Comparison of hot cores using millimetre spectroscopy

master's thesis

• Title (croatian): Usporedba vrućih jezgri pomoću milimetarske spektroskopije
• Author: Krešimir Tisanić
• Mentor: Vernesa Smolčić (mentor)
• Committee member: Vernesa Smolčić (predsjednik povjerenstva)
• Committee member: Hrvoje Buljan (član povjerenstva)
• Committee member: Mirko Planinić (član povjerenstva)
• Committee member: Krešimir Pavlovski (član povjerenstva)
• Committee member: Ivica Smolić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Physics); Zagreb
• Defense date and country: 2016-05-09, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Physics; Astronomy and Astrophysics

Abstract

We have analyzed milimeter-wave spectra of the hot cores G327.3-0.6 and NGC 6334 I, which were taken by the SHeFI instrument at the APEX telescope in Chile. Rotational and population diagrams were used to derive the gas kinetic temperatures and column densities of the detected molecules in the sources. We have identified the following molecular species in the observed hot cores: acetone, carbonyl sulfide, dimethyl ether, ethanol, ethyl cyanide, formic acid, ketene, methanol, methyl acetylene, methylamine, methyl cyanide, methyl formate, sulfur dioxide, and vinyl cyanide along with some of their isotopologues.

Abstract (croatian)

Analizirali smo spektre vrućih jezgri G327.3-0.6 i NGC 6334 I u milimetarskom području koje su bile opažane pomoću SHeFI instrumenta na APEX teleskopu u Čileu. Rotacijski i populacijski dijagrami su korišteni pri odredivanju kinetičkih temperatura plina i stupčanih gustoća detektiranih molekula u izvorima. Identificirali smo sljedeće molekularne vrste u promatranim vrućim jezgrama: aceton, karbonil sulfid, dimetil eter, etanol, etil cijanid, mravlju kiselinu, keten, metanol, metil acetilen, metilamin, metil cijanid, metil format, sumporov dioskid, vinil cijanid kao i neke od njihovih izotopologa.

• Keywords: molecular spectroscopy; high-mass star formation; massive young stellar objects (MYSOs); hot cores; individual: G327.3-0.6; NGC 6334 I; rotational diagram method; population diagram
• Keywords (croatian): molekularna spektroskopija; nastanak zvijezda velike mase; masivni mladni zvjezdani objekti (MYSO); vruće jezgre; izvori: G327.3-0.6; NGC 6334 I; metoda rotacijskih dijagrama; metoda populacijskih dijagrama
• Language: english
• URN:NBN: urn:nbn:hr:217:550235
• Study programme: Title: Physics; specializations in: Research; Course: Research; Study programme type: university; Study level: integrated undergraduate and graduate; Academic / professional title: magistar/magistra fizike (magistar/magistra fizike)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2017-03-05 12:17:47