2006MNRAS.370..681N

Query : 2006MNRAS.370..681N

2006MNRAS.370..681N - Mon. Not. R. Astron. Soc., 370, 681-690 (2006/August-1)

Dissipationless collapse, weak homology and central cores of elliptical galaxies.

NIPOTI C., LONDRILLO P. and CIOTTI L.

Abstract (from CDS):

By means of high-resolution N-body simulations, we revisited the dissipationless collapse scenario for galaxy formation. We considered both single-component collapses and collapses of a cold stellar distribution in a live dark matter halo. Single-component collapses lead to stellar systems whose projected profiles are fitted very well by the Sersic R^1/m^ law with 3.6 ≲ m ≲ 8. The stellar end-products of collapses in a dark matter halo are still well described by the R^1/m^ law, but with 1.9 ≲ m ≲ 12, where the lowest m values are obtained when the halo is dominant. In all the explored cases, the profiles at small radii deviate from their global best-fitting R^1/m^ model, being significantly flatter. The break-radius values are comparable with those measured in `core' elliptical galaxies, and are directly related to the coldness of the initial conditions. The dissipationless collapse of initially cold stellar distributions in pre-existing dark matter haloes may thus have a role in determining the observed weak homology of elliptical galaxies.

Journal keyword(s): galaxies: elliptical and lenticular, cD - galaxies: formation - galaxies: fundamental parameters - galaxies: kinematics and dynamics

Simbad objects: 1

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Number of rows : 1

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2026	#notes
1	NGC 3348	GiG	10 47 10.0367649672	+72 50 22.685834940		12.0				~	127	0

Query : 2006MNRAS.370..681N

Basic data :

NGC 3348 -- Galaxy towards a Group of Galaxies

G (2015ApJS,LEDA,...), GiG (2007ApJ,[CHM2007]), rG (2019ApJ), AG? (2020MNRAS), * (Gaia)

10 47 10.0367649672 +72 50 22.685834940 (Optical) [ 9.0748 5.6659 90 ] C 2020yCat.1350....0G

10 43 26.4618218004 +73 06 11.881196928 [ 9.0748 5.6659 90 ]

134.6334970725261 +41.3461835653931 [ 9.0748 5.6659 90 ]

V(km/s) 2822 [18] / z(~) 0.009457 [0.000060] / cz 2835.14 [17.99] D 2002LEDA.........0P

E E 2003A&A...412...45P

1.510 1.419 65 (NIR) C 2006AJ....131.1163S

B 12.0 [~] E ~

G 19.227411 [0.031338] C 2020yCat.1350....0G

J 8.925 [0.010] C 2006AJ....131.1163S

H 8.236 [0.013] C 2006AJ....131.1163S

K 7.965 [0.017] C 2006AJ....131.1163S

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`NGC 3348`	`2MASXI J1047081+725012`	`UZC J104710.1+725023`	`[CHM2007] LDC 760 J104709.99+7250228`
`LEDA 32216`	`MCG+12-10-077`	`Z 333-54`	`[FWB89] Galaxy 205`
`2MASX J10470999+7250228`	`UGC 5875`	`Z 1043.4+7306`	`Gaia DR3 1077373068526021760`

References (127 between 1850 and 2026) (Total 127)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).

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Data at NED - NASA/IPAC Extragalactic Database : NGC 3348

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NGC 3348 2MASX J10470999+7250228 UGC 5875 Gaia DR3 1077373068526021760

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