HD 93129 is a triple star system in the Carina Nebula, with all three components being hot O class stars amongst the most luminous stars in the Milky Way. It is the dominant member of …

Apr 2, 2025 · HD 93129a is a spectroscopic binary star located in the constellation of Carina, The Keel. It is not part of the Carina constellation outline but is within the borders of the constellation.

The star HD 93129A is located at right ascension 10 h 43 m 57.40 s and declination -59°32'51.0" (J2000), and is usually classified as spectral type O3 If*, though the ORFEUS EUV …

Nov 19, 2018 · HD 93129A was classified as the earliest O-type star in the Galaxy (O2~If*) and is considered as the prototype of its spectral class. However, interferometry shows that this …

Nov 29, 2003 · We present the results of radio continuum observations towards the open cluster Tr 14, where our main targets are the early-type O stars HD 93129A/B and HD 93128. The …

HD 93129A is the earliest spectral type binary star known in the Milky Way and served as the prototype for the spectral class O2 If*. However, this spectral class was assigned before it was …

The O2If* star, HD 93129A, is among the earliest in the Galaxy and has one of the strongest winds of any O star. In this paper, we show that its hard and strong X-ray emission can be …

Among them one star, HD 93129A, stands out as the earliest, most luminous, and most massive star known in our Galaxy. Walborn et al. (2002) re-analyzed spectra of HD 93129A, previously …

Apr 25, 2011 · We present analysis of both the resolved X-ray emission line profiles and the broadband X-ray spectrum of the O2 If* star HD 93129A, measured with the Chandra HETGS.

We conducted an observational campaign towards one of the most massive and luminous colliding wind binaries in the Galaxy, HD 93129A, close to its periastron passage in 2018. …