Astronomy and Astrophysics – Astrophysics – Solar and Stellar Astrophysics
Scientific paper
2009-05-29
Astrophys.J.700:1440-1448,2009
Astronomy and Astrophysics
Astrophysics
Solar and Stellar Astrophysics
25 pages, 1 figure, accepted to ApJ
Scientific paper
10.1088/0004-637X/700/2/1440
Strong stellar magnetic fields are believed to truncate the inner accretion disks around young stars, redirecting the accreting material to the high latitude regions of the stellar surface. In the past few years, observations of strong stellar fields on T Tauri stars with field strengths in general agreement with the predictions of magnetospheric accretion theory have bolstered this picture. Currently, nothing is known about the magnetic field properties of younger, more embedded Class I young stellar objects (YSOs). It is believed that protostars accrete much of their final mass during the Class I phase, but the physics governing this process remains poorly understood. Here, we use high resolution near infrared spectra obtained with NIRSPEC on Keck and with Phoenix on Gemini South to measure the magnetic field properties of the Class I protostar WL 17. We find clear signatures of a strong stellar magnetic field. Analysis of this data suggests a surface average field strength of $2.9 \pm 0.43$ kG on WL 17. We present our field measurements and discuss how they fit with the general model of magnetospheric accretion in young stars.
Covey Kevin R.
Doppmann Greg W.
Greene Thomas P.
Johns-Krull Christopher M.
No associations
LandOfFree
First Magnetic Field Detection on a Class I Protostar does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with First Magnetic Field Detection on a Class I Protostar, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and First Magnetic Field Detection on a Class I Protostar will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-526819