Detection of CN Gas in Interstellar Object 2I/Borisov

@article{Fitzsimmons2019DetectionOC,
  title={Detection of CN Gas in Interstellar Object 2I/Borisov},
  author={Alan Fitzsimmons and Olivier R. Hainaut and Karen J. Meech and Emmanuel Jehin and Youssef Moulane and Cyrielle Opitom and Bin Yang and Jacqueline V. Keane and Jan T. Kleyna and Marco Micheli and Colin Snodgrass},
  journal={The Astrophysical Journal},
  year={2019}
}
The detection of Interstellar Objects passing through the Solar System offers the promise of constraining the physical and chemical processes involved in planetary formation in other extrasolar systems. While the effect of outgassing by 1I/2017 U1 ('Oumuamua) was dynamically observed, no direct detection of the ejected material was made. The discovery of the active interstellar comet 2I/Borisov means spectroscopic investigations of the sublimated ices is possible for this object. We report the… 

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References

SHOWING 1-10 OF 50 REFERENCES
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.
Spitzer Observations of Interstellar Object 1I/‘Oumuamua
1I/'Oumuamua is the first confirmed interstellar body in our solar system. Here we report on observations of 'Oumuamua made with the Spitzer Space Telescope on 2017 November 21–22 (UT). We integrated
Ground-based monitoring of comet 67P/Churyumov-Gerasimenko gas activity throughout the Rosetta mission
Simultaneously to the ESA Rosetta mission, a world-wide ground-based campaign provided measurements of the large scale activity of comet 67P/Churyumov-Gerasimenko through measurement of optically
Dust measurements in the coma of comet 67P/Churyumov-Gerasimenko inbound to the Sun
TLDR
The largest orbiting clumps are meter-sized, confirming the dust/gas ratio of 3 inferred at perihelion from models of dust comae and trails.
An Observational Upper Limit on the Interstellar Number Density of Asteroids and Comets
We derived 90% confidence limits (CL) on the interstellar number density ($\rho_{IS}^{CL}$) of interstellar objects (ISO; comets and asteroids) as a function of the slope of their size-frequency
A brief visit from a red and extremely elongated interstellar asteroid
TLDR
Observations and analysis of the object 1I/2017 U1 (‘Oumuamua) that demonstrate its extrasolar trajectory, and that enable comparisons to be made between material from another planetary system and from the authors' own, reveal it to be asteroidal with no hint of cometary activity despite an approach within 0.25 astronomical units of the Sun.
THE EXTREMELY ANOMALOUS MOLECULAR ABUNDANCES OF COMET 96P/MACHHOLZ 1 FROM NARROWBAND PHOTOMETRY
Narrowband-filter photometry of Comet 96P/Machholz 1 was obtained at Lowell Observatory during the comet's 2007 apparition. Production rates of OH, CN, C2, C3, and NH were derived from these data
Tumbling motion of 1I/‘Oumuamua and its implications for the body’s distant past
Models of the Solar System’s evolution show that almost all the primitive material leftover from the formation of the planets was ejected to the interstellar space as a result of dynamical
Early photometry of comet p/Halley: Development of the Coma
Abstract Broadband charge-coupled device photometry of Comet p/Halley at heliocentric distances R = 5.9 AU (1984 October) and R = 5.1 AU (1985 January) is presented. The mean brightness at R = 5.1 AU
Observational Constraints on the Lifetime of Cometary H2O
Abstract We used a carefully selected set of observations of five comets along with a vectorial model and the Haser model to explore the lifetimes against photodissociation of H 2 O and OH in
...
1
2
3
4
5
...