Elemental Abundances Archives

Mean abundance measurements of our sample with standard errors of the means (standard deviation divided by square root of number of stars) as a function of condensation temperature compared to the Sun. Top: All test set solar analogs as navy filled circles and identified planet hosts as orange hexagons. The Sun appears relatively refractory depleted with increasing condensation temperature compared to these samples replicating Bedell et al. (2018), and the solar analogs and planet hosts are chemically indistinguishable within 2-3σ. Bottom: All test set solar analogs as navy filled circles, close-in giant planet hosts as purple unfilled circles, giant planet hosts as pink unfilled diamonds, and terrestrial/small planet hosts as green unfilled squares. The Sun still appears relatively depleted compared to these four samples, which are still chemically indistinguishable within 2-3σ. -- astro-ph.SR

Astrogeology, Astronomy & Telescopes, Exoplanets, -moons, -comets, Gaia Mission, Space Weather & Heliophysics, Status Report, Stellar Cartography

The Sun Remains Relatively Refractory Depleted: Elemental Abundances for 17,412 Gaia RVS Solar Analogs and 50 Planet Hosts

by Keith CowingFebruary 28, 2024November 16, 2024

The elemental abundances of stars, particularly the refractory elements (e.g., Fe, Si, Mg), play an important role in connecting stars to their planets.

Elemental Abundances

The Sun Remains Relatively Refractory Depleted: Elemental Abundances for 17,412 Gaia RVS Solar Analogs and 50 Planet Hosts

Roman Space Telescope: Enabling Images Of Distant Worlds

NASA Solar System Exploration Research Virtual Institute (SSERVI) Cooperative Agreement Notice (NNH26ZDA016C) Final Text And Due Dates

Interstellar Aromatic Infrared Bands: IR Absorption Spectroscopy Of The Lowest Triplet State Of Naphthalene

The Highly Unusual Behavior And Chemical Composition Of Interstellar Comet 2I/Borisov

Volatile Depletion In Rocky Planets As A Chemical Fingerprint Of Hybrid Accretion