Accretion and Host-Galaxy Properties of 14 New 'Changing-Look' Active Galactic Nuclei Identified from the SDSS-V Survey

Autor: Jing Wang, Dawei Xu, Jianying Bai, T. G. Brink, Cheng Gao, Weikang Zheng, Alex. V. Filippenko, Jianyan Wei

Publikováno v: Research in Astronomy and Astrophysics.

The widely accepted active galactic nucleus (AGN) paradigm has been recently challenged by the discovery of the so-called ``changing-look'' (CL) phenomenon characterized by spectral-type transitions. By comparing the SDSS-V and SDSS DR16 spectroscopi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ab1b0bb5d259710a88270d7e6c0f9ea5
https://doi.org/10.1088/1674-4527/ac995c

First-year Sloan Digital Sky Survey-II supernova results:Hubble diagram and cosmological parameters

Autor: Ulrich Hopp, Tamara M. Davis, Kaike Pan, Jon A. Holtzman, Adam G. Riess, Kurt van der Heyden, Mamoru Doi, Alex V. Filippenko, Benjamin Dilday, Chen Zheng, Jennifer L. Marshall, Kohki Konishi, Russet McMillan, Mathew Smith, Ed Elson, Ralf Bender, Darren L. DePoy, Naohiro Takanashi, Saurabh Jha, Jesper Sollerman, Naoki Yasuda, Bruce A. Bassett, D. Cinabro, Michael Richmond, Robert C. Nichol, Ryan J. Foley, Masao Sako, Yutaka Ihara, Kouichi Tokita, Hubert Lampeitl, Donald P. Schneider, Roger W. Romani, Tomoki Morokuma, Andrew C. Becker, Donald G. York, Wolfram Kollatschny, J. L. Prieto, Jake Vanderplas, Peter M. Garnavich, Edvard M\\'ortsell, John C Wheeler, Richard Kessler, William Ketzeback, Joshua A. Frieman, Gajus Miknaitis, John Marriner

Publikováno v: Kessler, R, Becker, A C, Cinabro, D, Vanderplas, J T, Frieman, J A, Marriner, J P, Davis, T M, Dilday, B, Holtzman, J A, Jha, S W, Lampeitl, H, Sako, M, Smith, M, Zheng, C, Nichol, R C, Bassett, B A, Bender, R, Depoy, D L, Doi, M, Elson, E, Filippenko, A V, Foley, R J, Garnavich, P M, Hopp, U, Ihara, Y, Ketzeback, W, Kollatschny, W, Konishi, K, Marshall, J L, McMillan, R J, Miknaitis, G, Morokuma, T, Mortsell, E, Pan, K, Prieto, J L, Richmond, M W, Riess, A G, Romani, R W, Schneider, D P, Sollerman, J, Takanashi, N, Tokita, K, van der Heyden, K J, Wheeler, J C, Yasuda, N & York, D G 2009, ' First-year Sloan Digital Sky Survey-II supernova results : Hubble diagram and cosmological parameters ', The Astrophysical Journal Supplement Series, vol. 185, no. 1, pp. 32-84 . https://doi.org/10.1088/0067-0049/185/1/32

We present measurements of the Hubble diagram for 103 Type Ia supernovae (SNe) with redshifts 0.04 < z < 0.42, discovered during the first season (Fall 2005) of the Sloan Digital Sky Survey-II (SDSS-II) Supernova Survey. These data fill in the redshi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7e345cd4c8c57fb8f5f5c5fd94096a92
https://researchportal.port.ac.uk/portal/en/publications/firstyear-sloan-digital-sky-surveyii-supernova-results(33e9db04-38e2-4ef8-bd21-a111125b6d71).html

Late-time Spectral Observations of Type IIP Supernovae

Autor: Alex V. Filippenko, J. Craig Wheeler, Jeffrey M. Silverman, Stephanie Pickett

Publikováno v: Proceedings of the International Astronomical Union. 11:472-472

We are analysing late-time (older than about 150 d past explosion) optical spectra of Type II-Plateau (IIP) supernovae (SNe), which are H-rich SNe that come from red supergiant (RSG) progenitors. The dataset includes nearly 100 spectra of about 40 ob

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8b147eda82324c7399d591ca1bb1ccfb
https://doi.org/10.1017/s1743921316005895