Report
No significant evolution of relations between Black hole mass and Galaxy total stellar mass up to z~2.5
| العنوان: | No significant evolution of relations between Black hole mass and Galaxy total stellar mass up to z~2.5 |
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| المؤلفون: | Suh, Hyewon, Civano, Francesca, Trakhtenbrot, Benny, Shankar, Francesco, Hasinger, Guenther, Sanders, David B., Allevato, Viola |
| سنة النشر: | 2019 |
| المجموعة: | Astrophysics |
| مصطلحات موضوعية: | Astrophysics - Astrophysics of Galaxies |
| الوصف: | We investigate the cosmic evolution of the ratio between black hole mass (MBH) and host galaxy total stellar mass (Mstellar) out to z~2.5 for a sample of 100 X-ray-selected moderate-luminosity, broad-line active galactic nuclei (AGNs) in the Chandra-COSMOS Legacy Survey. By taking advantage of the deep multi-wavelength photometry and spectroscopy in the COSMOS field, we measure in a uniform way the galaxy total stellar mass using a SED decomposition technique and the black hole mass based on broad emission line measurements and single-epoch virial estimates. Our sample of AGN host galaxies has total stellar masses of 10^10-12Msun, and black hole masses of 10^7.0-9.5Msun. Combining our sample with the relatively bright AGN samples from the literature, we find no significant evolution of the MBH-Mstellar relation with black hole-to-host total stellar mass ratio of MBH/Mstellar~0.3% at all redshifts probed. We conclude that the average black hole-to-host stellar mass ratio appears to be consistent with the local value within the uncertainties, suggesting a lack of evolution of the MBH-Mstellar relation up to z~2.5. Comment: 16 pages, 7 figures, accepted for publication in ApJ |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.3847/1538-4357/ab5f5f |
| URL الوصول: | http://arxiv.org/abs/1912.02824 |
| رقم الانضمام: | edsarx.1912.02824 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.3847/1538-4357/ab5f5f |
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