Search Publications
Giant Outer Transiting Exoplanet Mass (GOT 'EM) Survey. IV. Long-term Doppler Spectroscopy for 11 Stars Thought to Host Cool Giant Exoplanets
Mayo, Andrew W.; Rice, Malena; Kane, Stephen R. +29 more
Discovering and characterizing exoplanets at the outer edge of the transit method's sensitivity has proven challenging owing to geometric biases and the practical difficulties associated with acquiring long observational baselines. Nonetheless, a sample of giant exoplanets on orbits longer than 100 days has been identified by transit hunting missi…
Comparison of the On-disk Apparent Current Sheets with the Limb Ones
Zhang, Jun; Ding, Tao
Based on observations from the Solar Dynamics Observatory (SDO) and the Solar and Heliospheric Observatory (SOHO), we investigate 30 apparent current sheets during 1999–2021, including 10 on-disk and 8 limb ones from the SDO, as well as 12 limb ones from the SOHO. Each on-disk current sheet is formed among an X-type configuration consisting of two…
TOI-2374 b and TOI-3071 b: two metal-rich sub-Saturns well within the Neptunian desert
Butler, R. Paul; Bieryla, Allyson; Fernández Fernández, Jorge +40 more
We report the discovery of two transiting planets detected by the Transiting Exoplanet Survey Satellite (TESS), TOI-2374 b and TOI-3071 b, orbiting a K5V and an F8V star, respectively, with periods of 4.31 and 1.27 d, respectively. We confirm and characterize these two planets with a variety of ground-based and follow-up observations, including ph…
Firmamento: A Multimessenger Astronomy Tool for Citizen and Professional Scientists
Giommi, Paolo; Doro, Michele; Pollock, A. M. T. +12 more
Firmamento (https://firmamento.hosting.nyu.edu) is a new-concept, web-based, and mobile-friendly data analysis tool dedicated to multifrequency/multimessenger emitters, as exemplified by blazars. Although initially intended to support a citizen researcher project at New York University–Abu Dhabi, Firmamento has evolved to be a valuable tool for pr…
Identifying synergies between VLBI and STIX imaging
Massa, Paolo; Müller, Hendrik; Mus, Alejandro +2 more
Context. Reconstructing an image from noisy, sparsely sampled Fourier data is an ill-posed inverse problem that occurs in a variety of subjects within science, including data analysis for Very Long Baseline Interferometry (VLBI) and the Spectrometer/Telescope for Imaging X-rays (STIX) with respect to solar observations. The need for high-resolutio…
The 3D Kinematics of the Orion Nebula Cluster. II. Mass-dependent Kinematics of the Inner Cluster
Lu, Jessica R.; Kim, Dongwon; Hsu, Chih-Chun +3 more
We present the kinematic analysis of 246 stars within $4^{\prime} $ from the center of Orion Nebula Cluster (ONC), the closest massive star cluster with active star formation across the full mass range, which provides valuable insights in the formation and evolution of star cluster on an individual-star basis. High-precision radial velocities and …
Characteristics and energy flux distributions of decayless transverse oscillations depending on coronal regions
Van Doorsselaere, Tom; Lim, Daye; Berghmans, David +1 more
Context. It has been proposed that the slope (δ) of the power-law distribution between the energy flux and oscillation frequency could determine whether high-frequency transverse oscillations make a dominant contribution to the heating (δ < 1). A meta-analysis of decayless transverse oscillations revealed that high-frequency oscillations potent…
Precise Fourier parameters of Cepheid radial velocity curves: Towards refining the Hertzsprung progression models
Smolec, R.; Moskalik, P.; Gorynya, N. A. +3 more
Context. Radial velocity (RV) curves of Classical Cepheids allow precise determination of the resonant periods, which in turn help to constrain fundamental parameters of these stars. The RV curves of Cepheids are also useful for identifying their pulsation modes and for distance determination using the parallax-of-pulsation method. Aims. The prima…
The largest metallicity difference in twin systems: High-precision abundance analysis of the benchmark pair Krios and Kronos
Petrucci, R.; Jofré, E.; Jaque Arancibia, M. +7 more
Aims: We conducted a high-precision differential abundance analysis of the remarkable binary system HD 240429/30 (Krios and Kronos, respectively), whose difference in metallicity is one of the highest detected to date in systems with similar components (~0.20 dex). A condensation temperature TC trend study was performed to search f…
Quasar Sightline and Galaxy Evolution (QSAGE) - III. The mass-metallicity and fundamental metallicity relation of z ≈ 2.2 galaxies
Cullen, F.; Tejos, N.; Prochaska, J. X. +8 more
We present analysis of the mass-metallicity relation (MZR) for a sample of 67 [O III]-selected star-forming (SF) galaxies at a redshift range of z = 1.99-2.32 (zmed = 2.16) using Hubble Space Telescope Wide Field Camera 3 grism spectroscopy from the Quasar Sightline and Galaxy Evolution survey. Metallicities were determined using empiri…