scholarly journals Ks-band, 2.14-µm Imaging of Southern Massive Star Formation Regions Traced by Methanol Masers

2009 ◽  
Vol 26 (4) ◽  
pp. 439-447 ◽  
Author(s):  
S. N. Longmore ◽  
M. G. Burton
Keyword(s):  
Star Formation ◽  
Point Source ◽  
Massive Star ◽  
Wide Field ◽  
Stellar Content ◽  
Massive Star Formation ◽  
Function Fitting ◽  
Spread Function ◽  
Methanol Masers ◽  
Star Formation Regions

AbstractWe present deep, wide-field, Ks-band (2.14-μm) images towards 87 southern massive star formation regions traced by methanol maser emission. Using point-spread function fitting, we generate 2.14-μm point source catalogues (PSCs) towards each of the regions. For the regions between 10° < l < 350° and |b| < 1, we match the 2.14-μm sources with the GLIMPSE point source catalogue to generate a combined 2.14- to 8.0-μm point source catalogue. We provide this data for the astronomical community to utilise in studies of the stellar content of embedded clusters.

scholarly journals WEAK AND COMPACT RADIO EMISSION IN EARLY MASSIVE STAR FORMATION REGIONS: AN IONIZED JET TOWARD G11.11–0.12P1

2014 ◽  
Vol 796 (2) ◽  
pp. 130 ◽  
Author(s):  
V. Rosero ◽  
P. Hofner ◽  
M. McCoy ◽  
S. Kurtz ◽  
K. M. Menten ◽  
...  
Keyword(s):  
Star Formation ◽  
Radio Emission ◽  
Massive Star ◽  
Massive Star Formation ◽  
Star Formation Regions

High-Velocity H 2 O Masers Associated Massive Star Formation Regions

2001 ◽  
Vol 18 (12) ◽  
pp. 1663-1665 ◽  
Author(s):  
Xu Ye ◽  
Jiang Dong-Rong ◽  
Zheng Xing-Wu ◽  
Gu Min-Feng ◽  
Yu Zhi-Yao ◽  
...  
Keyword(s):  
Star Formation ◽  
High Velocity ◽  
Massive Star ◽  
Massive Star Formation ◽  
Star Formation Regions

scholarly journals Too large and overlooked? Extended free-free emission towards massive star formation regions

2009 ◽  
Vol 399 (2) ◽  
pp. 861-877 ◽  
Author(s):  
S. N. Longmore ◽  
M. G. Burton ◽  
E. Keto ◽  
S. Kurtz ◽  
A. J. Walsh
Keyword(s):  
Star Formation ◽  
Massive Star ◽  
Massive Star Formation ◽  
Star Formation Regions

scholarly journals A SiO J = 5 → 4 Survey Toward Massive Star Formation Regions

2019 ◽  
Vol 878 (1) ◽  
pp. 29 ◽  
Author(s):  
Shanghuo Li ◽  
Junzhi Wang ◽  
Min Fang ◽  
Qizhou Zhang ◽  
Fei Li ◽  
...  
Keyword(s):  
Star Formation ◽  
Massive Star ◽  
Massive Star Formation ◽  
Star Formation Regions

Supernovae and Massive Star Formation Regions

1996 ◽  
Vol 111 ◽  
pp. 2017 ◽  
Author(s):  
Schuyler D. van Dyk ◽  
Mario Hamuy ◽  
Alexei V. Filippenko
Keyword(s):  
Star Formation ◽  
Massive Star ◽  
Massive Star Formation ◽  
Star Formation Regions

scholarly journals The VLT-FLAMES Tarantula Survey

2018 ◽  
Vol 618 ◽  
pp. A73 ◽  
Author(s):  
F. R. N. Schneider ◽  
O. H. Ramírez-Agudelo ◽  
F. Tramper ◽  
J. M. Bestenlehner ◽  
N. Castro ◽  
...  
Keyword(s):  
Star Formation ◽  
Massive Star ◽  
Massive Stars ◽  
High Redshift ◽  
Large Magellanic Cloud ◽  
Giant Molecular Clouds ◽  
Stellar Content ◽  
Massive Star Formation ◽  
Hii Region ◽  
Mass Distributions

The 30 Doradus (30 Dor) nebula in the Large Magellanic Cloud (LMC) is the brightest HII region in the Local Group and a prototype starburst similar to those found in high redshift galaxies. It is thus a stepping stone to understand the complex formation processes of stars in starburst regions across the Universe. Here, we have studied the formation history of massive stars in 30 Dor using masses and ages derived for 452 mainly OB stars from the spectroscopic VLT-FLAMES Tarantula Survey (VFTS). We find that stars of all ages and masses are scattered throughout 30 Dor. This is remarkable because it implies that massive stars either moved large distances or formed independently over the whole field of view in relative isolation. We find that both channels contribute to the 30 Dor massive star population. Massive star formation rapidly accelerated about 8 Myr ago, first forming stars in the field before giving birth to the stellar populations in NGC 2060 and NGC 2070. The R136 star cluster in NGC 2070 formed last and, since then, about 1 Myr ago, star formation seems to be diminished with some continuing in the surroundings of R136. Massive stars within a projected distance of 8 pc of R136 are not coeval but show an age range of up to 6 Myr. Our mass distributions are well populated up to 200 M⊙. The inferred IMF is shallower than a Salpeter-like IMF and appears to be the same across 30 Dor. By comparing our sample of stars to stellar models in the Hertzsprung–Russell diagram, we find evidence for missing physics in the models above log L/L⊙ = 6 that is likely connected to enhanced wind mass loss for stars approaching the Eddington limit. Our work highlights the key information about the formation, evolution and final fates of massive stars encapsulated in the stellar content of 30 Dor, and sets a new benchmark for theories of massive star formation in giant molecular clouds.

scholarly journals A MERLIN study of 6 GHz excited OH & 6.7 GHz methanol masers in ON1

2007 ◽  
Vol 3 (S242) ◽  
pp. 188-189
Author(s):  
James A. Green ◽  
A. M. S. Richards ◽  
H. Flood ◽  
W. H. T. Vlemmings ◽  
R. J. Cohen
Keyword(s):  
Magnetic Field ◽  
Star Formation ◽  
Cross Correlation ◽  
Massive Star ◽  
Zeeman Splitting ◽  
Massive Star Formation ◽  
Star Formation Region ◽  
Formation Region ◽  
Methanol Masers ◽  
Field Strengths

AbstractMERLIN observations of 6.668-GHz Methanol and 6.035-GHz OH emission from the known massive star-formation region ON1 are presented. Maser components are found to lie at the southern edge of the UCHII with consistent polarization angles across the strongest features. Zeeman splitting of OH shows magnetic field strengths between +0.4 to −5.3 mG and from cross-correlation a tentative methanol magnetic field of −18mG is detected.

scholarly journals Millimetre continuum observations of southern massive star formation regions -- I. SIMBA observations of cold cores

2005 ◽  
Vol 363 (2) ◽  
pp. 405-451 ◽  
Author(s):  
T. Hill ◽  
M. G. Burton ◽  
V. Minier ◽  
M. A. Thompson ◽  
A. J. Walsh ◽  
...  
Keyword(s):  
Star Formation ◽  
Massive Star ◽  
Massive Star Formation ◽  
Star Formation Regions
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