Contents
Images
Upload your image
DSS Images Other Images
Related articles
The North Galactic Pole +30° Zone Galaxies. I. A Comparative Study of Galaxies with Different Nuclear Activity
A database containing 618 active and star-forming (A/SF) galaxies and564 normal galaxies in a 120deg×6deg widestrip crossing the north Galactic pole was constructed in order tocompare the global properties of ``active'' galaxies against a controlsample of ``normal'' galaxies. This database combines a literature andcatalog search with new optical measurements from the Fpg(red) and Jpg (blue) band images of the STScI Digitized SkySurvey (DSS). We provide alternative names, accurate coordinates,morphological type, activity classes, red and blue apparent magnitudes,2MASS near-infrared J-H and H-K colors, apparent diameters, axialratios, position angles, and number counts of neighboring objects in acircle of radius 50 kpc. We also present an atlas of 103 interacting andmerging systems among these galaxies. The integrated properties of A/SFand normal galaxies in this sample are compared using a multivariatefactor analysis, which reveals that A/SF galaxies are objects withrelatively late morphological types, and are more inclined and havebluer optical colors than normal galaxies. In this sample, all mergingand interacting galaxies are A/SF objects. Star-forming galaxies areobjects with relatively late morphological types, lower absoluteluminosities and linear sizes, bluer colors, and higher inclination thansample X-ray or radio sources, as well as Seyfert galaxies. Thenear-infrared colors of the sample galaxies are independent parametersand do not correlate with activity level or any other parameter of thegalaxies.
| Spectral survey of Case emission-line galaxies with the 6 M Russian telescope
The results of the follow-up spectroscopy of 178 emission-line galaxy(ELG) candidates from the Case objective-prism survey and nine Markariangalaxies with the 6 m telescope are described. Only the candidatesclassified in the Case survey as those with emission lines were observedwith the aim to form a statistical sample of blue compact galaxies(BCGs) with strong emission lines in the zone alpha = 8() h /16() h, anddelta = +29(deg) /+38(deg) . We present the redshifts, equivalent widthsand flux ratios for the strongest lines and the spectrum type for mostof the galaxies with detected emission lines. A significant fraction (~23%) of the observed Case galaxies do not show emission lines in blue.Preliminary analysis of the data is presented and the properties of theobserved ELGs are compared with those of other known samples.Tables 2 to 4 are only available in electronic form at the CDS viaanonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or viahttp://cdsweb.u-strasbg.fr/Abstract.html
| The Case Low-Dispersion Northern Sky Survey. XIII - A region in central Bootes and Corona Borealis
Positions, estimated magnitudes, and finding charts (when necessary) areprovided for 138 blue and/or emission-line galaxies, four H II regionsin two galaxies, 83 unresolved blue and/or emission-line objects,including QSO candidates, and 36 known and suspected blue stars in aabout 100 sq deg region in central Bootes and Corona Borealisencompassed primarily in the region R.A. between 14h 08m and 16h 10m andDecl. between 29 deg 30 min and 33 deg 30 min (1950). The objects, whoseblue magnitudes are mostly within the range 15-18, were identified onlow-dispersion objective-prism plates taken with the Burrell Schmidttelescope at Kitt Peak.
| A search for faint blue stars in high galactic latitudes. I. Nine PSS fields near the north galactic pole.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1977A&AS...28..123B&db_key=AST
|
Submit a new article
Related links
Submit a new link
Member of following groups:
|
Observation and Astrometry data
Catalogs and designations:
|
