SIMBAD references

2017AstBu..72..111K - Astrophys. Bull., 72, 111-121 (2017)

Nearby groups of galaxies in the Hercules-Bootes constellations.

KARACHENTSEV I.D., KASHIBADZE O.G. and KARACHENTSEVA V.E.

Abstract (from CDS):

We consider a sample of 412 galaxies with radial velocities V_LG < 2500 km s^{-1} situated in the sky region of RA=13^h. 0 ... 19^h. 0, Dec=+10^○ ... +40^○ between the Local Void and the Supergalactic plane. One hundred and eighty-one of them have individual distance estimates. Peculiar velocities of the galaxies as a function of Supergalactic latitude SGB show signs of Virgocentric infall at SGB < 10^○ and motion from the Local Void at SGB > 60^○. A half of the Hercules-Bootes galaxies belong to 17 groups and 29 pairs, with the richest group around NGC5353. A typical group is characterized by the velocity dispersion of 67 km s^{-1}, the harmonic radius of 182 kpc, the stellar mass of 4.3 ×10^{10} M_☉ and the virial-to-stellar mass ratio of 32. The binary galaxies have the mean radial velocity difference of 37 km s^{-1}, the projected separation of 96 kpc, the mean integral stellar mass of 2.6×10^9 M_☉ and the mean virial-to-stellar mass ratio of about 8. The total dark-matter-to-stellar mass ratio in the considered sky region amounts to 37 being almost the same as that in the Local Volume.

Abstract Copyright: ∼

Journal keyword(s): galaxies: kinematics and dynamics - galaxies: distances and redshifts - galaxies: groups

VizieR on-line data: <Available at CDS (J/other/AstBu/72.111): herboo.dat>

Status at CDS : Objects in title, abstract, text, figures, and all or part of small table(s) being processed in SIMBAD.

Simbad objects: 404

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