1995A&A...297...28B


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.29CET15:09:03

1995A&A...297...28B - Astronomy and Astrophysics, volume 297, 28-36 (1995/5-1)

Stellar dynamics in E+E pairs of galaxies. I. NGC 741/742, 1587/88 and 2672/73. The data.

BONFANTI P., RAMPAZZO R., COMBES F., PRUGNIEL P. and SULENTIC J.W.

Abstract (from CDS):

We present a kinematic study of three E+E galaxy pairs, NGC 741/742, 1587/1588 (CPG 99) and 2672/2673 (CPG 175). All three pairs show a similar morphological distortion (i.e. the off-centering of inner versus outer isophotes; Davoust & Prugniel 1988A&A...201L..30D) which is ascribed to the ongoing interaction. The data was obtained at the CFHT equipped with the Herzberg Spectrograph at a resolution of 0.88Apx–1. NGC 741 and 2673 show significant rotation along the apparent minor axis. Both components of CPG 99 rotate very fast (with no evidence for rotation along the minor axis of either component). None of the galaxies show abnormally high central velocity dispersion. We report some of the first clear detections of well defined velocity dispersion curves for interacting pairs. They show a systematic decrease with distance from the center, as expected for normal ellipticals. They do not show obvious heating in the outer parts as was previously reported. NGC 741 and 2672 show, respectively, possible U and inverse U-shaped structure in their velocity profiles.

Abstract Copyright:

Journal keyword(s): galaxies: individual: NGC741/2 (NGC 741, NGC 742), 1587/8 (NGC 1587, NGC 1588), 2672/3 (NGC 2672, NGC 2673) - galaxies: kinematics and dynamics - galaxies: elliptical - galaxies: interaction

VizieR on-line data: <Available at CDS (J/A+A/297/28): table3>

Simbad objects: 13

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Number of rows : 13

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NGC 741 rG 01 56 20.959 +05 37 43.77   13.2       ~ 267 2
2 NGC 742 GiP 01 56 24.162 +05 37 36.06   14.8       ~ 50 0
3 * kap Per PM* 03 09 29.7715574 +44 51 27.146337 5.62 4.79 3.81 3.07 2.57 G9.5IIIb 225 0
4 NGC 1587 GiP 04 30 39.921 +00 39 42.16   13.3       ~ 128 0
5 NGC 1588 GiP 04 30 43.86 +00 39 52.8   14.1       ~ 78 0
6 * kap Gem ** 07 44 26.8535692 +24 23 52.787227 5.19 4.49 3.57 2.86 2.41 G8III-IIIb 286 0
7 NGC 2672 IG 08 49 21.896 +19 04 29.86   13.1       ~ 102 0
8 APG 167 GrG 08 49 23.0 +19 04 28           ~ 78 0
9 NGC 2673 GiP 08 49 24.27 +19 04 25.8   14.4       ~ 37 0
10 HD 84937 PM* 09 48 56.09801 +13 44 39.3237 8.49 8.68 8.32 7.97 7.70 F8Vm-5 723 0
11 NGC 4782 rG 12 54 35.698 -12 34 06.92   13 12.75 13.11   ~ 140 2
12 NGC 4783 GiP 12 54 36.36 -12 33 30.2   12.5 12.80     ~ 118 1
13 * 1 Peg PM* 21 22 05.1992768 +19 48 16.236458 6.25 5.20 4.09 3.30 2.76 K1III 171 0

    Equat.    Gal    SGal    Ecl

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2020.10.29-15:09:03

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