Files in this item
Space telescope and optical reverberation mapping project. I. Ultraviolet observations of the Seyfert 1 galaxy NGC 5548 with the cosmic origins spectrograph on Hubble Space Telescope
Item metadata
dc.contributor.author | De Rosa, G. | |
dc.contributor.author | Peterson, B.M. | |
dc.contributor.author | Ely, J. | |
dc.contributor.author | Kriss, G.A. | |
dc.contributor.author | Crenshaw, D.M. | |
dc.contributor.author | Horne, K. | |
dc.contributor.author | Korista, K.T. | |
dc.contributor.author | Netzer, H. | |
dc.contributor.author | Pogge, R.W. | |
dc.contributor.author | Arévalo, P. | |
dc.contributor.author | Barth, A.J. | |
dc.contributor.author | Bentz, M.C. | |
dc.contributor.author | Brandt, W.N. | |
dc.contributor.author | Breeveld, A.A. | |
dc.contributor.author | Brewer, B.J. | |
dc.contributor.author | Dalla Bontá, E. | |
dc.contributor.author | De Lorenzo-Caceres Rodriguez, Adriana | |
dc.contributor.author | Denney, K.D. | |
dc.contributor.author | Dietrich, M. | |
dc.contributor.author | Edelson, R. | |
dc.contributor.author | Evans, P.A. | |
dc.contributor.author | Fausnaugh, M.M. | |
dc.contributor.author | Gehrels, N. | |
dc.contributor.author | Gelbord, J.M. | |
dc.contributor.author | Goad, M.R. | |
dc.contributor.author | Grier, C.J. | |
dc.contributor.author | Grupe, D. | |
dc.contributor.author | Hall, P.B. | |
dc.contributor.author | Kaastra, J. | |
dc.contributor.author | Kelly, B.C. | |
dc.contributor.author | Kennea, J.A. | |
dc.contributor.author | Kochanek, C.S. | |
dc.contributor.author | Lira, P. | |
dc.contributor.author | Mathur, S. | |
dc.contributor.author | McHardy, I.M. | |
dc.contributor.author | Nousek, J.A. | |
dc.contributor.author | Pancoast, A. | |
dc.contributor.author | Papadakis, I. | |
dc.contributor.author | Pei, L. | |
dc.contributor.author | Schimoia, J.S. | |
dc.contributor.author | Siegel, M. | |
dc.contributor.author | Starkey, D. | |
dc.contributor.author | Treu, T. | |
dc.contributor.author | Uttley, P. | |
dc.contributor.author | Vaughan, S. | |
dc.contributor.author | Vestergaard, M. | |
dc.contributor.author | Villforth, C. | |
dc.contributor.author | Yan, H. | |
dc.contributor.author | Young, S. | |
dc.contributor.author | Zu, Y. | |
dc.date.accessioned | 2015-07-24T12:10:04Z | |
dc.date.available | 2015-07-24T12:10:04Z | |
dc.date.issued | 2015-06-12 | |
dc.identifier | 204829370 | |
dc.identifier | 80510e90-9af8-4b3d-b552-00ce0f49fb60 | |
dc.identifier | 84935009461 | |
dc.identifier | 000356810300128 | |
dc.identifier.citation | De Rosa , G , Peterson , B M , Ely , J , Kriss , G A , Crenshaw , D M , Horne , K , Korista , K T , Netzer , H , Pogge , R W , Arévalo , P , Barth , A J , Bentz , M C , Brandt , W N , Breeveld , A A , Brewer , B J , Dalla Bontá , E , De Lorenzo-Caceres Rodriguez , A , Denney , K D , Dietrich , M , Edelson , R , Evans , P A , Fausnaugh , M M , Gehrels , N , Gelbord , J M , Goad , M R , Grier , C J , Grupe , D , Hall , P B , Kaastra , J , Kelly , B C , Kennea , J A , Kochanek , C S , Lira , P , Mathur , S , McHardy , I M , Nousek , J A , Pancoast , A , Papadakis , I , Pei , L , Schimoia , J S , Siegel , M , Starkey , D , Treu , T , Uttley , P , Vaughan , S , Vestergaard , M , Villforth , C , Yan , H , Young , S & Zu , Y 2015 , ' Space telescope and optical reverberation mapping project. I. Ultraviolet observations of the Seyfert 1 galaxy NGC 5548 with the cosmic origins spectrograph on Hubble Space Telescope ' , Astrophysical Journal , vol. 806 , no. 1 . https://doi.org/10.1088/0004-637X/806/1/128 | en |
dc.identifier.issn | 0004-637X | |
dc.identifier.uri | https://hdl.handle.net/10023/7027 | |
dc.description.abstract | We describe the first results from a six-month long reverberation-mapping experiment in the ultraviolet based on 171 observations of the Seyfert 1 galaxy NGC 5548 with the Cosmic Origins Spectrograph on the Hubble Space Telescope. Significant correlated variability is found in the continuum and broad emission lines, with amplitudes ranging from ∼30% to a factor of two in the emission lines and a factor of three in the continuum. The variations of all the strong emission lines lag behind those of the continuum, with He ii λ1640 lagging behind the continuum by ∼2.5 days and Ly λ1215, C iv λ1550, and Si iv λ1400 lagging by ∼5-6 days. The relationship between the continuum and emission lines is complex. In particular, during the second half of the campaign, all emission-line lags increased by a factor of 1.3-2 and differences appear in the detailed structure of the continuum and emission-line light curves. Velocity-resolved cross-correlation analysis shows coherent structure in lag versus line of sight velocity for the emission lines; the high-velocity wings of C iv respond to continuum variations more rapidly than the line core, probably indicating higher velocity broad-line region clouds at smaller distances from the central engine. The velocity-dependent response of Lyα, however, is more complex and will require further analysis. | |
dc.format.extent | 976699 | |
dc.language.iso | eng | |
dc.relation.ispartof | Astrophysical Journal | en |
dc.subject | Galaxies: active | en |
dc.subject | Galaxies: individual (NGC 5548 | en |
dc.subject | Galaxies: nuclei | en |
dc.subject | Galaxies: Seyfert | en |
dc.subject | QB Astronomy | en |
dc.subject | QC Physics | en |
dc.subject | NDAS | en |
dc.subject | BDC | en |
dc.subject.lcc | QB | en |
dc.subject.lcc | QC | en |
dc.title | Space telescope and optical reverberation mapping project. I. Ultraviolet observations of the Seyfert 1 galaxy NGC 5548 with the cosmic origins spectrograph on Hubble Space Telescope | en |
dc.type | Journal article | en |
dc.contributor.sponsor | Science & Technology Facilities Council | en |
dc.contributor.sponsor | Science & Technology Facilities Council | en |
dc.contributor.sponsor | Science & Technology Facilities Council | en |
dc.contributor.institution | University of St Andrews. School of Physics and Astronomy | en |
dc.identifier.doi | 10.1088/0004-637X/806/1/128 | |
dc.description.status | Peer reviewed | en |
dc.identifier.grantnumber | ST/J001651/1 | en |
dc.identifier.grantnumber | ST/K001515/1 | en |
dc.identifier.grantnumber | ST/M001296/1 | en |
This item appears in the following Collection(s)
Items in the St Andrews Research Repository are protected by copyright, with all rights reserved, unless otherwise indicated.