Maravelias et al. 2022: A machine-learning photometric classifier for massive stars in nearby galaxies I. The method

A machine-learning photometric classifier for massive stars in nearby galaxies I. The method Grigoris Maravelias, Alceste Z. Bonanos, Frank Tramper, Stephan de Wit, Ming Yang, Paolo Bonfini Context. Mass loss is a key parameter in the evolution of massive stars. Despite the recent progress in the theoretical understanding of how …

Maravelias & Kraus 2022: Bouncing against the Yellow Void — exploring the outbursts of ρ Cas from visual observations

Bouncing against the Yellow Void — exploring the outbursts of ρ Cas from visual observations Grigoris Maravelias and Michaela Kraus Massive stars are rare but of paramount importance for their immediate environment and their host galaxies. They lose mass from their birth through strong stellar winds up to their spectacular …

Kyritsis et al. 2021: A new automated tool for the spectral classification of OB stars

A new automated tool for the spectral classification of OB stars E. Kyritsis, G. Maravelias, A. Zezas, P. Bonfini, K. Kovlakas, P. Reig (abridged) We develop a tool for the automated spectral classification of OB stars according to their sub-types. We use the regular Random Forest (RF) algorithm, the Probabilistic …

Yang et al. 2021b: Evolved Massive Stars at Low-metallicity IV. Using 1.6μm “H-bump” to identify red supergiant stars: a case study of NGC 6822

Evolved Massive Stars at Low-metallicity IV.Using 1.6μm “H-bump” to identify red supergiant stars:a case study of NGC 6822 Ming Yang, Alceste Z. Bonanos, Biwei Jiang, Man I Lam, Jian Gao, Panagiotis Gavras, Grigoris Maravelias, Shu Wang, Xiao-Dian Chen, Frank Tramper, Yi Ren, Zoi T. Spetsieri Abstract We present a case …

Yang et al. 2021: Evolved Massive Stars at Low-metallicity III. A Source Catalog for the Large Magellanic Cloud

Evolved Massive Stars at Low-metallicity III. A Source Catalog for the Large Magellanic Cloud Ming Yang, Alceste Z. Bonanos, Biwei Jiang, Jian Gao, Panagiotis Gavras, Grigoris Maravelias, Shu Wang, Xiao-Dian Chen, Man I Lam, Yi Ren, Frank Tramper, Zoi T. Spetsieri Abstract We present a clean, magnitude-limited (IRAC1 or WISE1≤15.0 …

Yang et al. 2020: Evolved Massive Stars at Low-metallicity II. Red Supergiant Stars in the Small Magellanic Cloud

Evolved Massive Stars at Low-metallicity II. Red Supergiant Stars in the Small Magellanic Cloud Ming Yang, Alceste Z. Bonanos, Bi-Wei Jiang, Jian Gao, Panagiotis Gavras, Grigoris Maravelias, Shu Wang, Xiao-Dian Chen, Frank Tramper, Yi Ren, Zoi T. Spetsieri, Meng-Yao Xue Abstract We present the most comprehensive RSG sample for the …

Yang et al. 2019: Evolved massive stars at low-metallicity. I. A source catalog for the Small Magellanic Cloud

Evolved massive stars at low-metallicity. I. A source catalog for the Small Magellanic Cloud Yang, Ming; Bonanos, Alceste Z.; Jiang, Bi-Wei; Gao, Jian; Gavras, Panagiotis; Maravelias, Grigoris; Ren, Yi; Wang, Shu; Xue, Meng-Yao; Tramper, Frank; Spetsieri, Zoi T.; Pouliasis, Ektoras Abstract We present a clean, magnitude-limited (IRAC1 or WISE1 ≤ …

Yang et al. 2018: Red supergiant stars in the Large Magellanic Cloud. II. Infrared properties and mid-infrared variability

Red supergiant stars in the Large Magellanic Cloud. II. Infrared properties and mid-infrared variability Yang, Ming; Bonanos, Alceste Z.; Jiang, Bi-Wei; Gao, Jian; Xue, Meng-Yao; Wang, Shu; Lam, Man I.; Spetsieri, Zoi T.; Ren, Yi; Gavras, Panagiotis Abstract The characteristics of infrared properties and mid-infrared (MIR) variability of red supergiant …