Results 61 to 70 of about 4,372,191 (364)

Recent Development of the Atomic Line List

Galaxies, 2018
The Atomic Line List is an online database of wavelengths and transition probabilities of atomic lines. It is primarily set up as a tool to help identify unknown spectral features.
Peter A. M. van Hoof
doaj   +1 more source

ASPCAP: THE APOGEE STELLAR PARAMETER AND CHEMICAL ABUNDANCES PIPELINE [PDF]

, 2015
The Apache Point Observatory Galactic Evolution Experiment (APOGEE) has built the largest moderately high-resolution (R ≈ 22,500) spectroscopic map of the stars across the Milky Way, and including dust-obscured areas.
A. G. García Pérez, C. Prieto, J. Holtzman, M. Shetrone, S. M'esz'aros, D. Bizyaev, R. Carrera, K. Cunha, D. A. Garc'ia-Hern'andez, Jennifer A. Johnson, S. Majewski, D. Nidever, R. Schiavon, N. Shane, V. Smith, J. Sobeck, N. Troup, O. Zamora, D. Weinberg, J. Bovy, D. Eisenstein, D. Feuillet, P. Frinchaboy, M. Hayden, F. Hearty, D. Nguyen, R. O’Connell, M. Pinsonneault, John C. Wilson, G. Zasowski   +29 more
semanticscholar   +1 more source

Baade's window and APOGEE. Metallicities, ages, and chemical abundances [PDF]

, 2017
Context. Baade's window (BW) is one of the most observed Galactic bulge fields in terms of chemical abundances. Owing to its low and homogeneous interstellar absorption it is considered the perfect calibration field for Galactic bulge studies. Aims.
M. Schultheis, Á. Rojas-Arriagada, A. P'erez, H. Jőnsson, M. Hayden, G. Nandakumar, K. Cunha, C. Prieto, J. Holtzman, T. Beers, D. Bizyaev, J. Brinkmann, R. Carrera, R. Cohen, D. Geisler, F. Hearty, J. G. Fern'andez-Trincado, C. Maraston, D. Minniti, C. Nitschelm, A. Roman-Lopes, D. Schneider, B. Tang, S. Villanova, G. Zasowski, S. Majewski   +25 more
semanticscholar   +1 more source

Non-LTE abundances of Mg and K in extremely metal-poor stars and the evolution of [O/Mg], [Na/Mg], [Al/Mg] and [K/Mg] in the Milky Way [PDF]

, 2010
LTE abundances of light elements in extremely metal-poor (EMP) stars have been previously derived from high quality spectra. New derivations, free from the NLTE effects, will better constrain the models of the Galactic chemical evolution and the yields ...
Andrievsky, S. M., Bonifacio, P., Cayrel, R., François, P., Hill, V., Korotin, S. A., Spite, F., Spite, Monique   +7 more
core   +5 more sources

Chemical Abundances in Field Red Giants from High-Resolution H-Band Spectra using the APOGEE Spectral Linelist

, 2012
High-resolution H-band spectra of five bright field K, M, and MS giants, obtained from the archives of the Kitt Peak National Observatory (KPNO) Fourier Transform Spectrometer (FTS), are analyzed to determine chemical abundances of 16 elements.
Bizyaev, Dmitry, Cunha, Katia, Holtzman, Jon, Johnson, Jennifer A., Majewski, Steven R., Meszaros, Szabolcs, Perez, Ana Garcia, Prieto, Carlos Allende, Schiavon, Ricardo, Shetrone, Matthew D., Smith, Verne V.   +10 more
core   +1 more source

Chemical Abundances of a Sample of Oxygen-dominated Galaxies

The Astrophysical Journal, 2023
We spectroscopically analyzed a sample of 85 Sloan Digital Sky Survey compact, oxygen-dominated galaxies located at redshift z ∼ 0.001–0.350, selected because of their large equivalent width of [O iii ] λ 5007 (larger than 200 Å). These galaxies might be
B. E. Miranda-Pérez, A. M. Hidalgo-Gámez   +1 more
doaj   +1 more source

Chemical abundances in the nucleus of the Sagittarius dwarf spheroidal galaxy [PDF]

, 2017
We present Iron, Magnesium, Calcium, and Titanium abundances for 235 stars in the central region of the Sagittarius dwarf spheroidal galaxy (within 9.0 arcmin ~70 pc from the center) from medium-resolution Keck/DEIMOS spectra.
A. Mucciarelli, M. Bellazzini, R. Ibata, D. Romano, S. Chapman, L. Monaco   +5 more
semanticscholar   +1 more source

A Systematic NLTE Study of Very Metal-poor Stars with Metallicity down to −4.3 dex. I. Global Stellar Parameters Based on High-resolution Spectra

The Astrophysical Journal
Very metal-poor (VMP) stars provide a record of the chemical composition and dynamics of the early Galaxy. Based on the high-resolution and high signal-to-noise ratio spectra from the Subaru Telescope for 103 VMP stars, in this series of papers we ...
Jianrong Shi, Gang Zhao, Shuai Liu, Zeming Zhou, Haining Li, Hongliang Yan, Sofya Alexeeva, Huawei Zhang, Wako Aoki, Tadafumi Matsuno, Jingkun Zhao, Huiling Chen, Yufu Shen   +12 more
doaj   +1 more source

Chemical fractionation and abundances in coronal plasma [PDF]

Advances in Space Research, 2003
10 pages, 4 figures, to appear in Adv.Sp ...
openaire   +3 more sources

The RAVE-on Catalog of Stellar Atmospheric Parameters and Chemical Abundances for Chemo-dynamic Studies in the Gaia Era [PDF]

, 2016
The orbits, atmospheric parameters, chemical abundances, and ages of individual stars in the Milky Way provide the most comprehensive illustration of galaxy formation available.
A. Casey, K. Hawkins, D. Hogg, M. Ness, Hans Walter-Rix, G. Kordopatis, A. Kunder, M. Steinmetz, Sergey E. Koposov, H. Enke, J. Sanders, G. Gilmore, T. Zwitter, K. Freeman, L. Casagrande, G. Matijevivc, G. Seabroke, O. Bienaym'e, J. Bland-Hawthorn, B. Gibson, E. Grebel, A. Helmi, U. Munari, J. Navarro, W. Reid, A. Siebert, R. Wyse   +26 more
semanticscholar   +1 more source