53 citations · 242 across the 12 of their papers we have counts for
9 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…
A comparison of density structures of a star forming and a non-star-forming globule. DCld303.8-14.2 and Thumbprint Nebula
J. Kainulainen, K. Lehtinen, P. Vaisanen +2
We present a study of radial density structure of the star forming globule, DCld303.8-14.2 (DC303), and a non-star forming globule, Thumbprint Nebula (TPN), using near-infrared dat…
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…
ISO observations of 3 - 200 micron emission by three dust populations in an isolated local translucent cloud
M. G. Rawlings, M. Juvela, K. Mattila +2
We present ISOPHOT spectrophotometry of three positions within the isolated high latitude cirrus cloud G 300.2 - 16.8, spanning from the near- to far-infrared. The positions exhibi…
Morphology and kinematics of Lynds 1642
D. Russeil, M. Juvela, K. Lehtinen +2
The high latitude translucent molecular cloud L1642 has been mapped in the J=1-0 and J=2-1 transitions of 12CO, 13CO and C18O using the SEST radio telescope. We have analysed the m…
Unidentified Infrared Bands in the Interstellar Medium across the Galaxy
J. Kahanpaa, K. Mattila, K. Lehtinen +2
We present a set of 6-12 micron ISOPHOT-S spectra of the general interstellar medium of the Milky Way. This part of the spectrum is dominated by a series of strong, wide emission f…
Centimetre continuum emission from young stellar objects in Cederblad 110
K. Lehtinen, J. Harju, S. Kontinen +1
The low-mass star formation region associated with the reflection nebula Cederblad 110 in the Chamaeleon I cloud was mapped with the Australian Telescope Compact Array (ATCA) at 6…
Detection of widely distributed UIR band emission in the disk of NGC 891
K. Mattila, K. Lehtinen, D. Lemke
The spectrum of the unidentified infrared (UIR) emission bands between 5.9 and 11.7 [micro]m has been observed for the first time in the disk of an external galaxy. We have used th…