Browsing University of Hertfordshire by Author "Thompson, M. A."

Now showing items 1-20 of 31

    • ATLASGAL - environments of 6.7 GHz methanol masers 

      Urquhart, J.S.; Moore, T.J.T.; Schuller, F.; Wyrowski, F.; Menten, K. M.; Thompson, M. A.; Csengeri, T.; Walmsley, C.M.; Bronfman, L.; König, C. (2013-05-01)
      Using the 870 micron APEX Telescope large area survey of the Galaxy, we have identified 577 submillimetre continuum sources with masers from the methanol multibeam survey in the region 280deg lt ell lt 20deg; |b| lt 1deg.5 ...

    • ATLASGAL - properties of a complete sample of Galactic clumps 

      Urquhart, J.S.; Koenig, C.; Giannetti, A.; Leurini, S.; Moore, T. J. T.; Eden, D.~J.; Pillai, T.; Thompson, M. A.; Braiding, C.; Burton, M. G.; Csengeri, T.; Dempsey, J. T.; Figura, C.C.; Froebrich, D.; Menten, K.~M.; Schuller, F.; Smith, M. D.; Wyrowski, F. (2018-01-01)
      The APEX Telescope Large Area Survey of the Galaxy (ATLASGAL) is an unbiased 870 μm submillimetre survey of the inner Galactic plane (|ℓ| < 60° with |b| < 1.°5). It is the largest and most sensitive ground-based submillimetre ...

    • ATLASGAL -- physical parameters of dust clumps associated with 6.7 GHz methanol masers 

      Billington, S. J.; Urquhart, J. S.; Konig, C.; Moore, T. J. T.; Eden, D. J.; Breen, S. L.; Kim, W. -J.; Thompson, M. A.; Ellingsen, S. P.; Menten, K. M.; Wyrowski, F.; Leurini, S. (2019-12-01)
      We have constructed the largest sample of dust-associated class II 6.7 GHz methanol masers yet obtained. New measurements from the the Methanol MultiBeam (MMB) Survey were combined with the 870 $\mu$m APEX Telescope Large ...

    • ATLASGAL -- Relationship between dense star forming clumps and interstellar masers 

      Billington, S. J.; Urquhart, J. S.; König, C.; Beuther, H.; Breen, S. L.; Menten, K. M.; Campbell-White, J.; Ellingsen, S. P.; Thompson, M. A.; Moore, T. J. T.; Eden, D. J.; Kim, W. -J.; Leurini, S. (2020-09-29)
      We have used catalogues from several Galactic plane surveys and dedicated observations to investigate the relationship between various maser species and Galactic star forming clumps, as identified by the ATLASGAL survey. ...

    • ATLASGAL --- Molecular fingerprints of a sample of massive star forming clumps 

      Urquhart, J. S.; Figura, C.; Wyrowski, F.; Giannetti, A.; Kim, W. -J.; Wienen, M.; Leurini, S.; Pillai, T.; Csengeri, T.; Gibson, S. J.; Menten, K.; Moore, T. J. T.; Thompson, M. A. (2019-04-21)
      We have conducted a 3-mm molecular-line survey towards 570 high-mass star-forming clumps, using the Mopra telescope. The sample is selected from the 10 000 clumps identified by the ATLASGAL (APEX Telescope Large Area Survey ...

    • Beyond the Solar Circle - Trends in Massive Star Formation Between the Inner and Outer Galaxy 

      Djordjevic, J. O.; Thompson, M. A.; Uruqhart, J. S.; Forbrich, J. (2019-07-01)
      We have compiled the most complete compact and ultracompact HII region catalogue to date via multi-wavelength inspection of survey data. We utilise data from the recently available SASSy 850$\mu$m survey to identify massive ...

    • Characteristic scale of star formation. I. Clump formation efficiency on local scales 

      Eden, D. J.; Moore, T. J. T.; Plume, R.; Rigby, A. J.; Urquhart, J. S.; Marsh, K. A.; Peñaloza, C. H.; Clark, P. C.; Smith, M. W. L.; Tahani, K.; Ragan, S. E.; Thompson, M. A.; Johnstone, D.; Parsons, H.; Rani, R. (2020-10-16)
      We have used the ratio of column densities (CDR) derived independently from the 850-$\mu$m continuum JCMT Plane Survey (JPS) and the $^{13}$CO/C$^{18}$O $(J=3-2)$ Heterodyne Inner Milky Way Plane Survey (CHIMPS) to produce ...

