203 citations · 1.2k across the 26 of their papers we have counts for
26 papers
Elemental Abundances in And XIX From Coadded Spectra
L. R. Cullinane, Karoline M. Gilbert, Ivanna Escala +6
With a luminosity similar to that of Milky Way dwarf spheroidal (dSph) systems like Sextans, but a spatial extent similar to that of ultradiffuse galaxies (UDGs), Andromeda (And) X…
RomAndromeda: The Roman Survey of the Andromeda Halo
Arjun Dey, Joan Najita, Carrie Filion +50
As our nearest large neighbor, the Andromeda Galaxy provides a unique laboratory for investigating galaxy formation and the distribution and substructure properties of dark matter…
Elemental abundances in M31: Individual and Coadded Spectroscopic [Fe/H] and [α/Fe] throughout the M31 Halo with SPLASH
J. Leigh Wojno, Karoline M. Gilbert, Evan N. Kirby +6
We present spectroscopic chemical abundances of red giant branch (RGB) stars in Andromeda (M31), using medium resolution () spectra obtained via the Spectroscopic and Ph…
Resolved SPLASH Chemodynamics in Andromeda's PHAT Stellar Halo and Disk: On the Nature of the Inner Halo Along the Major Axis
Ivanna Escala, Amanda C. N. Quirk, Puragra Guhathakurta +5
Stellar kinematics and metallicity are key to exploring formation scenarios for galactic disks and halos. In this work, we characterized the relationship between kinematics and pho…
A Sun-like star orbiting a black hole
Kareem El-Badry, Hans-Walter Rix, Eliot Quataert +18
We report discovery of a bright, nearby () Sun-like star orbiting a dark object. We identified the system as a black hole candidate via its astrometri…
The TREX Survey: Kinematical Complexity Throughout M33's Stellar Disk and Evidence for a Stellar Halo
Karoline M. Gilbert, Amanda C. N. Quirk, Puragra Guhathakurta +9
We present initial results from a large spectroscopic survey of stars throughout M33's stellar disk. We analyze a sample of 1667 red giant branch (RGB) stars extending to projected…
Elemental Abundances in M31: Gradients in the Giant Stellar Stream
Ivanna Escala, Karoline M. Gilbert, Jennifer Wojno +2
We analyze existing measurements of [Fe/H] and [/Fe] for individual red giant branch (RGB) stars in the Giant Stellar Stream (GSS) of M31 to determine whether spatial abundance…
Elemental Abundances in M31: Properties of the Inner Stellar Halo
Ivanna Escala, Evan N. Kirby, Karoline M. Gilbert +3
We present measurements of [Fe/H] and [/Fe] for 128 individual red giant branch stars (RGB) in the stellar halo of M31, including its Giant Stellar Stream (GSS), obtained using…
Elemental Abundances in M31: Iron and Alpha Element Abundances in M31's Outer Halo
Karoline M. Gilbert, Jennifer Wojno, Evan N. Kirby +4
We present [Fe/H] and [/Fe] abundances, derived using spectral synthesis techniques, for stars in M31's outer stellar halo. The 21 [Fe/H] measurements and 7 [/Fe] measurement…
The Bulge Radial Velocity Assay for RR Lyrae stars (BRAVA-RR) DR2: a Bimodal Bulge?
