Searching for jet rotation in Class 0/I sources observed with GEMINI/GNIRS

D. Coffey, F. Bacciotti, A. Chrysostomou, B. Nisini, C. Davis

    Research output: Contribution to journalArticlepeer-review

    11 Citations (Scopus)
    32 Downloads (Pure)

    Abstract

    In recent years, there has been a number of detections of gradients in the radial velocity profile across jets from young stars. The significance of these results is considerable. They may be interpreted as a signature of jet rotation about its symmetry axis, thereby representing the only existing observational indications supporting the theory that jets extract angular momentum from star-disk systems. However, the possibility that we are indeed observing jet rotation in pre-main sequence systems is undergoing active debate.
    Aims. To test the validity of a rotation argument, we must extend the survey to a larger sample, including younger sources.
    Methods. We present the latest results of a radial velocity analysis on jets from Class 0 and I sources, using high resolution data from the infrared spectrograph GNIRS on GEMINI South. We obtained infrared spectra of protostellar jets HH 34, HH 111-H, HH 212 NK1 and SK1.
    Results. The [Fe II] emission was unresolved in all cases and so Doppler shifts across the jet width could not be accessed. The H2 emission was resolved in all cases except HH 34. Doppler profiles across the molecular emission were obtained, and gradients in radial velocity of typically 3 km s-1 identified

    Original languageEnglish
    Article numberA40
    Number of pages9
    JournalAstronomy & Astrophysics
    Volume526
    DOIs
    Publication statusPublished - 1 Feb 2011

    Fingerprint

    Dive into the research topics of 'Searching for jet rotation in Class 0/I sources observed with GEMINI/GNIRS'. Together they form a unique fingerprint.

    Cite this