The Ca II H and K lines are among the few features available to infer the metallicity of extremely metal-poor stars from medium-resolution spectroscopy...
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PublicaciónAccurate Metallicities for Very Metal-poor Stars from the Ca II Infrared Triplet
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PublicaciónBACCHUS Analysis of Weak Lines in APOGEE Spectra (BAWLAS)
Elements with weak and blended spectral features in stellar spectra are challenging to measure and require specialized analysis methods to precisely measure...
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NoticiaDetectan grandes cantidades de oxígeno en la atmósfera de una estrella primitiva
Científicos del Instituto de Astrofísica de Canarias (IAC), en colaboración con la Universidad de Cambridge y la Universidad de California en San Diego...
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PublicaciónOpen Cluster Chemical Homogeneity throughout the Milky Way
The chemical homogeneity of surviving stellar clusters contains important clues about interstellar medium (ISM) mixing efficiency, star formation, and the...
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PublicaciónOrbital Torus Imaging: Using Element Abundances to Map Orbits and Mass in the Milky Way
Many approaches to galaxy dynamics assume that the gravitational potential is simple and the distribution function is time invariant. Under these assumptions...
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PublicaciónPhotoionized Herbig-Haro Objects in the Orion Nebula through Deep High Spectral Resolution Spectroscopy. II. HH 204
We analyze the physical conditions, chemical composition, and other properties of the photoionized Herbig-Haro (HH) object HH 204 through Very Large Telescope...
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PublicaciónPhysical Parameters of SDSS Stars, the Nature of the SDSS `Ring around the Galaxy', and the SEGUE Project
Although the Sloan Digital Sky Survey (SDSS) was primarily envisioned as a tool for understanding the nature of the `high redshift' universe, significant...
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NoticiaPosible evidencia de formación planetaria en la Nebulosa de Orión
Una investigación internacional, dirigida por científicos del Instituto de Astrofísica de Canarias (IAC), ha mostrado la existencia de compuestos sólidos de...
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PublicaciónSEGUE-2: Old Milky Way Stars Near and Far
The Sloan Extension for Galactic Understanding and Exploration 2 (SEGUE-2) obtained 128,288 low-resolution spectra (R ~ 1800) of 118,958 unique stars in the...