Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...281..491z&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 281, no. 2, p. 491-504
Astronomy and Astrophysics
Astronomy
7
H Alpha Line, Infrared Astronomy, Interstellar Matter, Pre-Main Sequence Stars, Stellar Luminosity, Stellar Spectra, Stellar Spectrophotometry, Visible Spectrum, A Stars, B Stars, Calcium, Emission Spectra, H Ii Regions, Iron, Near Infrared Radiation
Scientific paper
We report the discovery in the S 187 complex of a young stellar object with an optical counterpart. High resolution spectroscopy in the red and near infrared indicates that this object is a pre-main-sequence star. In the red, the spectrumis dominated by a very bright H-alpha line with a total width (wing to wing) greater than 1000 km/s. This line exhibits a special type of P Cygni profile (Beal's Type III). The object's near infrared spectrum is dominated by the Ca II triplet emission at 8498 A, 8542 A, and 8662 A; these lines are broad and optically thick. Numerous Fe I and Fe II emission lines are observed also, B, V, R, I, H, K, and L magnitudes of the object, as well as its H-alpha luminosity, indicate that it is probably a Herbig late Be or early Ae star. It presents many characteristics of the 'outflow group' of Herbig stars identified by Hamann & Persson (1992B); it is very similar, both in luminosity and geometry, to the well-known young stellar objects V645 Cyh and R Mon.
Caplan James
Deharveng Lise
Zavagno Annie
No associations
LandOfFree
A new young stellar object in the S 187 complex: Photometry and spectroscopy does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A new young stellar object in the S 187 complex: Photometry and spectroscopy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A new young stellar object in the S 187 complex: Photometry and spectroscopy will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-862887