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The ISM scaling relations in DustPedia late-type galaxies: A benchmark study for the Local Universe
Bianchi, S.; Fritz, J.; Madden, S. C. +18 more
Aims: The purpose of this work is the characterization of the main scaling relations between all of the interstellar medium (ISM) components, namely dust, atomic, molecular, and total gas, and gas-phase metallicity, as well as other galaxy properties, such as stellar mass (Mstar) and galaxy morphology, for late-type galaxies in the…
Megaparsec-scale structure around the protocluster core SPT2349-56 at z = 4.3
Greve, Thomas R.; Spilker, Justin; Aravena, Manuel +20 more
We present an extensive ALMA spectroscopic follow-up programme of the z = 4.3 structure SPT2349-56, one of the most actively star-forming protocluster cores known, to identify additional members using their [C II] 158 µm and CO(4-3) lines. In addition to robustly detecting the 14 previously published galaxies in this structure, we identify a…
SN 2019ehk: A Double-peaked Ca-rich Transient with Luminous X-Ray Emission and Shock-ionized Spectral Features
Pál, András; Kilpatrick, Charles D.; Coulter, David A. +64 more
We present panchromatic observations and modeling of the Calcium-rich supernova (SN) 2019ehk in the star-forming galaxy M100 (d ≈ 16.2 Mpc) starting 10 hr after explosion and continuing for ∼300 days. SN 2019ehk shows a double-peaked optical light curve peaking at t = 3 and 15 days. The first peak is coincident with luminous, rapidly decaying Swif…
Millimeter-wave Point Sources from the 2500 Square Degree SPT-SZ Survey: Catalog and Population Statistics
Chapman, S.; Bleem, L. E.; Stalder, B. +45 more
We present a catalog of emissive point sources detected in the SPT-SZ survey, a contiguous 2530 square degree area surveyed with the South Pole Telescope (SPT) from 2008-2011 in three bands centered at 95, 150, and 220 GHz. The catalog contains 4845 sources measured at a significance of 4.5σ or greater in at least one band, corresponding to detect…
Relating Streamer Flows to Density and Magnetic Structures at the Parker Solar Probe
Vourlidas, Angelos; Lavraud, Benoit; Poirier, Nicolas +34 more
The physical mechanisms that produce the slow solar wind are still highly debated. Parker Solar Probe's (PSP's) second solar encounter provided a new opportunity to relate in situ measurements of the nascent slow solar wind with white-light images of streamer flows. We exploit data taken by the Solar and Heliospheric Observatory, the Solar TErrest…
Massive Warm/Hot Galaxy Coronae. II. Isentropic Model
Faerman, Yakov; Sternberg, Amiel; McKee, Christopher F.
We construct a new analytic phenomenological model for the extended circumgalactic material (CGM) of L* galaxies. Our model reproduces the O VII/O VIII absorption observations of the Milky Way (MW) and the O VI measurements reported by the COS-Halos and eCGM surveys. The warm/hot gas is in hydrostatic equilibrium in an MW gravitational potential, …
MINESweeper: Spectrophotometric Modeling of Stars in the Gaia Era
Conroy, Charlie; Ting, Yuan-Sen; Cargile, Phillip A. +4 more
We present MINESweeper, a tool to measure stellar parameters by jointly fitting observed spectra and broadband photometry to model isochrones and spectral libraries. This approach enables the measurement of spectrophotometric distances, in addition to stellar parameters such as Teff, $\mathrm{log}g$, [Fe/H], [α/Fe], and radial velocity.…
The Rotation Curve, Mass Distribution, and Dark Matter Content of the Milky Way from Classical Cepheids
Bird, Sarah A.; Zhao, Gang; Flynn, Chris +1 more
With the increasing number of large stellar survey projects, the quality and quantity of excellent tracers for studying the Milky Way are rapidly growing, one of which is the classical Cepheids. Classical Cepheids are high-precision standard candles with very low typical uncertainties (<3%) available via the mid-infrared period-luminosity relat…
High molecular gas content and star formation rates in local galaxies that host quasars, outflows, and jets
Thomson, A. P.; Alexander, D. M.; Mainieri, V. +11 more
We use a sample of powerful $z\, \approx \, 0.1$ type 2 quasars ('obscured'; log [LAGN/erg s $^{-1}]\, \gtrsim \, 45$ ), which host kpc-scale ionized outflows and jets, to identify possible signatures of AGN feedback on the total molecular gas reservoirs of their host galaxies. Specifically, we present Atacama Pathfinder EXperiment (APE…
Testing the Kerr Black Hole Hypothesis Using X-Ray Reflection Spectroscopy and a Thin Disk Model with Finite Thickness
Tripathi, Ashutosh; Abdikamalov, Askar B.; Ayzenberg, Dimitry +5 more
X-ray reflection spectroscopy is a powerful tool for probing the strong gravity region of black holes and can be used for testing general relativity in the strong field regime. Simplifications of the available relativistic reflection models limit the capability of performing accurate measurements of the properties of black holes. In this paper, we…