Results 1 to 10 of about 1,884 (262)

Solar and stellar photospheric abundances

Living Reviews in Solar Physics, 2016
The determination of photospheric abundances in late-type stars from spectroscopic observations is a well-established field, built on solid theoretical foundations.
CARLOS Allende Prieto, Allende Prieto CARLOS   +1 more
exaly   +5 more sources

Accuracy and Precision of Industrial Stellar Abundances [PDF]

Annual Review of Astronomy and Astrophysics, 2019
There has been an incredibly large investment in obtaining high-resolution stellar spectra for determining chemical abundances of stars. This information is crucial to answer fundamental questions in astronomy by constraining the formation and evolution scenarios of the Milky Way as well as the stars and planets residing in it.
Ulrike Heiter, Paula Jofre
exaly   +4 more sources

Stellar abundances of beryllium and CUBES [PDF]

Astrophysics and Space Science, 2014
11 pages, 8 figures. To appear in Astrophysics and Space Science "Special Issue: UV Astronomy 3", Proceedings of the ESO/NUVA/IAG Workshop on Challenges in UV Astronomy, ESO Garching, 7-11 October ...
R Smiljanic
exaly   +3 more sources

On the Hunt for the Origins of the Orphan–Chenab Stream: Detailed Element Abundances with APOGEE and Gaia

The Astrophysical Journal, 2023
Stellar streams in the Galactic halo are useful probes of the assembly of galaxies like the Milky Way. Many tidal stellar streams that have been found in recent years are accompanied by a known progenitor globular cluster or dwarf galaxy.
Keith Hawkins, Adrian M. Price-Whelan, Allyson A. Sheffield, Aidan Z. Subrahimovic, Rachael L. Beaton, Vasily Belokurov, Denis Erkal, Sergey E. Koposov, Richard R. Lane, Chervin F. P. Laporte, Christian Nitschelm   +10 more
doaj   +1 more source

The Metallicity and Distance of Leo A from Blue Supergiants

The Astrophysical Journal, 2023
We have obtained high-quality spectra of blue supergiant candidates in the dwarf irregular galaxy Leo A with the Low Resolution Imaging Spectrometer at the Keck I telescope.
Miguel A. Urbaneja, Fabio Bresolin, Rolf-Peter Kudritzki   +2 more
doaj   +1 more source

Chemical Analysis of the Brightest Star of the Cetus II Ultrafaint Dwarf Galaxy Candidate

The Astrophysical Journal, 2023
We present a detailed chemical abundance analysis of the brightest star in the ultrafaint dwarf (UFD) galaxy candidate Cetus II from high-resolution Magellan/MIKE spectra.
K. B. Webber, T. T. Hansen, J. L. Marshall, J. D. Simon, A. B. Pace, B. Mutlu-Pakdil, A. Drlica-Wagner, C. E. Martínez-Vázquez, M. Aguena, S. S. Allam, O. Alves, E. Bertin, D. Brooks, A. Carnero Rosell, J. Carretero, L. N. da Costa, J. De Vicente, P. Doel, I. Ferrero, D. Friedel, J. Frieman, J. García-Bellido, G. Giannini, D. Gruen, R. A. Gruendl, S. R. Hinton, D. L. Hollowood, K. Honscheid, K. Kuehn, J. Mena-Fernández, F. Menanteau, R. Miquel, R. L. C. Ogando, M. E. S. Pereira, A. Pieres, A. A. Plazas Malagón, E. Sanchez, B. Santiago, J. Allyn Smith, M. Smith, E. Suchyta, G. Tarle, C. To, N. Weaverdyck, B. Yanny   +44 more
doaj   +1 more source

Theoretical Predictions of Surface Light Element Abundances in Protostellar and Pre-Main Sequence Phase

Frontiers in Astronomy and Space Sciences, 2021
Theoretical prediction of surface stellar abundances of light elements–lithium, beryllium, and boron–represents one of the most interesting open problems in astrophysics.
E. Tognelli, E. Tognelli, S. Degl’Innocenti, S. Degl’Innocenti, P. G. Prada Moroni, P. G. Prada Moroni, L. Lamia, L. Lamia, L. Lamia, R. G. Pizzone, A. Tumino, A. Tumino, C. Spitaleri, C. Spitaleri, A. Chiavassa   +14 more
doaj   +1 more source

Robust Data-driven Metallicities for 175 Million Stars from Gaia XP Spectra

The Astrophysical Journal Supplement Series, 2023
We derive and publish data-driven estimates of stellar metallicity [M/H] for ∼175 million stars with low-resolution XP spectra published in Gaia DR3.
René Andrae, Hans-Walter Rix, Vedant Chandra   +2 more
doaj   +1 more source

Clustering in the stellar abundance space [PDF]

Monthly Notices of the Royal Astronomical Society, 2017
15 pages, 13 figures, accepted by MNRAS, author scientific names were ...
Boesso, R., Rocha-Pinto, H. J.
openaire   +2 more sources

Chemical abundances of the Typhon stellar stream

Monthly Notices of the Royal Astronomical Society, 2022
ABSTRACT We present the first high-resolution chemical abundances of seven stars in the recently discovered high-energy stream Typhon. Typhon stars have apocentres r ≳ 100 kpc, making this the first detailed chemical picture of the Milky Way’s very distant stellar halo.
Alexander P Ji, Rohan P Naidu, Kaley Brauer, Yuan-Sen Ting, Joshua D Simon   +4 more
openaire   +2 more sources