Preparing for LLAMA: astrochemistry of star forming regions i. on the origin of C-chain molecules and deuteration around protostars

• Grant number: 15/22254-0
• Support Opportunities: Scholarships abroad - Research Internship - Post-doctor
• Start date until: January 25, 2016
• End date until: July 01, 2016
• Field of knowledge: Physical Sciences and Mathematics - Astronomy - Astrophysics of the Interstellar Medium
• Principal Investigator: Jacques Raymond Daniel Lépine
• Grantee: Edgar Fabián Mendoza Rodríguez
• Supervisor: Bertrand Andre Le Floch
• Host Institution: Instituto de Astronomia, Geofísica e Ciências Atmosféricas (IAG). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Institution abroad: Institut de Planétologie et d’Astrophysique de Grenoble (IPAG), France
• Associated to the scholarship: 14/22095-6 - ACHEMOS: astrochemistry of our origins, a comprehensive study of the prebiotic chemistry in pre-stellar regions, BP.PD

Abstract

The emergence of molecular complexity in Sun-like star forming regions is one of the main questions of Molecular Astrophysics. Two ongoing IRAM Large Programs led by IPAG scientists, IRAM-30m/ASAI (Astrochemical Surveys At Iram; PIs, B. Lefloch & R. Bachiller, 380 hrs) and NOEMA/SOLIS (Seeds Of Life In Space; PIs, C. Ceccarelli & P. Caselli, 380 hrs), have been undertaken to address this question. The observations will consist of an unbiased spectral exploration of complex molecules in a sample of objects which covers the evolutionary processes from prestellar cores to protoplanetary discs. As members of these consortia, we are in charge of studying the physical conditions and chemical properties of carbon-chain molecules, their molecular growth and deuteration in the intermediate-mass Class 0 protostar Cepheus E. During our stay at IPAG, we will analyse the emission of the various cyanopolyynes (HC{2n + 1}N, n = 1, 2,...,5), model their emission and compare the results with chemical models in order to constrain their formation route around protostars.

Scientific publications

(7)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

LEFLOCH, B.; BUSQUET, G.; VITI, S.; VASTEL, C.; MENDOZA, E.; BENEDETTINI, M.; CODELLA, C.; PODIO, L.; SCHUTZER, A.; RIVERA-ORTIZ, P. R.; et al. HCN/HNC chemistry in shocks: a study of L1157-B1 with ASAI. Monthly Notices of the Royal Astronomical Society, v. 507, n. 1, p. 1034-1046, OCT 2021. (14/22095-6, 15/22254-0)

GAMA, D. R. G.; LEPINE, J. R. D.; MENDOZA, E.; WU, Y.; YUAN, J.. CO OBSERVATIONS AND INVESTIGATION OF TRIGGERED STAR FORMATION TOWARD THE N10 INFRARED BUBBLE AND SURROUNDINGS. ASTROPHYSICAL JOURNAL, v. 830, n. 2, OCT 20 2016. (14/22095-6, 15/22254-0)

AL-EDHARI, A. JABER; CECCARELLI, C.; KAHANE, C.; VITI, S.; BALUCANI, N.; CAUX, E.; FAURE, A.; LEFLOCH, B.; LIQUE, F.; MENDOZA, E.; et al. History of the solar-type protostar IRAS 16293-2422 as told by the cyanopolyynes. ASTRONOMY & ASTROPHYSICS, v. 597, p. 13-pg., 2017-01-01. (15/22254-0, 14/22095-6)

AL-EDHARI, A. JABER; CECCARELLI, C.; KAHANE, C.; VITI, S.; BALUCANI, N.; CAUX, E.; FAURE, A.; LEFLOCH, B.; LIQUE, F.; MENDOZA, E.; et al. History of the solar-type protostar IRAS 16293-2422 as told by the cyanopolyynes. Astronomy & Astrophysics, v. 597, JAN 2017. (14/22095-6, 15/22254-0)

MENDOZA, EDGAR; LEFLOCH, B.; CECCARELLI, C.; KAHANE, C.; JABER, A. A.; PODIO, L.; BENEDETTINI, M.; CODELLA, C.; VITI, S.; JIMENEZ-SERRA, I.; et al. A search for cyanopolyynes in L1157-B1. Monthly Notices of the Royal Astronomical Society, v. 475, n. 4, p. 5501-5512, APR 2018. (14/22095-6, 15/22254-0)

LEFLOCH, BERTRAND; VASTEL, C.; VITI, S.; JIMENEZ-SERRA, I.; CODELLA, C.; PODIO, L.; CECCARELLI, C.; MENDOZA, E.; LEPINE, J. R. D.; BACHILLER, R.. Phosphorus-bearing molecules in solar-type star-forming regions: first PO detection. Monthly Notices of the Royal Astronomical Society, v. 462, n. 4, p. 3937-3944, NOV 11 2016. (14/22095-6, 15/22254-0)

LEFLOCH, BERTRAND; BACHILLER, R.; CECCARELLI, C.; CERNICHARO, J.; CODELLA, C.; FUENTE, A.; KAHANE, C.; LOPEZ-SEPULCRE, A.; TAFALLA, M.; VASTEL, C.; et al. Astrochemical evolution along star formation: overview of the IRAM Large Program ASAI. Monthly Notices of the Royal Astronomical Society, v. 477, n. 4, p. 4792-4809, JUL 2018. (14/22095-6, 15/22254-0)