Hawaii 167: A compact absorption-line object at Z = 2.35
| العنوان: | Hawaii 167: A compact absorption-line object at Z = 2.35 |
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| المؤلفون: | E. Egami, Ray J. Weymann, Antoinette Songaila, J.-S. Huang, Andrew J. Pickles, L. L. Cowie, Richard J. Wainscoat, E. M. Hu, S. E. Ridgway |
| المصدر: | The Astrophysical Journal. 432:L83 |
| بيانات النشر: | American Astronomical Society, 1994. |
| سنة النشر: | 1994 |
| مصطلحات موضوعية: | Physics, Doubly ionized oxygen, Astronomy, Balmer series, Astronomy and Astrophysics, Quasar, Astrophysics, Spectral line, Redshift, Galaxy, symbols.namesake, Space and Planetary Science, Galaxy formation and evolution, symbols, H-alpha |
| الوصف: | During the course of the Hawaii K-band (2.1 micrometer) survey we have detected a compact object, Hawaii 167, lying at a redshift of 2.33, in which are seen both low- and high-ionization absorption lines. In the near-infrared we see broad H alpha emission at a redshift of 2.35 but do not detect the other Balmer lines, (O II) lambda 3727, or (O III) lambda 5007. The absence of strong Mg II or C IV emission in the rest ultraviolet suggests that, at these wavelengths, we may be seeing a poststarburst galaxy rather than a quasar. Indeed, this class of object may be common enough to represent a major episode of galaxy formation, possibly the formation of the spheroids. However, Q0059-2735, the most extreme member of the class of Mg II absorbing broad absorption line quasars, is very similar to the present object, and there may be an evolutionary sequence or some other close connection between Hawaii 167 and the broad absorption line quasars. |
| تدمد: | 1538-4357 0004-637X |
| DOI: | 10.1086/187517 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::720084ecb49ff7dc3e76eea4197cc2b5 https://doi.org/10.1086/187517 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi...........720084ecb49ff7dc3e76eea4197cc2b5 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15384357 0004637X |
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| DOI: | 10.1086/187517 |