Blesson Mathew, D. P. K. Banerjee, N. M. Ashok, Annapurni Subramaniam, B. Bhavya, Vishal Joshi
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.
View original:
http://arxiv.org/abs/1201.4956
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