Elisabeth R. Adams et al 2016 AJ 152 47

Data from Kepler’s K2 mission reveals 19 planet candidates with periods of <1 day, yielding an occurrence rate for ultra-short-period planets among K2 stars that’s ~1/2 that estimated from the Kepler sample.

S. J. Smartt et al 2016 ApJ 827 L40

The search for an optical counterpart to GW151226 using Pan-STARRS1 yielded 49 extragalactic transients, none of which were found to be likely to be linked to the gravitational wave signal.

Nikta Amiri and Jeremy Darling 2016 ApJ 826 136

Luminous water masers are useful for astrometry and proper motion studies. A study of M31 finds water-maser-emitting regions to be more infrared-luminous and show higher star-formation rates.

E. Bon et al 2016 ApJS 225 29

43 years of spectroscopic observations of the Seyfert 1 galaxy NGC 5548 reveal a ~5700 day periodicity in its light curves, consistent with orbital motion inside the broad emission line region of the source.

Graeme H. Smith et al 2016 AJ 152 43

An XMM-Newton search of two subdwarfs and a subgiant suggests that coronal activity decreases with age among the oldest G dwarfs, but K-M subdwarfs possibly have maintained a solar-like level of activity.

G. Barro et al 2016 ApJ 827 L32

ALMA dust continuum observations of six dusty star-forming galaxies at z ~ 2.5 suggest that strong nuclear starbursts transform larger, star-forming progenitors into compact quiescent galaxies.