A multicolour view of the Lynds 1340 star forming region
Kun Mária
MTA CSFK CSI


Lynds 1340 is an isolated star forming molecular cloud, located at a distance of 825 pc from us, and some 160 pc above the Galactic plane. I will present the results of a multi-wavelength observational study of L1340, aimed at determining the specialities of star formation in this cloud, and integrating Lynds 1340 into the picture of star formation of our 1-kpc Galactic environment. The structure of the cloud was examined based on a new extinction map, constructed from SDSS data. More than 200 young stellar objects, born in the cloud, were identified and studied based on a wide-field slitless grism spectroscopic survey for H alpha emission stars, low-resolution longslit spectroscopic observations, high angular resolution near-infrared imaging data of an embedded cluster, as well as Spitzer and WISE mid-infrared data. We find that L1340 is giving birth to several mini-clusters of intermediate and low mass stars, whereas its total mass is some two order of magnitude smaller than that of a typical giant galactic molecular cloud. Star forming regions similar to L1340 are probably transient, short-lived structures.