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Iron and helium emission lines in classical T Tauri stars
Emissions Molecular cloud Emissions High resolution Echelle spectrum The center of mass velocity
2014/12/9
Results are presented for the He emission in 31 CTTS from the Taurus-Auriga molecular cloud spanning two orders of magnitude in the mass accretion rate, and for the Fe emission in DR Tau, based on a s...
Nonradial superfluid modes in oscillating neutron stars
stars: neutron – stars: oscillations – stars: interiors
2011/10/12
For the first time nonradial oscillations of superfluid nonrotating stars are self-consistently studied at finite stellar temperatures. We apply a realistic equation of state and realistic density dep...
Galactic S Stars: Investigations of Color, Motion, and Spectral Features
Galactic S Stars: Investigations Motion Spectral Features
2011/10/12
Known bright S stars, recognized as such by their enhanced s-process abundances and C/O ratio, are typically members of the asymptotic giant branch (AGB) or the red giant branch (RGB). Few modern digi...
Measurement of Double Stars with a CCD Camera：Two Methods。
Analysis of Select RR Lyrae Stars in Serpens from uvby Photoelectric Photometry
RR Lyrae Stars uvby Photoelectric Photometry Serpens
2009/6/16
Analysis of Select RR Lyrae Stars in Serpens from uvby Photoelectric Photometry。
A spectral atlas of Landolt stars for a reliable mid-IR spectrophotometric calibration for large telescopes
Landolt stars telescopes mid-IR spectrophotometric calibration
2009/6/12
A spectral atlas of Landolt stars for a reliable mid-IR spectrophotometric calibration for large telescopes。
CCD OBSERVATIONS OF VISUAL DOUBLE AND MULTIPLE STARS AT THE BELGRADE OBSERVATORY
MULTIPLE STARS CCD measurements Belgrade Large Refractor ST-6 camera
2009/3/19
The author presents her CCD measurements of 105 double and
multiple stars performed with a ST-6 camera on the Belgrade Large Refractor (Zeiss
65/1055 cm).
A set of 71 measurements of double and multiple stars, carried
out with the Large Zeiss Refractor 65/1055 cm of the Belgrade Observatory, is
communicated. The bulk of these measurements, 41 in all, ...
In this paper are presented recalculated elliptical and Thiel-Innes
orbitatal elements for the followingdouble stars:WDS05255-0033,WDS12272+2701,
WDS 13336+2944 and WDS 21031+0132 (two versions). Th...
In this paper are presented recalculated elliptical and Thiel-Innes
orbitatal elements for the followingdouble stars:WDS05255-0033,WDS12272+2701,
WDS 13336+2944 and WDS 21031+0132 (two versions). Th...
PHOTOGRAPHIC ZENITH TUBE OBSERVATIONS TO IMPROVE HIPPARCOS PROPER MOTION IN DECLINATION OF SOME STARS
Astrometry-Reference systems
2009/3/3
in declination for some HIPPARCOS stars are presented. A long
series of optical observations of these stars observed with Photographic Zenith Tubes
(PZT) are used. The HIPPARCOS ESA mission (ESA 199...
Using the 2-m telescope of the Bulgarian National Astronomical
Observatory at Rozhen observations of twenty multiple stars were carried out during
one whole night - October 30/31, and, also, during ...