217 citations · 1.8k across the 29 of their papers we have counts for
13 papers · 1 filter
The optical photometric variability of Herbig Ae/Be stars from TESS
Ann Marie Cody, Lynne A. Hillenbrand, Shreya Chandragiri +1
We have carried out a photometric time domain study of 188 intermediate-mass young stars observed in Full Frame Image mode with the TESS satellite over the first 3.3 years of its m…
Separating Photospheric and Starspot Magnetic Fields in Pre-Main-Sequence Stars Using IGRINS Spectroscopy
Facundo Pérez Paolino, Lynne Hillenbrand, Jeff Bary
Magnetic fields in pre main sequence stars regulate angular momentum evolution, drive magnetic activity, and modify stellar structure, yet their surface distributions remain poorly…
Starspots as an Explanation for the Mysterious IYJ Continuum Excess Emission in Classical T Tauri Stars
Facundo Pérez Paolino, Jeff Bary, Lynne Hillenbrand +2
An accurate estimation of the continuum excess emission from accretion spots and inner circumstellar disk regions is crucial for a proper derivation of fundamental stellar paramete…
The Effect of Starspots on Spectroscopic Age and Mass Estimates of Non-Accreting T~Tauri Stars in the Taurus-Auriga Star Forming Region
Facundo Pérez Paolino, Jeffrey S. Bary, Lynne A. Hillenbrand +1
Accurate age and mass determinations for young pre-main sequence stars are made challenging by the presence of large-scale starspots. We present results from a near-infrared spectr…
ABYSS II: Identification of young stars in optical SDSS spectra and their properties
Serat Saad, Kaitlyn Lane, Marina Kounkel +9
We developed a tool that measures equivalent widths of various lines in low resolution optical spectra, and it was applied to stellar spectra obtained as part of SDSS-V and LAMOST…
X-Shooter survey of disk accretion in Upper Scorpius I. Very high accretion rates at age>5 Myr
C. F. Manara, A. Natta, G. P. Rosotti +14
Determining the mechanisms that drive the evolution of protoplanetary disks is a necessary step to understand how planets form. Here we measured the mass accretion rate for young s…
Rotation in the Pleiades with K2: II. Multi-Period Stars
L. M. Rebull, J. R. Stauffer, J. Bouvier +15
We use K2 to continue the exploration of the distribution of rotation periods in Pleiades that we began in Paper I. We have discovered complicated multi-period behavior in Pleiades…
Constraining the Sub-AU-Scale Distribution of Hydrogen and Carbon Monoxide Gas around Young Stars with the Keck Interferometer
J. A. Eisner, L. A. Hillenbrand, Jordan M. Stone
We present Keck Interferometer observations of T Tauri and Herbig Ae/Be stars with a spatial resolution of a few milliarcseconds and a spectral resolution of ~2000. Our observation…
The Hubble Space Telescope Treasury Program on the Orion Nebula Cluster
M. Robberto, D. R. Soderblom, E. Bergeron +27
The Hubble Space Telescope (HST) Treasury Program on the Orion Nebula Cluster has used 104 orbits of HST time to image the Great Orion Nebula region with the Advanced Camera for Su…
Mapping the Shores of the Brown Dwarf Desert III: Young Moving Groups
Thomas M. Evans, Michael J. Ireland, Adam L. Kraus +6
We present the results of an aperture masking interferometry survey for substellar companions around 67 members of the young (~8-200Myr) nearby (~5-86pc) AB Doradus, Beta Pictoris,…
Two Wide Planetary-Mass Companions to Solar-Type Stars in Upper Scorpius
Michael J. Ireland, Adam L. Kraus, Frantz Martinache +2
At wide separations, planetary-mass and brown dwarf companions to solar type stars occupy a curious region of parameters space not obviously linked to binary star formation or sola…
Ultraviolet-Selected Field and Pre-Main-Sequence Stars Towards Taurus and Upper Scorpius
Krzysztof Findeisen, Lynne Hillenbrand
We have carried out a Galaxy Evolution Explorer (GALEX) Cycle 1 guest investigator program covering 56 square degrees near the Taurus T association and 12 square degrees along the…
First L-band Interferometric Observations of a Young Stellar Object: Probing the Circumstellar Environment of MWC 419
S. Ragland, R. L. Akeson, T. Armandroff +7
We present spatially-resolved K- and L-band spectra (at spectral resolution R = 230 and R = 60, respectively) of MWC 419, a Herbig Ae/Be star. The data were obtained simultaneously…