Садржај
Слике
Уплоадјуј своје слике
DSS Images Other Images
Везани чланци
Vitesses radiales. Catalogue WEB: Wilson Evans Batten. Subtittle: Radial velocities: The Wilson-Evans-Batten catalogue.
We give a common version of the two catalogues of Mean Radial Velocitiesby Wilson (1963) and Evans (1978) to which we have added the catalogueof spectroscopic binary systems (Batten et al. 1989). For each star,when possible, we give: 1) an acronym to enter SIMBAD (Set ofIdentifications Measurements and Bibliography for Astronomical Data) ofthe CDS (Centre de Donnees Astronomiques de Strasbourg). 2) the numberHIC of the HIPPARCOS catalogue (Turon 1992). 3) the CCDM number(Catalogue des Composantes des etoiles Doubles et Multiples) byDommanget & Nys (1994). For the cluster stars, a precise study hasbeen done, on the identificator numbers. Numerous remarks point out theproblems we have had to deal with.
| UBV corrections for bright stars in SIMBAD
Not Available
| UBV photometry of stars whose positions are accurately known. VI
Results are presented from UBV photometric observations of 1000 stars ofthe Bright Star Catalogue and the faint extension of the FK5.Observations were carried out between July 1987 and December 1990 withthe 40-cm Cassegrain telescope of the Kvistaberg Observatory.
| Spectropolarimetry of high-polarization Seyfert 2 galaxies and unified Seyfert theories
Spectropolarimetry was used to study eight high-polarization Seyfert 2galaxies. In four of them (Mrk 3, Mrk 348, Mrk 463E, and NGC 7674),evidence was found for a hidden broad-line region (BLR), visible only inthe polarized flux spectrum. The other four objects, Mrk 78, Mrk 1066,NGC 591, and NGC 7672, may also have hidden BLRs, but at a flux levelbelow the detection threshold. The properties of the hidden BLRs areconsistent with their normal Seyfert 1 nuclei. If all Seyfert 2 galaxiesare in reality Seyfert 1 galaxies in which the nuclei are hidden fromdirect view and seen only in scattered light, then one might expect thatmany Seyfert 2 galaxies have polarizations of their featureless continuagreater than 50 percent. Such high polarization are not seen, perhapsindicating a particular geometry, in which nearly edge-on obscuring torialso block light from the scattering region. This model predicts that,in edge-on cases, little or no featureless continua in the spectra ofthe objects will be detected. Arguments are presented that objects withhigh luminosity, such as QSOs, have geometrically thin tori and henceare much less likely to have obscured continua and BLRs.
| DDO, Cousins R-I, and photomultiplier scanner data for an analysis of very strong lined K giants
New DDO photometry and photomultiplier scanner data on a number ofsuper-metal-rich K giants are presented. The data provide information onblanketing, feature strengths, and stellar temperatures. Some of thescanner data are transformed to the Cousins R-I system and given withpreviously published measurements using this system.
| UBV photometry of stars whose positions are accurately known. IV
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1987A&AS...68..211O&db_key=AST
| UBV Photoelectric Photometry of 259 PZT Stars
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1980PASP...92..215G&db_key=AST
| Abundances in late-type giants.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1972A&A....19..434G&db_key=AST
|
Додај нови чланак
Линкови у сродству са темом
Додај нови линк
Чланови следећих група \:
|
Посматрања и Астрометриски подаци
| Сазвежђа: | Херкулес |
| Ректацензија: | 16h57m31.00s |
| Deклинација: | +25°21'10.0" |
| Apparent магнитуда: | 6.28 |
| Даљина: | 170.358 parsecs |
| Proper motion RA: | 8 |
| Proper motion Dec: | 15 |
| B-T magnitude: | 7.418 |
| V-T magnitude: | 6.371 |
Каталог и designations:
|
