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Composite image of CK Vulpeculae, remains of one Double-star collision The molecules in the space, as can be seen in the orange structure with two lobes in the center, is an ALMA image of 27 aluminum monofluoride, but the rare isotropic version of the 39 AIF is in the same region Blue is an optical datum of the Gemini Observatory
A team of ESO astronomers using for the first time ALMA and NOEMA discovered a radioactive molecule in interstellar space, an isotope of aluminum
With the help of the Atacama large millimeter / submillimeter network (ALMA) and the expanded grid system of the north (NOEMA), scientists were able to detect this source of aluminum 26. s isotope was dispersed in space after the collision of two stars, which left behind a remains known as CK Vulpeculae
The source, known as CK Vulpeculae, was observed for the first time in 1670, red "new star". Despite the fact that at first visible to the naked eye, he immediately scrambled and now requires powerful telescopes to see the remaining parts of this fusion, a diminished focal star surrounded by a radiance of glowing matter that went away from it.
After 348 years, astronomers have observed that the remaining parts of this explosive stellar fusion have sparked the reasonable and persuasive mark of a radioactive version of aluminum, known as aluminum-26. It is the first primitive radioactive molecule recognized outside the solar system.
Astronomers have detected the unique spectral signature of molecules composed of 26 aluminum and fluorine (26AlF) in the debris surrounding CK Vulpeculae, about 2000 years from Earth. As these particles rotate and tumble in space, they transmit a single fingerprint of a millimeter wavelength, a process known as the rotational transition. According to astronomers, this observation could help them better understand how CK Vulpeculae are formed
Tomasz Kamiński, the team leader stated, "This first observation of this isotope in a star-shaped object is also important in the broader context of galactic chemical evolution. It also demonstrates that the deep, dense inner layers of a star, where heavy elements and radioactive isotopes are forged, can be flipped and sunk in space by stellar collisions. "
" We also observe the bowels. from a star torn three centuries ago by a collision. "
Parallel to this, the observation revealed that the aluminum-26 will rot firmer and in this procedure, one of the protons in the nucleus decays into neutron. In the middle of this procedure, the energized nucleus discharges a high vitality photon, which we see as a gamma ray.
Previously, gamma ray emission detection has shown that about two solar mbades are present in the body. Aluminum 26 are present in the Milky Way, but the process that created the radioactive atoms was unknown.With these new measurements, astronomers have definitely detected for the first time an unstable radioisotope in a molecule outside our system
Although the group has deduced that the generation of aluminum-26 by objects like CK Vulpeculae is not likely to be the major source of aluminum-26 in the Milky Way. # 26; Aluminum 26 in CK Vu lpeculae is about a quarter of Pluto's mbad, and since these occasions are so rare, it is deeply far-fetched that they are the only manufacturers of the isotope in the Milky Way. 19659003] The research is published in the journal Nature Astronomy.
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