Search Publications
Feedback of molecular outflows from protostars in NGC 1333 revealed by Herschel and Spitzer spectro-imaging observations
Güdel, Manuel; Persson, Magnus; Tafalla, Mario +2 more
Context. Far infrared cooling of excited gas around protostars has been predominantly studied in the context of pointed observations. Large-scale spectral maps of star forming regions enable the simultaneous, comparative study of the gas excitation around an ensemble of sources at a common frame of reference, therefore, providing direct insights i…
Gas and star formation from HD and dust emission in a strongly lensed galaxy
Maiolino, R.; Caselli, P.; Carniani, S. +1 more
The molecular gas content of high-redshift galaxies is a highly sought-after property. However, H2 is not directly observable in most environments, so its mass is probed through other emission lines (e.g. CO, [C I], [C II]), or through a gas-to-dust ratio. Each of these methods depends on several assumptions, and are best used in parall…
Clustering of Fast Coronal Mass Ejections during Solar Cycles 23 and 24 and the Implications for CME-CME Interactions
Veronig, Astrid; Podladchikova, Tatiana; Feynman, Joan +3 more
We study the clustering properties of fast coronal mass ejections (CMEs) that occurred during solar cycles 23 and 24. We apply two methods: the Max Spectrum method can detect the predominant clusters, and the declustering threshold time method provides details on the typical clustering properties and timescales. Our analysis shows that during the …
Component properties and mutual orbit of binary main-belt comet 288P/(300163) 2006 VW139
Agarwal, J.; Weaver, H.; Larson, S. +3 more
Context. The binary asteroid 288P/(300163) is unusual both for its combination of wide-separation and high mass ratio and for its comet-like activity. It is not currently known whether there is a causal connection between the activity and the unusual orbit or if instead the activity helped to overcome a strong detection bias against such sub-arcse…
Illuminating a tadpole's metamorphosis II: observing the ongoing transformation with ALMA
Reiter, Megan; Garay, Guido; McLeod, Anna F. +4 more
We present new Atacama Large Millimeter/submillimeter Array observations of the tadpole, a small globule in the Carina Nebula that hosts the HH 900 jet+outflow system. Our data include 12CO, 13CO, C18O J=2-1, 13CO, C18O J=3-2, and serendipitous detections of DCN J=3-2 and CS J=7-6. With angula…
Two successive partial mini-filament confined ejections
Mandrini, C. H.; Cristiani, G. D.; López Fuentes, M. +2 more
Active region (AR) NOAA 11476 produced a series of confined plasma ejections, mostly accompanied by flares of X-ray class M, from 08 to 10 May 2012. The structure and evolution of the confined ejections resemble that of EUV surges; however, their origin is associated to the destabilization and eruption of a mini-filament, which lay along the photo…
Have we seen all the galaxies that comprise the cosmic infrared background at 250 µm ≤ λ ≤ 500 µm?
Ivison, R. J.; Clements, D. L.; Lagache, G. +11 more
The cosmic infrared background (CIB) provides a fundamental observational constraint on the star formation history of galaxies over cosmic history. We estimate the contribution to the CIB from catalogued galaxies in the COSMOS field by using a novel map fitting technique on the Herschel SPIRE maps. Prior galaxy positions are obtained using detecti…
Whether Small Flux Ropes and Magnetic Clouds Have the Same Origin: A Statistical Study of Small Flux Ropes in Different Types of Solar Wind
Wang, Yuming; Shen, Chenglong; Hu, Qiang +2 more
According to the duration and size, magnetic flux ropes can be divided into large-scale flux ropes, namely, magnetic clouds, and small-scale flux ropes (SFRs). Whether SFRs have the same origin as magnetic clouds has been a hot topic for a long time. Based on the SFR database developed by Hu et al. and Chen et al., this paper analyzes the properti…
The TRENDS High-contrast Imaging Survey. VIII. Compendium of Benchmark Objects
Howard, Andrew W.; Crepp, Justin R.; Montet, Benjamin T. +5 more
The physical properties of faint stellar and substellar objects often rely on indirect, model-dependent estimates. For example, the masses of brown dwarfs are usually inferred using evolutionary models, which are age dependent and have yet to be properly calibrated. With the goal of identifying new benchmark objects to test low-mass stellar and su…
The initial mass function in the extended ultraviolet disc of M83
Rich, R. Michael; Thilker, David A.; Bianchi, Luciana +7 more
Using Hubble Space Telescope ACS/WFC data we present the photometry and spatial distribution of resolved stellar populations of four fields within the extended ultraviolet disc (XUV disc) of M83. These observations show a clumpy distribution of main-sequence stars and a mostly smooth distribution of red giant branch stars. We constrain the upper e…