    • CHIMPS2 : Survey description and $^{12}$CO emission in the Galactic Centre 

      Eden, D. J.; Moore, T. J. T.; Currie, M. J.; Rigby, A. J.; Rosolowsky, E.; Su, Y.; Kim, Kee-Tae; Parsons, H.; Morata, O.; Chen, H. -R.; Minamidani, T.; Park, Geumsook; Ragan, S. E.; Urquhart, J. S.; Rani, R.; Tahani, K.; Billington, S. J.; Deb, S.; Figura, C.; Fujiyoshi, T.; Joncas, G.; Liao, L. W.; Liu, T.; Ma, H.; Tuan-Anh, P.; Yun, Hyeong-Sik; Zhang, S.; Zhu, M.; Henshaw, J. D.; Longmore, S. N.; Kobayashi, M. I. N.; Thompson, M. A.; Ao, Y.; Campbell-White, J.; Ching, T. -C.; Chung, E. J.; Duarte-Cabral, A.; Fich, M.; Gao, Y.; Graves, S. F.; Jiang, X. -J.; Kemper, F.; Kuan, Y. -J.; Kwon, W.; Lee, C. W.; Lee, J. -E.; Liu, M.; Penaloza, C. H.; Peretto, N.; Phuong, N. T.; Pineda, J. E.; Plume, R.; Puspitaningrum, E.; Samal, M. R.; Soam, A.; Sun, Y.; Tang, X. D.; Traficante, A.; White, G. J.; Yan, C. -H.; Yang, A.; Yuan, J.; Yue, N.; Bemis, A.; Brunt, C. M.; Chen, Z.; Cho, J.; Clark, P. C.; Cyganowski, C. J.; Friberg, P.; Fuller, G. A.; Han, I.; Hoare, M. G.; Izumi, N.; Kim, H. -J.; Kim, J.; Kim, S.; Koch, E. W.; Kuno, N.; Lacialle, K. M.; Lai, S. -P.; Lee, H. Lee Y. -H.; Li, D. L.; Liu, S. -Y.; Mairs, S.; Oka, T.; Pan, Z.; Qian, L.; Scicluna, P.; Shi, C. -S.; Shi, H.; Srinivasan, S.; Tan, Q. -H.; Thomas, H. S.; Torii, K.; Trejo, A.; Umemoto, T.; Violino, G.; Wallstrom, S.; Wang, B.; Wu, Y.; Yuan, L.; Zhang, C.; Zhang, M.; Zhou, C.; Zhou, J. J. (2020-09-10)
      The latest generation of Galactic-plane surveys is enhancing our ability to study the effects of galactic environment upon the process of star formation. We present the first data from CO Heterodyne Inner Milky Way Plane ...

    • CHIMPS: Physical properties of molecular clumps across the inner Galaxy 

      Rigby, A. J.; Moore, T. J. T.; Eden, D. J.; Urquhart, J. S.; Ragan, S. E.; Peretto, N.; Plume, R.; Thompson, M. A.; Currie, M. J.; Park, G. (2019-12-01)
      The latest generation of high-angular-resolution unbiased Galactic plane surveys in molecular-gas tracers are enabling the interiors of molecular clouds to be studied across a range of environments. The CHIMPS survey ...

    • Cores in infrared dark clouds (IRDCs) seen in the Hi-GAL survey between l=300 degrees and 330 degrees 

      Wilcock, L.A.; Ward-Thompson, D.; Kirk, J.M.; Stamatellos, D.; Whitworth, A.; Elia, D.; Fuller, G.A.; DiGiorgio, A.; Griffin, M.J.; Molinari, S.; Martin, P.; Mottram, J. C.; Peretto, N.; Pestalozzi, M.; Schisano, E.; Plume, R.; Smith, H. A.; Thompson, M. A. (2012-05)
      We have used data taken as part of the Herschel infrared Galactic Plane survey (Hi-GAL) to study 3171 infrared dark cloud (IRDC) candidates that were identified in the mid-IR (8 mu m) by Spitzer (we refer to these as ...

    • The Curious Case of the “Heartworm” Nebula 

      Cotton, W. D.; Camilo, F.; Becker, W.; Condon, J. J.; Forbrich, J.; Heywood, I.; Hugo, B.; Legodi, S.; Mauch, T.; Predehl, P.; Slane, P.; Thompson, M. A. (2022-07-27)
      The curious Galactic features near G357.2−0.2 were observed with the MeerKAT radio interferometer array in the UHF and L bands (0.56–1.68 GHz). There are two possibly related features: a newly identified faint heart-shaped ...

