Results 81 to 90 of about 5,095,486 (206)
Journal of Geophysical Research: Planets, Volume 131, Issue 4, April 2026.Abstract Xenon (Xe) is a heavy noble gas with intriguing chemical properties, such as having several stable isotopes and the ability to form compounds under extreme conditions. Despite the predictions based on cosmochemical models that suggest xenon should be relatively abundant in planetary reservoirs, empirical data indicate a significant depletion ...
Avinash Kumar Both +2 more
wiley +1 more source
Earth and Planetary PhysicsResearch on the interstellar medium and its interaction with the solar system constitutes a significant topic in planetary physics. As the Sun traverses the local interstellar cloud, interstellar neutrals penetrate the heliosphere, forming the ...
JiaLing Lyu +3 more
doaj +1 more source
The HI Distribution Observed toward a Halo Region of the Milky Way
Galaxies, 2017 We use observations of the neutral atomic hydrogen (HI) 21-cm emission line to study the spatial distribution of the HI gas in a 80° × 90° region of the Galaxy halo.
Ericson López +3 more
doaj +1 more source
Optical Emission Lines from Warm Interstellar Clouds: A Decisive Test of the Decaying Neutrino Theory [PDF]
The Astrophysical Journal, 1998 Recently developed instruments such as the Taurus Tunable Filter and WHAM should be able to detect some or all of the optical emission lines H$α$, [OI] $λ$6300, [SII] $λ$6717, [NI] $λ$ 5200 and [NII] $λ$6584 from warm interstellar clouds such as those observed by Spitzer $&$ Fitzpatrick (1993) (SF) along the line of sight to the halo star HD93521 ...
openaire +2 more sources
Journal of Geophysical Research: Planets, Volume 131, Issue 4, April 2026.Abstract The Radiation Assessment Detector (RAD) on the Curiosity rover has been characterizing the Martian surface radiation field since 2012. The dose observed by RAD is influenced by a variety of factors, including an essential one, the terrain. After parking near Murray Buttes in September 2016 where it first detected a ∼5% decrease in dose rate ...
Jingnan Guo +12 more
wiley +1 more source
The Astrophysical Journal Supplement SeriesThe H α emission line commonly appears in the spectra of many stars and serves as a key indicator for tracing ionized interstellar gas, investigating stellar activity, and studying gas dynamics.
Lei Tan +9 more
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Observations of Interstellar Molecular Hydrogen Emission [PDF]
, 1978 NOTE: Text or symbols not renderable in plain ASCII are indicated by [...]. Abstract is included in .pdf document. A search for interstellar molecular hydrogen emission, as seen in the v = 1 -> 0 S(l) line, is presented.
Beckwith, Steven Van Walter
core +1 more source
Unveiling Fiber Networks and Core Formation in the DR21 South Filament
The Astronomical JournalWe present high-resolution (∼1000 au) 3 mm observations with the NOrthern Extended Millimeter Array toward the DR21 South Filament (DR21SF), aiming to reveal its internal fragmentation and search for deeply embedded star-forming activities.
Kai Yang, Keping Qiu, Xing Pan
doaj +1 more source
Interstellar absorption in the MG II resonance line k2 and h2 emissions
The Astrophysical Journal, 1981 High-resolution (0.2 A) IUE spectra for the long wavelength range (1800-3000 A) have been studied. It is shown that narrow interstellar Mg II lines are seen in the center of the k2 and h2 emissions from nearby stars with large rotational velocities. For all observed stars, the radial velocity of the central k3 absorption component in the rest system of
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Comparison of Global H i and Hα Line Profiles in MaNGA Galaxy Pairs with FAST
The Astrophysical JournalWe present case studies comparing the global H i and H α emission line profiles of six galaxy pairs. The six pairs are selected to have different nuclear activities, with two hosting an active galactic nucleus, and in different merging stages—two of each
Gaoxiang Jin +5 more
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