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An ALMA view of 11 dusty star-forming galaxies at the peak of cosmic star formation history
Cimatti, A.; Pozzi, F.; Massardi, M. +10 more
We present the ALMA view of 11 main-sequence dusty star-forming galaxies (DSFGs) (sub-)millimetre selected in the Great Observatories Origins Survey South (GOODS-S) field and spectroscopically confirmed to be at the peak of cosmic star formation history (z ~ 2). Our study combines the analysis of galaxy spectral energy distribution with ALMA conti…
Spectroscopic evolution of massive stars near the main sequence at low metallicity
Martins, F.; Palacios, A.
Context. The evolution of massive stars is not fully understood. Several physical processes affect their life and death, with major consequences on the progenitors of core-collapse supernovae, long-soft gamma-ray bursts, and compact-object mergers leading to gravitational wave emission.
Aims: In this context, our aim is to make the prediction…
The effect of active galactic nuclei on the cold interstellar medium in distant star-forming galaxies
Daddi, E.; Gómez-Guijarro, C.; Magdis, G. E. +17 more
In the framework of a systematic study with the ALMA interferometer of IR-selected main-sequence and starburst galaxies at z ∼ 1 − 1.7 at typical ∼1″ resolution, we report on the effects of mid-IR- and X-ray-detected active galactic nuclei (AGN) on the reservoirs and excitation of molecular gas in a sample of 55 objects. We find widespread detecta…
Probing the structure of a massive filament: ArTéMiS 350 and 450 µm mapping of the integral-shaped filament in Orion A
Rodriguez, L.; Roussel, H.; André, Ph. +18 more
Context. The Orion molecular cloud is the closest region of high-mass star formation. It is an ideal target for investigating the detailed structure of massive star-forming filaments at high resolution and the relevance of the filament paradigm for the earliest stages of intermediate- to high-mass star formation.
Aims: Within the Orion A mole…
Planet Occurrence Rate Correlated to Stellar Dynamical History: Evidence from Kepler and Gaia
Zhou, Ji-Lin; Dai, Yuan-Zhe; Liu, Hui-Gen +1 more
The dynamical history of stars influences the formation and evolution of planets significantly. To explore the influence of dynamical history on the planet formation and evolution using observations, we assume stars that experienced significantly different dynamical histories tend to have different relative velocities. Utilizing the accurate Gaia-…
Whistler instability driven by the sunward electron deficit in the solar wind. High-cadence Solar Orbiter observations
Lewis, G. R.; Kataria, D. O.; Livi, S. +19 more
Context. Solar wind electrons play an important role in the energy balance of the solar wind acceleration by carrying energy into interplanetary space in the form of electron heat flux. The heat flux is stored in the complex electron velocity distribution functions (VDFs) shaped by expansion, Coulomb collisions, and field-particle interactions.
A proto-pseudobulge in ESO 320-G030 fed by a massive molecular inflow driven by a nuclear bar
Smith, Howard A.; Colina, Luis; Alonso-Herrero, Almudena +10 more
Galaxies with nuclear bars are believed to efficiently drive gas inward, generating a nuclear starburst and possibly an active galactic nucleus. We confirm this scenario for the isolated, double-barred, luminous infrared galaxy ESO 320-G030 based on an analysis of Herschel and ALMA spectroscopic observations. Herschel/PACS and SPIRE observations o…
NICER Discovery of Millisecond X-Ray Pulsations and an Ultracompact Orbit in IGR J17494-3030
Chakrabarty, Deepto; Ray, Paul S.; Wolff, Michael T. +11 more
We report the detection of 376.05 Hz (2.66 ms) coherent X-ray pulsations in NICER observations of a transient outburst of the low-mass X-ray binary IGR J17494-3030 in 2020 October/November. The system is an accreting millisecond X-ray pulsar in a 75-minute ultracompact binary. The mass donor is most likely a ≃0.02 M⊙ finite-entropy whit…
CLUMP-3D: the lack of non-thermal motions in galaxy cluster cores
Cui, Weiguang; Umetsu, Keiichi; Sereno, Mauro +5 more
We report the non-thermal pressure fraction (Pnt/Ptot) obtained from a three-dimensional triaxial analysis of 16 galaxy clusters in the CLASH sample using gravitational lensing (GL) data primarily from Subaru and HST, X-ray spectroscopic imaging from Chandra, and Sunyaev-Zel'dovich effect (SZE) data from Planck and Bolocam. O…
Exploring HNC and HCN line emission as probes of the protoplanetary disk temperature
Bosman, Arthur D.; Guzmán, Viviana V.; Long, Feng +6 more
Context. The distributions and abundances of molecules in protoplanetary disks are powerful tracers of the physical and chemical disk structures. The abundance ratios of HCN and its isomer HNC are known to be sensitive to gas temperature. Their line ratios might therefore offer a unique opportunity to probe the properties of the emitting gas.
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