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Limits on stable iron in TypeIa supernovae from NIR spectroscopy
A. Flörs, J. Spyromilio, K. Maguire +3
We obtained optical and near-infrared spectra of TypeIa supernovae (SNeIa) at epochs ranging from 224 to 496 days after the explosion. The spectra show emission lines from…
Multiple Star Systems in the Orion Nebula
GRAVITY collaboration, Martina Karl, Oliver Pfuhl +133
This work presents an interferometric study of the massive-binary fraction in the Orion Trapezium Cluster with the recently comissioned GRAVITY instrument. We observe a total of 16…
Early formation of carbon monoxide in the Centaurus A supernova SN 2016adj
D. P. K. Banerjee, Vishal Joshi, A. Evans +8
We present near-infrared spectroscopy of the NGC 5128 supernova SN 2016adj in the first 2 months following discovery. We report the detection of first overtone carbon monoxide emis…
GRAVITY chromatic imaging of Eta Car's core
GRAVITY Collaboration, J. Sanchez-Bermudez, G. Weigelt +132
Eta Car is one of the most intriguing luminous blue variables in the Galaxy. Observations and models at different wavelengths suggest a central binary with a 5.54 yr period residin…
Detection of the gravitational redshift in the orbit of the star S2 near the Galactic centre massive black hole
GRAVITY Collaboration, R. Abuter, A. Amorim +95
The highly elliptical, 16-year-period orbit of the star S2 around the massive black hole candidate Sgr A* is a sensitive probe of the gravitational field in the Galactic centre. Ne…
Nebular spectroscopy of SN 2014J: Detection of stable nickel in near infrared spectra
S. Dhawan, A. Flörs, B. Leibundgut +5
We present near infrared (NIR) spectroscopy of the nearby supernova 2014J obtained 450 d after explosion. We detect the [Ni II] 1.939 m line in the spectra indicating the…