A massive disk galaxy at z>3 along the sightline of QSO 1508+5714

Abstract

We have obtained deep images in the BVRIJHKs bands of the field centered on QSO 1508+5714 (z_{em} =4.28) with the Suprime camera, FOCAS and MOIRCS cameras on Subaru telescope. We report here the detection of a B-dropout galaxy, which is $3\secpoint 5$ north-west of the QSO sightline. A photometric redshift analysis is presented to complement the color selection. Given the photometric properties of this object ($M=-22.2$, making $L\approx 3L^{\ast }$, if placed at its photometric redshift $z\sim 3.5$), as well as the S$\acute{e}$rsic index ($n\sim 1$) derived from a 2-D imaging decomposition of the HST WFPC2 image taken in the $I_{F814}$ filter, the identified system is consistent with a massive disk galaxy at z>3. If confirmed, it would be one of the most distant massive disk galaxies known so far.

12 pages, 6 figures, accepted by PASJ, Vol.61/No.5, 2009

References in corpus (6)

• Subaru Deep Survey V. A Census of Lyman Break Galaxies at z=4 and 5 in the Subaru Deep Fields: Photometric Properties
• GEMS: Galaxy fitting catalogues and testing parametric galaxy fitting codes
• Spectroscopic Identification of Massive Galaxies at z~2.3 with Strongly Suppressed Star Formation
• Morphologies and Color Gradients of Luminous Evolved Galaxies at z~1.5
• Morphologies of Two Massive Old Galaxies at z ~ 2.5
• Adaptive Optics Rest-Frame V-band Imaging of Lyman Break Galaxies at z~3: High-surface Density Disk-like Galaxies ?