The densest prestellar condensations: H2CO Studies of? Oph B1

Autor:	S. Rucinski, E. Bloemhof, Mary Barsony, Dimitar Sasselov, L. A. Nyman
Rok vydání:	1995
Předmět:	Physics Space and Planetary Science Star formation Infrared Resolution (electron density) Astronomy Astronomy and Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Kinematics Astrophysics Astrophysics::Galaxy Astrophysics Cosmology Line (formation)
Zdroj:	Astrophysics and Space Science. 224:51-54
ISSN:	1572-946X 0004-640X
DOI:	10.1007/bf00667820
Popis:	The ρ Oph B1 cloud core region is unique in that it exhibits 2-cm H2CO line emission over a substantial area (indicating gas densities ≥ 106 cm-3), while lacking any known embedded infrared sources. Subsequent H2CO studies at the VLA and the JCMT have not provided a consistent model of the gas structure and kinematics. Here, we present the first high-velocity resolution maps in the 218 GHz and 352 GHz transitions of H2CO. Our multi-transition study, at velocity and spatial resolutions comparable to existing VLA data, has proven crucial to forming a coherent picture of the gas kinematics.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0a12f9237cf67d38d7e146b5bd797b30 https://doi.org/10.1007/bf00667820 Zobrazit plný text záznamu Full text from SpringerLink