Gaia's binary star renaissance
Stellar multiplicity is among the oldest and richest problems in astrophysics. Binary stars are
a cornerstone of stellar mass and radius measurements that underpin modern stellar …
a cornerstone of stellar mass and radius measurements that underpin modern stellar …
The faintest dwarf galaxies
JD Simon - Annual Review of Astronomy and Astrophysics, 2019 - annualreviews.org
The lowest luminosity (L) Milky Way satellite galaxies represent the extreme lower limit of the
galaxy luminosity function. These ultra-faint dwarfs are the oldest, most dark matter …
galaxy luminosity function. These ultra-faint dwarfs are the oldest, most dark matter …
The GALAH+ survey: Third data release
The ensemble of chemical element abundance measurements for stars, along with precision
distances and orbit properties, provides high-dimensional data to study the evolution of the …
distances and orbit properties, provides high-dimensional data to study the evolution of the …
Stellar initial mass function varies with metallicity and time
Most structural and evolutionary properties of galaxies strongly rely on the stellar initial mass
function (IMF), namely the distribution of the stellar mass formed in each episode of star …
function (IMF), namely the distribution of the stellar mass formed in each episode of star …
A noninteracting galactic black hole candidate in a binary system with a main-sequence star
S Chakrabarti, JD Simon, PA Craig… - The Astronomical …, 2023 - iopscience.iop.org
We describe the discovery of a solar neighborhood (d= 468 pc) binary system with a main-
sequence sunlike star and a massive noninteracting black hole candidate. The spectral …
sequence sunlike star and a massive noninteracting black hole candidate. The spectral …
Gaia Early Data Release 3-The Gaia Catalogue of Nearby Stars
Aims. We produce a clean and well-characterised catalogue of objects within 100 pc of the
Sun from the Gaia Early Data Release 3. We characterise the catalogue through …
Sun from the Gaia Early Data Release 3. We characterise the catalogue through …
New insights into the evolution of massive stars and their effects on our understanding of early galaxies
The observable characteristics and subsequent evolution of young stellar populations is
dominated by their massive stars. As our understanding of those massive stars and the …
dominated by their massive stars. As our understanding of those massive stars and the …
Age dissection of the Milky Way discs: Red giants in the Kepler field
Ensemble studies of red-giant stars with exquisite asteroseismic (Kepler), spectroscopic
(APOGEE), and astrometric (Gaia) constraints offer a novel opportunity to recast and …
(APOGEE), and astrometric (Gaia) constraints offer a novel opportunity to recast and …
What is a globular cluster? An observational perspective
Globular clusters are large and dense agglomerate of stars. At variance with smaller clusters
of stars, they exhibit signs of some chemical evolution. At least for this reason, they are …
of stars, they exhibit signs of some chemical evolution. At least for this reason, they are …
Impact of radiative feedback on the initial mass function of metal-poor stars
The stellar initial mass function (IMF) in the early universe is essential to understand the
formation of ancient galaxies. To this end, we conduct a series of long-term radiation …
formation of ancient galaxies. To this end, we conduct a series of long-term radiation …