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

Yiping Wang, Toru Yamada, Ichi Tanaka, Masanori Iye

Research output: Contribution to journalArticlepeer-review


We have obtained deep images in the BVRIJHKs bands of the field centered on QSO 1508+5714 (zem = 4.28) with the Suprime-Cam, FOCAS, and MOIRCS cameras on Subaru telescope. We report here on the detection of a B-dropout galaxy, which is 3.″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 ≈ 3 L *, if placed at its photometric redshift, z ∼ 3.5), as well as the Sérsic index (n ∼ 1) derived from a 2-D imaging decomposition of the HST WFPC2 image taken with the If814 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.

Original languageEnglish
Pages (from-to)1179-1184
Number of pages6
JournalPublications of the Astronomical Society of Japan
Issue number5
Publication statusPublished - 2009
Externally publishedYes


  • Galaxies: formation
  • Galaxies: high redshift-quasars: individual (QSO 1508+5714)
  • Intergalactic medium

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


Dive into the research topics of 'A massive disk galaxy at z > 3 along the line of sight of QSO 1508+5714'. Together they form a unique fingerprint.

Cite this