The Cliff (astronomical object)
NIRSpec/PRISM spectrum of The Cliff. The orange points show NIRCam and MIRI photometry. | |
| Object type | Little red dot |
|---|---|
Observation data (Epoch J2000) | |
| Constellation | Cetus |
| 02h 17m 38.58s | |
| Declination | −05° 07′ 46.79″ |
| Redshift | 3.548 |
The Cliff (RUBIES-UDS-154183) is a compact extragalactic object observed as a little red dot with an exceptional (and cliff-like) Balmer jump. It was discovered as part of the James Webb Space Telescope's Red Unknowns: Bright Infrared Extragalactic Survey (RUBIES) in 2024 in the Ultra Deep Survey (UDS). Detailed spectrographic study suggests that it may be a black hole star.