[PDF] Top 20 A source of extended HCO+ emission in young stellar objects

... simplifications have been made. First, the abundances that have been inferred from the observations, and which we have attempted to model, have been deduced on the assumption of a specific dynamical scenario (spherically ... See full document

... We find upon examination of the single component sources that the broad line widths are often found to be at the apex of a cone shape that extends to the edges of the clump, and in a smaller number of cases this is ... See full document

... very young, either at the end of the embedded protostellar phase or at the beginning of the disk-dominated PMS phase, since they had not enough time to disperse similarly as the Class II YSO ... See full document

... from young stellar objects ...μm emission is up to an order of magnitude higher than the value estimated from methods based on diffuse emission (such as free–free ...evolved ... See full document

... gyrosynchrotron emission alone should be L n , R = 10 ...tron emission is a negligible contribution to the total radio fl ux from V374 ...from young stellar ...radio emission through ECM ... See full document

... Any source detection with a flagged pixel within its photometry aperture is rejected and does not pass through the ...photometry. Source detection and aperture photome- try are performed using the IDL ... See full document

... structures) emission to allow an investigation of their extended ...sampled objects, between two and four point sources were detected at 8 µm in the Galactic Legacy Infrared Midplane Survey ... See full document

... a source whose maximum emission peaks at wavelength λ, and does not include the contribution to that emission, at the same wavelength, from colder or hotter ...a source emitting at 850 ...disc ... See full document

... important source of contamination given the faint magnitude limits of the ...9 objects in the ρ Ophiuchi field, compared to the candidate-member sample of ... See full document

... presence of forming stars before they are revealed. Outflows may modify the structure of protostellar discs (Combet & Ferreira 2008), affect the penetration of ionizing particles and stellar radiation into the ... See full document

... rotating young stellar objects ( YSOs ) with hot spots in their atmospheres, inner disk warps, and other three-dimensional effects in the nearby circumstellar ...creates stellar hot spots upon ... See full document

... Young stellar objects have a complicated structure: a protostar, circumstellar disk, envelope, and outflow ...some objects might be accompanied by either ambient or fore- ground ...light ... See full document

... the stellar flux in the infrared ...whether objects not seen at wavelength longer than 24 µm may not be as young as 1 Myr (as assumed by Yusef-Zadeh et ...a source is a YSO or not, its size at ... See full document

... The key idea is that the shaking up of the stellar photosphere in the neighbourhood of the accretion column would launch waves propagating over the photosphere. Those regions with open magnetic field lines would ... See full document

... of young massive ...μm emission than 14 μm emission (suggestive of strong polycyclic aromatic hydrocarbon, PAH, emission commonly seen around H ii regions, but excluded from our color ... See full document

... of young stellar populations depends on the accuracy of the model atmospheres and evolutionary tracks for massive ...input stellar param- eters to reflect current values available in the ... See full document

... red stellar objects extracted from the point-source catalogue of the INT Photometric Hα Survey (IPHAS) of the northern galactic ...these objects have no previous ...these objects traces ... See full document

... X-ray source is thought to lie close to the MBH and this illuminates an optically thick, geometrically thin accretion ...X-ray emission and is thought to be the origin of the “Big Blue Bump” (BBB) and the ... See full document

... As one moves away from the star, the filling factor of hot chromospheric plasma decreases, and hence the difference between the mean temperature inferred from the VLA radio interferometry and the bulk gas temperature ... See full document

... projection breaks time reversal symmetry. Therefore there are only leptons with negative e charge with its neu- trinos in the 4D space time, and thus the universe does not contain anti-matter symmetry. Incidentally the ... See full document