Results 71 to 80 of about 8,488 (185)

Massive Stars in the Tarantula Nebula: A Rosetta Stone for Extragalactic Supergiant HII Regions

Galaxies, 2019
A review of the properties of the Tarantula Nebula (30 Doradus) in the Large Magellanic Cloud is presented, primarily from the perspective of its massive star content.
Paul A. Crowther
doaj   +1 more source

Properties of massive stars in four clusters of the VVV survey

, 2015
The evolution of massive stars is only partly understood. Observational constraints can be obtained from the study of massive stars located in young massive clusters.
Borissova, J., Bouret, J. -C., Chené, A. -N., Hervé, A., Martins, F.   +4 more
core   +4 more sources

Lynds 1622: a nearby star forming cloud projected on Orion B?

, 2008
We present results of optical spectroscopic and photometric observation of the pre-main sequence stars associated with the cometary shaped dark cloud Lynds 1622, and 12CO and 13CO observations of the cloud.
A. Gáspár, A. Kawamura, Adams, Bally, Barrado, Blaauw, Brown, Casassus, Cieza, Cohen, Cohen, Comerón, Correia, de Geus, Elmegreen, Elmegreen, Engelbracht, Fabricant, Furlan, Gaustad, Glass, Gordon, Gutermuth, Hartigan, Herbig, Herbig, Jaschek, Jayawardhana, Kenyon, Kirkpatrick, Knude, Kun, Kutner, Lada, Landolt, Le Borgne, Lee, Lee, Luhman, M. Kun, Maddalena, Martín, Mekkaden, Meyer, Mizuno, Mizuno, N. Mizuno, Nielbock, Ogawa, Ogura, Palla, Preibisch, Racine, Reach, Reipurth, Reipurth, Reipurth, Robitaille, Rodríguez, S. J. Kenyon, Wainscoat, Weaver, White, Wilson, Y. Fukui, Z. Balog   +65 more
core   +1 more source

Mathematics and explanation in astronomy and astrophysics [PDF]

, 2007
The purpose of this paper is to expound and clarify the mathematics and explanations commonly employed in certain notable areas of astronomy and astrophysics.
McCabe, Gordon
core   +2 more sources

Local kinematics of K and M giants from Coravel/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters

, 2004
The availability of the Hipparcos Catalogue triggered many kinematic and dynamical studies of the solar neighbourhood. Nevertheless, those studies generally lacked the third component of the space velocities, i.e., the radial velocities.
Alvarez, Arenou, Baranne, Baranne, Benz, Bienaymé, Boesgaard, Boutloukos, Brosche, Chereul, Chereul, De Simone, de Zeeuw, Dehnen, Dehnen, Dehnen, Dehnen, Eggen, Eggen, Eggen, Eggen, Famaey, Famaey, Feast, Fux, Fux, Girardi, Helmi, Hernandez, Høg, Ibata, Jorissen, Jorissen, Julian, Kaplan, Kovalevsky, Lejeune, Lindblad, Luri, Mayor, Mayor, McWilliam, Montes, Mühlbauer, Navarro, Nordström, Oort, Parker, Platais, Quillen, Raboud, Rocha-Pinto, Schwarzschild, Sellwood, Skuljan, Soubiran, Van Eck, Weidemann, Woolley, Zhu   +59 more
core   +2 more sources

An Enhanced Hertzsprung–Russell Diagram Using Gaia EDR3 Data

, 2021
Wei‐Chun Jao, Gregory A. Feiden
openalex   +1 more source

Stellar X-Ray Activity Across the Hertzsprung–Russell Diagram. I. Catalogs [PDF]

, 2020
Song Wang, Yu Bai, Lin He, Jifeng Liu
openalex   +1 more source

The HIPPARCOS Hertzsprung-Russell diagram of S stars: Probing\n nucleosynthesis and dredge-up [PDF]

, 1997
S. Van Eck, A. Jorissen, S. Udry, M. Mayor, B. Pernier   +4 more
openalex   +2 more sources

A Comprehensive Study of Czernik 41 and NGC 1342 Using CCD UBV and Gaia DR3 Data

The Astronomical Journal
In this study, the structural, astrophysical, kinematic, and Galactic orbital parameters of the open clusters Czernik 41 and NGC 1342, as well as their dynamical evolution, are investigated using CCD UBV photometry and Gaia data.
Burçin Tanık Öztürk, Selçuk Bilir, Talar Yontan, Olcay Plevne, Tansel Ak, Serap Ak, Remziye Canbay, Timothy Banks   +7 more
doaj   +1 more source

Hα Emission among Evolved FGKM Stars: A Compendium from the Literature

The Astronomical Journal
Emission in the wings of the H α line among late-type giant stars occurs as a consequence of conditions in their chromospheres. Data from the literature have been used to document the incidence of H α emission among Population I giant stars as a function
Graeme H. Smith
doaj   +1 more source