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Using Bars as Signposts of Galaxy Evolution at High and Low Redshifts

Sheth, Kartik and Menéndez-Delmestre, Karín and Scoville, Nick and Jarrett, Tom and Strubbe, Linda and Regan, Michael W. and Schinnerer, Eva and Block, David L. (2004) Using Bars as Signposts of Galaxy Evolution at High and Low Redshifts. In: Penetrating Bars through Masks of Cosmic Dust: The Hubble Tuning Fork strikes a New Note. Astrophysics and Space Science Library. No.319. Springer Netherlands , Dordrecht, pp. 405-414. ISBN 978-94-015-7085-5.

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An analysis of the NICMOS Deep Field shows that there is no evidence of a decline in the bar fraction beyond z~0.7, as previously claimed; both bandshifting and spatial resolution must be taken into account when evaluating the evolution of the bar fraction. Two main caveats of this study were a lack of a proper comparison sample at low redshifts and a larger number of galaxies at high redshifts. We address these caveats using two new studies. For a proper local sample, we have analyzed 134 spirals in the near-infrared using 2MASS (main results presented by Menendez-Delmestre in this volume) which serves as an ideal anchor for the low-redshift Universe. In addition to measuring the mean bar properties, we find that bar size is correlated with galaxy size and brightness, but the bar ellipticity is not correlated with these galaxy properties. The bar length is not correlated with the bar ellipticity. For larger high redshift samples we analyze the bar fraction from the 2-square degree COSMOS ACS survey. We find that the bar fraction at z~0.7 is ~50%, consistent with our earlier finding of no decline in bar fraction at high redshifts.

Item Type:Book Section
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URLURL TypeDescription Paper
Sheth, Kartik0000-0002-5496-4118
Menéndez-Delmestre, Karín0000-0003-3153-5123
Scoville, Nick0000-0002-0438-3323
Schinnerer, Eva0000-0002-3933-7677
Additional Information:© 2004 Springer Science+Business Media New York.
Series Name:Astrophysics and Space Science Library
Issue or Number:319
Record Number:CaltechAUTHORS:20191007-084745271
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:99110
Deposited By: Tony Diaz
Deposited On:07 Oct 2019 16:11
Last Modified:09 Mar 2020 13:19

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