Contenuti
Immagini
Carica la tua immagine
DSS Images Other Images
Articoli relazionati
The Imperial IRAS-FSC Redshift Catalogue
We present a new catalogue, the Imperial IRAS-FSC Redshift Catalogue(IIFSCz), of 60303 galaxies selected at 60?m from the IRAS FaintSource Catalogue (FSC). The IIFSCz consists of accurate position,optical, near-infrared and/or radio identifications, spectroscopicredshift (if available) or photometric redshift (if possible), predictedfar-infrared (FIR) and submillimetre (submm) fluxes ranging from 12 to1380?m based upon the best-fitting infrared template. About 55 percent of the galaxies in the IIFSCz have spectroscopic redshifts, and afurther 20 per cent have photometric redshifts obtained through eitherthe training set or the template-fitting method. For S(60) > 0.36 Jy,the 90 per cent completeness limit of the FSC, 90 per cent of thesources have either spectroscopic or photometric redshifts. Scientificapplications of the IIFSCz include validation of current and forthcominginfrared and submm/mm surveys such as AKARI, Planck and Herschel,follow-up studies of rare source populations, large-scale structure andgalaxy bias, local multiwavelength luminosity functions and sourcecounts. The catalogue is publicly available athttp://astro.imperial.ac.uk/~mrr/fss/.
| The Catalog of Southern Ringed Galaxies
The Catalog of Southern Ringed Galaxies (CSRG) is a comprehensivecompilation of diameters, axis ratios, relative bar position angles, andmorphologies of inner and outer rings, pseudorings, and lenses in 3692galaxies south of declination -17 deg. The purpose of the catalog is toevaluate the idea that these ring phenomena are related to orbitalresonances with a bar or oval in galaxy potentials. The catalog is basedon visual inspection of most of the 606 fields of the Science ResearchCouncil (SRC) IIIa-J southern sky survey, with the ESO-B, ESO-R, andPalomar Sky surveys used as auxiliaries when needed for overexposed coreregions. The catalog is most complete for SRC fields 1-303 (mostly southof declination -42 deg). In addition to ringed galaxies, a list of 859mostly nonringed galaxies intended for comparison with other catalogs isprovided. Other findings from the CSRG that are not based on statisticsare the identification of intrinsic bar/ring misalignment; bars whichunderfill inner rings; dimpling of R'1pseudorings; pointy, rectangular, or hexagonal inner or outer ringshapes; a peculiar polar-ring-related system; and other extreme examplesof spiral structure and ring morphology.
|
Sottometti un nuovo articolo
Link relazionati
Sottometti un nuovo link
Membro dei seguenti gruppi:
|
Osservazione e dati astrometrici
Cataloghi e designazioni:
|
