Angular momentum evolution of low-mass pre-main sequence stars via extreme coronal mass ejections
نویسندگان
چکیده
منابع مشابه
Angular momentum evolution of low-mass pre-main sequence stars via extreme coronal mass ejections
The angular momentum evolution of cool stars during the pre-main sequence phase of stellar evolution remains a major outstanding problem. Multiple processes are likely involved in the transfer of mass and angular momentum within and out of the star+disk system. The role of coronal mass ejections (CMEs), energetic events which shed mass and magnetic flux in the Sun, has yet to be fully explored ...
متن کاملA 10 M Test of Disk-regulated Angular Momentum among Low-mass Pre-main-sequence Stars
We summarize the results of our recent work testing the hypothesis of disk-regulated angular momentum among low-mass PMS stars. Contrary to some previous studies, we nd no connection between slow stellar rotation and the presence of near-IR signatures of disks among young (1 Myr) low-mass stars in Orion. We use 10 m photometry to test for the presence of inner-truncated disks among PMS stars la...
متن کاملThe angular momentum evolution of low-mass stars
We present a model for the evolution of surface rotation of stars in themass range from 0.5 to 1.1M , from their first appearance in theHRdiagramasTTauri stars up to the age of the Sun. The model is based on 3 assumptions: i) nearly solid-body rotation, ii) pre-main sequence disk locking, iii) wind braking. The initial conditions and the calibration of the braking law are completely determined ...
متن کاملThe Rotation of Low-Mass Pre-Main-Sequence Stars
Major photometric monitoring campaigns of star-forming regions in the past decade have provided rich rotation period distributions of pre-main-sequence stars. The rotation periods span more than an order of magnitude in period, with most falling between 1 and 10 days. Thus the broad rotation period distributions found in 100 Myr clusters are already established by an age of 1 Myr. The most rapi...
متن کاملCoronal Structure of Pre-Main Sequence Stars
The study of pre-main sequence stellar coronae is undertaken in many different wavelength regimes, with apparently conflicting results. X-ray studies of T Tauri stars suggest the presence of loops with a range of sizes ranging from less than a stellar radius to 10 stellar radii. Some of these stars show a clear rotational modulation in X-rays, but many do not and indeed the nature of this emiss...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Astronomische Nachrichten
سال: 2013
ISSN: 0004-6337
DOI: 10.1002/asna.201211778