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Monthly Archives: April 2012
XMM-Newton observations of GX 13+1: correlation between photoionised absorption and broad line emission
M. Díaz Trigo (1), L. Sidoli (2), L. Boirin (3), and A. N. Parmar (4) ((1) ESO, Karl-Schwarzschild-Strasse 2, D-85748 Garching bei München, Germany (2) INAF-IASF, via Bassini 15, I-20133 Milano, Italy (3) Observatoire Astronomique de Strasbourg, 11 rue de … Continue reading
Posted in Atomic data applications
Tagged column density, equivalent width, photoionization, XMM-Newton
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A study of the role of Lyman β fluorescence on OI line strengths in Be stars
Blesson Mathew (1), D. P. K. Banerjee (1), A. Subramaniam (2) and N. M. Ashok (1) ((1)Astronomy and Astrophysics Division, Physical Research Laboratory, Navrangapura, Ahmedabad – 380 009, Gujarat, India; (2) Indian Institute of Astrophysics, Bangalore – 560 034, India) … Continue reading
Abundances of PNe in the Outer Disk of M31
Karen B. Kwitter (1), Emma M. M. Lehman (2), Bruce Balick (3) & R.B.C. Henry (4) ((1)Department of Astronomy, Williams College, Williamstown, MA 01267, USA; (2) Department of Astronomy, Williams College, Williamstown, MA 01267, USA; (3) Department of Astronomy, University of … Continue reading
Posted in Atomic data applications
Tagged M31, Milky Way, O III, photoionization, spectroscopy
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A classification of HII regions based on Oxygen and Helium lines: The cases of TOL2146-391 and TOL0357-3915
Antonio Peimbert, María A. Peña-Guerrero & Manuel Peimbert (Instituto de Astronomía, Universidad Nacional Autónoma de México, Apdo. Postal 70-264, México, C.P. 04510, D.F., Mexico) We present long slit spectrophotometry of two HII regions: TOL2146-391 and TOL0357-3915. We performed a detailed … Continue reading
Posted in Atomic data applications
Tagged abundance, HeI, oxygen, recombination lines, spectrophotometry, temperature
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RECALIBRATION OF PAGEL’S METHOD FOR H II REGIONS CONSIDERING THE THERMAL STRUCTURE, THE IONIZATION STRUCTURE, AND THE DEPLETION OF O INTO DUST GRAINS
María A. Peña-Guerrero, Antonio Peimbert & Manuel Peimbert (Instituto de Astronomía, Universidad Nacional Autónoma de México, Apdo. Postal 70-264, México 04510 D.F., Mexico) Using a sample of 28 HII regions from the literature with measured temperature inhomogeneity parameter, t^2, we … Continue reading
Investigation of the electromagnetically induced transparency in era of cosmological hydrogen recombination
D. Solovyev (1,2), V. K. Dubrovich (3,4) & G. Plunien (5) ((1) V. A. Fock Institute of Physics, St. Petersburg State University, Petrodvorets, Oulianovskaya 1, 198504, St. Petersburg, Russia; (2) Max-Planck-Institut f¨ur Physik Komplexer Systeme, D-01187, Germany (3) St. Petersburg … Continue reading
Posted in Atomic data production
Tagged cosmic microwave background, cosmology, EIT, hydrogen, Sobolev
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Resolving the electron temperature discrepancies in HII Regions and Planetary Nebulae: kappa-distributed electrons
David C. Nicholls (1), Michael A. Dopita (1,2) & Ralph S. Sutherland (1) ((1) Research School of Astronomy and Astrophysics, Australian National University, Cotter Rd., Weston ACT 2611, Australia; (2) Astronomy Department, King Abdulaziz University, P.O. Box 80203, Jeddah, Saudi … Continue reading
Probing the time variability of five Fe low broad absorption line quasars
M. Vivek (1), R. Srianand (2), P. Petitjean (3), P. Noterdaeme (3), V.Mohan (2), A. Mahabal (4) & V.C. Kuriakose (1) ((1)Department of Physics, Cochin University of Science and Technology, Kochi 682022, India; (2) Inter University Centre for Astronomy and … Continue reading
Posted in Atomic data applications
Tagged absorption, emission, Fe, fine structure, ionization, spectroscopy, variability
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