41 datasets found

Gaia Data Release 3 (DR3) data have revealed new massive runaway stars, while large spectroscopic surveys now enable detailed characterization studies. However, the relative...

The catalog results from a survey for distant Field K giants in the Galactic halo made for purposes of locating a chemically and kinematically unbiased sample out to about 25...

HD-166620 was recently identified as a Maunder minimum candidate based on nearly 50 years of CaII H and K activity data from Mount Wilson and Keck HIRES. These data showed clear...

Utilizing astrometric parameters sourced from Gaia Data Release 3 and radial velocities obtained from various spectroscopic surveys, we identify 519 high-velocity stars (HiVels)...

Thousands of exoplanet detections have been made over the last 25 years using Doppler observations, transit photometry, direct imaging, and astrometry. Each of these methods is...

To accurately characterize the planets a star may be hosting, stellar parameters must first be well determined. {tau}Ceti is a nearby solar analog and often a target for...

We assemble a large sample of 12784 high-velocity stars with total velocity VGSR>~300km/s, selected from RAVE DR5, SDSS DR12, LAMOST DR8, APOGEE DR16, GALAH DR2, and Gaia...

Radial velocity (RVel) measurements of transiting multiplanet systems allow us to understand the densities and compositions of planets unlike those in the solar system....

From the thousands of known exoplanets, those that transit bright host stars provide the greatest accessibility toward detailed system characterization. The first known such...

The distribution of spin-orbit angles for systems with wide-separation, tidally detached exoplanets offers a unique constraint on the prevalence of dynamically violent planetary...

With Hubble Space Telescope Fine Guidance Sensor astrometry and published and previously unpublished radial velocity measures, we explore the exoplanetary system {mu}Arae. Our...

Orbital dynamics provide valuable insights into the evolution and diversity of exoplanetary systems. Currently, only one hot Jupiter, WASP-12b, is confirmed to have a decaying...

Little is known about the origin of the fastest stars in the Galaxy. Our understanding of the chemical evolution history of the Milky Way and surrounding dwarf galaxies allows...

{pi} Men hosts a transiting planet detected by the Transiting Exoplanet Survey Satellite space mission and an outer planet in a 5.7yr orbit discovered by radial velocity (RVel)...

Idealized protoplanetary disk and giant planet formation models have been interpreted to suggest that a giant planet's atmospheric abundances can be used to infer its formation...

Optical reflected light eclipse observations provide a direct probe of exoplanet scattering properties, such as from aerosols. We present here the photometric reflected light...

A catalogue of uvby-{beta} photometry for 87 of the turn-off and subgiant stars from the HK survey of Beers et al. (1992AJ....103.1987B, BPSII) is given. Most of these stars...

The third Gaia data release includes 33.8 million radial velocity measurements, extending to a magnitude of G_RVS_=14. To reach this magnitude limit, spectra were processed down...

Runaway stars with peculiar high velocities can generate stellar bow shocks. Only a few bow shocks show clear radio emission. Our goal is to identify and characterize new...

The data from the Gaia satellite led us to revise our conception of the Galaxy structure and history. Hitherto unknown components have been discovered and a deep re-thinking of...