NGC 346 Archives

Optical depth spectra of the YSOs in our sample, shifted vertically for clarity. For illustration purposes, the red lines correspond to a linear combination of four ice mixtures selected from LIDA (3000 monolayers of pure H2O at a temperature of 15 K, H2O:CO2 in the ratio 10:1 at 10 K, CO:CO2 in the ratio 2:1 at 15 K, and pure OCS at 17 K) and provide a reasonable fit to the observations. The corresponding column densities are listed in Table 4. The legend at the top of each panel indicates the ice features discussed in the text and the corresponding wavelengths, to guide the eye. -- astro-ph.GA

Astrochemistry, Astronomy & Telescopes, Biosignatures & Paleobiology, Icy Worlds, Imaging & Spectroscopy, Interstellar, Status Report

First Detection Of Ices In Intermediate-mass Young Stellar Objects Beyond The Milky Way

by Keith CowingSeptember 27, 2025September 27, 2025

Using NIRSpec on JWST, we studied a sample of 15 intermediate-mass (1.8-4.1 Msun) young stellar objects (YSOs) previously identified with MIRI photometry in the low-metallicity NGC 346 star-forming cluster in […]

This image features NGC 346, one of the most dynamic star-forming regions in nearby galaxies, as seen by the NASA/ESA/CSA James Webb Space Telescope. NCG 346 is located in the Small Magellanic Cloud (SMC), a dwarf galaxy close to our Milky Way. Larger image

Astrogeology, Astronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Press Release

Planet-forming Discs Lived Longer In The Early Universe

by Keith CowingDecember 16, 2024December 16, 2024

In 2003, Hubble spotted a massive planet around a very old star, almost as old as the Universe. This implied that some planet formation happened when our Universe was very […]