* Astronomy

Members Login
Post Info TOPIC: NGC 5353


L

Posts: 131433
Date:
Hercules-Bootes galaxies
Permalink  
 


Title: Nearby groups of galaxies in the Hercules-Bootes constellations
Author: Igor D. Karachentsev, Olga G. Kashibadze, Valentina E. Karachentseva

We consider a sample of 412 galaxies with radial velocities VLG<2500km s^-1 situated in the sky region of RA=13h.0 ... 19h.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 x 10^10 solar masses 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 x 10^9 solar masses 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.

Read more (5856kb, PDF)



__________________


L

Posts: 131433
Date:
NGC 5353
Permalink  
 


NGC 5353 (also HCG 68A, UGC 8813, MCG +07-29-010, and PGC  49356) is a magnitude +11.1 lenticular galaxy located 110 million light-years away in the constellation Canes Venatici.
The galaxy forms an interacting pair with its close companion NGC 5354.

The NGC 5353 galaxy group, also known as Hickson Compact Group 68 (HCG 68) include, among others, the galaxies NGC 5311, NGC 5313, NGC 5350, NGC 5355 and NGC 5358.  
The group is located about 8 degrees south east of M51 (the Whirlpool galaxy). 

The galaxy was discovered by German-British astronomer William Herschel using a 47.5 cm (18.7 inch) f/13 speculum reflector at Windsor Road, Slough, on the 14th January 1788.

Right Ascension 13h  53m  26.7s, Declination +40° 16' 59"



__________________
Page 1 of 1  sorted by
 
Quick Reply

Please log in to post quick replies.



Create your own FREE Forum
Report Abuse
Powered by ActiveBoard