ALMA Study of the Lensed Galaxy SDP.81

Authors

  • Jazeel H Azeez Department of Physics, College of Science, Al-Nahrain University, Baghdad-Iraq.
  • Sadeem Abbas Fadhil Department of Physics, College of Science, Al-Nahrain University, Baghdad-Iraq.
  • Zainab K. Naser-Alla Department of Physics, College of Science, Al-Nahrain University, Baghdad-Iraq.
  • Zamri Z Abidin Department of Physics, College of Science, University of Malaya, Kuala Lumpur-Malaysia.

Keywords:

Galaxies, High redshift, ALMA, SDP.81

Abstract

In this paper we present high resolution data from Atacama Large Millimeter /sub-millimeter Array (ALMA) of CO (5-4) and CO (8-7) rotational transitions toward the gravitational lensed galaxy (SDP.81). We calculate the molecular gas mass in the clumpy region which is around 1.5´109 Mʘ. We overly the CO(8- 7) and CO(5- 4) intensity distributions to calculate the brightness temperature ratio R85 at various region. The CO line ratio was in the range between 0.39 and 0.75 with an average value about 0.48. This line ratio suggests that most sub-millimeter galaxies, SMGs, include a significant proportion of extended, moderate-density, cool gas.

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Published

2018-10-25

Issue

Vol. 0 No. 1 (2018): Conference

Section

Articles

How to Cite

[1]
“ALMA Study of the Lensed Galaxy SDP.81”, ANJS, no. 1, pp. 69–71, Oct. 2018, Accessed: Apr. 16, 2024. [Online]. Available: https://anjs.edu.iq/index.php/anjs/article/view/2015