Kavli Affiliate: Michael McDonald | First 5 Authors: Taweewat Somboonpanyakul, Michael McDonald, Massimo Gaspari, Brian Stalder, Antony A. Stark | Summary: We present optical follow-up observations for candidate clusters in the Clusters Hiding in Plain Sight (CHiPS) survey, which is designed to find new galaxy clusters with extreme central galaxies that were misidentified as bright […]
Kavli Affiliate: Alan M. Levine | First 5 Authors: Joseph E. Rodriguez, Samuel N. Quinn, George Zhou, Andrew Vanderburg, Louise D. Nielsen | Summary: We present the discovery and characterization of five hot and warm Jupiters — TOI-628 b (TIC 281408474; HD 288842), TOI-640 b (TIC 147977348), TOI-1333 b (TIC 395171208, BD+47 3521A), TOI-1478 b […]
Kavli Affiliate: Anna Frebel | First 5 Authors: Dmitrii Gudin, Derek Shank, Timothy C. Beers, Zhen Yuan, Guilherme Limberg | Summary: We derive dynamical parameters for a large sample of 446 $r$-process-enhanced (RPE) metal-poor stars in the halo and disk systems of the Milky Way, based on data releases from the $R$-Process Alliance, supplemented by […]
Kavli Affiliate: Deepto Chakrabarty | First 5 Authors: Peter Bult, Diego Altamirano, Zaven Arzoumanian, Anna V. Bilous, Deepto Chakrabarty | Summary: In this work we report on observations with the Neutron Star Interior Composition Explorer of the known neutron star X-ray transient XTE J1739-285. We observed the source in 2020 February and March, finding it […]
Kavli Affiliate: Erin Kara | First 5 Authors: Michael McDonald, Brian R. McNamara, Michael S. Calzadilla, Chien-Ting Chen, Massimo Gaspari | Summary: We present a study of the relationship between black hole accretion rate (BHAR) and star formation rate (SFR) in a sample of giant elliptical galaxies. These galaxies, which live at the centers of […]
Kavli Affiliate: Richard Foster | First 5 Authors: Tanmoy Chattopadhyay, Sven Herrmann, Steven Allen, Jack Hirschman, Glenn Morris | Summary: X-ray Charge Coupled Devices (CCDs) have been the workhorse for soft X-ray astronomical instruments for the past quarter century. They provide broad energy response, extremely low electronic read noise, and good energy resolution in soft […]
Kavli Affiliate: Rainer Weiss | First 5 Authors: Jonathan W. Richardson, Ohkyung Kwon, H. Richard Gustafson, Craig Hogan, Brittany L. Kamai | Summary: Precision measurements are reported of the cross-spectrum of rotationally-induced differential position displacements in a pair of colocated 39 m long, high power Michelson interferometers. One arm of each interferometer is bent $90^{circ}$ […]
Kavli Affiliate: Michael M. Fausnaugh | First 5 Authors: Wenlong Yuan, Lucas M. Macri, Bradley M. Peterson, Adam G. Riess, Michael M. Fausnaugh | Summary: We derive a distance of $D = 16.6 pm 0.3$~Mpc ($mu=31.10pm0.04$~mag) to the archetypal narrow-line Seyfert 1 galaxy NGC 4051 based on Cepheid Period–Luminosity relations and new Hubble Space Telescope […]
Kavli Affiliate: Eric Miller | First 5 Authors: Arnab Sarkar, Yuanyuan Su, Scott Randall, Fabio Gastaldello, Isabella Trierweiler | Summary: We present joint Suzaku and Chandra observations of MKW4. With a global temperature of 1.6 keV, MKW4 is one of the smallest galaxy groups that have been mapped in X-rays out to the virial radius. […]
Kavli Affiliate: Ralf K. Heilmann | First 5 Authors: Ralf K. Heilmann, Alexander R. Bruccoleri, Jungki Song, Matthew T. Cook, James A. Gregory | Summary: High-resolution ($R = lambda /Delta lambda > 2000$) x-ray absorption and emission line spectroscopy in the soft x-ray band is a crucial diagnostic for the exploration of the properties of […]