Andrea Kunder, Angeles Perez-Villegas, R. Michael Rich +11
Radial velocities of 2768 fundamental mode RR Lyrae stars (RRLs) toward the Southern Galactic bulge are presented, spanning the southern bulge from -8 < l < +8 and -3 < b <-6. Dist…
Elemental abundances in M31: [Fe/H] and [α/Fe] in M31 Dwarf Galaxies Using Coadded Spectra
Jennifer Wojno, Karoline M. Gilbert, Evan N. Kirby +5
We present chemical abundances of red giant branch (RGB) stars in the dwarf spheroidal (dSph) satellite system of Andromeda (M31), using spectral synthesis of medium resolution (R…
The Sixth Data Release of the Radial Velocity Experiment (RAVE) -- II: Stellar Atmospheric Parameters, Chemical Abundances and Distances
Matthias Steinmetz, Guillaume Guiglion, Paul J. McMillan +58
We present part 2 of the 6th and final Data Release (DR6 or FDR) of the Radial Velocity Experiment (RAVE), a magnitude-limited (9<I<12) spectroscopic survey of Galactic stars rando…
The Sixth Data Release of the Radial Velocity Experiment (RAVE) -- I: Survey Description, Spectra and Radial Velocities
Matthias Steinmetz, Gal Matijevic, Harry Enke +59
The Radial Velocity Experiment (RAVE) is a magnitude-limited (9<I<12) spectroscopic survey of Galactic stars randomly selected in the southern hemisphere. The RAVE medium-resolutio…
Elemental Abundances in M31: The Kinematics and Chemical Evolution of Dwarf Spheroidal Satellite Galaxies
Evan N. Kirby, Karoline M. Gilbert, Ivanna Escala +4
We present deep spectroscopy from Keck/DEIMOS of Andromeda I, III, V, VII, and X, all of which are dwarf spheroidal satellites of M31. The sample includes 256 spectroscopic members…
Elemental Abundances in M31: A Comparative Analysis of Iron and Alpha Element Abundances in the Outer Disk, Giant Stellar Stream, and Inner Halo of M31
Ivanna Escala, Karoline M. Gilbert, Evan N. Kirby +3
We measured [Fe/H] and [/Fe] using spectral synthesis of low-resolution stellar spectroscopy for 70 individual red giant branch stars across four fields spanning the outer disk,…
Elemental Abundances in M31: First Alpha and Iron Abundance Measurements in M31's Giant Stellar Stream
Karoline M. Gilbert, Evan N. Kirby, Ivanna Escala +3
We present the first measurements of [Fe/H] and [/Fe] abundances, obtained using spectral synthesis modeling, for red giant branch stars in M31's giant stellar stream. The spect…
Astro2020 Science White Paper: Construction of an L* Galaxy: the Transformative Power of Wide Fields for Revealing the Past, Present and Future of the Great Andromeda System
Karoline M. Gilbert, Erik J. Tollerud, Jay Anderson +34
The Great Andromeda Galaxy (M31) is the nexus of the near-far galaxy evolution connection and a principal data point for near-field cosmology. Due to its proximity (780 kpc), M31 c…
Elemental Abundances in M31: Alpha and Iron Element Abundances from Low-Resolution Resolved Stellar Spectroscopy in the Stellar Halo
Ivanna Escala, Evan N. Kirby, Karoline M. Gilbert +2
Measurements of [Fe/H] and [/Fe] can probe the minor merging history of a galaxy, providing a direct way to test the hierarchical assembly paradigm. While measurements of [/F…
Correlations between age, kinematics, and chemistry as seen by the RAVE survey
Jennifer Wojno, Georges Kordopatis, Matthias Steinmetz +20
We explore the connections between stellar age, chemistry, and kinematics across a Galactocentric distance of , using a sample of inte…
Is the Milky Way still breathing? RAVE-Gaia streaming motions
I. Carrillo, I. Minchev, G. Kordopatis +26
We use data from the Radial Velocity Experiment (RAVE) and the Tycho-Gaia astrometric solution catalogue (TGAS) to compute the velocity fields yielded by the radial (VR), azimuthal…
Spectroscopic confirmation of the low-latitude object FSR 1716 as an old globular cluster
Andreas Koch, Andrea Kunder, Jennifer Wojno
Star clusters are invaluable tracers of the Galactic components and the discovery and characterization of low-mass stellar systems can be used to appraise their prevailing disrupti…
Improved distances and ages for stars common to TGAS and RAVE
Paul J. McMillan, Georges Kordopatis, Andrea Kunder +15
We combine parallaxes from the first Gaia data release with the spectrophotometric distance estimation framework for stars in the fifth RAVE survey data release. The combined dista…
Chromospherically Active Stars in the RAVE Survey. II. Young dwarfs in the Solar neighborhood
M. Žerjal, T. Zwitter, G. Matijevič +19
A large sample of over 38,000 chromospherically active candidate solar-like stars and cooler dwarfs from the RAVE survey is addressed in this paper. An improved activity identifica…
The selection function of the RAVE survey
Jennifer Wojno, Georges Kordopatis, Tilmann Piffl +23
We characterize the selection function of RAVE using 2MASS as our underlying population, which we assume represents all stars which could have potentially been observed. We evaluat…