Results 31 to 40 of about 16,023 (53)
A Survey of Herbig Ae/Be Multiplicity
The Astronomical Journal, 2023 Although the majority of Herbig Ae/Be (HAEBE) stars are likely multiple systems, relatively few multiples have been identified. We aim to create a statistically significant survey of HAEBE multiplicity as a function of stellar mass, to shed light on ...
S. J. Thomas +7 more
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Eliminating Massive Martian Dust Storms from Images of Tianwen-1 via Deep Learning
The Astronomical Journal, 2023 Dust storms may remarkably degrade the imaging quality of Martian orbiters and delay the progress of mapping the global topography and geomorphology. To address this issue, this paper presents an approach that reuses the image dehazing knowledge obtained
Jia Li +4 more
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Backscattering and Line Broadening in Orion
The Astronomical Journal, 2022 Examination of emission lines in high-velocity-resolution optical spectra of the Orion Nebula confirms that the velocity component on the red wing of the main ionization front emission line is due to backscattering in the Photon Dominated Region.
C. R. O’Dell +2 more
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Independent Validation of the Temperate Super-Earth HD 79211 b using HARPS-N
The Astronomical Journal, 2023 We present high-precision radial velocities (RVs) from the HARPS-N spectrograph for HD 79210 and HD 79211, two M0V members of a gravitationally bound binary system. We detect a planet candidate with a period of ${24.421}_{-0.017}^{+0.016}$ days around HD
Victoria DiTomasso +30 more
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Evidence for the Disruption of a Planetary System During the Formation of the Helix Nebula
The Astronomical Journal, 2022 The persistence of planetary systems after their host stars evolve into their post-main-sequence phase is poorly constrained by observations. Many young white dwarf systems exhibit infrared excess emission and/or spectral absorption lines associated with
Jonathan P. Marshall +7 more
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Discovering Jewish Studies Collections in Academic Libraries: A Practical Guide
, 2014 The U.S. colleges and universities offering non-sectarian educational programs in Jewish Studies rely on the support of their academic libraries for research materials and library services.
Taler, Izabella
core
Predicting Interstellar Object Chemodynamics with Gaia
The Astronomical JournalThe interstellar object (ISO) population of the Milky Way is a product of its stars. However, what is in fact a complex structure in the solar neighborhood has traditionally in ISO studies been described as smoothly distributed.
Matthew J. Hopkins +2 more
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Deep learning application for stellar parameter determination: III-denoising procedure
Open AstronomyIn this third article in a series, we investigate the need of spectra denoising for the derivation of stellar parameters. We have used two distinct datasets for this work. The first one contains spectra in the range of 4,450–5,400 Å at a resolution of 42,
Gebran Marwan +3 more
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The Planetary Science JournalMeasurements made by Voyager 2 during its flyby of Uranus in 1986 found warm stratospheric and hot thermospheric temperatures that cannot be explained by solar energy alone.
William R. Saunders +4 more
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The NEID Earth Twin Survey. I. Confirmation of a 31 Day Planet Orbiting HD 86728
The Astronomical JournalWith close to 3 yr of observations in hand, the NEID Earth Twin Survey (NETS) is starting to unearth new astrophysical signals for a curated sample of bright, radial velocity (RV)-quiet stars.
Arvind F. Gupta +23 more
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