52 citations · 133 across the 6 of their papers we have counts for
5 papers · 1 filter
Detection of 6 K gas in Ophiuchus D
J. Harju, M. Juvela, S. Schlemmer +3
Cold cores in interstellar molecular clouds represent the very first phase in star formation. The physical conditions of these objects are studied in order to understand how molecu…
The structure of the cometary globule CG 12: a high latitude star forming region
L. K. Haikala, M. Olberg
The structure of the high galactic latitude Cometary Globule 12 (CG 12) has been investigated by means of radio molecular line observations. Detailed, high signal to noise ratio ma…
SiO and CH3CCH abundances and dust emission in high-mass star-forming cores
O. Miettinen, J. Harju, L. K. Haikala +1
Aims. The main goal of the present study is to determine the fractional SiO abundance in high-mass star-forming cores, and to investigate its dependence on the physical conditions.…
C18O (3-2) observations of the Cometary Globule CG 12: a cold core and a C18O hot spot
L. K. Haikala, M. Juvela, J. Harju +3
The feasibility of observing the C18O (3-2) spectral line in cold clouds with the APEX telescope has been tested. As the line at 329.330 GHz lies in the wing of a strong atmospheri…
Detection of H2D+ in a massive prestellar core in Orion B
J. Harju, L. K. Haikala, K. Lehtinen +6
Aims. The purpose of this study is to examine the prediction that the deuterated H3+ ion, H2D+, can be found exclusively in the coldest regions of molecular cloud cores. This is al…