Search Results - "emission line"

The ultraviolet-to-mid-infrared spectral energy distribution of weak emission line quasars by Lane, R., Shemmer, O., Diamond-Stanic, A., Fan, X., Anderson, S., Brandt, W., Plotkin, Richard, Richards, G., Schneider, D., Strauss, M.

“…We present Spitzer Space Telescope photometry of 18 Sloan Digital Sky Survey (SDSS) quasars at 2.7 = z = 5.9 which have weak or undetectable high-ionization emission lines in their rest-frame ultraviolet (UV) spectra (hereafter weak-lined quasars, or WLQs). …”
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Total polarization of the 185 nm emission line of mercury excited by electron impact by AuBendorf, G., Juttemann, F., Muktavat, K., Sharma, L., Srivastava, R., Stauffer, A., Bartschat, K., Fursa, Dmitry, Bray, Igor, Hanne, G.

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X-ray and multiwavelength insights into the nature of weak emission-line quasars at low redshift by Wu, J., Brandt, W., Anderson, S., Diamond-Stanic, A., Hall, P., Plotkin, Richard, Schneider, D., Shemmer, O.

“…We report on the X-ray and multiwavelength properties of 11 radio-quiet quasars with weak or no emission lines identified by the Sloan Digital Sky Survey (SDSS) with redshift z = 0.4-2.5. …”
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Detection of rest-frame optical lines from x-shooter spectroscopy of weak emission-line quasars by Plotkin, Richard, Shemmer, O., Trakhtenbrot, B., Anderson, S., Brandt, W., Fan, X., Gallo, E., Lira, P., Luo, B., Richards, G., Schneider, D., Strauss, M., Wu, J.

“…Over the past 15 yr, examples of exotic radio-quiet quasars with intrinsically weak or absent broad emission line regions (BELRs) have emerged from large-scale spectroscopic sky surveys. …”
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A microlensing measurement of the size of the broad emission-line region in the lensed quasar QSO 2237+0305 by Wayth, Randall, O'Dowd, M., Webster, R.

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Steep Hard-X-Ray Spectra Indicate Extremely High Accretion Rates in Weak Emission-line Quasars by Marlar, A., Shemmer, O., Anderson, S., Brandt, W., Diamond-Stanic, A., Fan, X., Luo, B., Plotkin, Richard, Richards, G., Schneider, D., Wu, J.

“…We present XMM-Newton imaging spectroscopy of 10 weak emission-line quasars (WLQs) at , six of which are radio-quiet, and four that are radio-intermediate. …”
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(e, e?)-coincidence studies to determine spin-resolvedStokes parameters of the 185 nm emission line inmercury by AuBendorf, G., Juttemann, F., Muktavat, K., Sharma, L., Srivastava, R., Stauffer, A., Bartschat, K., Fursa, Dmitry, Bray, Igor, Hanne, G.

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OMEGA–OSIRIS mapping of emission-line galaxies in A901/2:IV. Extinction of star formation estimators with inclination by Wolf, Christian, Weinzirl, Tim, Aragón-Salamanca, Alfonso, Gray, Meghan E., Rodríguez del Pino, Bruno, Chies-Santos, Ana L., Bamford, Steven P., Böhm, Asmus, Harborne, Katherine

“…As diagnostics we use mass-to-light ratios in three passbands: the UV continuum at 280 nm, the Hα emission line, and the FIR 24μ band. We include a study of inclination trends in the IR/UV ratio (‘IRX’) and the IR/Hα ratio. …”
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A VLBA Search for Binary Black Holes in Active Galactic Nuclei with Double-peaked Optical Emission Line Spectra by Tingay, Steven, Wayth, Randall

“…The double-peaked nature of the optical emission line spectra has been suggested as evidence for the existence of binary black holes in these AGNs, although this interpretation is controversial. …”
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X-ray insights into the nature of PHL 1811 analogs and weak emission-line quasars: Unification with a geometrically thick accretion disk? by Luo, B., Brandt, W., Hall, P., Wu, J., Anderson, S., Garmire, G., Gibson, R., Plotkin, Richard, Richards, G., Schneider, D., Shemmer, O., Shen, Y.

“…We present an X-ray and multiwavelength study of 33 weak emission-line quasars (WLQs) and 18 quasars that are analogs of the extreme WLQ, PHL 1811, at z ˜ 0.52.9. …”
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ALMA detection of a disc-dominated [C II] emission line at z = 4.6 in the luminous QSO J1554+1937 by Kimball, A., Lacy, M., Lonsdale, C., Macquart, Jean-Pierre

“…We present observations and analysis of an unusual [C ii] emission line in the very luminous quasi-stellar object (QSO) SDSS J155426.16+193703.0 at z ~ 4.6. …”
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OMEGA – OSIRIS Mapping of Emission-line Galaxies in A901/2: II. Environmental influence on integrated star formation properties and AGN activity by Rodríguez del Pino, Bruno, Aragón-Salamanca, Alfonso, Chies-Santos, Ana L., Weinzirl, Tim, Bamford, Steven P., Gray, Meghan E., Böhm, Asmus, Wolf, Christian, Maltby, David T.

