Results 21 to 30 of about 4,018,158 (274)
As the Worlds Turn: Constraining Spin Evolution in the Planetary-mass Regime [PDF]
Astrophysical Journal, 2020 To understand how planetary spin evolves and traces planet formation processes, we measure rotational line broadening in eight planetary-mass objects (PMOs) of various ages (1–800 Myr) using near-infrared high-resolution spectra from NIRSPEC/Keck ...
M. Bryan +6 more
semanticscholar +1 more source
Size-Resolved Community Structure of Bacteria and Fungi Transported by Dust in the Middle East
Frontiers in Microbiology, 2021 The atmosphere plays an important role in transporting microorganisms on a global scale, yet the processes affecting the composition of the airborne microbiome, the aerobiome, are not fully outlined. Here we present the community compositions of bacteria
Daniella Gat +9 more
doaj +1 more source
Strong Hα emission and signs of accretion in a circumbinary planetary mass companion from MUSE [PDF]
Astronomy & Astrophysics, 2020 Context. Intrinsic Hα emission can be advantageously used to detect substellar companions because it improves contrasts in direct imaging. Characterising this emission from accreting exoplanets allows for the testing of planet formation theories.
S. Eriksson +6 more
semanticscholar +1 more source
On the Potential of Silicon as a Building Block for Life
Life, 2020 Despite more than one hundred years of work on organosilicon chemistry, the basis for the plausibility of silicon-based life has never been systematically addressed nor objectively reviewed.
Janusz Jurand Petkowski +2 more
doaj +1 more source
ALMA 0.88 mm Survey of Disks around Planetary-mass Companions [PDF]
Astronomical Journal, 2020 Characterizing the physical properties and compositions of circumplanetary disks can provide important insights into the formation of giant planets and satellites.
Ya-Lin Wu +8 more
semanticscholar +1 more source
Remote Sensing, 2022 Mass wasting, as one of the most significant geomorphological processes, contributes immensely to planetary landscape evolution. The frequency and diversity of mass wasting features on any planetary body also put engineering constraints on its robotic ...
Lydia Sam, Anshuman Bhardwaj
doaj +1 more source
Planetary Mass Spectrometry for Agnostic Life Detection in the Solar System
Frontiers in Astronomy and Space Sciences, 2021 For the past fifty years of space exploration, mass spectrometry has provided unique chemical and physical insights on the characteristics of other planetary bodies in the Solar System.
L. Chou +14 more
semanticscholar +1 more source
A Rotation Rate for the Planetary-mass Companion DH Tau b [PDF]
Astronomical Journal, 2020 DH Tau b is a young planetary-mass companion orbiting at a projected separation of 320 au from its ∼2 Myr old host star DH Tau. With an estimated mass of 8–22 this object straddles the deuterium-burning limit, and might have formed via core or pebble ...
J. Xuan +5 more
semanticscholar +1 more source
Planetary Nebulae: Sources of Enlightenment [PDF]
PASP, 134, Number 022001, 2022, 2021 In this review/tutorial we explore planetary nebulae as a stage in the evolution of low-to-intermediate-mass stars, as major contributors to the mass and chemical enrichment of the interstellar medium, and as astrophysical laboratories. We discuss many observed properties of planetary nebulae, placing particular emphasis on element abundance ...
arxiv +1 more source
A Wide Planetary-mass Companion to a Young Low-mass Brown Dwarf in Ophiuchus [PDF]
Astrophysical Journal, 2020 We present the discovery of a planetary-mass companion to CFHTWIR-Oph 98, a low-mass brown dwarf member of the young Ophiuchus star-forming region, with a wide 200 au separation (1.″46).
C. Fontanive +8 more
semanticscholar +1 more source