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Stars with ISM Polarization Observed with HPOL. II
Polarization data are given for stars whose polarizations are mostlyinterstellar which were observed with the University of Wisconsinspectropolarimeter (HPOL) during 1995-2003. Several cases are found forwhich K in the Serkowski Law for ISM polarization is higher than allowedby published formulas.
| Photometric variability of the Herbig Ae/Be star HD 200775
We present results of photometric monitoring of HD 200775 in thepassbands X and V of the VILGEN system obtained over the period fromSeptember 1994 to May 1995. It is shown that the star varies with aperiod of 10.225+/- 0.041 days and an amplitude of 0.02 mag in Xpassband. The variations on the time scale of several hours and/or daysare also confirmed.
| Visual polarization measurements in the Cepheus flare
We present polarization measurements on a stellar sample located in alarge area in Cepheus. The observations were made with the 2-m telescopeat the Pic du Midi (France), around 4350 A and with an accuracy of thepolarization degree of the order of 0.0001. At large scales, we findthat the galactic magnetic field as given by the direction of thepolarization (alignment of the dust) is, roughly speaking, parallel tothe galactic plane in the Cassiopeia cloud, with a scale size of theorder of 100 pc, while it is turned by about 90 in the Cepheus cloud. Atsmall scales, in both the Cepheus and the Cassiopeia clouds, the COcontent has little correlation with the degree of polarization.
| On the distance of dark clouds in the vicinity of the reflection nebula NGC 7023 in Cepheus
Distance to a group of dark clouds at moderate galactic latitudes Lynds1147, 1148, 1152, 1155, 1157, 1158, 1167, 1168, 1170, 1171, 1172, 1173,and 1174 is estimated from the extinction AV vs distance plot. Thisdependence is based on photometry of 79 stars down to V = 12.5 in theVilnius photometric system and their two-dimensional classification. Thedistance of the L1147/1158 group of clouds is found to be 325 +/- 13 pcand that of the L1167/1174 or NGC 7023 group of clouds is 288 +/- 25 pc.A number of stars with peculiar energy distribution has been found.
| Detection of H-Beta from Three HVC
Not Available
| Multicolor Photometry of Ae/be Herbig Stars
Not Available
| Optical monitoring of Orion population stars. I - Results for some T Tauri and Herbig Ae/Be stars
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1982AJ.....87.1710H&db_key=AST
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Besorolás csoportokba:
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Pozíciós és asztrometriai adatok
| Csillagkép: | Cefeusz |
| Rektaszcenzió: | 20h57m49.95s |
| Deklináció: | +67°45'48.5" |
| Vizuális fényesség: | 7.738 |
| Távolság: | 348.432 parszek |
| RA sajátmozgás: | -5.5 |
| Dec sajátmozgás: | -4.1 |
| B-T magnitude: | 9.449 |
| V-T magnitude: | 7.88 |
Katalógusok és elnevezések:
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