Search Publications
A Comprehensive Kinematic Model of the Large Magellanic Cloud Disk from Star Clusters and Field Stars using Gaia DR3: Tracing the Disk Characteristics, Rotation, Bar, and Outliers
Subramanian, S.; Subramaniam, A.; Dhanush, S. R.
The internal kinematics of the Large Magellanic Cloud (LMC) disk have been modeled by several studies using different tracers with varying coverage, resulting in a range of parameters. Here, we model the LMC disk using 1705 star clusters and field stars, based on a robust Markov Chain Monte Carlo method, using Gaia DR3 data. The dependency of the …
A Coronal Mass Ejection Impacting Parker Solar Probe at 14 Solar Radii
Vourlidas, Angelos; Stenborg, Guillermo; Nieves-Chinchilla, Teresa +2 more
The relationship between CME properties in the corona and their interplanetary counterparts is not well understood. Until recently, a wide spatial gap existed between the two regions, which prevented us from disentangling the spatial and temporal evolution of CMEs. NASA's Parker Solar Probe (PSP) has imaged multiple CMEs since its launch in 2018, …
Self-similar Buildup and Inside-out Growth: Tracing the Evolution of Intermediate-to-high-mass Star-forming Galaxies since z = 2
Tacchella, Sandro; Mosleh, Moein; Hosseini-ShahiSavandi, S. Zahra +1 more
We aim to discern scenarios of structural evolution of intermediate-to-high-mass star-forming galaxies (SFGs) since cosmic noon by comparing their stellar mass profiles with present-day stellar masses of
The Age-dependent Vertical Actions of Young Stars in the Galaxy
Xiang, Maosheng; Rix, Hans-Walter; Zari, Eleonora +2 more
Stars in the Galactic disk are born on cold, nearly circular orbits with small vertical excursions. After their birth, their orbits evolve, driven by small- or large-scale perturbations in the Galactic disk's gravitational potential. Here, we study the vertical motions of young stars over their first few orbital periods, using a sample of OBA star…
The Molecular Exoskeleton of the Ring-like Planetary Nebula NGC 3132
Wilner, David J.; De Marco, Orsola; Kastner, Joel H. +4 more
We present Submillimeter Array (SMA) mapping of 12CO J = 2 → 1, 13CO J = 2 → 1, and CN N = 2 → 1 emission from the ring-like planetary nebula NGC 3132, one of the subjects of JWST Early Release Observation near-infrared imaging. The ∼5″ resolution SMA data demonstrate that the Southern Ring's main, bright, molecule-rich ring …
Multiwavelength Spectral Energy Distribution Analysis of X-Ray Selected Active Galactic Nuclei at z = 0.2–0.8 in the Stripe 82 Region
Ueda, Yoshihiro; Toba, Yoshiki; Li, Junyao +3 more
We perform a systematic, multiwavelength spectral energy distribution (SED) analysis of X-ray detected active galactic nuclei (AGNs) at z = 0.2–0.8 with Sloan Digital Sky Survey (SDSS) counterparts in the Stripe 82 region, consisting of 60 type 1 and 137 type 2 AGNs covering a 2–10 keV luminosity range of $41.6\lt \mathrm{log}\ {L}_{{\rm{x}}}\lt 4…
Updated Kinematics of the Radcliffe Wave: Nonsynchronous, Dipole-like Vertical Oscillations
Fang, Min; Li, Guang-Xing; Wang, Junzhi +6 more
The kinematic information of the Radcliffe wave (RW) is essential for determining its existence and gaining insights into its origin and evolution. In this work, we present an accurate measurement of the vertical velocity (V Z ) of the RW by incorporating the radial velocity (RV) measures through two methods, which is crucial but was n…
Constraints on Primordial Magnetic Fields from High Redshift Stellar Mass Density
Li, Shang; Zhang, Qile; Tan, Xiu-Hui +1 more
Primordial magnetic fields (PMFs) play a pivotal role in influencing small-scale fluctuations within the primordial density field, thereby enhancing the matter power spectrum within the context of the ΛCDM model at small scales. These amplified fluctuations accelerate the early formation of galactic halos and stars, which can be observed through a…
Evolved Massive Stars at Low Metallicity. VII. The Lower Mass Limit of the Red Supergiant Population in the Large Magellanic Cloud
Tian, Hao; Yang, Ming; Gao, Jian +8 more
The precise definition of the lower mass limit of red supergiant stars (RSGs) is an open question in astrophysics and does not attract much attention. Here, we assemble a spectroscopic evolved cool star sample with 6602 targets, including RSGs, asymptotic giant branch stars, and red giant branch stars, in the Large Magellanic Cloud based on Gaia D…
The Cosmic Ultraviolet Baryon Survey (CUBS). VIII. Group Environment of the Most Luminous Quasars at z ≈ 1
Johnson, Sean D.; Petitjean, Patrick; Zahedy, Fakhri S. +11 more
We investigate the group-scale environment of 15 luminous quasars (luminosity L 3000 > 1046 erg s‑1) from the Cosmic Ultraviolet Baryon Survey (CUBS) at redshift z ≈ 1. Using the Multi Unit Spectroscopic Explorer integral field spectrograph on the Very Large Telescope, we conduct a deep galaxy redshift survey in…