Results 111 to 120 of about 50,982 (241)

Chemical Doppelgangers in GALAH DR3: The Distinguishing Power of Neutron-capture Elements among Milky Way Disk Stars

The Astrophysical Journal
The observed chemical diversity of Milky Way stars places important constraints on Galactic chemical evolution and the mixing processes that operate within the interstellar medium. Recent works have found that the chemical diversity of disk stars is low.
Catherine Manea, Keith Hawkins, Melissa K. Ness, Sven Buder, Sarah L. Martell, Daniel B. Zucker   +5 more
doaj   +1 more source

A metal-poor star with abundances from a pair-instability supernova. [PDF]

Nature, 2023
Xing QF, Zhao G, Liu ZW, Heger A, Han ZW, Aoki W, Chen YQ, Ishigaki MN, Li HN, Zhao JK.   +9 more
europepmc   +1 more source

Abundances in galactic H2 regions, 3: G25.4-0.2, G45.5+0.06, M8, S159 and DR22 [PDF]

Measurements of the ARII (6.99 microns), ArIII (8.99 microns), NeII (12.81 microns), SIII (18.71 microns), and SIV (10.51 microns) lines are presented for five compact HII regions along with continuum spectroscopy.
Briotta, D. A., Jr., Helfner, H. L., Herter, T., Houck, J. R., Jones, B., Pipher, J. L., Willner, S. P.   +6 more
core   +1 more source

Investigating Phosphorus Abundances in a Sample of APOGEE-2 Bulge Globular Clusters

The Astronomical Journal
Phosphorus-enhanced (P-rich; [P/Fe] ≳ +0.8) giants have been found among mildly metal-poor field stars, but in only one star in a globular cluster (GC), M4 (NGC 6121).
Beatriz Barbuy, José G. Fernández-Trincado, Morgan S. Camargo, Doug Geisler, Maren Brauner, Sandro Villanova, Dante Minniti, Domingo Anibal García-Hernández, Stefano O. Souza, Heitor Ernandes, Amâncio Friaça, Marco Pignatari   +11 more
doaj   +1 more source

Whither or Wither the Sulfur Anomaly in Planetary Nebulae?

The Astrophysical Journal Letters
We present a thorough investigation of the long-standing sulfur anomaly enigma. Our analysis uses chemical abundances from the most extensive data set available for 126 planetary nebulae (PNs) with improved accuracy and reduced uncertainties from a 10° ×
Shuyu Tan, Quentin A. Parker
doaj   +1 more source

The age of the galactic cosmic rays derived from the abundance of Be-10

, 1977
M. García-Muñoz, G. M. Mason, J. A. Simpson   +2 more
openalex   +1 more source

The Deuterium Abundance In The Galactic Center 50 km/s Molecular Cloud: Evidence For A Cosmological Origin Of D [PDF]

, 2000
D. A. Lubowich, Jay M. Pasachoff, Robert P. Galloway, T. J. Balonek, Christy Tremonti, T. J. Millar, Helen Roberts   +6 more
openalex   +1 more source

Revealing the Origins of Galactic Globular Clusters via their Mg–Al Abundances

The Astrophysical Journal Letters
Many Galactic globular clusters (GCs) originated in diverse host galaxies before being subsequently incorporated into the Milky Way through hierarchical galaxy assembly. Identifying their origins is crucial for revealing galaxy properties at early times.
Shihui Lin, Baitian Tang, Genghao Liu, José G. Fernández-Trincado, Douglas Geisler, Guy Worthey, Dante Minniti   +6 more
doaj   +1 more source

A secondary tracer approach to the derivation of galactic cosmic-ray source isotopic abundances

, 1979
E. C. Stone, M. E. Wiedenbeck
openalex   +1 more source

Using Cepheids to determine the galactic abundance gradient [PDF]

, 2002
S. M. Andrievsky, D. Bersier, V. V. Kovtyukh, R. E. Luck, W. J. Maciel, J. R. D. Lépine, Yu. V. Beletsky   +6 more
openalex   +3 more sources