tldrdailynews.com logo
Tag

Hot Jupiter

All articles tagged with #hot jupiter

JWST uncovers HD 80606 b: a scorching hot Jupiter baked by its star
space2 months ago

JWST uncovers HD 80606 b: a scorching hot Jupiter baked by its star

NASA’s James Webb Space Telescope observed the exoplanet HD 80606 b, a gas giant about 217 light-years away, whose highly elongated 111‑day orbit brings it extremely close to its host star and heats its atmosphere to roughly 1,100°F (600°C). Using JWST’s MIRI instrument for spectroscopy, the team tracked the planet before, during, and after closest approach, identifying chemical fingerprints such as methane and carbon dioxide and confirming how violently extreme hot Jupiters can be. The findings, building on prior Spitzer data, were presented at the American Astronomical Society meeting.

via Space|
#exoplanets#hd-80606-b#hot-jupiter
Webb Tracks Roasting of Exoplanet HD 80606 b
space2 months ago

Webb Tracks Roasting of Exoplanet HD 80606 b

NASA's James Webb Space Telescope captured exoplanet HD 80606 b, a four-Jupiter-mass world on a highly elongated 111-day orbit, heating dramatically as it swings close to its star. Webb's MIRI spectroscopy records a temperature jump of about 1,100°F and detectable chemical changes (e.g., methane, carbon dioxide) across the planet as it moves through periastron and a secondary eclipse, enabling detailed atmospheric studies of hot Jupiters.

via NASA Science (.gov)|
#exoplanets#hot-jupiter#infrared
"Doomed: Experts Warn of Tragic End for Extreme 'Deformed' Jupiter-like Alien World"
astronomy2 years ago

"Doomed: Experts Warn of Tragic End for Extreme 'Deformed' Jupiter-like Alien World"

Scientists have revealed that the Jupiter-like exoplanet WASP-12b, known as a "hot Jupiter," is doomed to be completely devoured by its star in just three million years, much sooner than previously thought. The extreme gravity of the star is already deforming and tearing apart the planet, with its atmosphere being stripped away. This rare and extreme planet, orbiting very close to its giant star, is being slowly cannibalized, and its tragic end has been predicted by researchers.

via The Sun|
#alien-world#astronomy#destruction
"Scientists Discover Massive 350,000-Mile-Long Comet-Like Tail on Distant Exoplanet"
science2 years ago

"Scientists Discover Massive 350,000-Mile-Long Comet-Like Tail on Distant Exoplanet"

Astronomers have discovered that the exoplanet WASP-69b, located 160 light-years away, has a 350,000-mile-long tail of helium gas trailing behind it, resembling a comet's tail. This "Hot Jupiter" planet, slightly larger than Jupiter and very close to its star, is an eccentric addition to the known exoplanets and offers scientists an opportunity to study how planets lose their atmospheres.

via The New York Times|
#astronomy#exoplanet#helium-tail
"Massive 350,000-Mile-Long Comet-Like Tail Discovered on Distant Exoplanet"
science2 years ago

"Massive 350,000-Mile-Long Comet-Like Tail Discovered on Distant Exoplanet"

Astronomers have discovered that the exoplanet WASP-69b, located 160 light-years away, has a 350,000-mile-long tail of helium gas trailing behind it, resembling a comet's tail. This "Hot Jupiter" planet, slightly larger than Jupiter and very close to its star, exhibits an extravagant tail due to its atmosphere heating to extreme temperatures and being accelerated into space by the star's intense radiation. The discovery sheds light on how planets lose their atmospheres and provides insight into the behavior of Hot Jupiters.

via The New York Times|
#astronomy#exoplanet#helium-tail
Red-Giant Stars Host Two 'Hot Jupiters' in Astonishing Astronomical Find
astronomy2 years ago

Red-Giant Stars Host Two 'Hot Jupiters' in Astonishing Astronomical Find

Astronomers using NASA's TESS have discovered two new "hot Jupiter" exoplanets, TOI-4377 b and TOI-4551 b, orbiting red-giant stars. These giant alien worlds have short orbital periods and high surface temperatures, similar to Jupiter. The findings contribute to the understanding of short-period giant planets around red-giant stars, which are relatively rare.

