Photometric study of two detached binaries FW Vel and BB Mon

2017 ◽  
Author(s):  
S. Özer ◽  
D. Sürgit
Keyword(s):  
Photometric Study ◽  
Detached Binaries

SPECTRAL AND PHOTOMETRIC STUDY OF TWO OBJECTS IRAS 22023+5249 AND IRAS 06053+1837

2020 ◽  
Vol 3 (331) ◽  
pp. 52-58
Author(s):  
L.N. Kondratyeva ◽  
◽  
E.K. Denissyuk ◽  
I.V. Reva ◽  
M.A. Krugov ◽  
...  
Keyword(s):  
Photometric Study

Pre–Main-Sequence Stars in the Young Galactic Cluster IC 4996: A CCD Photometric Study

1998 ◽  
Vol 116 (4) ◽  
pp. 1801-1809 ◽  
Author(s):  
Antonio J. Delgado ◽  
Emilio J. Alfaro ◽  
André Moitinho ◽  
José Franco
Keyword(s):  
Main Sequence ◽  
Photometric Study ◽  
Main Sequence Stars ◽  
Galactic Cluster

A photometric study of the star V1016 Ori

2000 ◽  
Vol 26 (7) ◽  
pp. 452-459 ◽  
Author(s):  
N. I. Bondar’ ◽  
É. A. Vitrichenko ◽  
M. M. Zakirov
Keyword(s):  
Photometric Study

Photometric study of open star clusters in II quadrant: Teutsch 1 and Riddle 4

New Astronomy ◽  
2016 ◽  
Vol 42 ◽  
pp. 66-77 ◽  
Author(s):  
D. Bisht ◽  
R.K.S. Yadav ◽  
A.K. Durgapal
Keyword(s):  
Star Clusters ◽  
Photometric Study ◽  
Open Star Clusters ◽  
Open Star

CCD PHOTOMETRIC STUDY AND PERIOD INVESTIGATION OF AH TAURI

2015 ◽  
Vol 150 (1) ◽  
pp. 25 ◽  
Author(s):  
Fu-Yuan Xiang ◽  
Ting-Yu Xiao ◽  
Yun-Xia Yu
Keyword(s):  
Photometric Study

scholarly journals By Draconis and RS Canum Venaticorum Stars: The Discoveries of Classical Photometry and Spectroscopy

1980 ◽  
Vol 5 ◽  
pp. 847-848 ◽  
Author(s):  
Bernard W. Bopp
Keyword(s):  
Spectroscopic Binaries ◽  
Physical Parameters ◽  
Late Type ◽  
Double Line ◽  
Strong Emission ◽  
Rs Cvn Stars ◽  
Ceti Type ◽  
The Common ◽  
Orbital Periods ◽  
Detached Binaries

Physically quite dissimilar, the BY Dra and RS CVn stars have the common characteristic of extraordinarily high levels of stellar surface activity.The RS CVn group, as defined by Hall, consists of detached binaries both components of types F, G, or K. The orbital periods are from a few days to a few weeks, and the mass ratios are generally near unity. Spectroscopically, the stars are remarkable in that they show very strong Ca II H and K emission outside eclipse. Masses and radii are known for many of these systems; physical parameters indicate these systems contain a moderately evolved subgiant, with mass slightly greater than 1 M⊚. The ages (which may be verified by data on visual companions) are a few 10 years.In contrast, the BY Dra variables are late-type dwarfs, with spectral types ranging from dK5e to dM4e. The e designation indicates the presence of Balmer emission, which is generally visible in moderate strength at Ha and only very weakly present in the blue. The BY Dra stars do exhibit strong emission at H and K, however, and also show UV Ceti-type flares. Approximately 75% of the BY Dra variables are known as double-line spectroscopic binaries.

A photometric study of mutual phenomena of galilean satellites

1978 ◽  
Vol 2 (1) ◽  
pp. 13-39
Author(s):  
Chen Dao-han ◽  
Wu Zhi-xian ◽  
Yang Xiu-yi ◽  
Wang Chang-bin
Keyword(s):  
Photometric Study ◽  
Galilean Satellites

Photometric Study of the Prototropic Constant of the Anion of 2-Hydroxymethylbenzimidazole1

1966 ◽  
Vol 88 (8) ◽  
pp. 1692-1698 ◽  
Author(s):  
Harold Walba ◽  
Wallace J. Murray ◽  
Gaylen Knutson ◽  
Arthur Diaz
Keyword(s):  
Photometric Study
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