Search Publications
Missions
Journals
Publication Years
Spectroscopic Confirmation of Five Galaxy Clusters at z > 1.25 in the 2500 deg2 SPT-SZ Survey
Bayliss, M. B.; Sharon, K.; Gladders, M. D. +29 more
We present spectroscopic confirmation of five galaxy clusters at 1.25 < z < 1.5, discovered in the 2500 deg2 South Pole Telescope Sunyaev-Zel’dovich (SZ) survey. These clusters, taken from a mass-limited sample with a nearly redshift-independent selection function, have multiwavelength follow-up imaging data from the X-ray to near…
Effective Temperatures of Low-mass Stars from High-resolution H-band Spectroscopy
Kesseli, Aurora Y.; Muirhead, Philip S.; Johns-Krull, Christopher M. +9 more
High-resolution, near-infrared spectra will be the primary tool for finding and characterizing Earth-like planets around low-mass stars. Yet, the properties of exoplanets cannot be precisely determined without accurate and precise measurements of the host star. Spectra obtained with the Immersion Grating Infrared Spectrometer simultaneously provid…
Titan Surface Temperatures during the Cassini Mission
Flasar, F. M.; Coustenis, A.; Achterberg, R. K. +11 more
By the close of the Cassini mission in 2017 the Composite Infrared Spectrometer had recorded surface brightness temperatures on Titan for 13 yr (almost half a Titan year). We mapped temperatures in latitude from pole to pole in seven time segments from northern mid-winter to northern summer solstice. At the beginning of the mission the warmest tem…
Fast-cadence TESS Photometry and Doppler Tomography of the Asynchronous Polar CD Ind: A Revised Accretion Geometry from Newly Proposed Spin and Orbital Periods
Garnavich, Peter; Littlefield, Colin; Szkody, Paula +5 more
The Transiting Exoplanet Survey Satellite observed the asynchronous polar (AP) CD Ind at a 2 min cadence almost continuously for 28 days in 2018, covering parts of five consecutive cycles of the system’s 7.3 day beat period. These observations provide the first uninterrupted photometry of a full spin-orbit beat cycle of an AP. Twice per beat cycle…
Radial Velocity Discovery of an Eccentric Jovian World Orbiting at 18 au
Vanderburg, Andrew; Cochran, William D.; Endl, Michael +25 more
Based on two decades of radial velocity (RV) observations using Keck/High Resolution Echelle Spectrometer (HIRES) and McDonald/Tull, and more recent observations using the Automated Planet Finder, we found that the nearby star HR 5183 (HD 120066) hosts a 3 {M}{{J}} minimum mass planet with an orbital period of {74}-22+43…
The Acceleration of Energetic Particles at Coronal Shocks and Emergence of a Double Power-law Feature in Particle Energy Spectra
Chen, Yao; Giacalone, Joe; Guo, Fan +1 more
We present numerical modeling of particle acceleration at coronal shocks propagating through a streamer-like magnetic field by solving the Parker transport equation with spatial diffusion both along and across the magnetic field. We show that the location on the shock where the high-energy particle intensity is the largest, depends on the energy o…
Signs of accretion in the white dwarf + brown dwarf binary NLTT5306
Maxted, P. F. L.; Page, K. L.; Wynn, G. A. +4 more
We present new XSHOOTER spectra of NLTT5306, a 0.44 ± 0.04 M⊙ white dwarf in a short period (101 min) binary system with a brown dwarf companion that is likely to have previously undergone common envelope evolution. We have confirmed the presence of H α emission and discovered Na I absorption associated with the white dwarf. These obser…
Compact Star-forming Galaxies as Old Starbursts Becoming Quiescent
Ivison, R. J.; Gómez-Guijarro, C.; Magdis, G. E. +8 more
Optically compact star-forming galaxies (SFGs) have been proposed as immediate progenitors of quiescent galaxies, although their origin and nature are debated. Were they formed in slow secular processes or in rapid merger-driven starbursts? Answering this question would provide fundamental insight into how quenching occurs. We explore the location…
The integrated properties of the CALIFA galaxies: model-derived galaxy parameters and quenching of star formation
Zezas, A.; Ciesla, L.; Charmandaris, V. +6 more
We present a study of the integrated properties of the 835 galaxies in the Calar-Alto Legacy Integral Field spectroscopy Area survey. To derive the main physical parameters of the galaxies we have fitted their UV-to-IR spectral energy distributions (SEDs) with sets of theoretical models using CIGALE. We perform a comparison of the integrated galax…
Local standard of rest based on Gaia DR2 catalog
Zhu, Zi; Liu, Jia-Cheng; Ding, Ping-Jie
The local standard of rest (LSR) provides a reference framework for studies of Galactic kinematics. Determination of the LSR corresponds to the measurement of solar peculiar motion, which is under debate due to the fact that different methods and samples have been used. Adopting the astrometric data and line-of-sight velocities of main sequence st…