Last gasp of V1647 Ori: a brief post-outburst warm, molecular wind

Autor:	Theodore Simon, Dinshaw S. Balsara, Terrence W. Rettig, Kenneth H. Hinkle, Erika L. Gibb, David A. Tilley, Sean D. Brittain
Rok vydání:	2007
Předmět:	Physics Accretion rate Nebula Accretion disc Absorption spectroscopy Space and Planetary Science Young star Astronomy Astronomy and Astrophysics Outflow Astrophysics Emission spectrum Accretion (astrophysics)
Zdroj:	Proceedings of the International Astronomical Union. 3:223-230
ISSN:	1743-9221 1743-9213
Popis:	Followup infrared spectroscopy is reported for V1647 Ori, a young star whose recent eruption illuminated McNeil's Nebula. Lines of HI, H2, and CO are compared to previous observations. We find that the accretion rate fell two orders of magnitude and the CO bandheads disappeared at the end of the outburst. We also report a striking metamorphosis of the fundamental CO spectrum from centrally peaked profiles to emission lines with superimposed blue-shifted absorption lines and back again one year later. This remarkable change in spectral appearance indicates that the system did not return to equilibrium immediately following the outburst. In this paper we propose a mechanism to explain the emergence of a transient post-outburst outflow.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c22f87682387e543ff52082ae3e03016 https://doi.org/10.1017/s1743921307009581 Zobrazit plný text záznamu Plný text ve formátu PDF