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The JCMT Gould Belt Survey: SCUBA-2 observations of circumstellar discs in L 1495

Buckle, J. V., Drabek-Maunder, Emily, Greaves, Jane, Richer, J. S., Matthews, B. C., Johnstone, D., Kirk, H., Beaulieu, S. F., Berry, D. S., Broekhoven-Fiene, H., Currie, M. J., Fich, M., Hatchell, J., Jenness, T., Mottram, J. C., Nutter, D., Pattle, K., Pineda, J. E., Salji, C., Tisi, S., Francesco, J. D., Hogerheijde, M. R., Ward-Thompson, D., Bastien, P., Butner, H., Chen, M., Chrysostomou, A., Coude, S., Davis, C. J., Duarte Cabral, Ana, Friberg, P., Friesen, R., Fuller, G. A., Graves, S., Gregson, J., Holland, W., Joncas, G., Kirk, J. M., Knee, L. B. G., Mairs, S., Marsh, Kenneth, Moriarty-Schieven, G., Rawlings, J., Rosolowsky, E., Rumble, D., Sadavoy, S., Thomas, H., Tothill, N., Viti, S., White, G. J., Wilson, C. D., Wouterloot, J., Yates, J. and Zhu, M. 2015. The JCMT Gould Belt Survey: SCUBA-2 observations of circumstellar discs in L 1495. Monthly Notices of the Royal Astronomical Society 449 (3) , pp. 2472-2488. 10.1093/mnras/stv438

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Abstract

We present 850μm and 450μm data from the JCMT Gould Belt Survey obtained with SCUBA-2 and characterise the dust attributes of Class I, Class II and Class III disk sources in L1495. We detect 23% of the sample at both wavelengths, with the detection rate decreasing through the Classes from I--III. The median disk mask is 1.6×10−3M⊙, and only 7% of Class II sources have disk masses larger than 20 Jupiter masses. We detect a higher proportion of disks towards sources with stellar hosts of spectral type K than spectral type M. Class II disks 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 disks. Variations in disk masses calculated at the two wavelengths suggests there may be differences in dust opacity and/or dust temperature between disks with hosts of spectral types K to those with spectral type M.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Publisher: Oxford University Press
ISSN: 0035-8711
Last Modified: 22 Jun 2019 22:16
URI: http://orca-mwe.cf.ac.uk/id/eprint/87928

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