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Updated Photon Scattering Coefficients (g_values) for Mercury's Exospheric Species
Killen, Rosemary M.; Vervack, Ronald J., Jr.; Burger, Matthew H.
In an optically thin exosphere such as those of Mercury and the Moon, the optically stimulated emissions are directly proportional to the stimulating solar flux. An important quantity in relating measured emission to column abundance in remote-sensing observations is the g_value. The g_value is proportional to the f-value of the emission line and …
Variability of the Sun's Luminosity Places Constraints on the Thermal Equilibrium of the Convection Zone
Dudok de Wit, T.; Vieira, L. E. A.; Kopp, G. +5 more
Luminosity, which is the total amount of radiant energy emitted by an object, is one of the most critical quantities in astrophysics for characterizing stars. Equally important is the temporal evolution of a star's luminosity because of its intimate connection with the stellar energy budget, large-scale convective motion, and heat storage in the s…
MUSUBI (MegaCam Ultra-deep Survey: u*-band Imaging) Data for the COSMOS and SXDS Fields
Ouchi, Masami; Shimasaku, Kazuhiro; Ohyama, Youichi +11 more
The Subaru Hyper Suprime-Cam (HSC) Strategic Survey is the latest-generation multiband optical imaging survey for galaxy evolution and structure formation. The "Ultra-deep" component of the HSC survey provides grizy broadband images over ~3.4 deg2 to detection limits of ~26-28 AB, along with narrowband images, in the COSMOS and SXDS fie…
The Diffuse X-Ray Background of the Insight-HXMT/LE Telescope in the Galactic Plane
Zhang, Shu; Zhang, Shuang-Nan; Liu, Yuan +11 more
Accurately estimating of diffuse X-ray background (DXB) is essential for the investigation of sources in the Galactic plane observed with Insight-HXMT/LE, which is a collimated telescope in the soft X-ray energy band with a relatively large field of view. In the high-Galactic-latitude region, DXB is dominated by the cosmic X-ray background, which …
Dippers from TESS Full-frame Images. II. Spectroscopic Characterization of Four Young Dippers
Takita, Satoshi; Hattori, Kohei; Muto, Takayuki +9 more
Photometric monitoring by the Transiting Exoplanet Survey Satellite (TESS) has discovered not only periodic signals by transiting exoplanets but also episodic or quasiperiodic dimming around young stellar objects. The dimming mechanisms of these objects, the so-called "dippers," are thought to be related to either the accretion property or the str…