Millimeter and submillimeter observations of the asteroid 4 Vesta

Abstract

view Abstract Citations (35) References (14) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Millimeter and Submillimeter Observations of the Asteroid 4 Vesta Redman, Russell O. ; Feldman, P. A. ; Matthews, H. E. ; Halliday, I. ; Creutzberg, F. Abstract Precise and well-calibrated observations made with the James Clerk Maxwell Telescope are presented of the submillimeter thermal spectrum and light curve of the asteroid 4 Vesta. The disk-averaged Rayleigh-Jeans temperature is as low or lower at submillimeter wavelengths as it is at centimeter wavelengths. Although the interpretation of the spectrum is ambiguous, it seems to indicate the presence of a dusty, porous regolith. At 1 mm wavelength the rotational light curve of Vesta appears double peaked over the 5.342 hr rotation period, unlike the optical lightcurve which is single peaked. This light curve is apparently dominated by the triaxial shape of Vesta, and is not significantly distorted by the optical albedo spots. Publication: The Astronomical Journal Pub Date: July 1992 DOI: 10.1086/116248 Bibcode: 1992AJ....104..405R Keywords: Astronomical Spectroscopy; Light Curve; Submillimeter Waves; Vesta Asteroid; Albedo; Infrared Astronomy Satellite; Millimeter Waves; Radio Astronomy; Signal To Noise Ratios; Lunar and Planetary Exploration; MINOR PLANETS; RADIATION MECHANISMS : THERMAL; RADIO CONTINUUM: SOLAR SYSTEM full text sources ADS |