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The fate of spiral galaxies in clusters: The star formation history of the anemic Virgo cluster galaxy NGC 4569

Boselli, A. and Boissier, S. and Cortese, L. and Gil de Paz, A. and Seibert, M. and Madore, B. F. and Buat, V. and Martin, D. C. (2006) The fate of spiral galaxies in clusters: The star formation history of the anemic Virgo cluster galaxy NGC 4569. Astrophysical Journal, 651 (2). pp. 811-821. ISSN 0004-637X.

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We present a new method for studying the star formation history of late-type cluster galaxies undergoing gas starvation or a ram pressure stripping event by combining bidimensional multifrequency observations with multizone models of galactic chemical and spectrophotometric evolution. This method is applied to the Virgo Cluster anemic galaxy NGC 4569. We extract radial profiles from recently obtained UV GALEX images at 1530 and 2310 Å, from visible and near-IR narrow (Hα) and broadband images at different wavelengths (u, B, g, V, r, i, z, J, H, and K), from Spitzer IRAC and MIPS images, and from atomic and molecular gas maps. The model in the absence of interaction (characterized by its rotation velocity and spin parameter) is constrained by the unperturbed H-band light profile and by the Hα rotation curve. We can reconstruct the observed total gas radial density profile and the light surface brightness profiles at all wavelengths in a ram pressure stripping scenario by making simple assumptions about the gas removal process and the orbit of NGC 4569 inside the cluster. The observed profiles cannot be reproduced by simply stopping gas infall, thus mimicking starvation. Gas removal is required, which is more efficient in the outer disk, inducing radial quenching in the star formation activity, as observed and reproduced by the model. This observational result, consistent with theoretical predictions that a galaxy cluster-IGM interaction is able to modify structural disk parameters without gravitational perturbations, is discussed in the framework of the origin of lenticular galaxies in clusters

Item Type:Article
Related URLs:
URLURL TypeDescription
Boissier, S.0000-0002-9091-2366
Cortese, L.0000-0002-7422-9823
Gil de Paz, A.0000-0001-6150-2854
Seibert, M.0000-0002-1143-5515
Madore, B. F.0000-0002-1576-1676
Martin, D. C.0000-0002-8650-1644
Additional Information:© 2006 The American Astronomical Society. Received 2006 June 8; accepted 2006 July 13. GALEX is a NASA Small Explorer, launched in 2003 April. We gratefully acknowledge NASA’s support for construction, operation, and science analysis for the GALEX mission, developed in cooperation with the Centre National d’Etudes Spatiales (CNES) of France and the Korean Ministry of Science and Technology. We thank G. Gavazzi and N. Prantzos for their long-term collaboration in the subjects studied in this paper. S. B. thanks the CNES for its funding through GALEX-Marseille. We wish to thank B. Vollmer and J. Kenney for their valuable comments, and the GALEX SODA team for their help with the data reduction.
Group:Space Astrophysics Laboratory
Funding AgencyGrant Number
Subject Keywords:galaxies: clusters: individual (Virgo); galaxies: individual (NGC 4569-M90); galaxies: interactions; ultraviolet: galaxies
Issue or Number:2
Record Number:CaltechAUTHORS:20110217-101826211
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Official Citation:The Fate of Spiral Galaxies in Clusters: The Star Formation History of the Anemic Virgo Cluster Galaxy NGC 4569 A. Boselli, S. Boissier, L. Cortese, A. Gil de Paz, M. Seibert, B. F. Madore, V. Buat, and D. C. Martin doi: 10.1086/507766
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:22349
Deposited By: Ruth Sustaita
Deposited On:17 Feb 2011 19:25
Last Modified:09 Mar 2020 21:13

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