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Updated: Jan 16, 2026
12:19
Identification of Metal Oxide Nanoparticles in Histological Samples by Enhanced Darkfield Microscopy and Hyperspectral Mapping
Published on: December 8, 2015
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Spectroscopic Supermassive Dark Star candidates.
Cosmin Ilie1, Sayed Shafaat Mahmud1, Jillian Paulin2
1Department of Physics and Astronomy, Colgate University, Hamilton, NY 13346.
Summary
Early stars powered by dark matter (DM), known as Dark Stars (DSs), are analyzed using JWST data. Two candidates, JADES-GS-z11-0 and JADES-GS-z13-0, are spectroscopically consistent with DSs, with two new candidates identified.
Area of Science:
- Astronomy and Astrophysics
- Cosmology
- Early Universe Studies
Background:
- Dark Stars (DSs) are hypothetical early stars powered by dark matter (DM) annihilation or decay.
- Previous research identified three photometric DS candidates (JADES-GS-z11-0, JADES-GS-z12-0, JADES-GS-z13-0) in 2023.
- Understanding DSs is crucial for comprehending the early universe and galaxy formation.
Purpose of the Study:
- To spectroscopically confirm or refute the DS interpretation of previously identified candidates.
- To search for new DS candidates using JWST data.
- To investigate potential environmental influences on DS formation and evolution.
Main Methods:
- Follow-up spectroscopic analysis of photometric DS candidates using Near-Infrared Spectrograph (NIRSpec) on the James Webb Space Telescope (JWST).
- Identification and analysis of spectral features, including He II absorption lines.
- Cross-correlation with other observational data, such as Atacama Large Millimeter/submillimeter Array (ALMA) data.
Main Results:
- JADES-GS-z11-0 and JADES-GS-z13-0 show spectroscopic consistency with a Dark Star interpretation.
- Two new spectroscopic DS candidates, JADES-GS-z14-0 and JADES-GS-z14-1, were identified.
- JADES-GS-z14-0 exhibits a tentative He II absorption line, a potential DS signature, and is the second most distant luminous object observed.
- ALMA data suggests JADES-GS-z14-0 might be in a metal-rich environment, challenging the isolated DS model.
Conclusions:
- Spectroscopic data supports the Dark Star hypothesis for JADES-GS-z11-0 and JADES-GS-z13-0.
- The potential detection of a He II absorption line in JADES-GS-z14-0 is a significant finding.
- The potential embedding of JADES-GS-z14-0 in a metal-rich environment necessitates theoretical revisions of Dark Star formation and evolution models.
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