Sgr B2(N2) Archives

Time-averaged chemical evolution of the studied species across all second stage models, as defined in Tab. 2. Line styles and shading follow those in Fig. 1. Only gas-phase abundances above the detectable threshold (X > 10−14) are considered. Changes in abundance, including both enhancement and depletion, generally follow the timescales seen in the average temperature profiles (see Fig. 1). In models of protostellar objects, the species that most frequently dominates over the others is HCN, whereas in shocks, CH3OH is the most dominant during the shock phase, while SiO takes over in the post-shock phase. -- astro-ph.GA

Astrochemistry, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Biophysics, Biosignatures & Paleobiology, Imaging & Spectroscopy, Interstellar, Status Report

Chemical Templates Of The Central Molecular Zone. Shock And Protostellar Object Signatures Under Galactic Center Conditions

by Keith CowingAugust 15, 2025August 15, 2025

(Abridged) The Central Molecular Zone (CMZ) of the Milky Way exhibits extreme conditions, including high gas densities, elevated temperatures, enhanced cosmic-ray ionization rates, and large-scale dynamics. Large-scale molecular surveys reveal […]

Sgr B2(N2)

Chemical Templates Of The Central Molecular Zone. Shock And Protostellar Object Signatures Under Galactic Center Conditions

Juice Astrobiology Mission To Fly Past Earth For Third Gravity Assist

Planetary Health Check 2026 Finds Mounting Pressures Across Earth’s Life Support Systems – Reports And Proceedings

Prebiotic Peptide Formation Triggered By Urea-rich Warm Little Ponds On Early Earth

Thyles Rupes Region Of Mars

Do Himalayan-style Mountains Lie Under The Antarctic ice: Implication For The Gondwana Supermountains, The Rise Of Oxygen And The Cambrian Explosion?