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

TL;DR

This study uses JCMT SCUBA-2 data to analyze dust properties of circumstellar disks in L1495, revealing correlations between disk mass, stellar spectral type, and dust characteristics across different evolutionary classes.

Contribution

First comprehensive submillimeter survey of circumstellar disks in L1495, highlighting differences in disk mass related to stellar spectral type and evolutionary class.

Findings

23% detection rate at both wavelengths

Higher disk masses around spectral type K stars

Variations suggest differences in dust properties

Abstract

We present 850$\mu$m and 450$\mu$m 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$\times 10^{-3}$M$_{\odot}$, 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.