Studies of a possible new Herbig Ae/Be star in the open cluster NGC 7380

TL;DR

This study identifies the star 2MASS J22472238+5801214 in NGC 7380 as a Herbig Ae/Be star through multi-wavelength observations, revealing its environment, nebulosity, and high-velocity outflows, clarifying its nature among previous uncertain classifications.

Contribution

The paper provides the first comprehensive multi-wavelength analysis confirming the star as a Herbig Ae/Be object, resolving previous ambiguities about its classification.

Findings

Confirmed the star as a Herbig Ae/Be star

Detected a bow shock-like nebulosity near the star

Observed a high-velocity outflow from the star

Abstract

We present a study of the star 2MASS J22472238+5801214 with the aim of identifying its true nature which has hitherto been uncertain. This object, which is a member of the young cluster NGC 7380, has been variously proposed to be a Be star, a D-type symbiotic and a Herbig Ae/Be star in separate studies. Here we present optical spectroscopy, near-IR photometry and narrow band H-alpha imaging of the nebulosity in its environment. Analysis of all these results, including the spectral energy distribution constructed from available data, strongly indicate the source to be a Herbig Ae/Be star. The star is found to be accompanied by a nebulosity with an interesting structure. A bow shock shaped structure, similar to a cometary nebula, is seen very close to the star with its apex oriented towards the photoionizing source of this region (i.e. the star DH Cep). An interesting spectroscopic finding, from the forbidden [SII] 6716, 6731 \AA and [OI] 6300 \AA lines, is the detection of a blue-shifted high velocity outflow (200 +/- 50 km/s) from the star.