NGC 6334 and NGC 6357 Insights from spectroscopy of their OB star populations

0482410 - ASÚ 2018 RIV FR eng J - Článek v odborném periodiku
Russeil, D. - Adami, C. - Bouret, J.-C. - Hervé, Anthony - Parker, Q.A. - Zavagno, A. - Motte, F.
NGC 6334 and NGC 6357 Insights from spectroscopy of their OB star populations.
Astronomy & Astrophysics. Roč. 607, November (2017), A86/1-A86/32. ISSN 0004-6361. E-ISSN 1432-0746
Institucionální podpora: RVO:67985815
Klíčová slova: stars distances * HII regions * ISM
Obor OECD: Astronomy (including astrophysics,space science)
Impakt faktor: 5.565, rok: 2017

The formation of high-mass stars is still debated. For this reason, several projects such as Herschel-HOBYS are focussed on the study of the earliest phases of massive star formation. As a result, massive star-forming complexes such as NGC 6334 and NGC 6357 have been observed in the far-infrared to study their massive dense cores where massive stars are expected to form. However, to better characterise the environments of these cores we need to understand the previous massive star formation history. To better characterise the environment of these massive dense cores we study the previous high-mass star formation and how these stars act on their environments. This study is based on the spectral classification of the OB stars identified towards NGC 6334 and NGC 6357 with spectra taken with the AAOmega spectrograph on the Anglo-Australian Telescope (AAT). From the subsequent spectral classification of 109 stars across these regions we were able to evaluate the following: distance, age, mass, global star-forming efficiency (SFE), and star formation rate (SFR) of the regions. The physical conditions of the ionised gas for both complexes was also derived.
Trvalý link: http://hdl.handle.net/11104/0277817