2005A&A...439..921V


C.D.S. - SIMBAD4 rel 1.7 - 2021.03.04CET19:48:44

2005A&A...439..921V - Astronomy and Astrophysics, volume 439, 921-933 (2005/9-1)

NGC 4254: a spiral galaxy entering the Virgo cluster.

VOLLMER B., HUCHTMEIER W. and VAN DRIEL W.

Abstract (from CDS):

Deep Effelsberg Hi spectra of the one-armed, bright Virgo cluster spiral galaxy NGC 4254 are presented. Five different positions were observed in the 21 cm Hi line with the Effelsberg 100-m telescope: one in the center and 4 located one HPBW to the NE, NW, SW, and SE, respectively, from the galaxy center. The spectra are compared to existing deep VLA observations, and the single dish and interferometric Hi data are used to constrain a dynamical model which includes the effects of ram pressure. The peculiar, one-armed spiral pattern of NGC 4254 and its distorted and kinematically perturbed atomic gas distribution can be explained by a close and rapid encounter ∼280Myr ago with another massive Virgo galaxy, followed by ram pressure stripping that is ongoing. The stripping occurs almost face-on, since the angle between the disk and the orbital plane is 70°. The galaxy with which NGC 4254 had its encounter is tentatively identified as the lenticular NGC 4262.

Abstract Copyright:

Journal keyword(s): galaxies: individual: NGC 4254 - galaxies: interactions - galaxies: ISM - galaxies: kinematics and dynamics

Simbad objects: 8

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Number of rows : 8

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 M 99 H2G 12 18 49.625 +14 24 59.36 10.45 10.44 9.87     ~ 789 2
2 NGC 4262 GiG 12 19 30.582 +14 52 39.78 13.00 12.49 11.55     ~ 333 1
3 NAME Vir I ClG 12 26 32.1 +12 43 24   10.00 8.49     ~ 5986 0
4 NGC 4435 GiG 12 27 40.503 +13 04 44.48 12.23 11.74 10.80     ~ 416 2
5 NGC 4438 LIN 12 27 45.652 +13 00 30.92 11.37 11.02 10.17     ~ 586 3
6 M 87 BiC 12 30 49.42338230 +12 23 28.0438581 10.16 9.59 8.63   7.49 ~ 6353 3
7 NGC 4639 GiP 12 42 52.3781396179 +13 15 26.712929286   13.62 12.72     ~ 566 0
8 3C 286 Sy1 13 31 08.2885060664 +30 30 32.960825108   17.51 17.25     ~ 3842 2

    Equat.    Gal    SGal    Ecl

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2021.03.04-19:48:44

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