M 型小行星的对冲效应

IF 1.8 4区物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS

Planetary and Space Science Pub Date : 2025-03-22 DOI:10.1016/j.pss.2025.106103

I.G. Slyusarev , V.G. Shevchenko , I.N. Belskaya , Yu N. Krugly , V.G. Chiorny , O.I. Mikhalchenko , R. Ya. Inasaridze , V.V. Ayvaczian , V. Zhuzhunadze , I.V. Reva , Ch T. Omarov , T. Kwiatkowski , D. Oszkiewicz , V. Troianskyi , B.A. Skiff , O. Maryeva , S. Karpov , Z. Donchev

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引用次数: 0

摘要

我们提出了观测项目的结果，致力于寻找m型小行星对冲效应行为的可能多样性。新的BVR观测得到了10颗小行星，（325）Heidelberga, (382) Dodona, (558) Carmen, (639) Latona, (758) Mancunia, (789) Lena, (1046) Edwin, (1352) Wawel, (2582) Harimaya-Bashi和（5615）Iskander。其中5颗小行星的直径在5到40公里之间。对于所有观测到的小行星，我们获得了宽相位角范围内的光曲线和星等相位曲线。我们确定了这些小行星的自转周期和绝对星等的值。利用我们的新数据，我们将测量到冲日效应的m型小行星的数量增加了一倍，并首次观测到直径小于40公里的m型小行星的冲日效应。我们发现（558）Carmen、（789）Lena和（5615）Iskander这3颗小行星与其他测量的M型和s型小行星相比，表现出较低的对日效应，但相位曲线线性部分的斜率是中等反照率表面的典型特征。它们的对日效应较低的一个可能解释是，与其他小行星相比，它们表面的金属含量更高。

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Opposition effect of M-type asteroids

We present results of the observational program dedicated to search for possible diversity in opposition effect behavior of M-type asteroids. New photometric BVR observations were obtained for 10 asteroids, (325) Heidelberga, (382) Dodona, (558) Carmen, (639) Latona, (758) Mancunia, (789) Lena, (1046) Edwin, (1352) Wawel, (2582) Harimaya-Bashi, and (5615) Iskander. Five of these asteroids have diameters in the range from 5 to 40 km. For all of observed asteroids, we obtained lightcurves and magnitude-phase curves in a wide range of phase angles. We determined values of rotation periods and absolute magnitudes of these asteroids. With our new data, we doubled the number of M-type asteroids with measured opposition effect and for the first time observed opposition effect of M-type asteroids less than 40 km in diameter. We found that three asteroids, (558) Carmen, (789) Lena and (5615) Iskander, exhibit lower values of opposition effect compared to other measured M- and S-type asteroids but the slope of the linear part of the phase curve is typical for moderate-albedo surfaces. A possible explanation of their lower opposition effect is an assumption of a higher metal content on their surfaces as compared to other asteroids.

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来源期刊

Planetary and Space Science 地学天文-天文与天体物理

CiteScore

5.40

自引率

4.20%

发文量

126

审稿时长

15 weeks

期刊介绍： Planetary and Space Science publishes original articles as well as short communications (letters). Ground-based and space-borne instrumentation and laboratory simulation of solar system processes are included. The following fields of planetary and solar system research are covered: • Celestial mechanics, including dynamical evolution of the solar system, gravitational captures and resonances, relativistic effects, tracking and dynamics • Cosmochemistry and origin, including all aspects of the formation and initial physical and chemical evolution of the solar system • Terrestrial planets and satellites, including the physics of the interiors, geology and morphology of the surfaces, tectonics, mineralogy and dating • Outer planets and satellites, including formation and evolution, remote sensing at all wavelengths and in situ measurements • Planetary atmospheres, including formation and evolution, circulation and meteorology, boundary layers, remote sensing and laboratory simulation • Planetary magnetospheres and ionospheres, including origin of magnetic fields, magnetospheric plasma and radiation belts, and their interaction with the sun, the solar wind and satellites • Small bodies, dust and rings, including asteroids, comets and zodiacal light and their interaction with the solar radiation and the solar wind • Exobiology, including origin of life, detection of planetary ecosystems and pre-biological phenomena in the solar system and laboratory simulations • Extrasolar systems, including the detection and/or the detectability of exoplanets and planetary systems, their formation and evolution, the physical and chemical properties of the exoplanets • History of planetary and space research