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The TESS-Keck Survey. VI. Two Eccentric Sub-Neptunes Orbiting HIP-97166
Batalha, Natalie M.; Latham, David W.; Rice, Malena +45 more
We report the discovery of HIP-97166b (TOI-1255b), a transiting sub-Neptune on a 10.3 day orbit around a K0 dwarf 68 pc from Earth. This planet was identified in a systematic search of TESS Objects of Interest for planets with eccentric orbits, based on a mismatch between the observed transit duration and the expected duration for a circular orbit…
A multiwavelength analysis of the spiral arms in the protoplanetary disk around WaOph 6
Ménard, F.; Ginski, C.; Garufi, A. +23 more
Context. In recent years, protoplanetary disks with spiral structures have been detected in scattered light, millimeter continuum, and CO gas emission. The mechanisms causing these structures are still under debate. A popular scenario to drive the spiral arms is the one of a planet perturbing the material in the disk. However, if the disk is massi…
A microlensing search of 700 million VVV light curves
McGill, Peter; Smith, Leigh C.; Evans, N. Wyn +1 more
The VISTA Variables in the Via Lactea (VVV) survey and its extension have been monitoring about 560 deg2 of sky centred on the Galactic bulge and inner disc for nearly a decade. The photometric catalogue contains of order 10$^9$ sources monitored in the $K_s$ band down to 18 mag over hundreds of epochs from 2010 to 2019. Using these dat…
Single Image Super-Resolution Restoration of TGO CaSSIS Colour Images: Demonstration with Perseverance Rover Landing Site and Mars Science Targets
Tao, Yu; Muller, Jan-Peter; Conway, Susan J. +3 more
V-band photometry of asteroids from ASAS-SN. Finding asteroids with slow spin
Kochanek, C. S.; Stanek, K. Z.; Shappee, B. J. +3 more
We present V-band photometry of the 20 000 brightest asteroids using data from the All-Sky Automated Survey for Supernovae (ASAS-SN) between 2012 and 2018. We were able to apply the convex inversion method to more than 5000 asteroids with more than 60 good measurements in order to derive their sidereal rotation periods, spin axis orientations, and…
The episodic and multiscale Galactic Centre
Krabbe, Alfred; Bryant, Aaron
Within the central few hundred parsecs of the Milky Way, extending from longitude l = -1° to 1.5°, lies the Central Molecular Zone of the Galactic Centre. This extraordinary region is defined by a diverse variety of ISM features in numerous stages of evolution. Molecular cloud H2 volume densities range from 103-8 cm-3
The baryon cycle of Seven Dwarfs with superbubble feedback
Madau, Piero; Mayer, Lucio; Mina, Mattia +3 more
We present results from a high-resolution, cosmological, ΛCDM simulation of a group of field dwarf galaxies with the "superbubble" model for clustered SN feedback, accounting for thermal conduction and cold gas evaporation. We compared our results to a previous simulation which has the same initial condition and galaxy formation physics (other tha…
Measuring the total infrared light from galaxy clusters at z = 0.5-1.6: connecting stellar populations to dusty star formation
Weiner, Benjamin J.; Dey, Arjun; Alberts, Stacey +13 more
Massive galaxy clusters undergo strong evolution from z ~ 1.6 to z ~ 0.5, with overdense environments at high-z characterized by abundant dust-obscured star formation and stellar mass growth which rapidly give way to widespread quenching. Data spanning the near- to far-infrared (IR) can directly trace this transformation; however, such studies hav…
Launching the asymmetric bipolar jet of DO Tau
Bacciotti, F.; Fedele, D.; Coffey, D. +5 more
Context. The role of bipolar jets in the formation of stars, and in particular how they are launched, is still not well understood.
Aims: We probe the protostellar jet launching mechanism using high-resolution observations of the near-infrared (IR) [Fe II]λ1.53,1.64 µm emission lines.
Methods: We consider the case of the bipolar je…
An X-Ray Spectral Study of the Origin of Reflection Features in Bare Seyfert 1 Galaxy ESO 511-G030
Laha, Sibasish; Ghosh, Ritesh
The reprocessed X-ray emission from active galactic nuclei is an important diagnostic tool to study the dynamics and geometry of the matter surrounding supermassive black holes (SMBHs). We present a broadband (optical-UV to hard X-ray) spectral study of the bare Seyfert 1 galaxy, ESO 511-G030, using multi-epoch Suzaku and XMM-Newton data from 2012…