Submillimetre Detection of the z=2.83 Lyman-Break Galaxy, Westphal-MM8, and Implications for SCUBA2

التفاصيل البيبلوغرافية
العنوان: Submillimetre Detection of the z=2.83 Lyman-Break Galaxy, Westphal-MM8, and Implications for SCUBA2
المؤلفون: Chapman, Scott C., Casey, Caitlin M.
سنة النشر: 2009
المجموعة: Astrophysics
مصطلحات موضوعية: Astrophysics - Cosmology and Nongalactic Astrophysics
الوصف: We present confusion limited submillimetre (submm) observations with the SCUBA camera on the JCMT of the z=2.83 Lyman-break galaxy (LBG), Westphal-MM8, reaching an 850um sensitivity even greater than that achieved in the SCUBA map of the Hubble Deep Field region. The detection of Westphal-MM8 (S_{850um} = 1.98+-0.48mJy), along with the literature submm detections of lensed LBGs, suggest that the LBG population may contribute significantly to the source counts of submm selected galaxies in the 1-2mJy regime. Additionally, submm-luminous LBGs are a viable progenitor population for the recently discovered evolved galaxies at z~2-2.5. These observations represent an important baseline for SCUBA2 observations which will regularly map large regions of the sky to this depth.
Comment: 6 pages, 3 figures; accepted for publication in MNRAS
نوع الوثيقة: Working Paper
DOI: 10.1111/j.1365-2966.2009.14710.x
الوصول الحر: http://arxiv.org/abs/0903.2244Test
رقم الانضمام: edsarx.0903.2244
قاعدة البيانات: arXiv