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Search for massive protostellar candidates in the southern hemisphere: I. Association with dense gas
F. Fontani, M. T. Beltran, J. Brand +4
(Abridged) We have observed CS and C17O lines, and 1.2 mm cont. emission towards a sample of 130 high-mass protostellar candidates with DEC<-30 deg. This is the first step of the s…
Diamonds in HD 97048
E. Habart, L. Testi, A. Natta +1
We present adaptive optics high angular resolution ($\sim0\farcs$1) spectroscopic observations in the 3 m region of the Herbig Ae/Be star HD 97048. For the first time, we spatia…
Accretion in Brown Dwarfs: an Infrared View
A. Natta, L. Testi, J. Muzerolle +3
This paper presents a study of the accretion properties of 19 very low mass objects (Mstar .01-0.1 Msun) in the regions Chamaeleon I and rho-Oph For 8 objects we obtained high reso…
Nature of two massive protostellar candidates: IRAs 21307+5049 and IRAS 22172+5549
F. Fontani, R. Cesaroni, L. Testi +4
We present observations of continuum and molecular lines towards the protostar candidates IRAS 21307+5049 and IRAS 22172+5549. Single-dish maps in the 12CO(2--1), C18O(2--1), HCO+(…
The Origin of Massive O-type Field Stars. Part I: A Search for Clusters
W. J. de Wit, L. Testi, F. Palla +2
We present a study aimed at clarifying the birthplace for 43 massive O-type field stars. In this first paper we present the observational part: a search for stellar clusters near t…
Detection of Knots and Jets in IRAS 06061+2151
B. G. Anandarao, A. Chakraborty, D. K. Ojha +1
We report detection of a Young Stellar Object with an evidence for an outflow in the form of knots in the molecular hydrogen emission line (2.121 micron) towards the massive star f…