Browsing University of Hertfordshire by Author "Aalto, S."

Now showing items 1-6 of 6

    • ACA [CI] observations of the starburst galaxy NGC 253 

      Krips, M.; Martín, S.; Sakamoto, K.; Aalto, S.; Bisbas, T.~G.; Bolatto, A.~D.; Downes, D.; Eckart, A.; Feruglio, C.; García-Burillo, S.; Geach, J.; Greve, T.~R.; König, S.; Matsushita, S.; Neri, R.; Offner, S.; Peck, A.~B.; Viti, S.; Wagg, J. (2016-08-01)
      Context. Carbon monoxide (CO) is widely used as a tracer of the molecular gas in almost all types of environments. However, several shortcomings of CO complicate usaging it as H2 tracer, such as its optical depth effects, ...

    • Dense gas in the Galactic central molecular zone is warm and heated by turbulence 

      Ginsburg, A.; Henkel, C.; Ao, Y.; Riquelme, D.; Kauffmann, J.; Pillai, T.; Mills, E.~A.~C.; Requena-Torres, M.~A.; Immer, K.; Testi, L.; Ott, J.; Bally, J.; Battersby, C.; Darling, J.; Aalto, S.; Stanke, T.; Kendrew, S.; Kruijssen, J.~M.~D.; Longmore, S.; Guesten, R.; Menten, K.~M.; Dale, James (2016-01-26)
      Context. The Galactic center is the closest region where we can study star formation under extreme physical conditions like those in high-redshift galaxies. Aims. We measure the temperature of the dense gas in the central ...

    • LeMMINGs – I. The eMERLIN legacy survey of nearby galaxies. 1.5-GHz parsec-scale radio structures and cores 

      Baldi, R. D.; Williams, D.R.A.; McHardy, I.M.; Beswick, R.J.; Argo, M. K.; Dullo, B. T.; Knapen, J. H.; Brinks, Elias; Muxlow, T. W. B.; Aalto, S.; Alberdi, A.; Bendo, G. J.; Corbel, S.; Evans, R.; Fenech, D.M.; Green, D. A.; Klöckner, H. R; Körding, E.; Kharb, P.; Maccarone, T. J.; Martí-Vidal, I.; Mundell, C. G.; Panessa, F.; Peck, A. B.; Pérez-Torres, M. A.; Saikia, D. J.; Shankar, F.; Spencer, R. E.; Stevens, I. R.; Uttley, P.; Westcott, J. (2018-05-21)
      We present the first data release of high-resolution (≤0.2 arcsec) 1.5-GHz radio images of 103 nearby galaxies from the Palomar sample, observed with the eMERLIN array, as part of the LeMMINGs survey. This sample includes ...

    • LeMMINGs. II. The e-MERLIN legacy survey of nearby galaxies. The deepest radio view of the Palomar sample on parsec scale 

      Baldi, R. D.; Williams, D. R. A.; McHardy, I. M.; Beswick, R. J.; Brinks, E.; Dullo, B. T.; Knapen, J. H.; Argo, M. K.; Aalto, S.; Alberdi, A.; Baan, W. A.; Bendo, G. J.; Corbel, S.; Fenech, D. M.; Gallagher, J. S.; Green, D. A.; Kennicutt, R. C.; Klöckner, H. -R.; Körding, E.; Maccarone, T. J.; Muxlow, T. W. B.; Mundell, C. G.; Panessa, F.; Peck, A. B.; Pérez-Torres, M. A.; Romero-Cañizales, C.; Saikia, P.; Shankar, F.; Spencer, R. E.; Stevens, I. R.; Varenius, E.; Ward, M. J.; Yates, J. (2020-11-17)
      We present the second data release of high-resolution ($\leq0.2$ arcsec) 1.5-GHz radio images of 177 nearby galaxies from the Palomar sample, observed with the e-MERLIN array, as part of the LeMMINGs (Legacy e-MERLIN ...

    • LeMMINGs. III. The e-MERLIN Legacy Survey of the Palomar sample. Exploring the origin of nuclear radio emission in active and inactive galaxies through the [O III] -- radio connection 

      Baldi, R. D.; Williams, D. R. A.; Beswick, R. J.; McHardy, I.; Dullo, B. T.; Knapen, J. H.; Zanisi, L.; Argo, M. K.; Aalto, S.; Alberdi, A.; Baan, W. A.; Bendo, G. J.; Fenech, D. M.; Green, D. A.; Klöckner, H. -R.; Körding, E.; Maccarone, T. J.; Marcaide, J. M.; Mutie, I.; Panessa, F.; Pérez-Torres, M. A.; Romero-Cañizales, C.; Saikia, D. J.; Saikia, P.; Shankar, F.; Spencer, R. E.; Stevens, I. R.; Uttley, P.; Brinks, E.; Corbel, S.; Martí-Vidal, I.; Mundell, C. G.; Pahari, M.; Ward, M. J. (2021-12-01)
      What determines the nuclear radio emission in local galaxies? To address this question, we combine optical [O iii] line emission, robust black hole (BH) mass estimates, and high-resolution e-MERLIN 1.5-GHz data, from the ...

    • SKA studies of nearby galaxies : star-formation, accretion processes and molecular gas across all environments 

      Beswick, R. J.; Brinks, E.; Perez-Torres, M. A.; Richards, A. M. S.; Aalto, S.; Alberdi, A.; Argo, M.K.; Bemmel, I. van; Conway, J. E.; Dickinson, C.; Fenech, D. M.; Gray, M.D.; Klockner, H-R; Murphy, E. J.; Muxlow, T.W.B.; Peel, M.; Rushton, A. P.; Schinnerer, E. (2015-05-29)
      The SKA will be a transformational instrument in the study of our local Universe. In particular, by virtue of its high sensitivity (both to point sources and diffuse low surface brightness emission), angular resolution and ...