Star Formation in the Gulf of Mexico
Tina Armond, Bo Reipurth, John Bally, Colin Aspin
TL;DR
This study investigates the active star formation in the dense molecular cloud L935, known as the Gulf of Mexico, revealing numerous new Herbig-Haro objects and Halpha emission-line stars, including a cluster of pre-main sequence stars.
Contribution
It provides the first wide-field optical/infrared survey of the Gulf of Mexico region, discovering new star-forming objects and characterizing the local young stellar population.
Findings
35 new Herbig-Haro objects identified
41 Halpha emission-line stars discovered, 30 new
A cluster of pre-main sequence stars around LkHalpha 185-189
Abstract
We present an optical/infrared study of the dense molecular cloud, L935, dubbed "The Gulf of Mexico", which separates the North America and the Pelican nebulae, and we demonstrate that this area is a very active star forming region. A wide-field imaging study with interference filters has revealed 35 new Herbig-Haro objects in the Gulf of Mexico. A grism survey has identified 41 Halpha emission-line stars, 30 of them new. A small cluster of partly embedded pre-main sequence stars is located around the known LkHalpha 185-189 group of stars, which includes the recently erupting FUor HBC 722.
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