Tag Archives: emission

“Counterpart” method for abundance determinations in HII regions

L.S. Pilyugin (1,2), E.K. Grebel (2), L. Mattsson (3) ((1) Main Astronomical Observatory of National Academy of Sciences of Ukraine, 27 Zabolotnogo str., 03680 Kiev, Ukraine; (2) Astronomisches Rechen-Institut, Zentrum für Astronomie der Universität Heidelberg, Mönchhofstr. 12–14, 69120 Heidelberg, Germany; … Continue reading

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Element Distributions In The Crab Nebula

Timothy J. Satter eld, Andrea M. Katz, Adam R. Sibley & Gordon M. MacAlpine (Department of Physics and Astronomy, Trinity University, San Antonio, TX 78212 and Alan Uomoto Carnegie Institution for Science, The Observatories, Pasadena, CA 91101) Images of the Crab … Continue reading

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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

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Spectroscopic evidence of charge exchange X-ray emission from galaxies

Q. DanielWang (1) & Jiren Liu (2) ((1) University of Massachusetts, Amherst, USA; (2) National Astronomical Observatories, Chinese Academy of Sciences, Beijing, China) What are the origins of the soft X-ray line emission from non-AGN galaxies? XMM-Newton RGS spectra of … Continue reading

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The Curious Conundrum Regarding Sulfur Abundances In Planetary Nebulae

R.B.C. Henry (1), Angela Speck (2), Amanda I. Karakas (3), Gary J. Ferland (4), Mason Maguire (5) ((1) University of Oklahoma, Norman, OK; (2) University of Missouri, Columbia, MO, USA; (3) Mount Stromlo Observatory,  Australia; (4)  University of Kentucky, Lexington, … Continue reading

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Constraining the physical properties of Type II-P supernovae using nebular phase spectra

Kate Maguire (1,2) Anders Kerkstrand (3) Stephen J. Smartt (2) Claes Fransson (3) Andrea Pastorello (4) Stefano Benetti (4) Stefano Valenti (4) Filomena Bufano (5) Giorgios Leloudas (6) (1) Department of Physics (Astrophysics), University of Oxford (2)Astrophysics Research Centre, Queen’s … Continue reading

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Helium line emission – Its relation to atmospheric structure

Vincenzo Andretta (INAF – Osservatorio Astronomico di Capodimonte, Italy) The title of this talk reprises the title of a 1980 paper by Carole Jordan on the anomalously high intensities of helium lines when compared with lines of other ions formed … Continue reading

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