We report new spectral types or spectral classification constraints for over 600 stars in the Orion Nebula Cluster (ONC) based on medium resolution (R ≈ 1500-2000) red optical spectra acquired using the Palomar 200'' and Kitt Peak 3.5 m telescopes. Spectral types were initially estimated for F, G, and early K stars from atomic line indices while for late K and M stars, which constitute the majority of our sample, indices involving TiO and VO bands were used. To ensure proper classification, particularly for reddened, veiled, or nebula-contaminated stars, all spectra were then visually examined for type verification or refinement. We provide an updated spectral type table that supersedes previous work, increasing the percentage of optically ...
General properties of the Orion star-forming region are discussed, with a focus on the dense Orion N...
We present a spectroscopic study of candidate brown dwarf members of the Orion Nebula cluster (ONC)....
Context. Our general understanding of multiple star and planet formation is primarily base...
We present U, B, V, I broadband, 6200 Å TiO mediumband, and Hα narrowband photometry of the Orion Ne...
We present a new analysis of the stellar population of the Orion Nebula Cluster (ONC) based on multi...
We present U, B, V, I broadband, 6200 angstrom TiO mediumband, and H alpha narrowband photometry of ...
The Hubble Space Telescope (HST) Treasury Program on the Orion Nebula Cluster (ONC) has used 104 orb...
Aims. The aim of this work is to characterize the stellar population between Earth and the Orion A m...
We present a spectroscopic survey of over 3400 potential members in the North America and Pelican Ne...
Aims. The aim of this work is to characterize the stellar population between Earth and the Orion A m...
We present a new census of the Orion Nebula Cluster over a large field of view (≳30' × 30'), signifi...
We perform a spectroscopic survey of the foreground population in Orion A with MMT/Hectospec. We use...
We perform a spectroscopic survey of the foreground population in Orion. A with MMT/Hectospec. We us...
The results of a submillimetre wavelength spectral line survey between 455.1-507.4 GHz of the Orion-...
Aims: We study the optical spectral properties of a sample of stars showing far infrared colours sim...
General properties of the Orion star-forming region are discussed, with a focus on the dense Orion N...
We present a spectroscopic study of candidate brown dwarf members of the Orion Nebula cluster (ONC)....
Context. Our general understanding of multiple star and planet formation is primarily base...
We present U, B, V, I broadband, 6200 Å TiO mediumband, and Hα narrowband photometry of the Orion Ne...
We present a new analysis of the stellar population of the Orion Nebula Cluster (ONC) based on multi...
We present U, B, V, I broadband, 6200 angstrom TiO mediumband, and H alpha narrowband photometry of ...
The Hubble Space Telescope (HST) Treasury Program on the Orion Nebula Cluster (ONC) has used 104 orb...
Aims. The aim of this work is to characterize the stellar population between Earth and the Orion A m...
We present a spectroscopic survey of over 3400 potential members in the North America and Pelican Ne...
Aims. The aim of this work is to characterize the stellar population between Earth and the Orion A m...
We present a new census of the Orion Nebula Cluster over a large field of view (≳30' × 30'), signifi...
We perform a spectroscopic survey of the foreground population in Orion A with MMT/Hectospec. We use...
We perform a spectroscopic survey of the foreground population in Orion. A with MMT/Hectospec. We us...
The results of a submillimetre wavelength spectral line survey between 455.1-507.4 GHz of the Orion-...
Aims: We study the optical spectral properties of a sample of stars showing far infrared colours sim...
General properties of the Orion star-forming region are discussed, with a focus on the dense Orion N...
We present a spectroscopic study of candidate brown dwarf members of the Orion Nebula cluster (ONC)....
Context. Our general understanding of multiple star and planet formation is primarily base...