L1527 Archives

Spectrally integrated line flux maps for 3I/ATLAS observed using JWST NIRSpec: (a) H2O at 2.7 µm, (b) CO2 at 4.3 µm, (c) CO at 4.7 µm. Image axes are aligned with the equatorial (RA/decl.) grid. Molecular emission has been isolated by subtracting a polynomial fit to the adjacent continuum. Spatial coordinates are with respect to the brightest pixel in each map (the pseudo-nucleus). Inset panels (upper right) show the continuum-subtracted spectra within the image integration wavelength range, spatially integrated within a 3′′ diameter circular aperture centered on the pseudo-nucleus (corresponding to 3,900 km at the 1.8 au distance of the comet from the telescope). Lower left corner shows the direction of the (sky-projected) comet-Sun (S) and nucleus velocity (v) vectors. -- astro-ph.EP

Astrochemistry, Astrogeology, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Comets and Asteroids, Icy Worlds, Imaging & Spectroscopy, Interstellar, Status Report

Isotopic Evidence For A Cold And Distant Origin Of The Interstellar Object 3I/ATLAS

by Keith CowingMarch 17, 2026March 17, 2026

Interstellar objects provide the only directly observable samples of icy planetesimals formed around other stars, and can therefore provide insight into the diversity of physical and chemical conditions occurring during […]

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 […]

L1527

Isotopic Evidence For A Cold And Distant Origin Of The Interstellar Object 3I/ATLAS

How Widespread Are Aromatic Cycles In Cold Clouds?

Cracks In A Martian Crater’s Ice

Stellar Tidal Systematics In Apsidal-motion Searches For Circumbinary Planets: CH Ind And SW CMa

Chondrule Formation In The Outer Disk From The Primary Three-dimensional Chemical Composition Of CM Chondrules

Habitable Worlds Observatory’s Concept and Technology Maturation: Initial Feasibility and Trade Space Exploration

First Look at a Time-Series Observation with New NIRISS SOSS Multistripe Subarrays