DISCOVERY OF NEAR-INFRARED HYDROGEN LINE EMISSION IN THE PECULIAR F8 HYPERGIANT IRC+10420

Authors
OUDMAIJER RD GEBALLE TR WATERS LBFM SAHU KC
Citation
Rd. Oudmaijer et al., DISCOVERY OF NEAR-INFRARED HYDROGEN LINE EMISSION IN THE PECULIAR F8 HYPERGIANT IRC+10420, Astronomy and astrophysics, 281(1), 1994, pp. 33-36
Citations number
15
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Astronomy and astrophysics → ACNP
ISSN journal
00046361
Volume
281
Issue
1
Year of publication
1994
Pages
33 - 36
Database
ISI
SICI code
0004-6361(1994)281:1<33:DONHLE>2.0.ZU;2-2
Abstract
High resolution infrared spectroscopy of IRC +10420 has revealed remar kable profiles of several hydrogen recombination lines, with emission detected for the first time in these lines. Brgamma, Pfgamma and Bralp ha have emission peaks blue-shifted with respect to the photosphere, B r12 shows an emission core in the photospheric absorption line. In con trast, the Halpha line profile is double peaked. The line emission is interpreted as originating from a bipolar outflow that probably starte d as recent as ten years ago.