Catherine Zucker edited figures/Candid10_pos_vel/caption.tex  about 9 years ago

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\textit{Top}: Position-velocity diagram of CO, NH$_{3}$, and N$_{2}$H$+$ emission for BC\_332.21-0.04. Blue background shows $^{12}$CO (1-0) emission integrated between $-1 < \textrm{b} < 1$ degrees \citep{Dame_2001}. Black dots show HOPS and MALT90 sources associated with BC\_332.21-0.04. The black colored  lines are fits toCO data for  the Scutum-Centaurus arm, from \citet{Dame_2011}. \textit{Bottom}: arm (see text for references).  Plane of the sky map integrated between -55-35 km/s, the approximate velocity range of the Scutum-Centaurus arm in the region around BC\_332.21-0.04. A trace of BC\_332.21-0.04, as it would appear as a mid-IR extinction feature, is superimposed on the CO emission map.The correlation between BC\_332.21-0.04's mid-IR extinction feature and the Scutum-Centaurus's arm more intense CO emission hints that BC\_332.21-0.04 may be a spine of Scutum as traced by lower density CO gas