Early results from a diagnostic 1.3 cm survey of massive young protostars

Crystal L. Brogan, Todd R. Hunter, Claudia J. Cyganowski, Remy Indebetouw, Rachel Friesen, Claire Chandler

Research output: Chapter in Book/Report/Conference proceedingConference contribution


We have used the recently-upgraded Karl G. Jansky Very Large Array (JVLA) to conduct a K-band (~24 GHz) study of 22 massive young stellar objects in 1.3 cm continuum and a comprehensive set of diagnostic lines.This survey is unique in that it samples a wide range of massive star formation signposts simultaneously for the first time. In this proceeding we present preliminary results for the 11 sources in the 2-4 kpc distance bin. We detect compact NH3 cores in all of the fields, with many showing emission up through the (6,6) transition.Maser emission in the 25 GHz CH3OH ladder is present in 7 of11 sources. We also detect non-thermal emission in the NH3(3,3) transition in 7 of 11 sources.
Original languageEnglish
Title of host publicationCosmic Masers -- from OH to H0
Subtitle of host publicationProceedings of the International Astronomical Union
Publication statusPublished - 1 Jul 2012


  • masers
  • stars: formation
  • ISM: jets and outflows
  • ISM: molecules
  • radio lines: ISM
  • radio continuum: ISM
  • infrared: ISM
  • submillimeter


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