159 citations · 592 across the 11 of their papers we have counts for
11 papers
Are massive dense clumps truly sub-virial? A new analysis using Gould Belt ammonia data
Ayushi Singh, Christopher D. Matzner, Rachel K. Friesen +21
Dynamical studies of dense structures within molecular clouds often conclude that the most massive clumps contain too little kinetic energy for virial equilibrium, unless they are…
Evolutionary view through the starless cores in Taurus: deuteration in TMC 1-C and TMC 1-CP
D. Navarro-Almaida, A. Fuente, L. Majumdar +11
The chemical and physical evolution of starless and pre-stellar cores are of paramount importance to understanding the process of star formation. The Taurus Molecular Cloud cores T…
Ubiquitous supersonic component in L1688 coherent cores
Spandan Choudhury, Jaime E. Pineda, Paola Caselli +15
Context : Star formation takes place in cold dense cores in molecular clouds. Earlier observations have found that dense cores exhibit subsonic non-thermal velocity dispersions. In…
The Green Bank Ammonia Survey: A Virial Analysis of Gould Belt Clouds in Data Release 1
Ronan Kerr, Helen Kirk, James Di Francesco +14
We perform a virial analysis of starless dense cores in three nearby star-forming regions : L1688 in Ophiuchus, NGC 1333 in Perseus, and B18 in Taurus. Our analysis takes advantage…
A study of the -/- ratio in low-mass star forming regions
J. Chantzos, S. Spezzano, P. Caselli +4
We use the deuteration of - to probe the physical parameters of starless and protostellar cores, related to their evolutionary states, and compare it to the…
Seeds of Life in Space (SOLIS). III. Zooming into the methanol peak of the pre-stellar core L1544
Anna Punanova, Paola Caselli, Siyi Feng +41
Towards the pre-stellar core L1544, the methanol (CHOH) emission forms an asymmetric ring around the core centre, where CHOH is mostly in solid form, with a clear peak 4000…
The Green Bank Ammonia Survey: Observations of Hierarchical Dense Gas Structures in Cepheus-L1251
Jared Keown, James Di Francesco, Helen Kirk +20
We use Green Bank Ammonia Survey observations of NH (1,1) and (2,2) emission with 32'' FWHM resolution from a ~ 10 pc portion of the Cepheus-L1251 molecular cloud to iden…
The Green Bank Ammonia Survey: Dense Cores Under Pressure in Orion A
Helen Kirk, Rachel K. Friesen, Jaime E. Pineda +21
We use gas temperature and velocity dispersion data from the Green Bank Ammonia Survey and core masses and sizes from the James Clerk Maxwell Telescope Gould Belt Survey to estimat…
Seeds of Life in Space (SOLIS) III. Formamide in protostellar shocks: evidence for gas-phase formation
C. Codella, C. Ceccarelli, P. Caselli +47
Context: Modern versions of the Miller-Urey experiment claim that formamide (NHCHO) could be the starting point for the formation of metabolic and genetic macromolecules. Intri…
Search for grain growth towards the center of L1544
A. Chacón-Tanarro, P. Caselli, L. Bizzocchi +4
In dense and cold molecular clouds dust grains are surrounded by thick icy mantles. It is however not clear if dust growth and coagulation take place before the switch-on of a prot…
The Green Bank Ammonia Survey (GAS): First Results of NH3 mapping the Gould Belt
Rachel K. Friesen, Jaime E. Pineda, Erik Rosolowsky +21
We present an overview of the first data release (DR1) and first-look science from the Green Bank Ammonia Survey (GAS). GAS is a Large Program at the Green Bank Telescope to map al…