AChandraLook at Five of the Broadest Double‐Peaked Balmer Line Emitters
نویسندگان
چکیده
منابع مشابه
A Balmer-line Broad Absorption Line Quasar
I report the discovery of blueshifted broad absorption line (BAL) troughs in at least six transitions of the Balmer series of hydrogen (Hβ to H9) and in Ca II, Mg II and excited Fe II in the quasar SDSS J125942.80+121312.6. This is only the fourth active galactic nucleus known to exhibit Balmer absorption, all four in conjunction with low-ionization BAL systems containing excited Fe II. The sub...
متن کاملBalmer line shifts in quasars
We offer a broad review of Balmer line phenomenology in type 1 active galactic nuclei, briefly summarising luminosity and radio loudness effects, and discussing interpretation in terms of nebular physics along the 4D eigenvector 1 sequence of quasars. We stress that relatively rare, peculiar Balmer line profiles (i.e., with large shifts with respect to the rest frame or double and multiple peak...
متن کاملDoppler Profile Measurements of the Geocoronal Hydrogen Balmer Alpha Line
Results of high-resolution measurements of the geocoronal hydrogen Balmer alpha line profile made during se4eral nights in December 1971, May 1972, and October 1972 are presented. The measured intensities are found to be in general agreement with the theory and earlier measurements under essentially similar conditions, and the measured geocoronal hydrogen temperatures are found to be somewhat l...
متن کاملThe Hα Balmer line as an effective temperature criterion
Note: this poster is a summary of a more detailed paper
متن کاملBroad, broader, broadest
the patient was admitted to the cardiac care unit. Flecainide and nortriptyline were stopped at admission. Over the next hours, the AV block disappeared and the following subsequent electrocardiograms were recorded (Figs. 2 and 3). What is your diagnosis and can you explain the underlying mechanism? Open Access This article is distributed under the terms of the Creative Commons Attribution Lice...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2008
ISSN: 0004-637X,1538-4357
DOI: 10.1086/592143