CH AS A MOLECULAR GAS TRACER AND C-SHOCK TRACER ACROSS A MOLECULAR CLOUD BOUNDARY IN TAURUS

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Is HCN a True Tracer of Dense Molecular Gas in LIRGs and ULIRGs?

We present the results of the first HCO survey probing the dense molecular gas content of a sample of 16 luminous and ultraluminous infrared galaxies (LIRGs and ULIRGs). Previous work, based on HCN(1–0) observations, had shown that LIRGs and ULIRGs posses a significantly higher fraction of dense molecular gas compared to normal galaxies. While the picture issued from HCO partly confirms this re...

متن کامل

HCN versus HCO as dense molecular gas mass tracer in Luminous Infrared Galaxies

It has been recently argued that the HCN J=1–0 line emission may not be an unbiased tracer of dense molecular gas (n & 10 cm) in Luminous Infrared Galaxies (LIRGs: LFIR > 10 11 L⊙) and HCO + J=1–0 may constitute a better tracer instead (Graciá-Carpio et al. 2006), casting doubt into earlier claims supporting the former as a good tracer of such gas (Gao & Solomon 2004; Wu et al. 2006). In this p...

متن کامل

Residence Times in a Hypersaline Creek: Using Salinity as a Tracer

Spatial measurements of conductivity, temperature and depth were used to study salinity variations along the principal channels of the tidal hypersaline creek network in the vicinity of Bushehr Port, Persian Gulf during three 25- tidal cycles in both warm and cold months. Salinity variations and tidal fluctuations were out of phase throughout the short inverse estuary. The salinity values in...

متن کامل

Ubiquitous argonium (ArH) in the diffuse interstellar medium: A molecular tracer of almost purely atomic gas

Aims. We describe the assignment of a previously unidentified interstellar absorption line to ArH and discuss its relevance in the context of hydride absorption in diffuse gas with a low H2 fraction. The confidence of the assignment to ArH is discussed, and the column densities are determined toward several lines of sight. The results are then discussed in the framework of chemical models, with...

متن کامل

Molecular abundance ratios as a tracer of accelerated collapse in regions of high mass star formation?

Recent observations suggest that the behaviour of tracer species such as N2H + and CS is significantly different in regions of high and low mass star formation. In the latter, N2H + is a good tracer of mass, while CS is not. Observations show the reverse to be true in high-mass star formation regions. We use a computational chemical model to show that the abundances of these and other species m...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: The Astrophysical Journal

سال: 2016

ISSN: 1538-4357

DOI: 10.3847/1538-4357/833/1/90