Search Publications
Missions
Journals
Publication Years
Evidence that widespread star formation may be underway in G0.253+0.016, `The Brick'
Marsh, K. A.; Whitworth, A. P.; Clark, P. C. +1 more
Image cubes of differential column density as a function of dust temperature are constructed for Galactic Centre molecular cloud G0.253+0.016 (`The Brick') using the recently described PPMAP procedure. The input data consist of continuum images from the HerschelSpace Telescope in the wavelength range 70-500 µm, supplemented by previously pub…
Probing star formation in the dense environments of z ∼ 1 lensing haloes aligned with dusty star-forming galaxies detected with the South Pole Telescope
Omont, A.; Dole, H.; Doré, O. +46 more
We probe star formation in the environments of massive (∼1013 M⊙) dark matter haloes at redshifts of z ∼ 1. This star formation is linked to a submillimetre clustering signal which we detect in maps of the Planck High Frequency Instrument that are stacked at the positions of a sample of high redshift (z > 2) strongly lense…
Interplanetary Type IV Bursts
Hillaris, A.; Bouratzis, C.; Nindos, A.
We study the characteristics of moving type IV radio bursts that extend to hectometric wavelengths (interplanetary type IV or type IVIP bursts) and their relationship with energetic phenomena on the Sun. Our dataset comprises 48 interplanetary type IV bursts observed with the Radio and Plasma Wave Investigation (WAVES) instrument onboard Wind in t…
Separation of dynamic and isostatic components of the Venusian gravity and topography and determination of the crustal thickness of Venus
Yang, An; Huang, Jinshui; Wei, Daiyun
Assuming that the long-wavelength geoid and topography of Venus are supported by both mantle convection and Airy isostasy, we propose a method to separate the dynamic and isostatic components of the Venusian gravity and topography with the aid of the dynamic admittance from numerical models of mantle convection and the isostatic admittance from an…
Dust properties in H II regions in M 33
Boquien, M.; De Looze, I.; Braine, J. +11 more
Context. The infrared emission (IR) of the interstellar dust has been claimed to be a tracer of the star formation rate. However, the conversion of the IR emission into star formation rate can be strongly dependent on the physical properties of the dust, which are affected by the environmental conditions where the dust is embedded.
Aims: We s…
Statistics of energetic electrons in the magnetotail reconnection
Xu, Xiaojun; Huang, Shiyong; Zhou, Meng +5 more
Magnetic reconnection has long been regarded as an important site for producing energetic electrons in solar terrestrial and astrophysical plasmas. The motivation of this paper is to provide the average properties of energetic electrons in reconnection region, which are crucial for understanding electron energization mechanism but are rarely known…
Ortho-to-para ratio of NH2. Herschel-HIFI observations of ortho- and para-NH2 rotational transitions towards W31C, W49N, W51, and G34.3+0.1
Persson, C. M.; Gerin, M.; Herbst, E. +10 more
We have used the Herschel-HIFI instrument to observe the two nuclear spin symmetries of amidogen (NH2) towards the high-mass star-forming regions W31C (G10.6-0.4), W49N (G43.2-0.1), W51 (G49.5-0.4), and G34.3+0.1. The aim is to investigate the ratio of nuclear spin types, the ortho-to-para ratio (OPR) of NH2 in the translucen…
Complex central structures suggest complex evolutionary paths for barred S0 galaxies
Knapen, Johan H.; Dullo, Bililign T.; Martínez-Lombilla, Cristina
We investigate three barred lenticular galaxies (NGC 2681, NGC 3945 and NGC 4371), which were previously reported to have complex central structures but without a detailed structural analysis of these galaxies' high-resolution data. We have therefore performed four- to six-component (pseudo-)bulge/disc/bar/ring/point source) decompositions of the …
New Spectroscopic Technique Based on Coaddition of Surface Brightness Fluctuations: NGC 4449 and its Stellar Tidal Stream
Romanowsky, Aaron J.; Brodie, Jean P.; Arnold, Jacob A. +5 more
We present a new spectroscopic technique based in part on targeting the upward fluctuations of the surface brightness for studying the internal stellar kinematics and metallicities of galaxies of low surface brightness effects both to galaxies and streams beyond the Local Group. The distance to these systems makes them unsuitable for targeting ind…
Venus Cloud Morphology and Motions from Ground-based Images at the Time of the Akatsuki Orbit Insertion
Hueso, R.; Sánchez-Lavega, A.; Rojas, J. F. +7 more
We report Venus image observations around the two maximum elongations of the planet at 2015 June and October. From these images we describe the global atmospheric dynamics and cloud morphology in the planet before the arrival of JAXA’s Akatsuki mission on 2015 December 7. The majority of the images were acquired at ultraviolet wavelengths (380-410…