Search Publications
High-resolution synthetic UV-submm images for simulated Milky Way-type galaxies from the Auriga project
van der Wel, Arjen; De Looze, Ilse; Baes, Maarten +6 more
We present redshift-zero synthetic observational data considering dust attenuation and dust emission for the 30 galaxies of the Auriga project, calculated with the SKIRT radiative transfer code. The post-processing procedure includes components for star-forming regions, stellar sources, and diffuse dust taking into account stochastic heating of du…
The kinematics and dark matter fractions of TNG50 galaxies at z = 2 from an observational perspective
Übler, Hannah; Price, Sedona H.; Genel, Shy +13 more
We contrast the gas kinematics and dark matter contents of z = 2 star-forming galaxies (SFGs) from state-of-the-art cosmological simulations within the ΛCDM framework to observations. To this end, we create realistic mock observations of massive SFGs ( $M_*\gt 4\times 10^{10} \, \mathrm{M}_{\odot}$ , SFR >50 M⊙ yr-1) from …
Kiloparsec-scale AGN outflows and feedback in merger-free galaxies
Simmons, B. D.; Smethurst, R. J.; Coil, A. +7 more
Recent observations and simulations have challenged the long-held paradigm that mergers are the dominant mechanism driving the growth of both galaxies and supermassive black holes (SMBH), in favour of non-merger (secular) processes. In this pilot study of merger-free SMBH and galaxy growth, we use Keck Cosmic Web Imager spectral observations to ex…
HL Dra: an active Algol-like binary system with a pulsating component star and a cool third body
Shi, Xiang-dong; Qian, Sheng-bang; Li, Lin-jia +1 more
HL Draconis (HL Dra) is an oscillating eclipsing binary with an orbital period of 0.944276 d. By analysing the light curves observed with the Transiting Exoplanet Survey Satellite (TESS), it has been detected that HL Dra is an Algol-like binary system with a mass ratio of 0.361, where the radius filling factor (=r/RL) of the primary and…
Outflows in the radio-intermediate quasar III Zw 2: a polarization study with the EVLA and uGMRT
Ho, L. C.; Ishwara-Chandra, C. H.; Harrison, C. M. +4 more
We present results from a polarization study of the radio-intermediate quasar, III Zw 2, at a redshift of 0.089, with the upgraded Giant Metrewave Radio Telescope (uGMRT) at 685 MHz and the Karl G. Jansky Very Large Array (VLA) at 5 and 34 GHz. We detect a kpc-scale outflow, exhibiting transverse magnetic (B-) fields. The curved jet terminates in …
The Milky Way's bar structural properties from gravitational waves
Korol, Valeriya; Rossi, Elena M.; D'Onghia, Elena +1 more
The Laser Interferometer Space Antenna (LISA) will enable Galactic gravitational wave (GW) astronomy by individually resolving >104 signals from double white dwarf (DWD) binaries throughout the Milky Way. Since GWs are unaffected by stellar crowding and dust extinction unlike optical observations of the Galactic plane, in this work, …
A Galactic survey of radio jets from massive protostars
Lumsden, S. L.; Purser, S. J. D.; Hoare, M. G. +1 more
In conjunction with a previous southern-hemisphere work, we present the largest radio survey of jets from massive protostars to date with high-resolution (~0.04 arcsec) Jansky Very Large Array observations towards two subsamples of massive star-forming regions of different evolutionary statuses: 48 infrared-bright, massive, young, stellar objects …
37 new validated planets in overlapping K2 campaigns
Kuzuhara, M.; Tamura, M.; Fridlund, M. +24 more
We analysed 68 candidate planetary systems first identified during Campaigns 5 and 6 (C5 and C6) of the NASA K2 mission. We set out to validate these systems by using a suite of follow-up observations, including adaptive optics, speckle imaging, and reconnaissance spectroscopy. The overlap between C5 with C16 and C18, and C6 with C17, yields light…
Attention-gating for improved radio galaxy classification
Scaife, Anna M. M.; Bowles, Micah; Tang, Hongming +2 more
In this work, we introduce attention as a state-of-the-art mechanism for classification of radio galaxies, using convolutional neural networks. We present an attention-based model that performs on par with previous classifiers while using more than 50 per cent fewer parameters than the next smallest classic CNN application in this field. We demons…
Non-Keplerian spirals, a gas-pressure dust trap, and an eccentric gas cavity in the circumbinary disc around HD 142527
Pinte, C.; Casassus, S.; Boehler, Y. +7 more
We present ALMA observations of the 12CO, 13CO, C18O J = 2-1 transitions and the 1.3 mm continuum emission for the circumbinary disc around HD 142527, at an angular resolution of ≈ 0${_{.}^{\prime\prime}}$3. We observe multiple spiral structures in intensity, velocity, and velocity dispersion for the 12C…