383 citations · 1.2k across the 12 of their papers we have counts for
6 papers · 1 filter
The Initial Mass Function of the Massive Star-forming Region NGC 3603 from Near-Infrared Adaptive Optics observations
Y. Harayama, F. Eisenhauer, F. Martins
We study the initial mass function (IMF) of one of the most massive Galactic star-forming regions NGC 3603 to answer a fundamental question in current astrophysics: is the IMF univ…
Evidence for a Long-Standing Top-Heavy IMF in the Central Parsec of the Galaxy
H. Maness, F. Martins, S. Trippe +10
We classify 329 late-type giants within 1 parsec of Sgr A*, using the adaptive optics integral field spectrometer SINFONI on the VLT. These observations represent the deepest spect…
GCIRS16SW: a massive eclipsing binary in the Galactic Center
F. Martins, S. Trippe, T. Paumard +7
We report on the spectroscopic monitoring of GCIRS16SW, an Ofpe/WN9 star and LBV candidate in the central parsec of the Galaxy. SINFONI observations show strong daily spectroscopic…
On the sensitivity of HeI singlet lines to the FeIV model atom in O stars
F. Najarro, D. J. Hillier, J. Puls +2
Recent calculations and analyses of O star spectra have revealed discrepancies between theory and observations, and between different theoretical calculations, for the strength of…
Variations in the spectral slope of Sgr A* during a NIR flare
S. Gillessen, F. Eisenhauer, E. Quataert +10
We have observed a bright flare of Sgr A* in the near infrared with the adaptive optics assisted integral field spectrometer SINFON. Within the uncertainties, the observed spectrum…
On the effective temperature scale of O stars
F. Martins, D. Schaerer, D. J. Hillier
We rediscuss the temperature of O dwarfs based on new non-LTE line blanketed atmosphere models including stellar winds computed with the CMFGEN code of Hillier & Miller (1998). Com…