תוכן
תמונות
הוסף תמונה שלך
DSS Images Other Images
מאמרים קשורים
A list of peculiar velocities of RFGC galaxies
A list of radial velocities, HI line widths and peculiar velocities of1327 galaxies from the RFGC catalogue has been compiled using actualobservations and literature data. The list can be used for studying bulkmotions of galaxies, construction of the field of peculiar velocitiesand other tasks.
| The Revised Flat Galaxy Catalogue.
We present a new improved and completed version of the Flat GalaxyCatalogue (FGC) named the Revised Flat Galaxy Catalogue (RFGC)containing 4236 thin edge-on spiral galaxies and covering the whole sky.The Catalogue is intended to study large-scale cosmic streamings as wellas other problems of observational cosmology. The dipole moment ofdistribution of the RFGC galaxies (l = 273 degr; b =+19 degr) lieswithin statistical errors (+/-10 degr) in the direction of the LocalGroup motion towards the Microwave Background Radiation (MBR).
| Arcsecond Positions of UGC Galaxies
We present accurate B1950 and J2000 positions for all confirmed galaxiesin the Uppsala General Catalog (UGC). The positions were measuredvisually from Digitized Sky Survey images with rms uncertaintiesσ<=[(1.2")2+(θ/100)2]1/2,where θ is the major-axis diameter. We compared each galaxymeasured with the original UGC description to ensure high reliability.The full position list is available in the electronic version only.
| Spectroscopy of Edge-On Spirals
We present HI line observations of \Ntot edge-on spiral galaxies,extracted from the Flat Galaxy Catalog of Karachentsev \etal (1993).Fluxes, systemic velocities and line widths are given for \Ndet detectedgalaxies, as well as search parameters for \Nnod undetected systems.Widths are corrected for instrumental broadening, smoothing,signal-to-noise and profile shape, and an estimate of the error on thewidth is given. When corrected for turbulent broadening and inclinationangle of the disks, the velocity widths presented here can provide theappropriate line width parameter needed to derive distances via theTully-Fisher relation.
| Flat galaxy catalogue
A systematic search for disklike edge-on-galaxies with a diameter largerthan a = 40 arcsec and a major-to-minor axis ratio a/b greater than 7was carried out by means of the Palomar Observatory Sky Survey and theESO/SERC survey. As a result, we present a new catalog of flat galaxies(FGC) containing 4455 objects and covering about 56 percent of the wholesky for the first time. The catalogue is assigned to study large-scalecosmic streamings and other problems of observational cosmology.
| The Seyfert 2 galaxy IC 184 and its surrounding group
The Seyfert galaxy IC 184 and the group around it are described. IDSspectra of IC 184 obtained at the ESO on November 10, 1985 and CCDspectra of IC 184 obtained at Calar Alto on January 17 and February 7,1987 are analyzed. Seven galaxies are observed in the field around IC184 and four galaxies form a physically connected group. IC 184 is abright Seyfert galaxy of type 2 with a visual magnitude of 13.81, anabsolute magnitude of -20.5, a dereddened absolute H-alpha luminosity,L(H-alpha), of 2 x 10 to the 20th erg/sec, and an extinction, E(B-V), ofabout 0.38 mag. It is detected that MCG-01-06-19 and MCG-01-06-20 haveprominent absorption lines and weak emission of H-alpha with L(H-alpha)= 9 x 10 to the 38th and 2.4 x 10 to the 39th, respectively;MCG-01-06-22 is an IRAS galaxy with flux values of 0.79 Jy and 1.79 Jy,E(B-V) = 0.93, and L(H-alpha) = 1.1 x 10 to the 41st erg/sec.
|
הכנס מאמר חדש
לינקים קשורים
הכנס לינק חדש
משמש של הקבוצה הבאה
|
תצפית ומידע אסטרומטרי
קטלוגים וכינוים:
|
