The JCMT Gould Belt Survey: SCUBA-2 observations of circumstellar discs in L 1495
Buckle, JV; Drabek-Maunder, E; Greaves, J; et al.Richer, JS; Matthews, BC; Johnstone, D; Kirk, H; Beaulieu, SF; Berry, DS; Broekhoven-Fiene, H; Currie, MJ; Fich, M; Hatchell, J; Jenness, T; Mottram, JC; Nutter, D; Pattle, K; Pineda, JE; Salji, C; Tisi, S; Francesco, JD; Hogerheijde, MR; Ward-Thompson, D; Bastien, P; Butner, H; Chen, M; Chrysostomou, A; Coude, S; Davis, CJ; Duarte-Cabral, A; Friberg, P; Friesen, R; Fuller, GA; Graves, S; Gregson, J; Holland, W; Joncas, G; Kirk, JM; Knee, LBG; Mairs, S; Marsh, K; Moriarty-Schieven, G; Rawlings, J; Rosolowsky, E; Rumble, D; Sadavoy, S; Thomas, H; Tothill, N; Viti, S; White, GJ; Wilson, CD; Wouterloot, J; Yates, J; Zhu, M
Date: 1 May 2015
Journal
Monthly Notices of the Royal Astronomical Society
Publisher
Oxford Journals
Publisher DOI
Abstract
We present 850 and 450 μm data from the James Clerk Maxwell Telescope (JCMT) Gould Belt Survey obtained with Submillimetre Common-User Bolometer Array 2 (SCUBA-2) and characterize the dust attributes of Class I, Class II and Class III disc sources in L 1495. We detect 23 per cent of the sample at both wavelengths, with the detection ...
We present 850 and 450 μm data from the James Clerk Maxwell Telescope (JCMT) Gould Belt Survey obtained with Submillimetre Common-User Bolometer Array 2 (SCUBA-2) and characterize the dust attributes of Class I, Class II and Class III disc sources in L 1495. We detect 23 per cent of the sample at both wavelengths, with the detection rate decreasing through the Classes from I to III. The median disc mask is 1.6 × 10<SUP>-3</SUP> M<SUB>⊙</SUB>, and only 7 per cent of Class II sources have disc masses larger than 20 Jupiter masses. We detect a higher proportion of discs towards sources with stellar hosts of spectral type K than spectral type M. Class II discs with single stellar hosts of spectral type K have higher masses than those of spectral type M, supporting the hypothesis that higher mass stars have more massive discs. Variations in disc masses calculated at the two wavelengths suggest that there may be differences in dust opacity and/or dust temperature between discs with hosts of spectral types K to those with spectral type M.
Physics and Astronomy
Faculty of Environment, Science and Economy
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