J/ApJ/867/167 High-mass outflows from the COHRS CO(3-2) survey (Li+, 2018) ================================================================================ High-mass outflows identified from COHRS CO (3-2) survey. Li Q., Zhou J., Esimbek J., He Y., Baan W.A., Li D., Wu G., Tang X., Ji W., Zhexeray D. =2018ApJ...867..167L ================================================================================ ADC_Keywords: Interstellar medium; Star Forming Region; Carbon monoxide; Mass loss; Galactic plane Keywords: ISM: jets and outflows ; ISM: molecules ; stars: formation ; stars: massive Abstract: An unbiased search of molecular outflows within the region of the CO High Resolution survey has identified 157 high-mass outflows from a sample of 770 APEX Telescope Large Area Survey of the Galaxy clumps with a detection rate of 20%. The detection rate of outflows increases for clumps with higher M_clump_, L_bol_, L_bol_/M_clump_,N_H2_, and T_dust_ compared to the clumps with no outflow. The detection rates of the outflow increase from protostellar (8%) to young stellar object clump (17%) to massive star-forming clump (29%). The detection rate 26% for quiescent clump is preliminary, because the sample of quiescent clumps is small. A statistical relation between the outflow and clump masses for our sample is log(M_out_/M_{sun}_)=(-1.1+/-0.21)+(0.9+/-0.07)log(M_clump_/M_{sun}_). The detection rate of outflows and the outflow mass-loss rate show an increase with increasing M_clump_, L_bol_, N_H_2_, and T_dust_, which indicates that clumps with outflow with higher parameter values are at a more advanced evolutionary stage. The outflow mechanical force increases with increasing bolometric luminosities. No clear evidence has yet been found that higher-mass outflows have different launching conditions than low-mass outflows. Description: In this paper, we select 770 compact clumps from the APEX Telescope Large Area Survey of the Galaxy (ATLASGAL; Schuller+ 2009A&A...504..415S) with relatively strong CO(3-2) emission in the CO High Resolution Survey (COHRS; Dempsey+ 2013ApJS..209....8D). ATLASGAL has a Full Width at Half Maximum (FWHM) beam size of 19.2", and the typical pointing rms error is ~4arcsec at 345GHz. The survey sensitivity of 0.3-0.5Jy/beam (5{omega}) allows the detection of all cold dense clumps (<25K) with masses >=1000M_{sun}_ out to a heliocentric distance of 20kpc (Urquhart+ 2014, J/A+A/568/41). A total of 10163 compact clumps have been detected in the region |l|<60{deg} and |b|<1.5{deg}, and (Urquhart+ 2018, J/MNRAS/473/1059) present the detailed physical properties of these massive star-forming (MSF) clumps. COHRS has been taken using the Heterodyne Array Receiver Programme on the James Clerk Maxwell telescope (JCMT) in Hawaii. The survey has an angular resolution of 13.8" and an approximate rms of ~2K per 0.42km/s channel. At this frequency, the main-beam efficiency is 0.61. File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file table1.dat 54 770 Physical properties (from Urquhart+, 2018, J/MNRAS/473/1059) of the 770 ATLASGAL clumps to be searched for outflows table2.dat 39 84 Integrated intensity contour levels for blueshifted and redshifted emissions table3.dat 90 84 Outflow properties of the blue and red lobes for 84 ATLASGAL clumps -------------------------------------------------------------------------------- See also: J/A+A/417/615 : Maser and outflows in UC HII region (Codella+, 2004) J/A+A/426/503 : Catalogue of high velocity molecular outflows (Wu+ 2004) J/A+A/472/187 : 12CO outflows towards subm cores in Perseus (Hatchell+,2007) J/MNRAS/404/661 : Young stellar outflows near-IR imaging (Varricatt+ 2010) J/MNRAS/418/2121 : CO 3-2 observations of outflows in W5 (Ginsburg+, 2011) J/A+A/540/A113 : Starless clumps in ATLASGAL (Tackenberg+, 2012) J/A+A/557/A94 : SiO and HCO+ mass molecular outflows (Sanchez-Monge+, 2013) J/A+A/572/A40 : Outflow of H2 gas from NGC3256 (Emonts+, 2014) J/MNRAS/443/1555 : ATLASGAL massive star forming clumps (Urquhart+, 2014) J/MNRAS/444/566 : Methanol maser associated outflows (de Villiers+, 2014) J/A+A/568/41 : ATLASGAL Compact Source Catalog: 280