The carbon monoxide-rich interstellar comet 2I/Borisov

@article{Bodewits2020TheCM,
  title={The carbon monoxide-rich interstellar comet 2I/Borisov},
  author={Dennis Bodewits and John W. Noonan and Paul D. Feldman and Michele T. Bannister and Davide Farnocchia and Walter M. Harris and J.-Y. Li and Kathleen E. Mandt and Joel Wm. Parker and Zexi Xing},
  journal={Nature Astronomy},
  year={2020},
  pages={1-5}
}
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 distributes volatiles 2 , organic material… 

Figures from this paper

Gaseous atomic nickel in the coma of interstellar comet 2I/Borisov.
TLDR
Spectroscopic observations of atomic nickel vapour in the cold coma of 2I/Borisov at a heliocentric distance of 2.322 astronomical units are reported, in line with the recent identification of this atom-as well as iron-in the cold comae of Solar System comets17.
Compact pebbles and the evolution of volatiles in the interstellar comet 2I/Borisov
The interstellar traveler, 2I/Borisov, is the first clearly active extrasolar comet, ever detected in our Solar system. We obtained high-resolution interferometric observations of 2I/Borisov with the
Gas-phase Modeling of the Cometary Coma of Interstellar Comet 2I/Borisov
  • Sana Ahmed, K. Acharyya
  • Physics
    The Astrophysical Journal
  • 2021
Comet 2I/Borisov is the first interstellar comet observed in the solar system, providing a unique opportunity to understand the physical conditions that prevailed in a distant unknown planetary
Activities and origins of interstellar comet 2I/Borisov
<p><span lang="EN-US">We will present the results of coordinated observations of 2I/Borisov with the Neil Gehrels-<em>Swift</em> observatory (<em>Swift</em>) and Hubble Space Telescope (HST), which
The similarity of the interstellar comet 2I/Borisov to Solar System comets from high-resolution optical spectroscopy
Aims. 2I/Borisov hereafter 2I is the first visibly active interstellar comet observed in the solar system, allowing us for the first time to sample the composition of a building block from another
Spectrosopy of interstellar comet 2I/Borisov with VLT X-Shooter
<p><strong>Abstract</strong></p> <p>During the journey through the solar system, interstellar comet 2I/Borisov has been observed spectroscopically by most of the largest telescopes on Earth, enabling
Activity of the first interstellar comet 2I/Borisov around perihelion: results from Indian observatories
Comet 2I/Borisov is the first true interstellar comet discovered. Here we present results from observational programs at two Indian observatories, 2 m Himalayan Chandra Telescope at the Indian
FUV Observations of the Inner Coma of 46P/Wirtanen
Far-ultraviolet observations of comets yield information about the energetic processes that dissociate the sublimated gases from their primitive surfaces. Understanding which emission processes are
Interstellar Objects Follow the Collapse of Molecular Clouds
Interstellar objects (ISOs), the parent population of 1i/‘Oumuamua and 2i/Borisov, are abundant in the interstellar medium of the Milky Way. This means that the interstellar medium, including
Ice-coated Pebble Drift as a Possible Explanation for Peculiar Cometary CO/H2O Ratios
To date, at least three comets—2I/Borisov, C/2016 R2 (PanSTARRS), and C/2009 P1 (Garradd)—have been observed to have unusually high CO concentrations compared to water. We attempt to explain these
...
1
2
3
4
...

References

SHOWING 1-10 OF 35 REFERENCES
Cometary compositions compared with protoplanetary disk midplane chemical evolution
Context. Comets are planetesimals left over from the formation of planets in the solar system. With a growing number of observed molecular abundances in many comets, and an improved understanding of
Elemental and molecular abundances in comet 67P/Churyumov-Gerasimenko
Comets are considered to be some of the most pristine and unprocessed Solar system objects accessible to in situ exploration. Investigating their molecular and elemental composition takes us on a
The Nucleus of Interstellar Comet 2I/Borisov
We present high resolution imaging observations of interstellar comet 2I/Borisov (formerly C/2019 Q4) obtained using the Hubble Space Telescope. Scattering from the comet is dominated by a coma of
Initial characterization of interstellar comet 2I/Borisov
Interstellar comets penetrating through the Solar System had been anticipated for decades 1 , 2 . The discovery of asteroidal-looking ‘Oumuamua 3 , 4 was thus a huge surprise and a puzzle.
Volatile Species in Comet 67P/Churyumov-Gerasimenko: Investigating the Link from the ISM to the Terrestrial Planets
Comets contain abundant amounts of organic and inorganic species. Many of the volatile molecules in comets have also been observed in the interstellar medium and some of them even with similar
Interstellar comet 2I/Borisov as seen by MUSE: C 2 , NH 2 and red CN detections
We report the clear detection of C 2 and of abundant NH 2 in the first prominently active interstellar comet, 2I/Borisov. We observed 2I on three nights in November 2019 at optical wavelengths
A search for the origin of the interstellar comet 2I/Borisov
The discovery of the second interstellar object 2I/Borisov on 2019 August 30 raises the question of whether it was ejected recently from a nearby stellar system. Here we compute the asymptotic
THE FOURTH POSITIVE SYSTEM OF CARBON MONOXIDE IN THE HUBBLE SPACE TELESCOPE SPECTRA OF COMETS
The rich A1Π - X1Σ+ system of carbon monoxide accounts for most spectral features seen in long-slit HST STIS observations of comets 153P/Ikeya-Zhang, C/2001 Q4 (NEAT), and C/2000 WM1 (LINEAR), as
Inventory of the volatiles on comet 67P/Churyumov-Gerasimenko from Rosetta/ROSINA
The ESA Rosetta spacecraft (S/C) is tracking comet 67P/Churyumov-Gerasimenko in close vicinity. This prolonged en- counter enables studying the evolution of the volatile coma composition. Aims. Our
Pre-discovery Activity of New Interstellar Comet 2I/Borisov beyond 5 au
Comet 2I/Borisov, the first unambiguous interstellar comet ever found, was discovered in 2019 August at ~3 au from the Sun on its inbound leg. No pre-discovery detection beyond 3 au has yet been
...
1
2
3
4
...