A CENSUS OF YOUNG STARS AND BROWN DWARFS IN IC 348 AND NGC 1333
نویسندگان
چکیده
منابع مشابه
A Disk Census for Young Brown Dwarfs
Recent surveys have identified sub-stellar objects down to planetary masses in nearby star-forming regions. Reliable determination of the disk frequency in young brown dwarfs is of paramount importance to understanding their origin. Here we report the results of a systematic study of infrared L-band (3.8μm) disk excess in ∼50 spectroscopically confirmed objects near and below the sub-stellar bo...
متن کاملYoung stars and brown dwarfs surrounding
Aims. We look for new regions for the search of substellar objects. Methods. Two circular areas, 45 arcmin-radius each, centred on the young massive star systems Alnilam and Mintaka in the Orion Belt, have been explored. The regions are very young (less than 10 Ma), have low extinction, and are neighbours to σ Orionis (∼3 Ma), a young open cluster very rich in brown dwarfs and planetary-mass ob...
متن کاملThe Rotation of Young Low-Mass Stars and Brown Dwarfs
We review the current state of our knowledge concerning the rotation and angular momentum evolution of young stellar objects and brown dwarfs from a primarily observational view point. There has been a tremendous growth in the number of young, low-mass objects with measured rotation periods over the last five years, due to the application of wide field imagers on 1-2 m class telescopes. Periods...
متن کاملBrown Dwarfs and Cool Stars
We review the current picture of disks around cool stars and brown dwarfs, including disk fractions, mass estimates, disk structure and dispersal, accretion, dust composition, the debris disk phase. We discuss these in the framework of recent planet formation models. The study of disks around brown dwarfs and cool stars allows testing disk physics and planet formation processes in a parameter r...
متن کاملA census of very - low - mass stars and brown dwarfs in the σ Orionis cluster ⋆
Context. The knowledge of the initial mass function (IMF) in open clusters constitutes one way of constraining the formation of low-mass stars and brown dwarfs, along with the frequency of multiple systems and the properties of disks. Aims. The aim of the project is to determine as accurately as possible the shape of the mass function in the low-mass and substellar regimes in the σ Orionis clus...
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: The Astrophysical Journal
سال: 2016
ISSN: 1538-4357
DOI: 10.3847/0004-637x/827/1/52