Magnetic activity and radial velocity filtering of young Suns: The weak-line T Tauri stars Par 1379 and Par 2244
نویسندگان
چکیده
منابع مشابه
Chromospheric Activity of Rosat Discovered Weak-lined T Tauri Stars
We have started a high resolution optical observation program dedicated to the study of chromospheric activity in weak-lined T Tauri stars (WTTS) recently discovered by the ROSAT All-Sky Survey (RASS). It is our purpose to quantify the phenomenology of the chromospheric activity of each star determining stellar surface fluxes in the more important chromospheric activity indicators (Ca ii H & K,...
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We construct models for the rotation rates of T Tauri stars whose spin is regulated by magnetic linkage between the star and a surrounding accretion disc. Our models utilise a time-dependent disc code to follow the accretion process and include the eeects of pre-main-sequence stellar evolution. We nd that the initial disc mass controls the evolution of the star-disc system. For suuciently massi...
متن کاملConstraining the Evolution of Molecular Gas in Weak-Line T-Tauri Stars 1. Motivation
The formation of planets from protoplanetary disks is greatly influenced by the presence or absence of gas in these disks. The mass and lifetime of gas in disks obviously constrains the mass and formation-time of gas-giant planets. Moreover, even trace amounts of gas can influence the evolutionary process of solid particles from submicron size to planetary sizes. A number of papers have recentl...
متن کاملMagnetic Accretion and Photopolarimetric Variability in Classical T Tauri Stars
We employ a Monte Carlo radiation transfer code to investigate the multiwavelength photopolarimetric variability arising from a spotted T Tauri star surrounded by a dusty circumstellar disk. Our aim is to assess the ability of the magnetic accretion model to explain the observed photopolarimetric variability of classical T Tauri stars, and to identify potentially useful observational diagnostic...
متن کاملNew discovery of weak-line T Tauri stars in high-Galactic latitude molecular clouds
Star formation efficiency in translucent molecular clouds has long been an unresolved and key issue in the field of low-mass star formation. In this paper, we report on the results of our survey for low-mass star formation in high-Galactic latitude molecular clouds, especially those of the translucent category, based on the ROSAT All-Sky Survey. Nine new weak-line T Tauri star candidates have b...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2017
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/stx2042