Published 2008
| Version v1
Journal article
Spectral and photometric observations of Y Ori
Creators
- 1. Byurakan Astrophysical Observatory named after V. Ambartsumian, Byurakan (Armenia)
- 2. Astronomical Observatory Ramon Maria Aller, University of Santiago de Compostela, Santiago de Compostela (Spain)
Description
The results of spectral and photometric study of the long-period variable star Y Ori are reported. Being close to the brightness minimum, it is classified as a cool M7IIIe giant. In the blue part of spectrum some typical to early spectral type star features are overlapped with a characteristics of a cool giant, thus leading to a variable excess of radiation in the range of 4000-4200 A . In contrast with a usual monotonically decreasing intensity of the Balmer lines (EWHα > EWHβ > EWHγ > EWHδ) in early type normal stars, a reversal behavior (EWHγ < EWHδ) in Y Ori spectra is registered
Additional details
Additional titles
- Original title (Russian)
- Спектральниые и фотометрическиые наблюдения звезди Ы Ори
Identifiers
Publishing Information
- Journal Title
- Astrofizika
- Journal Volume
- 51
- Journal Issue
- 4
- Journal Page Range
- p. 567-576
- ISSN
- 0571-7132
- CODEN
- ASTKBG
INIS
- Country of Publication
- Armenia
- Country of Input or Organization
- Armenia
- INIS RN
- 46134083
- Subject category
- S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
- Descriptors DEI
- BALMER LINES; EMISSION; GIANT STARS; INFRARED RADIATION; PHOTOMETRY; STARS; ULTRAVIOLET RADIATION
- Descriptors DEC
- ELECTROMAGNETIC RADIATION; RADIATIONS; STARS
Optional Information
- Notes
- 32 refs., 2 figs., 1 tab.