High mass star formationProperties of NH3 clumps in Southern Galactic Plane: properties of NH3 clumps in Southern Galactic Plane

Shaila Akhter*, Maria R. Cunningham, Lisa Harvey-Smith, Mohammad Ali Nawaz, Paul A. Jones, Cormac Purcell, Andrew Walsh

*Corresponding author for this work

Research output: Contribution to journalConference paperpeer-review


Massive stars are some of the most important objects in the Universe, shaping the evolution of galaxies, creating chemical elements, and hence shaping the evolution of the Universe. However, the processes by which they form, and how they shape their environment during their birth processes, are not well understood. We are using NH3 data from the "The H2O Southern Galactic Plane Survey" (HOPS) to define the positions of dense cores/clumps of gas in the southern Galactic plane that are likely to form stars. We did a comparative study with different methods for finding clumps and found Fellwalker to be the best for this dataset. We detected ∼ 500 clumps with mean kinetic temperature ∼ 20 K and virial mass ∼ 680 solar masses.

Original languageEnglish
Article numberE2
Pages (from-to)1-2
Number of pages2
JournalProceedings of the International Astronomical Union
Issue number315
Publication statusPublished - 2016
Externally publishedYes
Event315th Symposium of the International Astronomical Union - Honolulu, United States
Duration: 3 Aug 20157 Aug 2015


  • star formation
  • interstellar medium
  • HOPS
  • molecular transitions

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