Disk and Envelope Streamers of the GGD 27-MM1 Massive Protostar
The Astrophysical Journal, 2023 We present new Atacama Large Millimeter/submillimeter Array 0.98 mm observations of the continuum emission and several molecular lines toward the high-mass protostellar system GGD 27-MM1, driving the HH 80-81 radio jet.
M. Fernández-López +6 more
doaj +1 more source
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
INTERSTELLAR MEDIUM AND DECAMETER RADIO SPECTROSCOPY [PDF]
Radio Physics and Radio Astronomy, 2021 Purpose: The analytical review of the main results of research in the new direction of the low-frequency radio astronomy, the interstellar medium radio spectroscopy at decameter waves, which had led to astrophysical discovery, recording of the radio ...
S. V. Stepkin +3 more
doaj +1 more source
High‐Pressure Carbonaceous Phases as Minerals
Geophysical Monograph Series, Page 11-23., 2020 This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.
Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions
Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Oliver Tschauner
wiley +1 more source
Localizing the First Interstellar Meteor with Seismometer Data
Signals, 2023 The first meter-scale interstellar meteor (IM1) was detected by US government sensors in 2014, identified as an interstellar object candidate in 2019, and confirmed by the Department of Defense (DoD) in 2022.
Amir Siraj, Abraham Loeb
doaj +1 more source
Capture of interstellar objects – I. The capture cross-section [PDF]
Monthly Notices of the Royal Astronomical Society, 2021 ABSTRACT We study the capture of interstellar objects (ISOs) by a planet–star binary with mass ratio q ≪ 1, semimajor axis ap, orbital speed vc, and eccentricity ep. Very close (slingshot) and wide encounters with the planet are amenable to analytical treatment, while numerically obtained capture cross-sections σ closely follow the ...
Dehnen, Walter, Hands, Thomas O
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Retrograde orbits excess among observable interstellar objects [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 ABSTRACT In this work, we investigate the orbital distribution of interstellar objects (ISOs), observable by the future wide-field National Science Foundation Vera C. Rubin Observatory (VRO). We generate synthetic population of ISOs and simulate their ephemerides over a period of 10 yr, in order to select those that may be observed by ...
Dušan Marčeta, Bojan Novaković
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Radio SETI observations of the interstellar object ′OUMUAMUA [PDF]
Acta Astronautica, 2019 10 pages, 5 figures, submitted to Astrophysical ...
Harp, G. R. +4 more
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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
Interstellar extinction from photometric surveys: application to four high-latitude areas
Open Astronomy, 2018 Information on interstellar extinction and dust properties may be obtained from modern large photometric surveys data. Virtual Observatory facilities allow users to make a fast and correct cross-identification of objects from various surveys. It yields a
Malkov Oleg +13 more
doaj +1 more source