High Velocity Dispersion in A Rare Grand Design Spiral Galaxy at Redshift z=2.18

Abstract

Although relatively common in the local Universe, only one grand-design spiral galaxy has been spectroscopically confirmed to lie at z>2 (HDFX 28; z=2.011), and may prove to be a major merger that simply resembles a spiral in projection. The rarity of spirals has been explained as a result of disks being dynamically 'hot' at z>2 which may instead favor the formation of commonly-observed clumpy structures. Alternatively, current instrumentation may simply not be sensitive enough to detect spiral structures comparable to those in the modern Universe. At redshifts <2, the velocity dispersion of disks decreases, and spiral galaxies are more numerous by z~1. Here we report observations of the grand design spiral galaxy Q2343-BX442 at z=2.18. Spectroscopy of ionized gas shows that the disk is dynamically hot, implying an uncertain origin for the spiral structure. The kinematics of the galaxy are consistent with a thick disk undergoing a minor merger, which can drive the formation of short-lived spiral structure. A duty cycle of < 100 Myr for such tidally-induced spiral structure in a hot massive disk is consistent with their rarity.

Accepted for publication in Nature (July 19 2012). Includes 15-page supplement

References in corpus (12)

• The Mass-Metallicity Relation at z~2
• From rings to bulges: evidence for rapid secular galaxy evolution at z~2 from integral field spectroscopy in the SINS survey
• Forming Disk Galaxies in Lambda CDM Simulations
• The Stellar, Gas and Dynamical Masses of Star-Forming Galaxies at z~2
• The rapid formation a large rotating disk galaxy three billion years after the Big Bang
• Damped Lyman Alpha Systems in Galaxy Formation Simulations
• Observations of Thick Disks in the Hubble Space Telescope Ultra Deep Field
• Rest-Frame Optical Spectra of Three Strongly Lensed Galaxies at z~2
• Unstable disks at high redshift: Evidence for smooth accretion in galaxy formation
• The Physical Nature of Rest-UV Galaxy Morphology During the Peak Epoch of Galaxy Formation
• Integral Field Spectroscopy of High-Redshift Star Forming Galaxies with Laser Guided Adaptive Optics: Evidence for Dispersion-Dominated Kinematics
• Spiral and Bar Instabilities Provoked by Dark Matter Satellites

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