Astronomy / Astrophysics

Image that celebrates the discovery of the exoplanet BEBOP-1 c (Image courtesy Amanda Smith / University of Birmingham)

0

An article published in the journal “Nature Astronomy” reports the discovery of a second circumbinary planet that orbits the two stars that form the BEBOP-1 system. A team of researchers used the HARPS and ESPRESSO spectrographs to find for the first time a circumbinary planet using the radial velocity method. This exoplanet, cataloged as BEBOP-1 c, joins TOI-1338 b, discovered in 2020 thanks to NASA’s TESS space telescope. Estimates indicate that BEBOP-1 c is a gas giant with a mass around 65 times the Earth’s and a year lasting about 215 Earth days.

A part of the galaxy NGC 5068 as seen by the James Webb Space Telescope (Image ESA/Webb, NASA & CSA, J. Lee and the PHANGS-JWST Team)

0

An image captured by the James Webb Space Telescope shows the core and part of a spiral arm of the galaxy NGC 5068. Two instruments, MIRI and NIRCam, were used to examine this barred spiral galaxy, and the various infrared filters allowed to detect an enormous amount of detail among dusty structures and star-forming areas where there are newborn stars still surrounded by shells of gas and dust.

About 20 million light-years from Earth, the galaxy NGC 5068 belongs to the most common class in the universe, spiral galaxies. The presence of a star formation extending from the core in a shape resembling a bar places it in the subclass of the barred spiral galaxies, which probably make up about two-thirds of their class.

An artist's impression of the exoplanet WASP-18b and the spectrum of thermal emissions detected by the James Webb Space Telescope's NIRISS instrument at wavelengths between 0.85 and 2.8 microns

0

An article published in the journal “Nature” reports the results of an examination of the exoplanet WASP-18b. A team of researchers used the James Webb Space Telescope to map the temperatures on the surface of this ultra-hot Jupiter very close to its star. The temperature variations are around 1,000° Kelvin between the hottest area always facing its star and the border area between day and night. Webb’s Near-Infrared Imager and Slitless Spectrograph (NIRISS) also found traces of water vapor that other instruments had missed.

The infrared variations seen by a ground-based telescope in Jupiter's North Equatorial Belt between May 2001 and December 2011.

0

An article published in the journal “Nature Astronomy” reports a solution to the mystery of the change in color of some belts of the planet Jupiter’s atmosphere. A team of researchers used data collected by NASA’s Juno space probe to link those changes to the planet’s magnetic field. Scientists already knew the connection with variations in the infrared band, which means the propagation of electromagnetic field energy, about 50 kilometers below Jupiter’s surface. This new study brings evidence that the variations may in turn be caused by waves produced by the planetary magnetic field at depth.

The Lupus 3 molecular cloud

0

An image captured by the Dark Energy Camera (DECam) at the Cerro Tololo Observatory in Chile shows the star-forming interstellar cloud cataloged as Lupus 3. Full of activity, it contains protostars that are literally breaking out of their cocoon of gas and dust such as HR 5999 and HR 6000, in the center of the image. The light of those very young stars illuminates the reflection nebula cataloged as Bernes 149. This area is in the cosmic neighborhood, so it’s observed all the time, sometimes obtaining breathtaking images of newborn stars and protostars.