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Gaia 19ajj: A Young Star Brightening Due to Enhanced Accretion + Reduced Extinction
Lynne A. Hillenbrand, Bo Reipurth, Michael Connelley +2
We report on the source Gaia 19ajj, identifying it as a young star associated with a little-studied star-forming region seen along a complex line-of-sight through the Gum Nebula. T…
An On-going Mid-infrared Outburst in the White Dwarf 0145+234: Catching in Action of Tidal Disruption of an Exoasteroid?
Ting-Gui Wang, Ning Jiang, Jian Ge +7
We report the detection of a large amplitude MIR outburst in the white dwarf (WD) 0145+234 in the NEOWISE Survey data. The source had a stable MIR flux before 2018, and was brighte…
The CatWISE Preliminary Catalog: Motions from and Data
Peter R. M. Eisenhardt, Federico Marocco, John W. Fowler +19
CatWISE is a program to catalog sources selected from combined and all-sky survey data at 3.4 and 4.6 m (W1 and W2). The CatWISE Preliminary Catalog…
CWISEP J193518.59154620.3: An Extremely Cold Brown Dwarf in the Solar Neighborhood Discovered with CatWISE
Federico Marocco, Dan Caselden, Aaron M. Meisner +17
We present the discovery of an extremely cold, nearby brown dwarf in the solar neighborhood, found in the CatWISE catalog (Eisenhardt et al., in prep.). Photometric follow-up with…
PTF 14jg: The Remarkable Outburst and Post-Burst Evolution of a Previously Anonymous Galactic Star
Lynne A. Hillenbrand, Adam A. Miller, John M. Carpenter +6
We report the outbursting source PTF 14jg, which prior to the onset of its late 2013 eruption, was a faint, unstudied, and virtually uncatalogued star. The salient features of the…