Edge-on disk around the T Tauri star [MR81] Hα17 NE in Corona Australis
نویسندگان
چکیده
منابع مشابه
CONTINUUM AND CO/HCO+ EMISSION FROM THE DISK AROUND THE T TAURI STAR LkCa
We present Owens Valley Radio Observatory Millimeter Array 1⁄4 3:4 1:2 mm dust continuum and spectral line observations of the accretion disk encircling the T Tauri star LkCa 15. The 1.2 mm dust continuum emission is resolved and gives a minimum diameter of 190 AU and an inclination angle of 57 5 . There is a noticeable but, at present, poorly constrained decrease in the continuum spectral slop...
متن کاملThe Corona Australis Star Forming Region
At a distance of about 130 pc, the Corona Australis molecular cloud complex is one of the nearest regions with ongoing and/or recent star formation. It is a region with highly variable extinction of up to AV ∼ 45 mag, containing, at its core, the Coronet protostar cluster. There are now 55 known optically detected members, starting at late B spectral types. At the opposite end of the mass spect...
متن کاملA Long-lived Accretion Disk around a Lithium-depleted Binary T Tauri Star
We present a high dispersion optical spectrum of St 34 and identify the system as a spectroscopic binary with components of similar luminosity and temperature (both M3±0.5). Based on kinematics, signatures of accretion, and location on an H-R diagram, we conclude that St 34 is a classical T Tauri star belonging to the Taurus-Auriga T Association. Surprisingly, however, neither component of the ...
متن کاملHCO + ( J = 4 − 3 ) mapping of the molecular disk around IRS 7 in Corona Australis ?
Submillimetre HCO+(J = 4− 3) mapping observations of the immediate environs of the infrared source IRS 7 in Corona Australis have provided corroborative evidence for the existence of the rotating molecular disk detailed in our earlier paper. An improved estimate of 0.8M for the mass of the central protostar is obtained.
متن کاملA molecular disk and dense outflow in Corona Australis
The central region of the molecular outflow in the R Coronae Australis cloud was mapped in HCO+(J = 1 − 0), H13CO+(J = 1 − 0), HCO+(J = 3 − 2) and C18O(J = 2 − 1) with the SEST. In addition to the maps, selected positions were observed in SiO(J = 2 − 1, v = 0). The observations reveal a complex system consisting of a dense core, a rotating molecular disk around the infrared source IRS 7 and a d...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2009
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:200810730