Table 2
Identification of saturated COMs and complex carbon chains in Orion-KL.
| Species | Identification | Peak | Column density at peak (cm-2) | Other interferometric detections |
CH3CN,  |
√ | SMA1 | 1.4(17), 9.4(14) | a, b, e, i |
| CH2CHCN | √ | North to hotcore | ≥5.0(15) | b, d, e |
| CH3CH2CN | √ | hotcore | ≥1.1(16) | a, b, d, e, i, k |
| CH3OH | √ | SMA1 & mm3a | ≥2.5(17) | a, b, d, e, f, i, m |
| HCOOCH3 | √ | mm3a & mm3b | ≥9.7(16) | b, d, e, g, i, k |
| CH3COCH3 | √ | SMA1 | ≥1.5(16) | c, i, k |
| CH3OCH3 | √ | mm3a & mm3b | ≥2.0(17) | b, d, e, h, i, j |
| CH3CH2OH | √ | near SMA1 & mm3a | ≥ 1.5(16) | d (×), e and j (only 1 line) |
| (CH2OH)2 | × | − | − | − |
| CH2OHCHO | × | − | − | g. (some lines <3σ) |
| HCOOH | × | − | − | d (×), l (<3σ), i (only from the extended configuration) |
| CH3CHO | * | mm3a & mm3b | ≥1.3(16) | d (×), i (×), n (CARMA and ALMA) |
| C6H | * | SMA1 | ≥1.0(15) | − |
| HC7N | * | North to hotcore | ≥1.0(16) | − |
Notes. Confirmed COMs are marked with “√”, tentative detections with “*”, and nondetections with “×”. At each of their main emission peak (Fig. 5), column density of CH3CN is obtained with optical depth correction, while column densities of the rest molecules are obtained at the temperature of an adjacent substructure from synthetic fittings, with an assumption that the species lines are optically thin (we denote them by “≥”), x(y) = x × 10y.
Reference. a) Wright et al. (1996); b) Beuther et al. (2005); c) Friedel et al. (2005); d) Friedel & Snyder (2008); e) Guélin et al. (2008); f) Zapata et al. (2011); g) Favre et al. (2011a); h) Favre et al. (2011b); i) Widicus Weaver & Friedel (2012); j) Brouillet et al. (2013); k) Peng et al. (2013); l) Liu et al. (2002); m) Peng et al. (2012a); n) Loomis (priv. comm.).
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.