The carbon monoxide-rich interstellar comet 2I/Borisov
| Autor: | Jian-Yang Li, Davide Farnocchia, Kathleen Mandt, J. Wm. Parker, Zexi Xing, Michele T. Bannister, Paul D. Feldman, John Noonan, Dennis Bodewits, Walter M. Harris |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Earth and Planetary Astrophysics (astro-ph.EP)
Physics Solar System 010504 meteorology & atmospheric sciences Comet FOS: Physical sciences Astronomy and Astrophysics Protoplanetary disk 01 natural sciences Astrobiology chemistry.chemical_compound Stars chemistry Planet Interstellar comet Physics::Space Physics 0103 physical sciences Astrophysics::Solar and Stellar Astrophysics Astrophysics::Earth and Planetary Astrophysics 010303 astronomy & astrophysics Chemical composition Astrophysics::Galaxy Astrophysics Astrophysics - Earth and Planetary Astrophysics 0105 earth and related environmental sciences Carbon monoxide |
| Zdroj: | Nature Astronomy. 4:867-871 |
| ISSN: | 2397-3366 |
| DOI: | 10.1038/s41550-020-1095-2 |
| Popis: | Interstellar comets offer direct samples of volatiles from distant protoplanetary disks. 2I/Borisov is the first notably active interstellar comet discovered in our solar system[1]. Comets are condensed samples of the gas, ice, and dust that were in a star's protoplanetary disk during the formation of its planets and inform our understanding on how chemical compositions and abundances vary with distance from the central star. Their orbital migration moves volatiles[2], organic material, and prebiotic chemicals in their host system[3]. In our solar system, hundreds of comets have been observed remotely, and a few have been studied up close by space missions[4]. However, knowledge of extrasolar comets has been limited to what could be gleaned from distant, unresolved observations of cometary regions around other stars, with only one detection of carbon monoxide[5]. Here we report that the coma of 2I/Borisov contains significantly more CO than H2O gas, with abundances of at least 173%, more than three times higher than previously measured for any comet in the inner ( |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink