Updated

Updated · spacedaily.com · Jul 23

Webb Uncovers 3rd Beta Pictoris Planet 63 Light-Years Away as VLT Confirms 11 Years of Data

Updated

Updated · spacedaily.com · Jul 23

Webb Uncovers 3rd Beta Pictoris Planet 63 Light-Years Away as VLT Confirms 11 Years of Data

Q: What makes Beta Pictoris d one of the faintest, lightest exoplanets imaged from the ground, and what might it be doing to its star’s dusty disk?

Beta Pictoris d stands out because it is both unusually light and extremely dim for a directly imaged world. Ground-based measurements put it at about 2.4 times Jupiter’s mass, making it one of the lowest-mass exoplanets ever imaged from Earth. It is also relatively cool, near 600 kelvin, and about 100 times fainter than Beta Pictoris b. That low mass, low temperature and weak glow make it one of the faintest exoplanets ever directly imaged from the ground, and a difficult target against the glare of its young host star and bright debris disk. Its faintness is exactly why the detection is considered a technical milestone. The planet was hard to separate from scattered starlight and dust, and researchers had to combine Webb spectroscopy, which identified methane, carbon monoxide and water vapor in its atmosphere, with later imaging from the Very Large Telescope and archival data stretching back 11 years. As for the dusty disk, Beta Pictoris d appears to sit near the disk’s inner edge, at roughly 26 to beyond 30 astronomical units from the star. That location, together with its mass, suggests it may be gravitationally sculpting or carving that inner boundary, helping shape the disk’s sharp structure. In other words, the planet may be one of the forces organizing the dusty material left over from the system’s formation.

3 articles · Updated · spacedaily.com · Jul 23

Beta Pictoris d emerged unexpectedly in Webb data while astronomers were analyzing Beta Pictoris b, adding a third giant planet to the young system 63 light-years from Earth.
Webb identified methane, carbon monoxide and water-vapor signatures in the source, then confirmed the signal in a second epoch and with MIRI—making it the first planet found primarily through moderate-resolution spectral template matching.
A separate VLT team independently detected the same world, recovered it in archival VLT and Webb images spanning 11 years, and showed it is bound to the star rather than a background object.
Estimates put the cold planet at roughly 2 to 4 Jupiter masses and about 26 to 30 astronomical units from the star, inside the inner edge of Beta Pictoris's bright debris disk.
The find makes Beta Pictoris only the second system after HR 8799 with more than two directly imaged planets and suggests spectroscopy archives may hide other planets masked by dusty environments.

Sources

spacedaily.com1d ago

NASA's Webb Telescope Accidentally Discovers New Giant Planet Beta Pictoris d

en.clickpetroleoegas.com.br15h ago

NASA's James Webb Telescope discovers giant planet hidden in one of the most famous astronomical systems - CPG Click Oil and Gas

NASA1d ago

Gemini Planet Imager's First Light Image of Beta Pictoris b - NASA

6 Sources

What makes Beta Pictoris d one of the faintest, lightest exoplanets imaged from the ground, and what might it be doing to its star’s dusty disk?

Why does Beta Pictoris joining HR 8799 as a rare three-planet imaged system matter for understanding how giant planets and debris disks evolve?

How did astronomers find Beta Pictoris d by its molecular fingerprint instead of just its light—and could more hidden planets already be in old data?

Beta Pictoris d Revealed: How Spectroscopy Unlocked the Faintest Directly Imaged Exoplanet

Overview

The discovery of Beta Pictoris d marks a breakthrough in exoplanet science, as two independent teams uncovered this faint, cool planet hidden in telescope images for over a decade. Its small mass and wide orbit made it 100 times fainter than its sibling, Beta Pictoris b, challenging traditional direct imaging methods. By combining archival searches and advanced spectroscopic fingerprinting, astronomers overcame the glare and dust of the debris disk, revealing how Beta Pictoris d sculpts the system’s sharp inner edge. This success shows that many more hidden worlds may be found as new observatories like the Extremely Large Telescope come online.

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