ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • LUNAR AND PLANETARY EXPLORATION  (11)
Collection
Keywords
Years
  • 1
    facet.materialart.
    Unknown
    Volcanic eruptions on Io: Heat flow, resurfacing, and lava composition (1995)
    In:  Other Sources
    Details
    Publication Date: 2011-08-24
    Description: We model an infrared outburst on Io as being due to a large, erupting lava flow which increased its area at a rate of 1.5 x 10(exp 5)/sq m and cooled from 1225 to 555 K over the 2.583-hr period of observation. The inferred effusion rate of 3 x 10(exp 5) cu m/sec for this eruption is very high, but is not unprece- dented on the Earth and is similar to the high eruption rates suggested for early lunar volcanism. Eruptions occur approxi- mately 6% of the time on Io. These eruptions provide ample resurfacing to explain Io's lack of impact craters. We suggest that the large total radiometric heat flow, 10(exp 14) W, and the size and temperature distribution of the thermal anomalies (McEwen et al. 1992; Veeder et al. 1994) can be accounted for by a series of silicate lava flows in various stages of cooling. We propose that the whole suite of Io's currently observed thermal anomalies was produced by multiple, high-eruptive-rate silicate flows within the past century.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Icarus (ISSN 0019-1035); 113; 1; p. 220-225
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 2
    facet.materialart.
    Unknown
    Radiometry of Deimos (1987)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: Ground-based infrared photometry of Deimos at 4.8, 10, and 20 microns is reported. The observed fluxes are significantly brighter than predicted by the 'standard' thermal model. Recent recalibrations that modify the model beam pattern of the infrared emission are marginally consistent with the observations at 10 and 20, but not at 4.8 microns.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Astronomical Journal (ISSN 0004-6256); 94; 1361-136
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 3
    facet.materialart.
    Unknown
    IRAS constraints on the sizes of Pluto and Charon (1987)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: Thermal emission models indicate that Charon contributes a significant amount of the infrared radiation detected by IRAS during the observation of mutual eclipse events. The IRAS observations also show that the most probable diameters for Pluto and Charon are 2200 and 1300 (+ or - 150) km. These results are consistent with there being some atmosphere on Pluto.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Nature (ISSN 0028-0836); 327; 127-129
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 4
    facet.materialart.
    Unknown
    Io - Evidence for silicate volcanism in 1986 (1988)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: Infrared observations of Io during the 1986 apparition of Jupiter indicate that a large eruptive event occurred on the leading side of Io on August 7, 1986, UT. Measurements made at 4.8, 8.7, and 20 micrometers suggest that the source of the event was about 15 kilometers in radius with a model temperature of about 900 K. These measurements indicate that high-temperature volcanic activity on the leading side of Io may be more frequent than previously thought. The inferred temperature is significantly above the boiling point of sulfur in a vacuum (715 K) and thus constitutes strong evidence for active silicate volcanism on the surface of Io.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Science (ISSN 0036-8075); 242; 1280-128
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 5
    facet.materialart.
    Unknown
    Classification of IRAS asteroids (1989)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The results of analyses of IRAS-derived asteroid albedos are presented, and their application to asteroid classification is discussed. It is noted that, while most IRAS-derived albedos are reliable, a substantial fraction of albedos lack needed corrections (e.g., for flux overestimation), and a few may be erroneous. The three-parameter taxonomic system introduced by Tedesco et al. (1989) uses only albedos based on well-observed IRAS asteroids; in this system, eleven taxonomic classes are defined on the basis of asteroid spectrum and its albedo.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Asteroids II; Mar 08, 1988 - Mar 11, 1988; Tucson, AZ; United States
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 6
    facet.materialart.
    Unknown
    A three-parameter asteroid taxonomy (1989)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: Broadband U, V, and x photometry together with IRAS asteroid albedos have been used to construct an asteroid classification system. The system is based on three parameters (U-V and v-x color indices and visual geometric albedo), and it is able to place 96 percent of the present sample of 357 asteroids into 11 taxonomic classes. It is noted that all but one of these classes are analogous to those previously found using other classification schemes. The algorithm is shown to account for the observational uncertainties in each of the classification parameters.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Astronomical Journal (ISSN 0004-6256); 97; 580-606
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 7
    facet.materialart.
    Unknown
    A refined 'standard' thermal model for asteroids based on observations of 1 Ceres and 2 Pallas (1986)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: An analysis of ground-based thermal IR observations of 1 Ceres and 2 Pallas in light of their recently determined occultation diameters and small amplitude light curves has yielded a new value for the IR beaming parameter employed in the standard asteroid thermal emission model which is significantly lower than the previous one. When applied to the reduction of thermal IR observations of other asteroids, this new value is expected to yield model diameters closer to actual values. The present formulation incorporates the IAU magnitude convention for asteroids that employs zero-phase magnitudes, including the opposition effect.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Icarus (ISSN 0019-1035); 68; 239-251
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 8
    facet.materialart.
    Unknown
    Infrared lightcurves of asteroids 532 Herculina and 45 Eugenia - Proof of the absence of significant albedo markings (1988)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: Time-resolved thermal maxima and minima from near- and mid-IR photometry for the asteroids 532 Herculina and 45 Eugenia are noted to occur at nearly the same time as the maxima and minima in reflected light, while model lightcurves for Herculina, based on Taylor et al.'s (1987) albedo distribution, had predicted a 90-deg out-of-phase relationship. It is presently found through a comparison of model and observed lightcurves that the light variations of both Herculina and Eugenia are primarily the result of variations in shape rather than in albedo.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Icarus (ISSN 0019-1035); 75; 518-526
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 9
    facet.materialart.
    Unknown
    Spectral geometric albedos of the Galilean satellites from 0.24 to 0.34 micrometers - Observations with the International Ultraviolet Explorer (1987)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: An 8-year IUE satellite spectrophotometric observation campaign's results for the Galilean satellites of Jupiter indicate low albedos for all four, consistent with the distribution of sulfurous materials escaping from the surface of Io to the surfaces of the three other bodies by means of magnetospheric processes. A previously reported UV spectral asymmetry between Europa's leading and trailing hemispheres is confirmed. The greater trailing than leading side opposition surge observed in Europa implies that the trailing side is the less compact of the two. Ganymede exhibits UV spectral asymmetry also, but only at wavelengths greater than 0.28 microns.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Icarus (ISSN 0019-1035); 72; 358-380
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 10
    facet.materialart.
    Unknown
    Physical properties of Aten, Apollo and Amor asteroids (1989)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Data available on the physical properties of a group of planet-crossing asteroids, the Aten, Apollo, and Amor objects (AAAO) (include data on the taxonomy, mineralogical surface composition, diameter, rotation rate, shape, and surface texture) are presented together with the type of observations used for obtaining these data. These data show that the population of the AAAO is diverse in all of their physical characteristics. This diversity implies that the AAAO come from multiple sources and had different evolutionary histories.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Asteroids II; Mar 08, 1988 - Mar 11, 1988; Tucson, AZ; United States
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...