Aluminum-, Calcium- And Titanium-Rich Oxide Stardust In Ordinary Chondrite Meteorites (2008)
Nittler, Larry R., Alexander, Conel M. O'D., Gallino, Roberto, Hoppe, Peter, Nguyen, Ann N., Stadermann, Frank J., ...
We report isotopic data for a total of 96 presolar oxide grains found in residues of several unequilibrated ordinary chondrite meteorites. Identified grain types include Al2O3, MgAl2O4, hibonite...
Roederer, Ian U., Frebel, Anna, Shetrone, Matthew D., Prieto, Carlos Allende, Rhee, Jaehyon, Gallino, Roberto, ...
We present the first detailed abundance analysis of the metal-poor giant HKII 17435-00532. This star was observed as part of the University of Texas long-term project "Chemical Abundances of Stars in...
CS22964-161: A Double-Lined Carbon- and s-Process-Enhanced Metal-Poor Binary Star (2007)
Thompson, Ian B., Ivans, Inese I., Bisterzo, Sara, Sneden, Christopher, Gallino, Roberto, Vauclair, Sylvie, ...
A detailed high-resolution spectroscopic analysis is presented for the carbon-rich low metallicity Galactic halo object CS 22964-161. We have discovered that CS 22964-161 is a double-lined...
S- and R-Process Elements in Two Very Metal-Poor Stars (2007)
Sean Ryan Wako, Sean G. Ryan, John E. Norris, Timothy C, Roberto Gallino, ...
. New measurements of neutron-capture elements are presented for two very metal-poor stars ([Fe/H] \Gamma3). One (LP 625-44) has an s-process signature believed to be due to mass transfer from a...
Karakas, Amanda, Lugaro, Maria, Gallino, Roberto
Observations of planetary nebulae (PNe) by Sterling, Dinerstein and Bowers have revealed abundances in the neutron-capture element Germanium (Ge) from solar to factors of 3 -- 10 above solar. The...
Aoki, Wako, Bisterzo, Sara, Gallino, Roberto, Beers, Timothy C., Norris, John E., Ryan, Sean G., ...
We have investigated the abundances of heavy neutron-capture elements, including osmium (Os) and iridium (Ir), in the two Carbon-Enhanced Metal-Poor (CEMP) subgiants CS31062-050 and LP625-44....
Near-UV Observations of HD221170: New Insights into the Nature of r-Process-Rich Stars (2006)
Ivans, Inese I., Simmerer, Jennifer, Sneden, Christopher, Lawler, James E., Cowan, John J., Gallino, Roberto, ...
Employing high resolution spectra obtained with the near-UV sensitive detector on the Keck I HIRES, supplemented by data obtained with the McDonald Observatory 2-d coude, we have performed a...
Cosmological implications of dwarf spheroidal chemical evolution (2006)
Fenner, Yeshe, Gibson, Brad K., Gallino, Roberto, Lugaro, Maria
The chemical properties of dwarf spheroidals in the local group are shown to be inconsistent with star formation being truncated after the reionization epoch (z~8). Enhanced levels of [Ba/Y] in stars...
Germanium in damped Lyman-alpha systems and copper connection (2006)
Gallino, Roberto, Pignatari, M., Bisterzo, S., Prochaska, Jason X., Fenner, Y., Heger, Alexander, ...
From the analysis of recent high-resolution spectroscopy data of Cu in unevolved galactic stars at various metallicities, as compared with nucleosynthesis predictions in massive stars exploding as...
Germanium in damped Lyman-alpha systems and copper connection (2006)
Gallino, Roberto, Pignatari, M., Bisterzo, S., Prochaska, Jason X., Fenner, Y., Heger, Alexander, ...
From the analysis of recent high-resolution spectroscopy data of Cu in unevolved galactic stars at various metallicities, as compared with nucleosynthesis predictions in massive stars exploding as...
Ivans, Inese I., Sneden, Christopher, Gallino, Roberto, Cowan, John J., Preston, George W.
Employing spectra obtained with the new Keck I HIRES near-UV sensitive detector, we have performed a comprehensive chemical composition analysis of the binary blue metal-poor star CS29497-030....
9th International Symposium on Nuclear Astrophysic: Nuclei in the Cosmos (2005)
D'Auria, John, Cederkäll, Joakim, Fraile-Prieto, L M, Fynbo, Hans, Gallino, Roberto
Galactic evolution of Sr, Y, and Zr : a multiplicity of nucleosynthetic processes (2004)
Travglio, Claudia, Gallino, Roberto, Arnone, Enrico, Cowan, John, Jordan, Faith, Sneden, Christopher
Reyniers, Maarten, Van Winckel, Hans, Gallino, Roberto, Straniero, Oscar
In an effort to extend the still limited sample of s-process enriched post-AGB stars, high-resolution, high signal-to-noise VLT+UVES spectra of the optical counterparts of the infrared sources...
Straniero, Oscar, Dominguez, Inma, Cristallo, Sergio, Gallino, Roberto
We have extended our published set of low mass AGB stellar models to lower metallicity. Different mass loss rates have been explored. Interpolation formulae for luminosity, effective temperature,...
Galactic Evolution of Sr, Y, Zr: A Multiplicity of Nucleosynthetic Processes (2003)
Travaglio, Claudia, Gallino, Roberto, Arnone, Enrico, Cowan, John, Jordan, Faith, Sneden, Chris
We follow the Galactic enrichment of three easily observed light n-capture elements Sr,Y,and Zr.Input stellar yields have been first separated into their respective main and weak s-process,and...
s-Process Nucleosynthesis in AGB Stars: A Test for Stellar Evolution (2002)
Lugaro, Maria, Herwig, Falk, Lattanzio, John C., Gallino, Roberto, Straniero, Oscar
[abridged] We study the s-process in AGB stars using three different stellar evolutionary models computed for a 3Msun and solar metallicity star. First we investigate the formation and the efficiency...
Lead: Asymptotic Giant Branch production and Galactic Chemical Evolution (2000)
Travaglio, Claudia, Gallino, Roberto, Busso, Maurizio, Gratton, Raffaele
The enrichment of Pb in the Galaxy is followed in the framework of a detailed model of Galactic chemical evolution that already proved adequate to reproduce the chemical enrichment of O and of the...
s- and r-process elements in two very metal-poor stars (2000)
Ryan, Sean G., Aoki, Wako, Blake, Lisa A. J., Norris, John E., Beers, Timothy C., Gallino, Roberto, ...
New measurements of neutron-capture elements are presented for two very metal-poor stars ([Fe/H] ~ -3). One (LP 625-44) has an s-process signature believed to be due to mass transfer from a...
Si Isotopic Ratios in Mainstream Presolar SiC Grains Revisited (1999)
Lugaro, Maria, Zinner, Ernst, Gallino, Roberto, Amari, Sachiko
Although mainstream SiC grains, the major group of presolar SiC grains found in meteorites, are believed to have originated in the expanding envelope of asymptotic giant branch (AGB) stars during...
Lugaro, Maria, Gallino, Roberto, Busso, Maurizio, Amari, Sachiko, Zinner, Ernst
Mainstream presolar SiC grains from primitive meteorites show a clear s-process signature in the isotopic composition of heavy trace elements. These grains most likely condensed in the winds of a...