Near infra-red spectroscopy of the asteroid 21 Lutetia. I. New results of long-term campaign

Details Near infra-red spectroscopy of the asteroid 21 Lutetia. I. New results of long-term campaign Near infra-red spectroscopy of the asteroid 21 Lutetia. I. New results of long-term campaign

Aug 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006a%26a...454..677b&link_type=abstract

Astronomy and Astrophysics, Volume 454, Issue 2, August I 2006, pp.677-681

Astronomy and Astrophysics

Astrophysics

20

Minor Planets, Asteroids, Techniques: Spectroscopic, Methods: Observational

Scientific paper

Aims.Investigation of the physical nature of the asteroid 21 Lutetia, target of Rosetta mission, is required for the completion of its ground-based science and in the frame of its future fly-by. Monitoring this object is essential in preparing the future encounter with the spacecraft. Methods: .The asteroid was observed with SpeX/IRTF in the spectral region 0.9-4.0 μm, in remote observing mode from Meudon, in March 2003 and August 2004. Results: .The new spectrum in the range 0.9-2.5 μm confirms the previous results (Birlan et al. 2004), for a neutral trend with a large shallow band around 1 μm. The spectral region around 3 μm is usually considered as a tracer of aqueous alteration of the surface. The 3 μm band in Lutetias' spectrum is shallower than those of hydrated asteroids, and the 2.9 vs. 3.2 ratio reveals a value close to the CV-CO meteorites. The band around 3.1 μm, if it exists in the spectrum of 21 Lutetia, is different from the one present in the spectrum of 1 Ceres, and is lower than 0.5%.

Affiliated with

Also associated with

No associations

Rating

Near infra-red spectroscopy of the asteroid 21 Lutetia. I. New results of long-term campaign does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Near infra-red spectroscopy of the asteroid 21 Lutetia. I. New results of long-term campaign, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Near infra-red spectroscopy of the asteroid 21 Lutetia. I. New results of long-term campaign will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1130530