448 citations · 2.7k across the 55 of their papers we have counts for
55 papers
Cepheid metallicities from low-resolution near-infrared spectra: validation against the optical reference scale
M. A. Urbaneja, R. P. Kudritzki, N. Przybilla
Classical Cepheid metallicities trace recent chemical enrichment and help assess systematics in Cepheid-based distance measurements. They are derived mainly from high-resolution op…
Runaway BN supergiant star HD 93840: Progenitor of an imminent core-collapse supernova above the Galactic plane
D. Weßmayer, M. A. Urbaneja, K. Butler +1
We present a quantitative spectral analysis of the extreme nitrogen-enhanced supergiant HD 93840 (BN1 Ib) at an intermediate galactic latitude. Based on an optical high-resolution…
The metallicity and distance of Leo A from blue supergiants
Miguel A. Urbaneja, Fabio Bresolin, Rolf-Peter Kudritzki
We have obtained high-quality spectra of blue supergiant candidates in the dwarf irregular galaxy Leo A with the Low Resolution Imaging Spectrometer at the Keck I telescope. From t…
The IACOB project IX. Building a modern empirical database of Galactic O9-B9 supergiants: sample selection, description, and completeness
Abel de Burgos, Sergio Simón-Díaz, Miguel A. Urbaneja +1
Blue supergiants (BSGs) are important objects to study the intermediate phases of massive star evolution, helping to constrain evolutionary models. However, the lack of a holistic…
MUSE 3D spectroscopy of BA-type supergiants in NGC 300
Gemma González-Torà, Miguel A. Urbaneja, Norbert Przybilla +4
We present the results obtained using spectroscopic data taken with the intermediateresolution Multi Unit Spectroscopic Explorer (MUSE) of B and A-type supergiants and bright giant…
The metallicity and distance of NGC 2403 from blue supergiants
Fabio Bresolin, Rolf-Peter Kudritzki, Miguel A. Urbaneja
We present the first quantitative spectral analysis of blue supergiant stars in the nearby galaxy NGC 2403. Out of a sample of 47 targets observed with the LRIS spectrograph at the…