, Sandro, Vinicius M. Placco, Fernández-Trincado J.G., Carigi, Leticia, Timothy C. Beers, Steven R. Majewski, Nidever, David L., Gloria Delgado Inglada, Delgado Inglada, Gloria, Andrew McWilliam, Sten Hasselquist, Giuseppina Battaglia, Hasselquist, Sten, Anguiano, Borja, Geisler, Doug, Schultheis, Mathias, Placco, Vinicius M., Majewski, Steven R., Dante Minniti, Sobeck, Jennifer, Garcia-Hernández D.A., Matthew Shetrone, Leticia Carigi, Battaglia, Giuseppina, Emma Fernández Alvar, D. A. García-Hernández, Mathias Schultheis, Smith, Verne, Minniti, Dante, Borja Anguiano, Tang, Baitian, Patricia B. Tissera, Sandro Villanova, Frinchaboy, Peter, Beers, Timothy C.   +51 more
core   +1 more source

On the Formation of Star-forming Galaxies Having Anomalously Low-metallicity Regions: The Role of Galaxy Interaction and Circumgalactic Medium/Intergalactic Medium Accretion

The Astrophysical Journal
Gas accretion from both the circumgalactic medium (CGM)/intergalactic medium (IGM) and interacting companion galaxy can dilute the gas phase metallicity of a galaxy. However, their relative contribution to the chemical evolution of galaxies remains to be
Yibo Cao, Zhizheng Pan
doaj   +1 more source

Predicting Nitrogen Isotope Fractionation in Nitrate Deposition on Early Mars

Journal of Geophysical Research: Planets, Volume 131, Issue 6, June 2026.
Abstract Noachian and early Hesperian Mars were likely warm and wet, with an atmosphere abundant in molecular nitrogen. The recent discovery of nitrate deposits in the Yellowknife Bay mudstones at Gale Crater confirm the existence of nitrogen oxides (NOX) on Noachian Mars. The processes responsible for the production of these nitrates would fractionate
J. Shawcross, D. J. Adams, M. L. Wong, K. J. Smith, Y. L. Yung   +4 more
wiley   +1 more source

Optimizing End-to-End System Performance for Millimeter and Submillimeter Spectroscopy of Protostars: Wideband Heterodyne Receivers and Sideband-Deconvolution Techniques for Rapid Molecular-Line Surveys [PDF]

, 2011
This thesis describes the construction, integration, and use of a new 230-GHz ultra-wideband heterodyne receiver, as well as the development and testing of a new sideband-deconvolution algorithm, both designed to enable rapid, sensitive molecular-line ...
Sumner, Matthew Casey
core   +1 more source