Gravitationally Collapsed Objects of Very Low Mass

نویسندگان

چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Rotational Evolution of Very Low Mass Objects and Brown Dwarfs

The regulation of angular momentum is one of the key processes for our understanding of stellar evolution. The rotational evolution of solar-mass stars is mainly determined by the magnetic interaction with their circumstellar disk and angular momentum loss through stellar winds, and In contrast to solar-mass stars, very low mass (VLM) objects and brown dwarfs are believed to be fully convective...

متن کامل

Rotation and variability of young very low mass objects

Variability studies are an important tool to investigate key properties of stars and brown dwarfs. From photometric monitoring we are able to obtain information about rotation and magnetic activity, which are expected to change in the mass range below 0.3 solar masses, since these fully convective objects cannot host a solar-type dynamo. On the other hand, spectroscopic variability information ...

متن کامل

Spitzer Discovery of Very Low Luminosity Objects

The Spitzer Space Telescope allows for the first time to search systematically for very low luminosity (. 0.1 L⊙) objects (VeLLOs) associated with dense molecular cores. They may be the first candidate Class 0 sources with sub-stellar masses. We describe such a source in the dense molecular core L1148. VeLLO natal cores show properties that are unusual for star-forming cores. The low luminosity...

متن کامل

Accurate masses of very low mass stars : II The very low mass triple system Gl 866 ⋆

ASTRONOMY AND ASTROPHYSICS Accurate masses of very low mass stars: II The very low mass triple system Gl 866 Abstract. We present very accurate orbital parameters and mass measurements (2.4% accuracy) for the well known very low mass triple system Gl 866. We obtain first orbital elements for the short-period orbit and greatly improve the long period orbit. All three stars have masses close to 0...

متن کامل

Rotation and accretion of very low mass objects in the σ Ori cluster ⋆

We report on two photometric monitoring campaigns of Very Low Mass (VLM) objects in the young open cluster around σ Orionis. Our targets were pre-selected with multi-filter photometry in a field of 0.36 sqdeg. For 23 of these objects, spanning a mass range from 0.03 to 0.7M⊙, we detect periodic variability. Of these, 16 exhibit low-level variability, with amplitudes of less than 0.2 mag in the ...

متن کامل

ذخیره 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: Monthly Notices of the Royal Astronomical Society

سال: 1971

ISSN: 0035-8711,1365-2966

DOI: 10.1093/mnras/152.1.75