Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...282..634f&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 282, no. 2, p. 634-642
Astronomy and Astrophysics
Astrophysics
59
Asteroids, Infrared Spectra, Ultraviolet Spectra, Visible Spectrum, Absorption Spectra, Albedo, Astronomical Photometry, Astronomical Spectroscopy, Charge Coupled Devices, Comets, Spectral Reflectance, Asteroids, D Asteroids, Spectroscopy, Ccd Methods, Photometry, Size, Comparison, Absorption, Composition, Reflectance, Optical Properties, Albedo, Spectra, Earth-Based Observations, Catalog, Morphology, Color, Comet Nuclei, Color, Surface, Impact Effects
Scientific paper
We present CCD spectra of 19 asteroids previously classified as D-type covering the wavelength range 3500 less than or = lambda less than or = 9600A. A comparison with previously published photometric data shows excellent agreement. No small-scale absorption features are seen, but two asteroids (102 Miriam and 914 Palisana) exhibit large-scale absorption (Delta lambda approximately 2000A) characteristic of phyllosilicates and are confirmed as belonging to the C or P groups. A heliocentric color gradient recently reported is presumed to be caused by the presence of silicates on asteroids lying within the main-belt, but it is unknown whether this material is inherent to the asteroid or has been deposited there by impacts. We confirm the exisitence of a reflectance slope-diameter correlation for D-type asteroids previously suspected from studies of Trojan asteroids, with smaller asteroids tending to be redder in coloration. The majority of D-type asteroids observed have a reflectance slope S' = 9.1% 103 A and albedo pv = 0.04, similar to that measured to comets P/Halley and P/Neujmin 1, but rather different to comets such as P/Tempel 2 and P/Arend-Rigaux.
Dahlgren Mats
Fitzsimmons Alan
Lagerkvist Claes-Ingvar
Magnusson Per
Williams Iwan P.
No associations
LandOfFree
A spectroscopic survey of D-type asteroids 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 A spectroscopic survey of D-type asteroids, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A spectroscopic survey of D-type asteroids will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1013095