Diffuse Interstellar Bands Archives

Local values of the ratio between the DIB carrier volume density as measured by the EW local spatial gradient (in units of Å pc−1 ) and the extinction volume density (in units of mag pc−1 ). The two DIB-to-dust ratio maps are for the same planes as in Figs. 3 and 4. Iso-contours of extinction density for two low values (10−5 (black) and 5 10−4 (violet) mag pc−1 ) are superimposed. -- astro-ph.GA

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

Volume Density Maps Of The 862nm DIB Carrier And Interstellar Dust: A Hint For The Role Of Carbon-rich Ejecta From AGB stars?

by Keith CowingJune 4, 2024June 4, 2024

The carbonaceous macromolecules imprinting in astronomical spectra the numerous absorptions called Diffuse Interstellar Bands (DIBs) are omnipresent in the Galaxy and beyond and represent a considerable reservoir of organic matter.

Image of creating super giant carbon and/or PAH molecules after the star explosion. -- astro-ph.GA

Astrochemistry, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Interstellar, Status Report

Astronomical Diffuse Interstellar Bands Analyzed by Hydrocarbon Pentagon-Hexagon Combined PAH Molecules

by Keith CowingOctober 11, 2023October 11, 2023

This study theoretically predicted the specific Polycyclic Aromatic Hydrocarbon (PAH) molecules to satisfy both astronomically observed Diffuse Interstellar Bands (DIB) and Infrared Bands (IR).

Diffuse Interstellar Bands

Volume Density Maps Of The 862nm DIB Carrier And Interstellar Dust: A Hint For The Role Of Carbon-rich Ejecta From AGB stars?

Astronomical Diffuse Interstellar Bands Analyzed by Hydrocarbon Pentagon-Hexagon Combined PAH Molecules

NASA Establishes Mars Forward Operational Risk and Contamination Evaluation (M-FORCE) Tiger Team to Shape Mars Planetary Protection Protocols

Opportunity to Contribute to NASA DARES Community White Paper on Phototrophic Biosignatures

The Search For Life Elsewhere: Avoiding Hype and Fostering Public Understanding

Panchromatic Spectra of Nearby Low-mass and Sun-like Stars with Directly Imageable Habitable Zones

Alfred: A Flexible, User-Friendly Python Package for Exoplanet Confirmation