Via Machinae: Searching for Stellar Streams using Unsupervised Machine Learning

Kavli Affiliate: Lina Necib | First 5 Authors: David Shih, Matthew R. Buckley, Lina Necib, John Tamanas, | Summary: We develop a new machine learning algorithm, Via Machinae, to identify cold stellar streams in data from the Gaia telescope. Via Machinae is based on ANODE, a general method that uses conditional density estimation and sideband […]


Continue.. Via Machinae: Searching for Stellar Streams using Unsupervised Machine Learning

High redshift JWST predictions from IllustrisTNG: III. Infrared luminosity functions, obscured star formation and dust temperature of high-redshift galaxies

Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Xuejian Shen, Mark Vogelsberger, Dylan Nelson, Sandro Tacchella, Lars Hernquist | Summary: We post-process galaxies in the IllustrisTNG simulations with SKIRT radiative transfer calculations to make predictions for the rest-frame near-infrared (NIR) and far-infrared (FIR) properties of galaxies at $zgeq 4$. The rest-frame $K$- and $z$-band galaxy […]


Continue.. High redshift JWST predictions from IllustrisTNG: III. Infrared luminosity functions, obscured star formation and dust temperature of high-redshift galaxies

Effects of model incompleteness on the drift-scan calibration of radio telescopes

Kavli Affiliate: Max Tegmark | First 5 Authors: Bharat K. Gehlot, Daniel C. Jacobs, Judd D. Bowman, Nivedita Mahesh, Steven G. Murray | Summary: Precision calibration poses challenges to experiments probing the redshifted 21-cm signal of neutral hydrogen from the Cosmic Dawn and Epoch of Reionization (z~30-6). In both interferometric and global signal experiments, systematic […]


Continue.. Effects of model incompleteness on the drift-scan calibration of radio telescopes

TOI-1431b/MASCARA-5b: A Highly Irradiated Ultra-Hot Jupiter Orbiting One of the Hottest & Brightest Known Exoplanet Host Stars

Kavli Affiliate: Alan M. Levine | First 5 Authors: Brett Christopher Addison, Emil Knudstrup, Ian Wong, Guillaume Hebrard, Patrick Dorval | Summary: We present the discovery of a highly irradiated and moderately inflated ultra-hot Jupiter, TOI-1431b/MASCARA-5b (HD 201033b), first detected by NASA’s Transiting Exoplanet Survey Satellite mission (TESS) and the Multi-site All-Sky CAmeRA (MASCARA). The […]


Continue.. TOI-1431b/MASCARA-5b: A Highly Irradiated Ultra-Hot Jupiter Orbiting One of the Hottest & Brightest Known Exoplanet Host Stars

Hermeian haloes: Field haloes that interacted with both the Milky Way and M31

Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Oliver Newton, Noam I. Libeskind, Alexander Knebe, Miguel A. Sánchez-Conde, Jenny G. Sorce | Summary: The Local Group is a unique environment in which to study the astrophysics of galaxy formation. The proximity of the Milky Way and M31 enhances the frequency of interactions of the low-mass […]


Continue.. Hermeian haloes: Field haloes that interacted with both the Milky Way and M31

Validation of the HERA Phase I Epoch of Reionization 21 cm Power Spectrum Software Pipeline

Kavli Affiliate: Jacqueline N. Hewitt | First 5 Authors: James E. Aguirre, Steven G. Murray, Robert Pascua, Zachary E. Martinot, Jacob Burba | Summary: We describe the validation of the HERA Phase I software pipeline by a series of modular tests, building up to an end-to-end simulation. The philosophy of this approach is to validate […]


Continue.. Validation of the HERA Phase I Epoch of Reionization 21 cm Power Spectrum Software Pipeline

FastEMRIWaveforms: New tools for millihertz gravitational-wave data analysis

Kavli Affiliate: Scott A. Hughes | First 5 Authors: Michael L. Katz, Alvin J. K. Chua, Lorenzo Speri, Niels Warburton, Scott A. Hughes | Summary: We present the FastEMRIWaveforms (FEW) package, a collection of tools to build and analyze extreme mass ratio inspiral (EMRI) waveforms. Here, we expand on the Physical Review Letter that introduced […]


Continue.. FastEMRIWaveforms: New tools for millihertz gravitational-wave data analysis

A Real Time Processing System for Big Data in Astronomy: Applications to HERA

Kavli Affiliate: Jacqueline N. Hewitt | First 5 Authors: Paul La Plante, Peter K. G. Williams, Matthew Kolopanis, Joshua S. Dillon, Adam P. Beardsley | Summary: As current- and next-generation astronomical instruments come online, they will generate an unprecedented deluge of data. Analyzing these data in real time presents unique conceptual and computational challenges, and […]


Continue.. A Real Time Processing System for Big Data in Astronomy: Applications to HERA

Warm Jupiters in TESS Full-Frame Images: A Catalog and Observed Eccentricity Distribution for Year 1

Kavli Affiliate: Edward H. Morgan | First 5 Authors: Jiayin Dong, Chelsea X. Huang, Rebekah I. Dawson, Daniel Foreman-Mackey, Karen A. Collins | Summary: Warm Jupiters — defined here as planets larger than 6 Earth radii with orbital periods of 8–200 days — are a key missing piece in our understanding of how planetary systems […]


Continue.. Warm Jupiters in TESS Full-Frame Images: A Catalog and Observed Eccentricity Distribution for Year 1

Stellar Metallicities from SkyMapper Photometry II: Precise photometric metallicities of $sim$280,000 giant stars with [Fe/H] $< -0.75$ in the Milky Way

Kavli Affiliate: Anna Frebel | First 5 Authors: Anirudh Chiti, Anna Frebel, Mohammad K. Mardini, Tatsuya W. Daniel, Xiaowei Ou | Summary: The Milky Way’s metal-poor stars are nearby ancient objects that are used to study early chemical evolution and the assembly and structure of the Milky Way. Here we present reliable metallicities of $sim280,000$ […]


Continue.. Stellar Metallicities from SkyMapper Photometry II: Precise photometric metallicities of $sim$280,000 giant stars with [Fe/H] $< -0.75$ in the Milky Way