Lynne A. Hillenbrand et al 2019 AJ 158 240
The slow rise observed in the optical lightcurve of Gaia 19ajj, a young star associated with a little-studied star-forming region, may be caused by cycles of enhanced disk accretion accompanied by reduced extinction.
M. G. Aartsen et al 2019 ApJ 886 12
Seven years of searching with IceCube for cascade events with energies as low as ~1 TeV induced by neutrinos of all flavors has revealed no significant clustering, placing stringent constraints on neutrino astronomy.
Ting-gui Wang et al 2019 ApJL 886 L5
A recent large-amplitude mid-infrared outburst in the white dwarf 0145+234 in the NEOWISE Survey data is consistent with the tidal breakup of an exoasteroid by the white dwarf.
Benjamin J. S. Pope et al 2019 ApJS 245 8
Via analysis of the unsaturated scattered-light “halo” around the stars that saturated the Kepler detector, precise light curves are retrieved for of most of the brightest stars in K2 fields from Campaign 4 onward.
José G. Fernández-Trincado et al 2019 ApJL 886 L8
A unique collection of metal-poor giant stars that exhibit anomalously high levels of 28Si have been found in the Milky Way’s inner stellar halo, possibly pointing to a past accretion event.
Heather A. Elliott et al 2019 ApJ 885 156
New Horizons measurements show that the solar wind speed is reduced by 5%–7% between 30 and 43 AU relative to the speeds at 1 AU, as the wind encounters an increasing amount of interstellar material.