Výsledky vyhledávání

Exploring Changes in Quasar Spectral Energy Distributions across C iv Parameter Space

Autor: Rivera, AB, Richards, GT, Gallagher, SC, McCaffrey, TV, Rankine, AL, Hewett, PC, Shemmer, O

Publikováno v: Rivera, A B, Richards, G T, Gallagher, S C, McCaffrey, T V, Rankine, A L, Hewett, P C & Shemmer, O 2022, ' Exploring Changes in Quasar Spectral Energy Distributions across C iv Parameter Space ', Astrophysical Journal, vol. 931, no. 2, 154, pp. 1-19 . https://doi.org/10.3847/1538-4357/ac6a5d
Physics and Astronomy Publications

We examine the UV/X-ray properties of 1378 quasars in order to link empirical correlations to theoretical models of the physical mechanisms dominating quasars as a function of mass and accretion rate. The clarity of these correlations is improved whe

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1255b585ada59e4a54476162d0a93316
https://hdl.handle.net/20.500.11820/6201842a-b88f-4baa-a1b3-de2d870a5513

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Characterizing Quasar C iv Emission-line Measurements from Time-resolved Spectroscopy

Autor: Rivera, AB, Richards, GT, Hewett, PC, Rankine, AL

We use multi-epoch quasar spectroscopy to determine how accurately single-epoch spectroscopy can locate quasars in emission-line parameter space in order to inform investigations where time-resolved spectroscopy is not available. We explore the impro

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5b608d1a6e83d8e6012b4bc7134f8fb3
https://www.repository.cam.ac.uk/handle/1810/309491

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A SCUBA-2 850μm survey of heavily reddened quasars at z ~ 2

Autor: Wethers, CF, Banerji, M, Hewett, PC, Jones, GC

We present new 850$\mu$m SCUBA-2 observations for a sample of 19 heavily reddened Type-I quasars at redshifts $z\sim$2 with dust extinctions of A$_{\rm{V}} \simeq 2-6$ mag. Three of the 19 quasars are detected at $>$3$\sigma$ significance correspondi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d20a561b07cb647e4735ecdb2a6f5437
https://www.repository.cam.ac.uk/handle/1810/301635

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Euclid preparation: V. Predicted yield of redshift 7 < z < 9 quasars from the wide survey

Autor: Barnett, R, Warren, SJ, Mortlock, DJ, Cuby, JG, Conselice, C, Hewett, PC, Willott, CJ, Auricchio, N, Balaguera-Antolínez, A, Baldi, M, Bardelli, S, Bellagamba, F, Bender, R, Biviano, A, Bonino, D, Bozzo, E, Branchini, E, Brescia, M, Brinchmann, J, Burigana, C, Camera, S, Capobianco, V, Carbone, C, Carretero, J, Carvalho, CS, Castander, FJ, Castellano, M, Cavuoti, S, Cimatti, A, Clédassou, R, Congedo, G, Conversi, L, Copin, Y, Corcione, L, Coupon, J, Courtois, HM, Cropper, M, Da Silva, A, Duncan, CAJ, Dusini, S, Ealet, A, Farrens, S, Fosalba, P, Fotopoulou, S, Fourmanoit, N, Frailis, M, Fumana, M, Galeotta, S, Garilli, B, Gillard, W, Gillis, BR, Graciá-Carpio, J, Grupp, F, Hoekstra, H, Hormuth, F, Israel, H, Jahnke, K, Kermiche, S, Kilbinger, M, Kirkpatrick, CC, Kitching, T, Kohley, R, Kubik, B, Kunz, M, Kurki-Suonio, H, Laureijs, R, Ligori, S, Lilje, PB, Lloro, I, Maiorano, E, Mansutti, O, Marggraf, O, Martinet, N, Marulli, F, Massey, R, Mauri, N, Medinaceli, E, Mei, S, Mellier, Y, Metcalf, RB, Metge, JJ, Meylan, G, Moresco, M, Moscardini, L, Munari, E, Neissner, C, Niemi, SM, Nutma, T, Padilla, C, Paltani, S, Pasian, F, Paykari, P, Percival, WJ, Pettorino, V, Polenta, G, Poncet, M, Pozzetti, L, Raison, F, Renzi, A, Rhodes, J

We provide predictions of the yield of 7 < z < 9 quasars from the Euclid wide survey, updating the calculation presented in the Euclid Red Book in several ways. We account for revisions to the Euclid near-infrared filter wavelengths; we adopt steeper

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::11ad0d3907ee4a6b9b18550c366cbc18

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Correcting C $\small \text{IV}$-Based Virial Black Hole Masses

Autor: Coatman, L, Hewett, PC, Banerji, M, Richards, GT, Hennawi, JF, Prochaska, JX

The C $\small \text{IV}$λλ1498,1501 broad emission line is visible in optical spectra to redshifts exceeding $z$ ∼ 5. C $\small \text{IV}$ has long been known to exhibit significant displacements to the blue and these ‘blueshifts’ almost cert

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8d5424778b01d6e969894fc2f0b398c8
https://www.repository.cam.ac.uk/handle/1810/261989

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Eight new luminous z = 6 quasars discovered via SED model fitting of VISTA, WISE and Dark Energy Survey Year 1 observations

We present the discovery and spectroscopic confirmation with the ESO NTT and Gemini South telescopes of eight new 6.0 < z < 6.5 quasars with z$_{AB}$ < 21.0. These quasars were photometrically selected without any star-galaxy morphological criteria f

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e3a2e8d058639a9fc50204f8c9d07ae3
https://www.repository.cam.ac.uk/handle/1810/274500

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Akademický článek

Consistency in women's reports of sensitive behavior in an interview mode experiment, Sao Paulo, Brazil.

Autor: Mensch BS (AUTHOR), Hewett PC (AUTHOR), Jones HE (AUTHOR), Luppi CG (AUTHOR), Lippman SA (AUTHOR), Pinho AA (AUTHOR), Diaz J (AUTHOR)

Publikováno v: International Family Planning Perspectives. Dec2008, Vol. 34 Issue 4, p169-176. 8p.

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CIV emission-line properties and systematic trends in quasar black hole mass estimates

Autor: Coatman, L, Hewett, PC, Banerji, M, Richards, GT

Black-hole masses are crucial to understanding the physics of the connection between quasars and their host galaxies and measuring cosmic black hole-growth. At high redshift, z > 2.1, black hole masses are normally derived using the velocity-width of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bcb2ef8921d2c91850f9c703d2551996

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