Near Infrared Observations Of TNOs With SINFONI

Details Near Infrared Observations Of TNOs With SINFONI Near Infrared Observations Of TNOs With SINFONI

Oct 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007dps....39.3903a&link_type=abstract

American Astronomical Society, DPS meeting #39, #39.03; Bulletin of the American Astronomical Society, Vol. 39, p.491

Astronomy and Astrophysics

Astronomy

Scientific paper

The trans-Neptunian objects are probably the most primitive objects in the Solar System and their study carries important clues about the history of formation and evolution of our planetary system. From 2001 the Meudon group started an observational campaign at VLT/ESO to observe by spectroscopy these faint and distant objects to investigate their surface composition.
Recently, a new instrument has been installed, the Spectrograph for INtegral Field Observations in the Near Infrared, SINFONI. This instrument allows to obtain cubes of data with spectra of medium resolution of TNOs,
useful to search for subtle absorption features. Here we present data for four objects: the scattered disk object (26375) 1999 DE9, the plutinos (38628) Huya, and (47932) 2000 GN171, and the centaur (83982) Crantor
searching for possible rotational inhomogeneities and/or features on their spectra.
A comparison with previous published observations shows that rotational heterogeneities can be present in at least two of the objects.

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