Results 231 to 240 of about 43,263 (262)

Polarimetry of Early Emission Line Stars.

, 2001
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Early-type emission-line stars

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Emission-line Stars and Early-type Stars with Gaia

EAS Publications Series, 2010
Gaia will provide accurate parallaxes, spectrophotometry and spectroscopy for hundreds of thousands of emission-line stars across the whole HR diagram. In preparation for the Gaia mission, we are developing algorithms to recognize and classify emission-line stars. A large collection of ground-based spectroscopic observations has been collected and will
R. Blomme, Y. Frémat, A. Lobel, C. Martayan   +3 more
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A survey of emission-line stars in the CMa star formation region

Astrophysics and Space Science, 1986
A survey of emission-line stars was carried out in the CMa star formation region, based on spectral observations with the Kiso Schmidt telescope. In total, 128 emission-line stars were detected, ranging from V = 6 to 15, and the majority are found with V between 11 and 14.
Suhardja D. Wiramihardja, Tomokazu Kogure, Makoto Nakano, Shigeomi Yoshida, Ken’ichi Tatematsu   +4 more
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Emission-line Central Stars of Planetary Nebulae

AIP Conference Proceedings, 2005
The temperatures of central stars of planetary nebulae (PNe) are compared with evolutionary tracks. © 2005 American Institute of Physics.
Gesicki, K., Zijlstra, A. A.; id_orcid 0000-0002-3171-5469, Acker, A.   +2 more
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Spectroscopic Observations of Emission-line Stars

Publications of the Astronomical Society of Australia, 1991
AbstractIn this paper we present the results of spectroscopic observations for 34 emission-line stars (ELSs) in the Orion belt region, which were detected in an extensive survery. Spectral classification and the intensities of Hα and Hβ emission have revealed that the observed ELSs are probably T-Tauri type stars.
T. Kogure, K. Ogua, M. Nakano, S. Yoshida   +3 more
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The N III Emission Lines in the Of Stars

Publications of the Astronomical Society of the Pacific, 1973
Recent work has lead to an improved understanding of the physical mechanisms which produce the NIH emission lines in Of stars. The present status of the problem is briefly reviewed in this paper.
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Early-type Emission-line Stars

2007
Wolf-Rayet (WR) stars owe its name to the discoverers, C. Wolf and G. Rayet. They are one of the most conspicuous stellar objects in spectral features, activities, and in the processes of stellar evolution. They are spectroscopically characterized by the following features.
Tomokazu Kogure, Kam-Ching Leung
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Early-Type Emission-Line Stars

1982
Early-type emission-line stars keep the continuous interest of the scientists. As it is believed the emission lines are formed in the extensive envelopes surrounding these stars. The various objects of this sort could be generally grouped into the following classes: a) the Of stars; b) the Wolf-Rayet stars; c) the Be-stars; d) the Shell stars; e) the B-
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Emission-Line Stars in the Canis Major Star-Formation Region

Publications of the Astronomical Society of Japan, 1986
Abstract Using the Schmidt telescope of the Kiso Observatory, we have surveyed Hα-emission stars in the Canis Major star-formation region and its adjacent reference area. In the area of about 58 square degrees a total of 179 Hα-emission stars have been found in the magnitude range between K=6 and 15 with a majority in the V = 11–14 range.
Suhardja D. Wiramihardja, Tomokazu Kogure, Makoto Nakano, Shigeomi Yoshida   +3 more
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