Busca avançada
Ano de início
Entree
(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Photometric Type Ia supernova surveys in narrow-band filters

Texto completo
Autor(es):
Mostrar menos -
Xavier, Henrique S. [1, 2] ; Raul Abramo, L. [1] ; Sako, Masao [2] ; Benitez, Narciso [3] ; Calvao, Mauricio O. [4] ; Ederoclite, Alessandro [5] ; Marin-Franch, Antonio [5] ; Molino, Alberto [3] ; Reis, Ribamar R. R. [4] ; Siffert, Beatriz B. [4] ; Sodre, Jr., Laerte [6]
Número total de Autores: 11
Afiliação do(s) autor(es):
[1] Univ Sao Paulo, Inst Fis, BR-05508090 Sao Paulo - Brazil
[2] Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 - USA
[3] Inst Astrofis Andalucia CSIC, E-18008 Granada - Spain
[4] Univ Fed Rio de Janeiro, Inst Fis, BR-21941972 Rio De Janeiro, RJ - Brazil
[5] CEFCA, E-44001 Teruel - Spain
[6] Univ Sao Paulo, Inst Astron Geofis & Ciencias Atmosfer, BR-05508090 Sao Paulo - Brazil
Número total de Afiliações: 6
Tipo de documento: Artigo Científico
Fonte: Monthly Notices of the Royal Astronomical Society; v. 444, n. 3, p. 2313-2332, NOV 1 2014.
Citações Web of Science: 2
Resumo

We study the characteristics of a narrow-band Type Ia supernova (SN) survey through simulations based on the upcoming Javalambre Physics of the accelerating Universe Astrophysical Survey. This unique survey has the capabilities of obtaining distances, redshifts and the SNtype from a single experiment thereby circumventing the challenges faced by the resource-intensive spectroscopic follow-up observations. We analyse the flux measurements signal-to-noise ratio and bias, the SN typing performance, the ability to recover light-curve parameters given by the SALT2 model, the photometric redshift precision from Type Ia SN light curves and the effects of systematic errors on the data. We show that such a survey is not only feasible but may yield large Type Ia SN samples (up to 250 SNe at z < 0.5 per month of search) with low core-collapse contamination (similar to 1.5 per cent), good precision on the SALT2 parameters (average sigma(mB) = 0.063, sigma(x1) = 0.47 and sigma(c) = 0.040) and on the distance modulus (average sigma(mu) = 0.16, assuming an intrinsic scatter sigma(int) = 0.14), with identified systematic uncertainties sigma(sys) less than or similar to 0.10 sigma(stat). Moreover, the filters are narrow enough to detect most spectral features and obtain excellent photometric redshift precision of sigma(z) = 0.005, apart from similar to 2 per cent of outliers. We also present a few strategies for optimizing the survey's outcome. Together with the detailed host galaxy information, narrow-band surveys can be very valuable for the study of SN rates, spectral feature relations, intrinsic colour variations and correlations between SN and host galaxy properties, all of which are important information for SN cosmological applications. (AU)

Processo FAPESP: 09/54006-4 - Um cluster de computadores para o Departamento de Astronomia do IAG-USP e para o Núcleo de Astrofísica da UNICSUL
Beneficiário:Elisabete Maria de Gouveia Dal Pino
Linha de fomento: Auxílio à Pesquisa - Programa Equipamentos Multiusuários
Processo FAPESP: 09/54162-6 - Pau-Brasil: aquisição de detectores de CCD para a câmera CCD panorâmica da pesquisa Javalambre - física do universo em aceleração
Beneficiário:Laerte Sodré Junior
Linha de fomento: Auxílio à Pesquisa - Programa Equipamentos Multiusuários