The spectral energy distributions (SEDs) of galaxies are shaped by nearly every physical
property of the system, including the star-formation history, metal content, abundance …

Within the next few years, GAIA and several instruments aiming to image extrasolar planets
will be ready. In parallel, low-mass planets are being sought around red dwarfs, which offer …

The broadening of atomic emission lines by high-velocity motion of gas near accreting
supermassive black holes is an observational hallmark of quasars. Observations of broad …

Precise and accurate parameters for late-type (late K and M) dwarf stars are important for
characterization of any orbiting planets, but such determinations have been hampered by …

Abstract The Apache Point Observatory Galactic Evolution Experiment (APOGEE), one of the
programs in the Sloan Digital Sky Survey III (SDSS-III), has now completed its systematic …

M dwarf stars, which have masses less than 60 per cent that of the Sun, make up 75 per cent
of the population of the stars in the Galaxy. The atmospheres of orbiting Earth-sized planets …

We present new, more precise measurements of the mass and distance of our Galaxy's
central supermassive black hole, Sgr A*. These results stem from a new analysis that more …

We combine optical, near-infrared, and mid-infrared spectra and photometry to construct
expanded spectral energy distributions for 145 field age (> 500 Myr) and 53 young (lower …

The spectral absorption lines in early-type galaxies contain a wealth of information
regarding the detailed abundance pattern, star formation history, and stellar initial mass …

Previous studies of planet occurrence rates largely relied on photometric stellar
characterizations. In this paper, we present planet occurrence rates for mid-type M dwarfs …