منابع مشابه
Star formation in Perseus IV .
Context. In our SCUBA survey of Perseus, we find that the fraction of protostellar cores increases towards higher masses and the most massive cores are all protostellar. Aims. In this paper we consider the possible explanations of this apparent mass dependence in the evolutionary status of these cores. We investigate the implications for protostellar evolution and the mapping of the embedded co...
متن کاملStar formation in Perseus III . Outflows
Context. We present a search for outflows towards 51 submillimetre cores in the Perseus molecular cloud. Aims. Our first objective is to identify the protostellar population through the detection of molecular outflows. Our second aim is to consistently derive outflow properties from a large homogeneous dataset within one molecular cloud in order to investigate further the mass dependence and ti...
متن کاملStar formation in Perseus II . SEDs , classification and lifetimes
Context. Hatchell et al. (2005) (Paper I) published a submillimetre continuum map of the Perseus molecular cloud, detecting the starless and protostellar cores within it. Aims. To determine the evolutionary stage of each submm core in Perseus, and investigate the lifetimes of these phases. Methods. We compile spectral energy distributions (SEDs) from 2MASS (1–2 μm), Spitzer IRAC (3.6, 4.5, 5.8,...
متن کاملStar formation in Perseus Clusters , filaments and the conditions for star formation
We present a complete survey of current star formation in the Perseus molecular cloud, made at 850 and 450 μm with SCUBA at the JCMT. Covering 3 deg2, this submillimetre continuum survey for protostellar activity is second in size only to that of ρ Ophiuchus (Johnstone et al. 2004). Complete above 0.4 M⊙ (5σ detection in a 14 beam), we detect a total of 91 protostars and prestellar cores. Of th...
متن کاملLuminous Red Variable Star
We report photometry and spectroscopy of the evolution of Nova Sagittarii 1994 #1 (V4332 Sagittarii) during outburst. We compare the photometric and spectral evolution of this outburst to known classes of outbursts – including classical novae and outbursts occurring on symbiotic stars – and find this object does not conform to any known class of outburst. The closest match to the behavior of th...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1921
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/81.5.392