OPTICAL AND NEAR-INFRARED OBSERVATIONS OF S-140N

DOI: 
10.1086/116665
Publication date: 
01/08/1993
Main author: 
EIROA, C
IAA authors: 
Authors: 
EIROA, C; LENZEN, R; MIRANDA, LF; TORRELLES, JM; ANGLADA, G; ESTALELLA, R
Journal: 
ASTRONOMICAL JOURNAL
Publication type: 
Article
Volume: 
106
Pages: 
613-&
Number: 
Abstract: 
Optical CCD images and polarimetry as well as near-IR observations of the molecular core S 140N are presented. The images reveal a reflection nebulosity associated with the young IRAS source 22178+6317. Two pointlike sources are embedded in the reflection nebulosity. The near-IR colors indicate an IR excess characteristic of PMS objects. The CO outflow detected in the region is likely to be driven by these young objects. Four Herbig-Haro objects are detected in our images. This is the first detection of these kinds of objects in the S 140 molecular cloud. The HH objects are aligned in a scale of almost-equal-to 2.5' (almost-equal-to 0.7 pc) and point to a faint star, located at the northern end of the brighter HH object This star is therefore a suitable candidate to excite the HH objects and is likely to be a T Tauri-like star. In addition, the star is centered on a previously detected ammonia core and likely heats the high density gas. Finally, these data show that not only high-mass stars, but also low-mass stars have recently formed in the S 140 molecular cloud.
Database: 
WOK
Keywords: