تقرير
ISM properties of a Massive Dusty Star-Forming Galaxy discovered at z ~ 7
| العنوان: | ISM properties of a Massive Dusty Star-Forming Galaxy discovered at z ~ 7 |
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| المؤلفون: | Strandet, M. L., Weiß, A., De Breuck, C., Marrone, D. P., Vieira, J. D., Aravena, M., Ashby, M. L. N., Béthermin, M., Bothwell, M. S., Bradford, C. M., Carlstrom, J. E., Chapman, S. C., Cunningham, D. J. M., Chen, Chian-Chou, Fassnacht, C. D., Gonzalez, A. H., Greve, T. R., Gullberg, B., Hayward, C. C., Hezaveh, Y., Litke, K., Ma, J., Malkan, M., Menten, K. M., Miller, T., Murphy, E. J., Narayanan, D., Phadke, K. A., Rotermund, K. M., Spilker, J. S., Sreevani, J. |
| سنة النشر: | 2017 |
| المجموعة: | Astrophysics |
| مصطلحات موضوعية: | Astrophysics - Astrophysics of Galaxies |
| الوصف: | We report the discovery and constrain the physical conditions of the interstellar medium of the highest-redshift millimeter-selected dusty star-forming galaxy (DSFG) to date, SPT-S J031132-5823.4 (hereafter SPT0311-58), at $z=6.900 +/- 0.002$. SPT0311-58 was discovered via its 1.4mm thermal dust continuum emission in the South Pole Telescope (SPT)-SZ survey. The spectroscopic redshift was determined through an ALMA 3mm frequency scan that detected CO(6-5), CO(7-6) and [CI](2-1), and subsequently confirmed by detections of CO(3-2) with ATCA and [CII] with APEX. We constrain the properties of the ISM in SPT0311-58 with a radiative transfer analysis of the dust continuum photometry and the CO and [CI] line emission. This allows us to determine the gas content without ad hoc assumptions about gas mass scaling factors. SPT0311-58 is extremely massive, with an intrinsic gas mass of $M_{\rm gas} = 3.3 \pm 1.9 \times10^{11}\,M_{\odot}$. Its large mass and intense star formation is very rare for a source well into the Epoch of Reionization. Comment: Accepted by ApJL, Fixed compilation problem in v.2 |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.3847/2041-8213/aa74b0 |
| URL الوصول: | http://arxiv.org/abs/1705.07912 |
| رقم الأكسشن: | edsarx.1705.07912 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.3847/2041-8213/aa74b0 |
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