L483 Archives

Sensitivity analysis of our model to the oxygen atom diffusion energy for CO2 ice (dashed lines) and FA (suming c-t abundances). Values are represented with respect to H2O column density- The difussion Ediff energy is defined from the Ediff/Ebin parameter in our models. Ediff/Ebin is set to 0.25, 0.30 and 0.40 in those models. The pale blue zone represents the observationally constrained abundances of CO2 (Boogert et al. 2015; McClure et al. 2023) and the pale yellow zone represent the same for FA (Boogert et al. 2015; Rocha et al. 2024). We assume that FA and HCOO– abundances sum. -- astro-ph.GA

Astrochemistry, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Impact events, Interstellar, Status Report

Piecing Together Formic Acid Isomerism In Dark Clouds. Detection Of Cis-formic Acid In TMC-1 And Astrochemical Modeling

by Keith CowingSeptember 25, 2025

The presence of molecular isomers in interstellar environments has become a topic of growing interest within the astrochemical community.

Two individual lines of C6H5CN (left and middle panels) and the stacked spectrum of C6H5CN (right panels) for L1495B (top row), Lupus-1A (middle row), and L483 (bottom row), using the 130,13-120,12 line at 32833.813 MHz as a reference. The number of stacked lines and the significance level of the line stack signal (in units of σ) are indicated in the right panels. The systemic velocity of each source is indicated by a vertical dotted line. -- astro-ph.GA

Astrochemistry, Astronomy & Telescopes, Imaging & Spectroscopy, Status Report

How Widespread Are Aromatic Cycles In Cold Clouds?

by Keith CowingSeptember 8, 2023September 8, 2023

We report the detection of large hydrocarbon cycles toward several cold dense clouds. We observed four sources (L1495B, Lupus-1A, L483, and L1527) in the Q band (31-50 GHz) using the […]

L483

Piecing Together Formic Acid Isomerism In Dark Clouds. Detection Of Cis-formic Acid In TMC-1 And Astrochemical Modeling

How Widespread Are Aromatic Cycles In Cold Clouds?

How A Deep-sea Protein Adapts To An Extreme Environment

Fingerprints Inside Our Sun Could Reveal If It Once Swallowed A Planet

Climates Of Gl 514 b

Cosmic Radiation at Flight Altitudes Rises When the Sun Is Less Active

The History Of Enzyme Evolution Embedded In Metabolism