    • Excited-state hydroxyl maser catalogue from the methanol multibeam survey -- I. Positions and Variability 

      Avison, A.; Quinn, L. J.; Fuller, G. A.; Caswell, J. L.; Green, J. A.; Breen, S. L.; Ellingsen, S. P.; Gray, M. D.; Pestalozzi, M.; Thompson, M. A.; Voronkov, M. A. (2016-09-01)
      We present the results of the first complete unbaised survey of the Galactic Plane for 6035-MHz excited-state hydroxyl masers undertaken as part of the Methanol Multibeam Survey. These observations cover the Galactic ...

    • Extreme star formation in the Milky Way: luminosity distributions of young stellar objects in W49A and W51 

      Eden, D. J.; Moore, T. J. T.; Urquhart, J. S.; Elia, D.; Plume, R.; Konig, C.; Baldeschi, A.; Schisano, E.; Rigby, A. J.; Morgan, L. K.; Thompson, M. A. (2018-07-01)
      We have compared the star-formation properties of the W49A and W51 regions by using far-infrared data from the Herschel infrared Galactic Plane Survey (Hi-GAL) and 850-μm observations from the James Clerk Maxwell Telescope ...

    • The G305 star-forming complex : a wide-area radio survey of ultracompact H ii regions 

      Hindson, Luke; Thompson, M. A.; Urquhart, J.S.; Faimali, A.; Clark, J. S.; Davies, B. (2012-04)
      We present wide-area radio continuum 5.5 and 8.8 GHz (5.5 and 3.4 cm) Australia Telescope Compact Array observations of the complex and rich massive star-forming region G305. The aim of this study is to perform an un-targeted ...

    • H2D+ in the High-Mass Star-Forming Region Cygnus X 

      Pillai, T.; Caselli, P.; Kauffmann, J.; Zhang, Q.; Thompson, M. A.; Lis, D. C. (2012-06-01)
      H2D+ is a primary ion that dominates the gas-phase chemistry of cold dense gas. Therefore, it is hailed as a unique tool in probing the earliest, prestellar phase of star formation. Observationally, its abundance and ...

    • H2O Southern Galactic Plane Survey (HOPS) : Paper III - Properties of Dense Molecular Gas across the Inner Milky Way 

      Longmore, S.~N.; Walsh, A.J.; Purcell, C.R.; Burke, D. J.; Henshaw, J.~D.; Walker, D.; Urquhart, J.S.; Barnes, A. T.; Whiting, M.; Burton, M. G.; Breen, S.L.; Britton, T.; Brooks, K.J.; Cunningham, Maria R.; Green, J. A.; Harvey-Smith, L.; Hindson, L.; Hoare, M.G.; Indermuehle, B.; Jones, P. A.; Tsiolas, N.; Lowe, V.; Moore, T. J. T.; Thompson, M. A.; Voronkov, M. A. (2017-09-01)
      The H2O Southern Galactic Plane Survey (HOPS) has mapped 100 square degrees of the Galactic plane for water masers and thermal molecular line emission using the 22-m Mopra telescope. We describe the automated spectral-line ...

    • The Herschel-ATLAS Data Release 1 Paper II : Multi-wavelength counterparts to submillimetre sources 

      Bourne, N.; Dunne, L.; Maddox, S. J.; Dye, S.; Furlanetto, C.; Hoyos, C.; Smith, D. J. B.; Eales, S.; Smith, M. W. L.; Valiante, E.; Alpaslan, M.; Andrae, E.; Baldry, I. K.; Cluver, M. E.; Cooray, A.; Driver, S. P.; Dunlop, J. S.; Grootes, M. W.; Ivison, R. J.; Jarrett, T. H.; Liske, J.; Madore, B. F.; Popescu, C. C.; Robotham, A. G.; Rowlands, K.; Seibert, M.; Thompson, M. A.; Tuffs, R. J.; Viaene, S.; Wright, A. H. (2016-10-21)
      This paper is the second in a pair of articles presenting data release 1 (DR1) of the Herschel Astrophysical Terahertz Large Area Survey (H-ATLAS), the largest single open-time key project carried out with the Herschel ...

