Results 21 to 30 of about 1,287,571 (199)
Interstellar Objects Follow the Collapse of Molecular Clouds [PDF]
The Astrophysical Journal, 2021 Abstract Interstellar objects (ISOs), the parent population of 1i/‘Oumuamua and 2i/Borisov, are abundant in the interstellar medium of the Milky Way. This means that the interstellar medium, including molecular-cloud regions, has three components: gas, dust, and ISOs.
Susanne Pfalzner +3 more
openaire +6 more sources
Capture of interstellar objects – II. By the Solar system [PDF]
Monthly Notices of the Royal Astronomical Society, 2021 ABSTRACT Capture of interstellar objects (ISOs) into the Solar system is dominated by ISOs with asymptotic incoming speeds $v_\infty \lt 4\,$km s−1. The capture rate is proportional to the ISO phase-space density in the Solar vicinity and does not vary along the Sun’s Galactic orbit, i.e.
Walter Dehnen +2 more
openaire +3 more sources
Spitzer Observations of Interstellar Object 1I/‘Oumuamua [PDF]
The Astronomical Journal, 2018 Abstract 1I/‘Oumuamua is the first confirmed interstellar body in our solar system. Here we report on observations of ‘Oumuamua made with the Spitzer Space Telescope on 2017 November 21–22 (UT). We integrated for 30.2 hr at 4.5 μm (IRAC channel 2). We did not detect the object and place an upper limit on the flux of 0.3 μJy (3σ).
David E. Trilling +22 more
openaire +5 more sources
The Interstellar Object ’Oumuamua as a Fractal Dust Aggregate [PDF]
The Astrophysical Journal Letters, 2019 Abstract The first known interstellar object ’Oumuamua exhibited a nongravitational acceleration that appeared inconsistent with cometary outgassing, leaving radiation pressure as the most likely force. Barring the alien lightsail hypothesis, an ultra-low density due to a fractal structure might also explain the acceleration of ’Oumuamua
Eirik G. Flekkøy +2 more
openaire +5 more sources
A fast response mission to rendezvous with an interstellar object [PDF]
Experimental Astronomy, 2022 17 pages, 9 ...
Darren Garber +6 more
openaire +4 more sources
Turbulence in the interstellar medium [PDF]
, 2014 Turbulence is ubiquitous in the insterstellar medium and plays a major role in several processes such as the formation of dense structures and stars, the stability of molecular clouds, the amplification of magnetic fields, and the re-acceleration and ...
Chian, A. C. -L. +9 more
core +2 more sources
Solar Sails : Technology and demonstration status [PDF]
, 2012 Solar Sail propulsion has been validated in space (IKAROS, 2012) and soon several more solar-sail propelled spacecraft will be flown. Using sunlight for spacecraft propulsion is not a new idea.
Johnson, Les +5 more
core +4 more sources
Detection Rate of <50-meter Interstellar Objects with LSST [PDF]
, 2023 The previous decade saw the discovery of the first four known interstellar objects due to advances in astronomical viewing equipment. Future sky surveys with greater sensitivity will allow for more frequent detections of such objects, including ...
Loeb, Abraham, Ezell, Carson
core +1 more source
Modelling and observations of molecules in discs around young stars [PDF]
, 2013 This thesis contains a study of molecules within circumstellar discs around young stars. Firstly, the chemistry of a disc around a young, Class 0 protostar is modelled.
Ilee, John David
core +6 more sources
The interaction of the supermassive object R136a with the interstellar environment [PDF]
Symposium - International Astronomical Union, 1984 R136a is the luminous object in the core of the 30 Dor nebula in the LMC, embedded in the extremely young star cluster NGC 2070 with the most recent star forming event less 106 yr ago. R136a-1 (V = 11.08) lies in the center of this cluster. The companion or foreground star R136a-2 (ca.
J. V. Feitzinger, Th. Schmidt-Kaler
openaire +1 more source