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The ROSAT all-sky survey catalogue of the nearby stars
We present X-ray data for all entries of the Third Catalogue of NearbyStars \cite[(Gliese & Jahreiss 1991)]{gli91} that have been detectedas X-ray sources in the ROSAT all-sky survey. The catalogue contains1252 entries yielding an average detection rate of 32.9 percent. Inaddition to count rates, source detection parameters, hardness ratios,and X-ray fluxes we also list X-ray luminosities derived from Hipparcosparallaxes. Catalogue also available at CDS via anonymous ftp tocdsarc.u-strasbg.fr (130.79.128.5) or viahttp://cdsweb.u-strasbg.fr/Abstract.html
| Studies of bipolar nebulae. VII - The exciting star of OH 0739-14 /equals OH 231.8 plus 4.2/
A spectral classification for the exciting star of the bipolarreflection nebula OH 0739-14, which has also been observed to be anOH/H2O maser source, is obtained from the spectrum of the nebulosity inthe range 6000-9000 A. Spectrophotometry of the visible nebula wasobtained with the Cassegrain image-tube scanner on the Lick Observatory3-m telescope at a resolution of approximately 7 A. The red spectrum isfound to be distinguished by TiO absorption at the bandheads at 8206,8303, 8432, 8442 and 8452 A and VO in the 7400 and 7900 A regions. Onthe basis of the depths of these bandheads and the K I 7699 A and Ca IIinfrared triplet, OH 0739-14 is determined to be of spectral type M9III. The underlying star thus represents the coolest known star to occurin a bipolar system.
| Nearby Star Data Published 1969-1978
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1979A&AS...38..423G&db_key=AST
| Dwarf K and M stars in the southern hemisphere.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1972AJ.....77..486U&db_key=AST
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Osservazione e dati astrometrici
| Costellazione: | Tucano |
| Ascensione retta: | 23h19m05.40s |
| Declinazione: | -60°31'14.4" |
| Magnitudine apparente: | 8.927 |
| Distanza: | 19.242 parsec |
| Moto proprio RA: | -95.2 |
| Moto proprio Dec: | -44.2 |
| B-T magnitude: | 10.432 |
| V-T magnitude: | 9.052 |
Cataloghi e designazioni:
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