    • The Hi-GAL compact source catalogue – I. The physical properties of the clumps in the inner Galaxy (−71. ◦ 0 < ℓ < 67.◦ 0) 

      Elia, Davide; Molinari, S.; Schisano, E.; Pestalozzi, M.; Pezzuto, S.; Merello, M.; Noriega-Crespo, A.; Moore, T. J.T.; Russeil, D.; Mottram, J.~C.; Paladini, R.; Strafella, F.; Benedettini, M.; Bernard, J.P.; Giorgio, Anna Di; Eden, D.~J.; Fukui, Y.; Plume, R.; Bally, J.; Martin, Gary P; Ragan, S. E.; Jaffa, S. E.; Motte, F.; Olmi, L.; Schneider, N.; Testi, L.; Wyrowski, F.; Zavagno, A.; Calzoletti, L.; Faustini, F.; Natoli, P.; Palmeirim, P.; Piacentini, F.; Piazzo, L.; Pilbratt, G. L.; Polychroni, D.; Baldeschi, A.; Beltrán, M.~T.; Billot, N.; Cambrésy, L.; Cesaroni, R.; García-Lario, P.; Hoare, M.G.; Huang, M.; Joncas, G.; Liu, S.~J.; Maiolo, B. M. T.; Marsh, K. A.; Maruccia, Y.; Mège, P.; Peretto, N.; Rygl, K. L. J.; Schilke, P.; Thompson, M. A.; Traficante, A.; Umana, G.; Veneziani, M.; Ward-Thompson, D.; Whitworth, A. P.; Arab, H.; Bandieramonte, M.; Becciani, U.; Brescia, M.; Buemi, C.; Bufano, F.; Butora, R.; Cavuoti, S.; Costa, Ana Margarida; Fiorellino, E.; Hajnal, A.; Hayakawa, T.; Kacsuk, P.; Leto, P.; Li Causi, G.; Marchili, N.; Martinavarro-Armengol, S.; Mercurio, A.; Molinaro, M.; Riccio, G.; Sano, H.; Sciacca, E.; Tachihara, K.; Torii, K.; Trigilio, C.; Vitello, F.; Yamamoto, H. (2017-10-11)
      Hi-GAL (Herschel InfraRed Galactic Plane Survey) is a large-scale survey of the Galactic plane, performed with Herschel in five infrared continuum bands between 70 and 500 µm. We present a band-merged catalogue of spatially ...

    • Hi-GAL, the Herschel infrared Galactic Plane Survey : photometric maps and compact source catalogues. First data release for Inner Milky Way: +68°> l > -70° 

      Molinari, S.; Schisano, E.; Elia, D.; Pestalozzi, M.; Traficante, A.; Pezzuto, S.; Swinyard, B. M.; Noriega-Crespo, A.; Bally, J.; Moore, T. J. T.; Plume, R.; Zavagno, A.; Giorgio, A. M. di; Liu, S. J.; Pilbratt, G. L.; Mottram, J. C.; Russeil, D.; Piazzo, L.; Veneziani, M.; Benedettini, M.; Calzoletti, L.; Faustini, F.; Natoli, P.; Piacentini, F.; Merello, M.; Palmese, A.; Grande, R. Del; Polychroni, D.; Rygl, K. L. J.; Polenta, G.; Barlow, M. J.; Bernard, J. -P.; Martin, P. G.; Testi, L.; Ali, B.; Andrè, P.; Beltrán, M. T.; Billot, N.; Brunt, C.; Carey, S.; Cesaroni, R.; Compiègne, M.; Eden, D.; Fukui, Y.; Garcia-Lario, P.; Hoare, M. G.; Huang, M.; Joncas, G.; Lim, T. L.; Lord, S. D.; Martinavarro-Armengol, S.; Motte, F.; Paladini, R.; Paradis, D.; Peretto, N.; Robitaille, T.; Schilke, P.; Schneider, N.; Schulz, B.; Sibthorpe, B.; Strafella, F.; Thompson, M. A.; Umana, G.; Ward-Thompson, D.; Wyrowski, F. (2016-07-04)
      (Abridged) We present the first public release of high-quality data products (DR1) from Hi-GAL, the {\em Herschel} infrared Galactic Plane Survey. Hi-GAL is the keystone of a suite of continuum Galactic Plane surveys from ...

    • Highly variable young massive stars in ATLASGAL clumps 

      Kumar, M. S. N.; Contreras-Pena, C.; Lucas, P. W.; Thompson, M. A. (2016-12-05)
      High-amplitude variability in Young Stellar Objects (YSOs) is usually associated with episodic accretion events. It has not been observed so far in massive YSOs. Here, the high-amplitude variable star sample of ContrerasPena ...