Warm HCN, C2H2, and CO in the Disk of GV Tau

Autor:	Sean D. Brittain, Terrence W. Rettig, Erika L. Gibb, K. A. Van Brunt
Rok vydání:	2007
Předmět:	Physics 010308 nuclear & particles physics Infrared Astrophysics (astro-ph) FOS: Physical sciences Astronomy and Astrophysics Astrophysics 01 natural sciences T Tauri star 13. Climate action Space and Planetary Science 0103 physical sciences Binary star 010303 astronomy & astrophysics
Zdroj:	The Astrophysical Journal. 660:1572-1579
ISSN:	1538-4357 0004-637X
DOI:	10.1086/513502
Popis:	We present the first high-resolution, ground-based observations of HCN and C2H2 toward the T Tauri binary star system GV Tau. We detected strong absorption due to HCN nu_3 and weak C2H2 (nu_3 and nu_2 + (nu_4 + nu_5)^0_+) absorption toward the primary (GV Tau S) but not the infrared companion. We also report CO column densities and rotational temperatures, and present abundances relative to CO of HCN/CO ~0.6% and C2H2/CO ~1.2% and an upper limit for CH4/CO < 0.37% toward GV Tau S. Neither HCN nor C2H2 were detected toward the infrared companion and results suggest that abundances may differ between the two sources. 23 pages, 6 figures, accepted by ApJ
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a9c1d4cb01249377631e5af1a96eeaf6 https://doi.org/10.1086/513502 Zobrazit plný text záznamu