Search Publications
Missions
Journals
Publication Years
Search for Continuous Gravitational Waves from the Central Compact Objects in Supernova Remnants Cassiopeia A, Vela Jr., and G347.3-0.5
Gotthelf, E. V.; Allen, B.; Dergachev, V. +6 more
We perform a sub-threshold follow-up search for continuous nearly monochromatic gravitational waves from the central compact objects associated with the supernova remnants (SNRs) Vela Jr., Cassiopeia A, and SNR G347.3-0.5. Across the three targets, we investigate the most promising ≈10,000 combinations of gravitational-wave frequency and frequency…
A Diffuse Metal-poor Component of the Sagittarius Stream Revealed by the H3 Survey
Conroy, Charlie; Ting, Yuan-Sen; Cargile, Phillip A. +6 more
The tidal disruption of the Sagittarius dwarf galaxy has generated a spectacular stream of stars wrapping around the entire Galaxy. We use data from Gaia and the H3 Stellar Spectroscopic Survey to identify $823$ high-quality Sagittarius members based on their angular momenta. The H3 Survey is largely unbiased in metallicity, and so our sample of S…
Full orbital solution for the binary system in the northern Galactic disc microlensing event Gaia16aye
Reichart, D. E.; Harrison, D. L.; Hanlon, L. +182 more
Gaia16aye was a binary microlensing event discovered in the direction towards the northern Galactic disc and was one of the first microlensing events detected and alerted to by the Gaia space mission. Its light curve exhibited five distinct brightening episodes, reaching up to I = 12 mag, and it was covered in great detail with almost 25 000 data …
Mass determinations of the three mini-Neptunes transiting TOI-125
Bouchy, F.; Fridlund, M.; Rauer, H. +79 more
The Transiting Exoplanet Survey Satellite, TESS, is currently carrying out an all-sky search for small planets transiting bright stars. In the first year of the TESS survey, a steady progress was made in achieving the mission's primary science goal of establishing bulk densities for 50 planets smaller than Neptune. During that year, the TESS's obs…
The Semiforbidden C III] λ1909 Emission in the Rest-ultraviolet Spectra of Green Pea Galaxies
Ferguson, Henry C.; Ravindranath, Swara; Jaskot, Anne +2 more
We used the Space Telescope Imaging Spectrograph on the Hubble Space Telescope (HST) to observe the semiforbidden C III] λλ1907, 1909 doublet emission in green pea galaxies at 0.13 ≤ z ≤ 0.3. We detect C III] emission in 7/10 galaxies with C III] equivalent widths (EWs) that range from 2 to 10 Å, confirming that C III] emission is almost ubiquitou…
Evidence for a Highly Opaque Large-scale Galaxy Void at the End of Reionization
Ouchi, Masami; Shibuya, Takatoshi; Kashino, Daichi +2 more
We present evidence that a region of high effective Lyα optical depth at z ∼ 5.7 is associated with an underdense region at the tail end of cosmic reionization. We carried out a survey of Lyman-break Galaxies (LBGs) using Subaru Hyper Suprime-Cam in the field of the z = 5.98 quasar J0148+0600, whose spectrum presents an unusually long (∼160 cMpc) …
Improving galaxy clustering measurements with deep learning: analysis of the DECaLS DR7 data
Ross, Ashley J.; Seo, Hee-Jong; Rezaie, Mehdi +1 more
Robust measurements of cosmological parameters from galaxy surveys rely on our understanding of systematic effects that impact the observed galaxy density field. In this paper, we present, validate, and implement the idea of adopting the systematics mitigation method of artificial neural networks for modelling the relationship between the target g…
Five New Post-main-sequence Debris Disks with Gaseous Emission
Hermes, J. J.; Clemens, J. C.; Lai, Samuel +13 more
Observations of debris disks, the products of the collisional evolution of rocky planetesimals, can be used to trace planetary activity across a wide range of stellar types. The most common end points of stellar evolution are no exception, as debris disks have been observed around several dozen white dwarf stars. But instead of planetary formation…
A HARPS RV search for planets around young nearby stars
Meunier, N.; Messina, S.; Keppler, M. +11 more
Context. Young nearby stars are good candidates in the search for planets with both radial velocity (RV) and direct imaging techniques. This, in turn, allows for the computation of the giant planet occurrence rates at all separations. The RV search around young stars is a challenge as they are generally faster rotators than older stars of similar …
The synthetic Emission Line COSMOS catalogue: Hα and [O II] galaxy luminosity functions and counts at 0.3 < z < 2.5
Ilbert, Olivier; Saito, Shun; Yabe, Kiyoto +3 more
Star-forming galaxies with strong nebular and collisional emission lines are privileged target galaxies in forthcoming cosmological large galaxy redshift surveys. We use the COSMOS2015 photometric catalogue to model galaxy spectral energy distributions and emission-line fluxes. We adopt an empirical but physically motivated model that uses informa…