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The ALPINE-ALMA [CII] survey: The population of [CII]-undetected galaxies and their role in the L[CII]-SFR relation
Schaerer, D.; Béthermin, M.; Silverman, J. D. +22 more
The [CII] 158 µm emission line represents one of the most profitable tools for the investigation of the high-redshift galaxies in the early Universe so far. Being one of the brightest cooling lines in the rest-frame far-infrared regime of star-forming galaxies, it has been successfully exploited as a tracer of the star-formation rate (SFR) i…
An Eccentric Brown Dwarf Eclipsing an M dwarf
Cochran, William D.; Mahadevan, Suvrath; Monson, Andrew +16 more
We report the discovery of an M = 67 ± 2M J brown dwarf transiting the early M dwarf TOI-2119 on an eccentric orbit (e = 0.3362 ± 0.0005) at an orbital period of 7.200861 ± 0.000005 days. We confirm the brown dwarf nature of the transiting companion using a combination of ground-based and space-based photometry and high-precision veloci…
The MASSIVE Survey. XVII. A Triaxial Orbit-based Determination of the Black Hole Mass and Intrinsic Shape of Elliptical Galaxy NGC 2693
Ma, Chung-Pei; Greene, Jenny E.; Blakeslee, John P. +5 more
We present a stellar dynamical mass measurement of a newly detected supermassive black hole (SMBH) at the center of the fast-rotating, massive elliptical galaxy NGC 2693 as part of the MASSIVE survey. We combine high signal-to-noise ratio integral field spectroscopy (IFS) from the Gemini Multi-Object Spectrograph with wide-field data from the Mitc…
Quasiperiodic Behavior in the γ-Ray Light Curve of the Blazar PKS 0405-385
Gong, Yunlu; Yuan, Min; Yi, Tingfeng +3 more
We analyze the quasiperiodic oscillation (QPO) of the historical light curve of flat-spectrum radio quasars PKS 0405-385 detected by the Fermi Large Area Telescope from 2008 August to 2021 November. To identify and determine the QPO signal of PKS 0405-385 in the γ-ray light curve, we use four time series analysis techniques based on frequency and …
Constraints on the Galactic Centre environment from Gaia hyper-velocity stars
Rossi, E. M.; Marchetti, T.; Evans, F. A.
Following a dynamical encounter with Sgr A*, binaries in the Galactic Centre (GC) can be tidally separated and one member star ejected as a hyper-velocity star (HVS) with a velocity beyond the escape speed of the Milky Way. As GC-born objects located in more observationally accessible regions of the sky, HVSs offer insight into the stellar populat…
What Are Those Tiny Things? A First Study of Compact Star Clusters in the SMACS0723 Field with JWST
Brammer, Gabriel; Toft, Sune; Faisst, Andreas L. +1 more
We use the unprecedented resolution and depth of the JWST NIRCam Early Release Observations at 1-5 µm to study the stellar mass, age, and metallicity of compact star clusters in the neighborhood of the host galaxies in the SMACS J0723.3-7327 galaxy cluster field at z = 0.39. The measured colors of these star clusters show a similar distribut…
MICROSCOPE's constraint on a short-range fifth force
Bergé, Joel; Pernot-Borràs, Martin; Uzan, Jean-Philippe +5 more
The MICROSCOPE experiment was designed to test the weak equivalence principle in space, by comparing the low-frequency dynamics of cylindrical 'free-falling' test masses controlled by electrostatic forces. We use data taken during technical sessions aimed at estimating the electrostatic stiffness of MICROSCOPE's sensors to constrain a short-range …
A Library of Synthetic X-Ray Spectra for Fitting Tidal Disruption Events
Wen, Sixiang; Jonker, Peter G.; Stone, Nicholas C. +2 more
We present a tabulated version of our slim-disk model for fitting tidal disruption events (TDEs). We create a synthetic X-ray spectral library by ray-tracing stationary general relativistic slim disks and including gravitational redshift, Doppler, and lensing effects self-consistently. We introduce the library to reduce computational expense and i…
Discovery of Extended Structure Around Open Cluster COIN-Gaia 13 Based on Gaia EDR3
Chen, Li; Zhong, Jing; Li, Jing +2 more
COIN-Gaia 13 is a newly discovered open cluster revealed by Gaia DR2 data. It is a nearby open cluster with a distance of about 513 pc. Combined with the five-dimensional astrometric data of Gaia EDR3 with higher accuracy, we use the membership assignment algorithm (pyUPMASK) to determine the membership of COIN-Gaia 13 in a large extended spatial …
Bayesian Solar Wind Modeling with Pulsar Timing Arrays
Ransom, Scott M.; Zhu, Weiwei; Ray, Paul S. +29 more
Using Bayesian analyses we study the solar electron density with the NANOGrav 11 yr pulsar timing array (PTA) data set. Our model of the solar wind is incorporated into a global fit starting from pulse times of arrival. We introduce new tools developed for this global fit, including analytic expressions for solar electron column densities and open…