“…Using optical emission-line diagnostics, we identify a significant number of galaxies hosting AGN, which tend to have high masses and a broad range of morphologies. …”
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OMEGA - OSIRIS mapping of emission-line galaxies in A901/2: III. - Galaxy properties across projected phase space in A901/2 by Weinzirl, Tim, Aragón-Salamanca, Alfonso, Gray, Meghan E., Bamford, Steven P., Rodriguez Del Pino, Bruno, Chies-Santos, Ana L., Böhm, Asmus, Wolf, Christian, Cool, Richard J.

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OMEGA - OSIRIS Mapping of Emission-line Galaxies in A901/2: I. Survey description, data analysis, and star formation and AGN activity in the highest density regions by Chies-Santos, A.L., Rodriguez del Pino, B., Aragón-Salamanca, A., Bamford, S.P., Gray, M.E., Wolf, C., Bohm, A., Maltby, D.T., Pintos-Castro, I., Sanchez-Portal, M., Weinzirl, T.

“…We present an overview of and first results from the OMEGA (OSIRIS Mapping of Emission-line Galaxies in the multicluster system A901/2) survey. …”
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First discoveries of z > 6 quasars with the DECam Legacy Survey and UKIRT hemisphere survey by Wang, Feige, Fan, Xiaohui, Yang, Jinyi, Wu, Xue-Bing, Yang, Qian, Bian, Fuyan, McGreer, Ian D., Li, Jiang-Tao, Li, Zefeng, Ding, Jiani, Dey, Arjun, Dye, S., Findlay, Joseph R., Green, Richard, James, David, Jiang, Linhua, Lang, Dustin, Lawrence, Andy, Myers, Adam D., Ross, Nicholas P., Schlegel, David J., Shanks, Tom

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Discovery of 16 new z ∼ 5.5 quasars: filling in the redshift gap of quasar color selection by Yang, Jinyi, Fan, Xiaohui, Wu, Xue-Bing, Wang, Feige, Bian, Fuyan, Yang, Qian, McGreer, Ian D., Yi, Weimin, Jiang, Linhua, Green, Richard, Yue, Minghao, Wang, Shu, Li, Zefeng, Ding, Jiani, Dye, S., Lawrence, Andy

Subjects: “…Galaxies: active; Galaxies: high-redshift; Quasars: emission lines; Quasars: general…”
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IGM constraints from the SDSS-III/BOSS DR9 Lyα forest transmission probability distribution function by Lee, K.-G., Hennawi, J.P., Spergel, D.N., Weinberg, D.H., Hogg, D.W., Viel, Matteo, Bolton, James S., Bailey, S., Pieri, M.M., Carithers, W., Schlegel, D.J., Lundgren, B., Palanque-Delabrouille, N., Suzuki, N., Schneider, D.P., Yeche, C.

Subjects: “…intergalactic medium; large-scale structure of universe; methods: data analysis; quasars: absorption lines; quasars: emission lines; techniques: spectroscopic…”
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AT 2017gbl: A dust obscured TDE candidate in a luminous infrared galaxy by Kool, E.C., Reynolds, T.M., Mattila, S., Kankare, E., Pérez-Torres, M.A., Efstathiou, A., Ryder, S., Romero-Cañizales, C., Lu, W., Heikkilä, T., Anderson, Gemma, Berton, M., Bright, J., Cannizzaro, G., Eappachen, D., Fraser, M., Gromadzki, M., Jonker, P.G., Kuncarayakti, H., Lundqvist, P., Maeda, K., Mcdermid, R.M., Medling, A.M., Moran, S., Reguitti, A., Shahbandeh, M., Tsygankov, S., Lebouteiller, V., Wevers, T.

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AT 2019avd: A novel addition to the diverse population of nuclear transients by Malyali, A., Rau, A., Merloni, A., Nandra, K., Buchner, J., Liu, Z., Gezari, S., Sollerman, J., Shappee, B., Trakhtenbrot, B., Arcavi, I., Ricci, C., Van Velzen, S., Goobar, A., Frederick, S., Kawka, A., Tartaglia, L., Burke, J., Hiramatsu, D., Schramm, M., Van Der Boom, D., Anderson, Gemma, Miller-Jones, James, Bellm, E., Drake, A., Duev, D., Fremling, C., Graham, M., Masci, F., Rusholme, B., Soumagnac, M., Walters, R.

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ALMA Detections of CO Emission in the Most Luminous, Heavily Dust-obscured Quasars at z > 3 by Fan, L., Knudsen, K., Fogasy, J., Drouart, Guillaume

“…All three QSO hosts are clearly detected both in continuum and in CO(4 − 3) emission line. Based on CO(4 − 3) emission line detection, we derive the molecular gas masses (~1010−11 M ⊙), suggesting that these QSOs are gas-rich systems. …”
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