Now showing items 1-5 of 5

    • A massive prestellar clump hosting no high-mass cores 

      Sanhueza, Patricio; Jackson, James; Zhang, Qizhou; Guzmán Fernández, Andrés; Lu, Xing; Stephens, Ian W.; Wang, Ke; Tatematsu, Ken'ichi (IOP Publishing, 2017-06-01)
      The infrared dark cloud (IRDC) G028.23-00.19 hosts a massive (1500M(circle dot)), cold (12 K), and 3.6-70 mu m IR dark clump (MM1) that has the potential to form high-mass stars. We observed this prestellar clump candidate ...
    • Far-Infrared Dust Temperatures and Column Densities of the MALT90 Molecular Clump Sample 

      Guzmán, Andrés E.; Sanhueza, Patricio; Contreras, Yanett; Smith, Howard A.; Jackson, James M.; Hoq, Sadia; Rathborne, Jill (IOP Publishing, 2015)
      We present dust column densities and dust temperatures for similar to 3000 young, high-mass molecular clumps from the Millimeter Astronomy Legacy Team 90 GHz survey, derived from adjusting single-temperature dust emission ...
    • Infall signatures in a prestellar core embedded in the high-mass 70 mu m Dark IRDC G331.372-00.116 

      Contreras, Yanett; Sanhueza, Patricio; Jackson, James M.; Guzmán, Andrés E.; Longmore, Steven; Garay Brignardello, Guido; Zhang, Qizhou; Quang, Nguyen-Lu'o'Ng; Tatematsu, Ken'ichi; Nakamura, Fumitaka; Sakai, Takeshi; Ohashi, Satoshi; Liu, Tie; Saito, Masao; Gómez, Laura; Rathborne, Jill; Whitaker, Scott (IOP Publishing, 2018-07)
      Using Galactic Plane surveys, we have selected a massive (1200M circle dot), cold (14 K) 3.6-70 mu m dark IRDC, G331.372-00.116. This infrared dark cloud (IRDC) has the potential to form high-mass stars, and given the ...
    • Linking dense gas from the milky way to external galaxies 

      Stephens, Ian W.; Jackson, James M.; Whitaker, J. Scott; Contreras, Yanett; Guzmán, Andres E.; Sanhueza, Patricio; Foster, Jonathan B.; Rathborne, Jill (IOP Publishing, 2016-06-10)
      In a survey of 65 galaxies, Gao & Solomon found a tight linear relation between the infrared luminosity (L-IR, a proxy for the star formation rate) and the HCN(1-0) luminosity (L-HCN). Wu et al. found that this relation ...
    • THE SPITZER SPECTROSCOPIC SURVEY OF THE SMALL MAGELLANIC CLOUD ((SMC)-M-4): PROBING THE PHYSICAL STATE OF POLYCYCLIC AROMATIC HYDROCARBONS IN A LOW-METALLICITY ENVIRONMENT 

      Sandstrom, Karin M.; Bolatto, Alberto; Bot, Caroline; Draine, B. T.; Ingalls, James G.; Israel, Frank P.; Jackson, James M.; Leroy, Adam K.; Li, Aigen; Rubio López, Mónica; Simon, Joshua D.; Smith, J. D. T.; Stanimirovic, Snezana; Tielens, A. G. G. M.; Loon, Jacco Th. van (IOP PUBLISHING LTD, 2012-01-01)
      We present results of mid-infrared spectroscopic mapping observations of six star-forming regions in the Small Magellanic Cloud (SMC) from the Spitzer Spectroscopic Survey of the SMC ((SMC)-M-4). We detect the mid-IR ...