via Phys.org|
#astronomers#astronomy#exoplanets
"Unveiling the Fiery Atmosphere of HD 189733b: A Planet Hotter than the Sun"
astronomy3 years ago

"Unveiling the Fiery Atmosphere of HD 189733b: A Planet Hotter than the Sun"

Scientists have modeled the atmosphere of the hot Jupiter exoplanet HD 189733b and discovered that the unstable absorptions in the hydrogen line Lyα are likely caused by the high activity of the host star, resulting in increased radiation flux in the ultraviolet region and a faster loss of stellar material. The researchers used transit spectroscopy to study the movement and composition of the planet's atmosphere, revealing the presence of different elements. This study provides insights into the physico-chemical properties of the HD 189733b planetary system.

via Phys.org|
#astronomy#atmosphere#exoplanets
"Star's Impact on Exoplanet Creates Spectacular Tail 950 Light Years Away"
space3 years ago

"Star's Impact on Exoplanet Creates Spectacular Tail 950 Light Years Away"

Astronomers have discovered a massive gas tail trailing from the exoplanet HAT-P-32 b, located 950 light years away from Earth. The planet, classified as a "hot Jupiter," is losing its atmosphere due to its close proximity to its parent star. The gas tail, about 18 times the size of Jupiter, is one of the largest planetary structures observed outside our solar system. By studying this phenomenon, researchers hope to gain insights into planetary evolution and solve the mystery of the "hot-Neptunian desert" in the exoplanet catalog. Supercomputer simulations have revealed that HAT-P-32 b is being both trailed and led by its outflowing gas, and it is estimated to take 40 billion years for the planet to completely lose its atmosphere. However, the planet is unlikely to survive the lifespan of its host star, which is expected to engulf it in the future.

via Space.com|
#atmosphere-loss#exoplanet#hot-jupiter
astronomy3 years ago

"Explosive Spiral: Hot Jupiter Planet Discovered 950 Light Years Away"

A study has revealed that the exoplanet HAT-P-32b, located 950 light years away from Earth, is losing its atmospheric helium, resulting in the creation of massive gas trails. This makes it the largest known planetary structure in space. HAT-P-32b is a "hot Jupiter" with a short orbital rotation and a mass of approximately 0.68 Jupiter. Scientists hope to gain insights into the phenomenon of atmospheric escape by studying this planet.

via The Jerusalem Post|
#astronomy#atmospheric-escape#exoplanet
Rare 'Thermometer Molecule' Detected on Exoplanet WASP-31b
science-and-astronomy3 years ago

Rare 'Thermometer Molecule' Detected on Exoplanet WASP-31b

Astronomers have discovered the rare "thermometer molecule" chromium hydride in the atmosphere of the exoplanet WASP-17b, which orbits an F-type star located 1,250 light-years from Earth. Chromium hydride is temperature-sensitive and is abundant in a specific temperature range. This discovery could allow scientists to measure the temperatures of exoplanets in a new way. WASP-17b is an extreme exoplanet located very close to its parent star, causing extreme temperatures and causing its atmosphere to "puff out." The researchers used high-resolution spectroscopy to detect the chromium hydride in the planet's atmosphere and hope to find more metal hydrides in the atmospheres of other exoplanets.

via Space.com|
#chromium-hydride#exoplanets#hot-jupiter
Surviving the Supernova: The Enigma of Halla, the 'Zombie Planet'
astronomy3 years ago

Surviving the Supernova: The Enigma of Halla, the 'Zombie Planet'

Astronomers have discovered a Jupiter-size planet named Halla that miraculously survived the explosive expansion of its host star, Baekdu. Halla, also known as a "hot Jupiter," should have been engulfed and incinerated by the expanding star, but it managed to survive. The researchers propose two possibilities: either Halla was born after Baekdu transformed into a red giant, or Baekdu was once part of a binary system that later merged, preventing either star from expanding enough to consume Halla.

via Livescience.com|
#astronomy#binary-system#halla