2021MNRAS.500...40R

Query : 2021MNRAS.500...40R

2021MNRAS.500...40R - Mon. Not. R. Astron. Soc., 500, 40-53 (2021/January-1)

Morphometry as a probe of the evolution of jellyfish galaxies: evidence of broadening in the surface brightness profiles of ram-pressure stripping candidates in the multicluster system A901/A902.

ROMAN-OLIVEIRA F., CHIES-SANTOS A.L., FERRARI F., LUCATELLI G. and RODRIGUEZ DEL PINO B.

Abstract (from CDS):

We explore the morphometric properties of a group of 73 ram-pressure stripping candidates in the A901/A902 multicluster system, at z∼ 0.165, to characterize the morphologies and structural evolution of jellyfish galaxies. By employing a quantitative measurement of morphometric indicators with the algorithm MORFOMETRYKA on Hubble Space Telescope (F606W) images of the galaxies, we present a novel morphology-based method for determining trail vectors. We study the surface brightness profiles and curvature of the candidates and compare the results obtained with two analysis packages, MORFOMETRYKA and IRAF/ELLIPSE on retrieving information of the irregular structures present in the galaxies. Our morphometric analysis shows that the ram-pressure stripping candidates have peculiar concave regions in their surface brightness profiles. Therefore, these profiles are less concentrated (lower Sersic indices) than other star-forming galaxies that do not show morphological features of ram-pressure stripping. In combination with morphometric trail vectors, this feature could both help identify galaxies undergoing ram-pressure stripping and reveal spatial variations in the star formation rate.

Abstract Copyright: © 2020 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): galaxies: clusters: intracluster medium - galaxies: evolution - galaxies: irregular

Simbad objects: 6

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Number of rows : 6
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 NAME ACO 901-902 SW Group ClG 09 55 38.4 -10 10 18           ~ 17 1
2 NAME ACO 901B ClG 09 55 57.4 -09 59 03           ~ 23 0
3 NAME ACO 901-902 Supercluster SCG 09 56 -10.0           ~ 127 1
4 ACO 901 ClG 09 56 09.7 -09 56 17           ~ 113 1
5 BAX 149.1100-09.9560 ClG 09 56 26.4 -09 57 22           ~ 27 0
6 ACO 902 ClG 09 56 33.600 -10 09 13.10           ~ 61 1

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