HELSINKI — China launched a remote sensing satellite for Pakistan late Wednesday as space sector collaboration between the countries continues to grow.
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Category: 2. Space
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China launches remote sensing satellite for Pakistan with Kuaizhou-1A rocket
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Star’s Violent Death Could Reveal a Rare ‘Missing Link’ Black Hole : ScienceAlert
In a galaxy some 450 million light-years away, a brilliant flare of light revealed a probable black hole that suddenly woke from its slumber to snack on a passing star. This is not, in itself, a hugely unusual occurrence.
The sting in this…
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Senate Commerce Committee advances Jacobs nomination for NOAA administrator
WASHINGTON — The Senate Commerce Committee advanced the nomination of Neil Jacobs to lead the National Oceanic and Atmospheric Administration as that agency’s top satellite official remains on administrative leave.
To continue…
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Discovery of Faint Nebulosity around a Z Camelopardalis–type Cataclysmic Variable in Antlia: Nova Shell or Ancient Planetary Nebula?
We report our discovery of a faint nebula surrounding a previously little-studied 15th mag variable star, ASASSN-19ds, in the Southern Hemisphere constellation Antlia. Spectra verify that the star is a cataclysmic variable (CV). Using new and…
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Young Stellar Objects in the Carina Nebula: Near-infrared Variability and Spectroscopy
We present a catalog of 652 young stellar objects (YSOs) in the Carina star-forming region. The catalog was constructed by combining near-infrared KS-band variability from the VISTA Variables in the Vía Láctea eXtended survey and…
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Erratum: “Exploring the Extremes: Characterizing a New Population of Old and Cold Brown Dwarfs” (2023, AJ, 166, 57)
Erratum: “Exploring the Extremes: Characterizing a New Population of Old and Cold Brown Dwarfs” (2023, AJ, 166, 57)
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The James Webb Space Telescope Absolute Flux Calibration. IV. Near-Infrared Imager and Slitless Spectrograph Imaging
The absolute flux calibration of the Near-infrared Imager and Slitless Spectrograph (NIRISS) imaging modes is derived using observations of photometric standards with the James Webb Space Telescope (JWST). The calibration converts the ramp slope…
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Investigating Transit Timing Variations in the Ultrashort Period Exoplanet WASP-19b
In this study, we present a comprehensive analysis of transit timing variations (TTVs) in the ultrashort-period gas giant WASP-19b, which orbits a G-type main-sequence star. Our analysis is based on a data set comprising 204 transit light curves…
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Microlensing Constraints on the Stellar and Planetary Mass Functions
The mass function (MF) of isolated objects measured by microlensing consists of both a stellar and a planetary component. We compare the microlensing MFs of A. Gould et al. and T. Sumi et al. to other measurements of the MF. The abundance of…
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