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Pulkovo compilation of radial velocities for 35495 stars in a common system.
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| UvbyHbeta_ photometry of main sequence A type stars.
We present Stroemgren uvby and Hbeta_ photometry for a set of575 northern main sequence A type stars, most of them belonging to theHipparcos Input Catalogue, with V from 5mag to 10mag and with knownradial velocities. These observations enlarge the catalogue we began tocompile some years ago to more than 1500 stars. Our catalogue includeskinematic and astrophysical data for each star. Our future goal is toperform an accurate analysis of the kinematical behaviour of these starsin the solar neighbourhood.
| The local distribution of NA I interstellar gas
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| A very dense H I filament within the Local Hot Bubble
We present H I observations and a distance determination frominterstellar Na I D absorption lines of the dense filament LVC 88+36-2.The H I observations reveal strong 21-cm emission lines of very lowvelocity dispersion. All of our Na I D spectra toward suitable starshave strong absorption lines coincident with the H I emission, settingan upper distance limit of (60 +/- 20) pc. Since the Local Hot Bubblehas a radius of about 100 pc in this direction, we conclude that LVC88+36-2 is located within the bubble. A shadow of the filament, found inthe diffuse soft X-ray background, can be used to analyze the locationof the soft X-ray emission.
| MK classification and photometry of stars used for time and latitude observations at Mizusawa and Washington
MK spectral classifications are given for 591 stars which are used fortime and latitude observations at Mizusawa and Washington. Theclassifications in the MK system were made by slit spectrograms ofdispersion 73 A/mm at H-gamma which were taken with the 91 cm reflectorat the Okayama Astrophysical Observatory. Photometric observations in UBV were made with the 1-meter reflector at the Flagstaff Station of U.S.Naval Observatory. The spectrum of HD 139216 was found to show a strongabsorption line of H-beta. The following new Am stars were found:HD9550, 25271, 32784, 57245, 71494, and 219109. The following new Apstars were found: HD6116, 143806, 166894, 185171, and 209260. The threestars, HD80492, 116204, and 211376, were found to show the emission inCaII H and K lines.
| A search for interstellar NA I D absorption lines towards the Draco nebula.
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| Radial velocity measurements. I - Ground-based observations of the program stars for the HIPPARCOS satellite
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| Photoelectric UBV photometry for 317 PZT and VZT stars
UBV data were taken of 317 stars to fill gaps in photoelectric recordsneeded for establishing a terrestrial reference frame for earthorientation purposes. The study supplied the magnitudes and colors andaided in identifying nearby stars without trigonometric parallaxes. Thesurvey averaged over three observations of each object. A complete tableof the V, B-V, U-B and number of observations of each object isprovided.
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Observation and Astrometry data
| Constellation: | Δράκων |
| Right ascension: | 16h59m50.08s |
| Declination: | +58°27'45.3" |
| Apparent magnitude: | 6.86 |
| Distance: | 140.056 parsecs |
| Proper motion RA: | -10.6 |
| Proper motion Dec: | 11.9 |
| B-T magnitude: | 7.012 |
| V-T magnitude: | 6.873 |
Catalogs and designations:
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