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Seed of Life in Space (SOLIS) XI. First measurement of nitrogen fractionation in shocked clumps of the L1157 protostellar outflow
M. Benedettini, S. Viti, C. Codella +11
The isotopic ratio of nitrogen presents a wide range of values in the Solar System and in star forming system whose origin is still unclear. Chemical reactions in the gas phase are…
SiO emission as a probe of Cloud-Cloud Collisions in Infrared Dark Clouds
G. Cosentino, I. Jiménez-Serra, J. D. Henshaw +6
Infrared Dark Clouds (IRDCs) are very dense and highly extincted regions that host the initial conditions of star and stellar cluster formation. It is crucial to study the kinemati…
The GUAPOS project: G31.41+0.31 Unbiased ALMA sPectral Observational Survey -- I. Isomers of CHO
C. Mininni, M. T. Beltrán, V. M. Rivilla +10
Understanding the degree of chemical complexity that can be reached in star-forming regions, together with the identification of precursors of the building blocks of life in the in…
A chemical study of carbon fractionation in external galaxies
Serena Viti, Francesco Fontani, Izaskun Jimenez-Serra
In the interstellar medium carbon exists in the form of two stable isotopes C and C and their ratio is a good indicator of nucleosynthesis in galaxies. However, chemi…
FAUST I. The hot corino at the heart of the prototypical Class I protostar L1551 IRS5
E. Bianchi, C. J. Chandler, C. Ceccarelli +63
The study of hot corinos in Solar-like protostars has been so far mostly limited to the Class 0 phase, hampering our understanding of their origin and evolution. In addition, recen…
Evolutionary study of complex organic molecules in high-mass star-forming regions
A. Coletta, F. Fontani, V. M. Rivilla +4
We have studied four complex organic molecules (COMs), methyl formate (), dimethyl ether (), formamide (), and ethyl cyanide (), towards a l…
DCN observations towards high-mass star-forming regions
V. M. Rivilla, L. Colzi, F. Fontani +5
We present the study of deuteration of cyanoacetylene (HCN) towards a sample of 28 high-mass star-forming cores divided into different evolutionary stages, from starless to evo…
Seeds of Life in Space (SOLIS). X. Interstellar Complex Organic Molecules in the NGC 1333 IRAS 4A outflows
M. De Simone, C. Codella, C. Ceccarelli +11
Aims: A unique environment to study how interstellar Complex Organic Molecules (iCOMs) can be formed is the shocked gas along low-mass protostellar outflows, as the dust mantles co…
Carbon isotopic fractionation in molecular clouds
L. Colzi, O. Sipilä, E. Roueff +2
C-fractionation has been studied from a theoretical point of view with different models of time-dependent chemistry, including both isotope-selective photodissociation and low-temp…
Seeds of Life in Space SOLIS. IX. Chemical segregation of and SO toward the low-mass protostellar shocked region of L1157
S. Feng, C. Codella, C. Ceccarelli +9
We present observations of SO and lines toward the shocked regions along the L1157 chemically rich outflow, taken in the context of the Seeds Of Life In Space IRAM-NOrth…
No nitrogen fractionation on 600 au scale in the Sun progenitor analogue OMC-2 FIR4
F. Fontani, G. Quaia, C. Ceccarelli +8
We show the first interferometric maps of the 14N/15N ratio obtained with the Atacama Large Millimeter Array (ALMA) towards the Solar-like forming protocluster OMC-2 FIR4. We obser…
Seeds of Life in Space (SOLIS).VII. Discovery of a cold dense methanol blob toward the L1521F VeLLO system
C. Favre, C. Vastel, I. Jimenez-Serra +40
The SOLIS (Seeds Of Life In Space) IRAM/NOEMA Large Program aims at studying a set of crucial complex organic molecules in a sample of sources, with well-known physical structure,…
Seeds of Life in Space (SOLIS). VI. Chemical evolution of sulfuretted species along the outflows driven by the low-mass protostellar binary NGC1333-IRAS4A
Vianney Taquet, Claudio Codella, Marta de Simone +8
Context. Low-mass protostars drive powerful molecular outflows that can be observed with mm and sub-mm telescopes. Various sulfuretted species are known to be bright in shocks and…
Seeds of Life in Space (SOLIS) V. Methanol and acetaldehyde in the protostellar jet-driven shocks L1157-B0 and B1
C. Codella, C. Ceccarelli, E. Bianchi +9
Aim: In the past, observations of protostellar shocks have been able to set constraints on the formation route of formamide (NH2CHO), exploiting its observed spatial distribution a…