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The JCMT BISTRO Survey: Evidence for Pinched Magnetic Fields in Quiescent Filaments of NGC 1333
Pattle, Kate; Ward-Thompson, Derek; Bastien, Pierre +33 more
We investigate the internal 3D magnetic structure of dense interstellar filaments within NGC 1333 using polarization data at 850 µm from the B-fields In STar-forming Region Observations survey at the James Clerk Maxwell Telescope. Theoretical models predict that the magnetic field lines in a filament will tend to be dragged radially inward (…
Formation of an ultra-diffuse galaxy in the stellar filaments of NGC 3314A: Caught in the act?
Rampazzo, Roberto; Forbes, Duncan A.; Mieske, Steffen +13 more
The VEGAS imaging survey of the Hydra I cluster has revealed an extended network of stellar filaments to the south-west of the spiral galaxy NGC 3314A. Within these filaments, at a projected distance of ∼40 kpc from the galaxy, we discover an ultra-diffuse galaxy (UDG) with a central surface brightness of µ0, g ∼ 26 mag arcsec
The List of Possible Double and Multiple Open Clusters between Galactic Longitudes 240° and 270°
Casado, J.
Abstract—This work studies the candidate double and multiple open clusters (OCs) in the galactic sector from l = 240° to l = 270°, which contains the Vela-Puppis star formation region. To do that, we have searched the most recent and complete catalogues of OCs by hand to get an extensive list of 22 groups of OCs involving 80 candidate members. Gai…
Constraining the Konoplya-Rezzolla-Zhidenko deformation parameters. II. Limits from stellar-mass black hole x-ray data
Yu, Zhibo; Tripathi, Ashutosh; Abdikamalov, Askar B. +5 more
Astrophysical black holes are thought to be the Kerr black holes predicted by general relativity, but macroscopic deviations from the Kerr solution can be expected from a number of scenarios involving new physics. In Paper I, we studied the reflection features in NuSTAR and XMM-Newton spectra of the supermassive black hole at the center of the gal…
A near-infrared interferometric survey of debris-disk stars. VII. The hot-to-warm dust connection
Absil, O.; Augereau, J. -C.; Ertel, S. +10 more
Context. Hot exozodiacal dust has been shown to be present in the innermost regions of an increasing number of main sequence stars over the past 15 yr. However, the origin of hot exozodiacal dust and its connection with outer dust reservoirs remains unclear.
Aims: We aim to explore the possible connection between hot exozodiacal dust and warm…
Black Hole and Galaxy Coevolution in Moderately Luminous Active Galactic Nuclei at z ∼ 1.4 in SXDF
Ueda, Yoshihiro; Toba, Yoshiki; Akiyama, Masayuki +1 more
We investigate the relation of black hole mass versus host stellar mass and that of mass accretion rate versus star formation rate (SFR) in moderately luminous ( $\mathrm{log}{L}_{\mathrm{bol}}\sim 44.5\mbox{--}46.5\ \mathrm{erg}\,{{\rm{s}}}^{-1}$ <!-- --> ), X-ray selected broad-line active galactic nuclei (AGNs) at z = 1.18-1.68 in the Sub…
Narrowband Observations of Comet 46P/Wirtanen during Its Exceptional Apparition of 2018/19. I. Apparent Rotation Period and Outbursts
Skiff, Brian A.; Feaga, Lori M.; Schleicher, David G. +4 more
We obtained broad- and narrowband images of the hyperactive comet 46P/Wirtanen on 33 nights during its 2018/2019 apparition, when the comet made a historic close approach to the Earth. With our extensive coverage, we investigated the temporal behavior of the comet on both seasonal and rotational timescales. We used CN observations to explore the c…
The NuSTAR extragalactic survey of the James Webb Space Telescope North Ecliptic Pole time-domain field
Alexander, D. M.; Cappelluti, N.; Gandhi, P. +17 more
We present the NuSTAR extragalactic survey of the James Webb Space Telescope (JWST) North Ecliptic Pole (NEP) Time-Domain Field. The survey covers a ~0.16 deg2 area with a total exposure of 681 ks acquired in a total of nine observations from three epochs. The survey sensitivities at 20 per cent of the area are 2.39, 1.14, 2.76, 1.52, a…
Investigating Clumpy Galaxies in the Sloan Digital Sky Survey Stripe 82 Using the Galaxy Zoo
Charlot, Stéphane; Chevallard, Jacopo; Scarlata, Claudia +7 more
Giant, star-forming clumps are a common feature prevalent among high-redshift star-forming galaxies and play a critical role in shaping their chaotic morphologies and yet, their nature and role in galaxy evolution remains to be fully understood. A majority of the effort to study clumps has been focused at high redshifts, and local clump studies ha…
The nature of giant clumps in high-z discs: a deep-learning comparison of simulations and observations
Snyder, Gregory; Dekel, Avishai; Primack, Joel +4 more
We use deep learning to explore the nature of observed giant clumps in high-redshift disc galaxies, based on their identification and classification in cosmological simulations. Simulated clumps are detected using the 3D gas and stellar densities in the VELA zoom-in cosmological simulation suite, with ${\sim}25\ \rm {pc}$ maximum resolution, targe…