Садржај
Слике
Уплоадјуј своје слике
DSS Images Other Images
Везани чланци
A catalogue of [Fe/H] determinations: 1996 edition
A fifth Edition of the Catalogue of [Fe/H] determinations is presentedherewith. It contains 5946 determinations for 3247 stars, including 751stars in 84 associations, clusters or galaxies. The literature iscomplete up to December 1995. The 700 bibliographical referencescorrespond to [Fe/H] determinations obtained from high resolutionspectroscopic observations and detailed analyses, most of them carriedout with the help of model-atmospheres. The Catalogue is made up ofthree formatted files: File 1: field stars, File 2: stars in galacticassociations and clusters, and stars in SMC, LMC, M33, File 3: numberedlist of bibliographical references The three files are only available inelectronic form at the Centre de Donnees Stellaires in Strasbourg, viaanonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5), or viahttp://cdsweb.u-strasbg.fr/Abstract.html
| Photometric survey near the main Galactic meridian: 2.1. Finding charts and photoelectric U,B,V,R stellar magnitudes in 25 fields
Finding charts and photoelectric U,B,V,R magnitudes of stars in 25fields in the Main Galactic Meridian (programme MEGA) are presented.This part of the photometric survey includes fields near the NorthGalactic pole and fields at southern Galactic latitudes. Together withthe finding charts of 2.5(deg) x2.5(deg) the equatorial coordinates ofthe stars are given for epoch and equinox 1950.
| Photometric Survey Near the Main Galactic Meridian - Part One - Photoelectric Stellar Magnitudes and Colours in the UBVR System
Not Available
| Narrow-band photometry of G and K stars near the North Galactic Pole
Photoelectric narrow-band photometry obtained for 292 late-type starsbrighter than 10 m in the North Galactic Pole area is discussed. The g,n, k, m, f-system of Dickow et al. (1970) is used. The stars were chosenfrom two lists: (1) all stars of spectral type G5 or later in the HenryDraper Catalog (Cannon and Pickering, 1918-1924) within 15 deg of theNorth Galactic Pole, together with a few BD stars; and (2) all starsclassified as K or M giants and in Upgren's 25-31 deg zones (Upgren,1962). For most of the stars, estimates of the following quantities arederived: V-magnitude, R-I color, metal abundance, MV, and theduplicity parameter res(k).
| Intermediate band filter spectrophotometry of bright galaxies. I - Observations
Photoelectric photometry of galaxies in a 10-filter intermediate bandsystem between 3400 and 5500 A is presented. Included in the observingprogram are 56 galaxies of all the main Hubble types. The observationsare compared with detailed medium resolution spectral scans and withbroad band photometry. A spectral index is defined by the difference inreceived flux between the extreme bands to be used as a typediscriminant. Analyses of the data will be reported in subsequentpapers.
| On the corona of M87
East-west drift scans of M87 performed by pulse-counting techniques witha 91-cm reflector are analyzed. Derivation of a mean luminosity profilein accord with the inverse-fourth-power law yields evidence of a faintcoronal component in excess of the extrapolated luminosity distribution.The data are shown to be consistent with the suggestion that the excessluminosity in the outer coronae of elliptical galaxies is caused bytidal interaction with neighbors.
| Optical Polarization in the Nucleus of M87
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1973ApJ...179L..97K&db_key=AST
|
Додај нови чланак
Линкови у сродству са темом
Додај нови линк
Чланови следећих група \:
|
Посматрања и Астрометриски подаци
| Сазвежђа: | Девица |
| Ректацензија: | 12h30m48.94s |
| Deклинација: | +12°29'12.2" |
| Apparent магнитуда: | 8.651 |
| Даљина: | 214.133 parsecs |
| Proper motion RA: | -25.6 |
| Proper motion Dec: | -8.1 |
| B-T magnitude: | 9.798 |
| V-T magnitude: | 8.746 |
Каталог и designations:
|
