Results 121 to 130 of about 121,017 (322)

A Comparative Study of Infrared Asteroid Surveys: IRAS, AKARI, and WISE

, 2014
We present a comparative study of three infrared asteroid surveys based on the size and albedo data from the Infrared Astronomical Satellite (IRAS), the Japanese infrared satellite AKARI, and the Wide-field Infrared Survey Explorer (WISE).
Hasegawa, Sunao, Ishiguro, Masateru, Mueller, Thomas G., Ootsubo, Takafumi, Usui, Fumihiko   +4 more
core   +1 more source

AGONISM IN ASTEROIDS

The Biological Bulletin, 1975
1. Intraspecific agonistic behavior, called bouts, which involves ray interactions between individual sea stars, is reported in species from all three living orders of asteroids and described for Patiria miniata and Pycnopodia helianthoides. This behavior indicates a certain sensitivity to conspecific contact on the aboral surface, in which each ...
openaire   +3 more sources

Expected spectral characteristics of (101955) Bennu and (162173) Ryugu, targets of the OSIRIS-REx and Hayabusa2 missions

, 2018
NASA's OSIRIS-REx and JAXA's Hayabusa2 sample-return missions are currently on their way to encounter primitive near-Earth asteroids (101955) Bennu and (162173) Ryugu, respectively.
Alí-Lagoa, V., Campins, H., de León, J., De Prá, M., DellaGiustina, D. N., Lauretta, D. S., Licandro, J., Lorenzi, V., Morate, D., Pinilla-Alonso, N., Popescu, M., Rizos, J. L.   +11 more
core   +1 more source

Microtextures and structures in metal–sulfide grains in NWA 869 meteorite and their relation to thermal history of L‐chondrite parent body

Meteoritics &Planetary Science, Volume 60, Issue 3, Page 616-631, March 2025.
Abstract Results of microanalysis study of NWA 869 meteorite, an ordinary chondrite, where silicates, Fe‐Ni alloys, and troilite are major constituents, are reported. The presented study of microtextures in metallic and sulfide grains provides information on processes occurring from the asteroid's accretion, through the impacts until cooling.
Paulina Skirak, Gabriela Opiła, Adam Piestrzyński, Gabriela Kozub‐Budzyń, Czesław Kapusta   +4 more
wiley   +1 more source

Candidate Main-belt Asteroids for Surface Heterogeneity

The Astronomical Journal
Large terrestrial bodies in our solar system like the Earth, Mars, Mercury, and the Moon exhibit geologically complex surfaces with compositional heterogeneity.
Sunao Hasegawa, Michaël Marsset, Francesca E. DeMeo, Josef Hanuš, Richard P. Binzel, Schelte J. Bus, Brian Burt, David Polishook, Cristina A. Thomas, Jooyeon Geem, Masateru Ishiguro, Daisuke Kuroda, Pierre Vernazza   +12 more
doaj   +1 more source

Iron XANES measurements of carbonates and phyllosilicates in CM chondrites: A record of redox conditions during aqueous alteration

Meteoritics &Planetary Science, EarlyView.
Abstract Multiple generations of calcite and dolomite precipitated in CM chondrites during ice melting events that led to episodes of liquid water. Models and laboratory analysis have suggested a long‐term transition from oxidizing to reducing conditions during aqueous alteration on the CM parent body.
Elizabeth Bailey, Myriam Telus, Phoebe J. Lam, Samuel M. Webb   +3 more
wiley   +1 more source

Northwest Africa 13489: A Strongly Metamorphosed Ungrouped Carbonaceous Chondrite

Meteoritics &Planetary Science, EarlyView.
Abstract NWA 13489 is a meteorite that has been classified as a brachinite. Brachinites are olivine‐rich primitive achondrites representing residual products after a variable degree of silicate melt extraction on a barely differentiated, noncarbonaceous asteroid.
T. Cuppone, C. Carli, M. Casalini, A. Stephant, C. R. Greenwood, G. Pratesi   +5 more
wiley   +1 more source

Unusual Space Weathering on a CE-5 Metal Grain Indicates Deceptive Surface Signatures of M-type Asteroids

The Astrophysical Journal Letters
M-type asteroids are historically thought to be exposed metallic cores of differentiated planets with a composition dominated by pure iron and nickel. However, recent spectral and radar observations reveal an insufficient number of M-type asteroids in ...
Tian Zhang, Hong Tang, Xiongyao Li, Yuanyun Wen, Bing Mo, Wen Yu, Chuanjiao Zhou, Jianzhong Liu   +7 more
doaj   +1 more source

Asuka 12236 more primitive than Paris: Clues given by their Infrared and Raman micro‐spectroscopy signatures

Meteoritics &Planetary Science, EarlyView.
Abstract Carbonaceous chondrites are meteorites originating from undifferentiated objects of the Solar System, which may retain signatures of primitive matter. Here, we present a comparative study between two CM chondrites Asuka 12236 and Paris, both considered among the most primitive in the carbonaceous chondrite meteorite collection.
Zahia Djouadi, Vassilissa Vinogradoff, Zelia Dionnet, Coline Serra, Douchka Dimitrijevic, Alexandra Malnuit, Cateline Lantz, Philippe Claeys, Steven Goderis, Louis Le Sergeant d'Hendecourt   +9 more
wiley   +1 more source

Measurements of positions of asteroids [PDF]

Astronomische Nachrichten, 1913
n ...
openaire   +6 more sources