Young Stars in the Camelopardalis Dust and Molecular Clouds. III. the GL 490 Region

TL;DR

This study identifies and characterizes 50 potential young stellar objects near GL 490 using infrared data, revealing their likely evolutionary stages and effects of reddening and circumstellar material.

Contribution

It presents a new catalog of suspected YSOs in the GL 490 region based on multi-wavelength infrared photometry and analyzes their spectral energy distributions and color-magnitude properties.

Findings

Most objects are likely YSOs of classes I and II.

Suspected YSOs occupy a distinct area in the color-magnitude diagram.

Infrared excesses suggest presence of circumstellar material.

Abstract

Using the infrared photometry data extracted from the 2MASS, IRAS and MSX databases, 50 suspected young stellar objects (YSOs) are selected from about 37500 infrared objects in the 3x3 deg area with the center at Galactic longitude 142.5 deg and latitude +1.0 deg, in the vicinity of the young stellar object GL 490 in the dark cloud DoH 942 (Dobashi et al. 2005). The spectral energy distributions between 700 nm and 100 mum suggest that most of the selected objects may be YSOs of classes I and II. In the color-magnitude diagram K_s vs. H-K_s the suspected YSOs occupy an area right of the main sequence what can be interpreted as being caused by the effects of luminosity, interstellar and circumstellar reddening and infrared thermal emission in circumstellar envelopes and disks.