CN 2-1 and CS 5-4 observations toward Arp 299 with the SMA

Abstract

Dense gas is the key for understanding star formation in galaxies. We present high resolution ($\sim 3^{\prime \prime }$) observations of CN 2-1 and CS 5-4 as dense gas tracers toward Arp 299, a mid stage major merger of galaxies, with the Submillimeter Array (SMA). The spatial distribution of CN 2-1 and CS 5-4 are generally consistent with each other, as well as HCN 1-0 in literature. However, different line ratios of CS 5-4 and CN 2-1 are found in A, B, and C regions, with highest value in B. Dense gas fraction decreases from IC 694 (A), to NGC 3690 (B) and the overlap starburst region (C and C${}^{\prime }$), which indicates that circum-nuclear upcoming starburst in A and B will be more efficient than that in the overlap region of Arp 299.

6pages, 2 Figures

References in corpus (7)

• The Critical Density and the Effective Excitation Density of Commonly Observed Molecular Dense Gas Tracers
• SMA Imaging of CO(3-2) Line and 860 micron Continuum of Arp 220 : Tracing the Spatial Distribution of Luminosity
• ALMA Imaging of HCN, CS and dust in Arp 220 and NGC 6240
• HCN versus HCO+ as dense molecular gas mass tracer in Luminous Infrared Galaxies
• ALMA Spatially-resolved Dense Molecular Gas Survey of Nearby Ultraluminous Infrared Galaxies
• Kiloparsec-scale Variations in the Star Formation Efficiency of Dense Gas: the Antennae Galaxies (NGC 4038/39)
• Dense gas in local galaxies revealed by multiple tracers