Results 141 to 150 of about 271,788 (231)

Chemical abundances and small-scale gas kinematics in the local star-forming galaxy NGC 2366

International audienceWe present a detailed spectroscopic study of ionised gas in the nearby (~3.3Mpc) dwarf galaxy NGC 2366, a local analogue of Green Pea galaxies, based on observations with the SCORPIO-2 instrument at the Russian 6-m BTA telescope ...
Moiseev, Alexei V, Vasiliev, Konstantin I, Lozinskaya, Tatiana A, Yarovova, Anastasiya D, Egorov, Oleg V, Gerasimov, Ivan S   +5 more
core   +1 more source

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., Fernández Trincado, J. G., Tissera, Patricia Beatriz, García-Hernández, D. A.   +54 more
core   +1 more source

Iron Snails: Nonequilibrium Dynamics and Spiral Abundance Patterns

The Astrophysical Journal
Galaxies are not in a dynamical steady state: they continually undergo perturbations, e.g., from infalling dwarf galaxies and dark matter substructure. After a dynamical perturbation, stars phase mix toward a new steady state; in so doing, they generally
Neige Frankel, David W. Hogg, Scott Tremaine, Adrian Price-Whelan, Jeff Shen   +4 more
doaj   +1 more source

Chemical Abundance Gradients in Open Clusters from the Gaia/LAMOST Sample

The Astronomical Journal
Based on a large and homogeneous sample of 299 open clusters (OCs) from Gaia DR3 and large sky area multiobject fiber spectroscopic telescope DR11, we studied the abundance gradients of the α -elements Mg and Si, and the iron-peak elements Fe and Ni to ...
Guochao Yang, Jingkun Zhao, Yong Yang, Nian Liu, Yangping Luo, Gang Zhao   +5 more
doaj   +1 more source

The Apache Point Observatory Extra-galactic Evolution Experiment (APOeGEE): Chemical Abundance Trends for Seven Dwarf Spheroidal Galaxies in the APOGEE Survey

The Astrophysical Journal
In addition to comprehensive surveys of the Milky Way (MW) bulge, disk, and halo, the Apache Point Galactic Evolution Experiment (APOGEE) project observed seven dwarf spheroidal satellites (dSphs) of the MW: Carina, Sextans, Sculptor, Draco, Ursa Minor ...
Matthew Shetrone, Rachael L. Beaton, Christian R. Hayes, Sten Hasselquist, Joshua D. Simon, Jon A. Holtzman, Katia Cunha, Steven R. Majewski, Jennifer Sobeck, Ricardo Schiavon, Thomas Masseron, Verne V. Smith, David L. Nidever   +12 more
doaj   +1 more source

The Hot and Energetic Universe:The evolution of galaxy groups and clusters [PDF]

, 2013
Major astrophysical questions related to the formation and evolution of structures, and more specifically of galaxy groups and clusters, will still be open in the coming decade and beyond: what is the interplay of galaxy, supermassive black hole, and ...
Bourdin, H., Maughan, B., Molendi, S., Mohr, J., von der Linden, A., Borgani, S., Sanders, J., Biffi, V., Dolag, K., H. Reiprich, T., Clerc, N., Smith, R., Springel, V., Arnaud, M., Brueggen, M., Finoguenov, A., Hoekstra, H., Hildebrandt, H., Marrone, D., Pointecouteau, E., Rasia, E., Boehringer, H., Romer, K., Schwope, A., Mazzotta, P., de Plaa, J., Nevalainen, J., Pierre, M., Borm, K., W. Pratt, G., Kaastra, J., Schrabback, T., Allen, S., Fassbender, R., Schindler, S., Ramos-Ceja, M., Lovisari, L., Ohashi, T., Pacaud, F., Adami, C., Elbaz, D., Bulbul, E., Ota, N., H. Croston, J., -Y. Zhang, Y., Brunetti, G., Ettori, S., Lamer, G.   +47 more
core  

The High-Redshift Gas-Phase Mass–Metallicity Relation in FIRE-2

The Astrophysical Journal Letters
The unprecedented infrared spectroscopic capabilities of JWST have provided high-quality interstellar medium metallicity measurements and enabled characterization of the gas-phase mass–metallicity relation (MZR) for galaxies at z ≳ 5 for the first time ...
Andrew Marszewski, Guochao Sun, Claude-André Faucher-Giguère, Christopher C. Hayward, Robert Feldmann   +4 more
doaj   +1 more source

A Perspective on the Milky Way Bulge Bar as Seen from the Neutron-capture Elements Cerium and Neodymium with APOGEE

The Astrophysical Journal
This study probes the chemical abundances of the neutron-capture elements cerium and neodymium in the inner Milky Way from an analysis of a sample of ∼2000 stars in the Galactic bulge bar spatially contained within ∣ X _Gal ∣ < 5 kpc, ∣ Y _Gal ∣ < 3.5 ...
J. V. Sales-Silva, K. Cunha, V. V. Smith, S. Daflon, D. Souto, R. Guerço, A. Queiroz, C. Chiappini, C. R. Hayes, T. Masseron, Sten Hasselquist, D. Horta, N. Prantzos, M. Zoccali, C. Allende Prieto, B. Barbuy, R. Beaton, D. Bizyaev, J. G. Fernández-Trincado, P. M. Frinchaboy, J. A. Holtzman, J. A. Johnson, Henrik Jönsson, S. R. Majewski, D. Minniti, D. L. Nidever, R. P. Schiavon, M. Schultheis, J. Sobeck, G. S. Stringfellow, G. Zasowski   +30 more
doaj   +1 more source

Accurate determination of chemical abundances near a supermassive black hole. [PDF]

Nat Astron
XRISM Collaboration.
europepmc   +1 more source

Galactic outflows and star-formation quenching: a JWST perspective. [PDF]

Astrophys Space Sci
Davies RL, Belli S.
europepmc   +1 more source