Cold DCO(+) cores and protostars in the warm Rho Ophiuchi cloud

Abstract

view Abstract Citations (143) References (51) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Cold DCO + Cores and Protostars in the Warm rho Ophiuchi Cloud Loren, Robert B. ; Wootten, Alwyn ; Wilking, Bruce A. Abstract The decrease of DCO(+) abundance with elevation of a cloud's T(K) is used to identify a cluster of a dozen of the coldest, youngest dense cores embedded in the L1688, L1689, and L1709 clouds in the Rho Ophiuchi complex. Most of the cores in L1688 have T(K) = 12-14 K, about half that indicated by CO throughout L1688. Ten cold dust shell, protostellar IR point sources are embedded within these cores. Not every DCO(+) core contains a protostar, but every protostar with a steep spectral index is found in close association with DCO(+) emission. The rotational axes for all of the Rho Oph DCO(+) cores are parallel to the ambient magnetic field, regardless of whether a core is elongated parallel or perpendicular to the direction of the magnetic field. In the Taurus complex the ambient magnetic field is perpendicular to the axes of the major filaments and will inhibit further concentration of material. Publication: The Astrophysical Journal Pub Date: December 1990 DOI: 10.1086/169480 Bibcode: 1990ApJ...365..269L Keywords: Deuterium Compounds; Formyl Ions; Ophiuchi Clouds; Protostars; Stellar Cores; Interstellar Magnetic Fields; Star Formation; Stellar Envelopes; Astrophysics; INTERSTELLAR: MAGNETIC FIELDS; INTERSTELLAR: MOLECULES; NEBULAE: INDIVIDUAL NAME: RHO OPHIUCHI; STARS: EVOLUTION; STARS: FORMATION full text sources ADS | data products SIMBAD (42)