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מאמרים קשורים
Pulkovo compilation of radial velocities for 35495 stars in a common system.
Not Available
| The general catalogue of trigonometric [stellar] paralaxes
Not Available
| Emission-line candidates from the northern HK survey
This paper presents a list of 158 candidate emission-line objectsdetected with the northern HK interference-filter/objective-prism surveyobtained with the Burrell Schmidt telescope. The objects have magnitudesin the range 11 less than or equal to B less than or equal to 15.5,several magnitudes fainter than obtained with prism surveys of similarresolution.
| Space motions of low-mass stars.
Radial-velocity measures are presented for 225 stars, most of which aredwarf K and M stars. The data were obtained with the CfA digitalspeedometer, whose uncertainty is less than 1 km/s. Calibrations ofthree earlier radial-velocity studies and comparisons with three othercontemporary ones lead to the evaluation of the standard error for anindividual star as determined in each investigation. The data from twomasks, matching solar type and M type stars, form a ratio that measuresstellar surface temperature quite closely and appear to be useful indetecting the presence of unseen companions. A few previouslyunrecognized binaries have been detected; those with most certaintyinclude stars nos. 366B, 453, and 46A of the McCormick lists of dwarfstars.
| Dwarf K and M stars of high proper motion found in a hemispheric survey
A recently completed visual/red spectral region objective-prism surveyof more than half the sky found some 2200 dwarf K and M stars ofnegligible proper motion (Stephenson, 1986). The present paper adds the1800-odd spectroscopically identified dwarfs that did prove to havesignificant proper motions. About half of these had previous spectralclassifications of some sort, especially by Vyssotsky (1952, 1956). Forthe great majority, the present coordinates are more accurate thanprevious data. The paper includes about 50 stars with unpublishedparallaxes, likely to have parallaxes of 0.05 arcsec or more. Combiningthe present data with the first paper suggests that the number oflow-proper-motion stars in that paper was not unreasonable.
| Parallaxes and proper motions. IV.,V. .
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1971AJ.....76...77K&db_key=AST
| Dwarf M stars found spectrophotometrically .
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1956AJ.....61..201V&db_key=AST
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הכנס מאמר חדש
לינקים קשורים
הכנס לינק חדש
משמש של הקבוצה הבאה
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תצפית ומידע אסטרומטרי
| קבוצת-כוכבים: | שומר הדובים |
| התרוממות ימנית: | 13h51m22.43s |
| סירוב: | +26°19'33.5" |
| גודל גלוי: | 11.186 |
| מרחק: | 47.642 פארסק |
| תנועה נכונה: | -33.3 |
| תנועה נכונה: | -108.4 |
| B-T magnitude: | 12.904 |
| V-T magnitude: | 11.328 |
קטלוגים וכינוים:
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