Day 442

Tuesday.

1306.1530
The hunt for Exomoons with Kepler (HEK): III. The first search for an Exomoon around a habitable-zone planet
Kipping et al

Earth-line moons are easily detected for Kepler-22b, residing in a habitable-zone; find no evidence for an exomoon there.

1306.1535
Narrowband Lyman-continuum imaging of galaxies at z~2.85
Mostardi, Shapley, .. Steidel, et al

Lyman-Continuum (LyC) emission at z~2.85, place constraints on the amount of ionizing radiation escaping from SF galaxies.  Probe LyC spectral regions of 29 LBGs and 70 LAEs (spectroscopically confirmed), as well as 58 z~2.85 LAE photometric candidates.While LAEs with LyC detections have lower Lya EW on average, there is no substantial difference in the rest-fram NIR colors of LBGs or ALEs with and without LyC detections.  These observations are consistent with an orientation-dependent model where LyC emission escapes through cleared paths in a patchy ISM.

1306.1563
A measurement of galaxy halo mass from the surrounding HI Ly{\alpha} absorption
Rakic, Schaye, Steidel, ... et al

Measure the DM halo masses of z~2.36 UV color-selected SF galaxies by matching the observed median HI Lya absorption around them, as observed in the spectra of background QSOs, to the absorption around haloes above a given mass in cosmological simulations.  Focusing on transverse separations 0-2 pMpc and LoS separations of 154-616 km/s, find a minimum halo mass of log10 (Mmin/Msun) = 11.6pm0.2 which is in good agreement with published halo mass estimates from clustering analyses.  Verify that the measured halo mass is insensitive to a change in the cosmo parameters (WMAP1 vs WMAP3) and to the inclusion of strong AGN feedback.  One unique strength of this method is that it can be used in narrow field galaxy-QSO surveys (e.g. 30"x30").  In addition, find that the observed anisotropy in the 2D HI Lya absorption distribution on scales of 1.5-2 pMpc is consistent with being a consequence of large-scale gas infall into the potential wells occupied by galaxies.