The S-PLUS Ultra-Short Survey: First data release

Autor(es):Mostrar menos -

Perottoni, Helio D. ; Placco, Vinicius M. ; Almeida-Fernandes, Felipe ; Herpich, Fabio R. ; Rossi, Silvia ; Beers, Timothy C. ; Smiljanic, Rodolfo ; Amarante, Joao A. S. ; Limberg, Guilherme ; Werle, Ariel ; Rocha-Pinto, Helio J. ; Beraldo e Silva, Leandro ; Daflon, Simone ; Alvarez-Candal, Alvaro ; Schwarz, Gustavo B. Oliveira ; Schoenell, William ; Ribeiro, Tiago ; Kanaan, Antonio

• Tipo de documento: Artigo Científico
• Fonte: Astronomy & Astrophysics; v. 691, p. 12-pg., 2024-11-05.

Resumo

Context. This paper presents the first public data release of the S-PLUS Ultra-Short Survey (USS), a photometric survey with short exposure times, covering approximately 9300 deg(2) of the Southern sky. The USS utilizes the Javalambre 12-band magnitude system, including narrow, medium, and broad-band filters targeting prominent stellar spectral features. The primary objective of the USS is to identify bright, extremely metal-poor (EMP; [Fe/H] <= -3) and ultra-metal-poor (UMP; [Fe/H] <= -4) stars for further analysis using medium- and high-resolution spectroscopy. Aims. This paper provides an overview of the survey observations, calibration method, data quality, and data products. Additionally, it presents the selection of EMP and UMP candidates. Methods. The data from the USS were reduced and calibrated using the same methods as presented in the S-PLUS DR2. An additional step was introduced, accounting for the offset between the observed magnitudes off the USS and the predicted magnitudes from the very low-resolution Gaia XP spectra. Results. This first release contains data for 163 observed fields totaling similar to 324 deg(2) along the Celestial Equator. The magnitudes obtained from the USS are well-calibrated, showing a difference of similar to 15 mmag compared to the predicted magnitudes by the GaiaXPy toolkit. By combining colors and magnitudes, 140 candidates for EMP or UMP have been identified for follow-up studies. Conclusions. The S-PLUS USS DR1 is an important milestone in the search for bright metal-poor stars, with magnitudes in the range 10 < r <= 14. The USS is an ongoing survey; in the near future, it will provide many more bright metal-poor candidate stars for spectroscopic follow-up. (AU)

• Processo FAPESP: 18/21250-9 - Identificação de estrelas brilhantes pobres em metais a partir de fotometria Multi-Banda e acompanhamento espectroscópico
• Beneficiário: Hélio Dotto Perottoni
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 20/15245-2 - Espectrógrafo multi-objeto (MOSAIC) para o extremely large telescope: espectroscopia de populações estelares na via láctea e em galáxias
• Beneficiário: Beatriz Leonor Silveira Barbuy
• Modalidade de apoio: Auxílio à Pesquisa - Projetos Especiais
• Processo FAPESP: 21/10429-0 - A estrutura quimiodinâmica do halo galáctico
• Beneficiário: Guilherme Limberg
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto
• Processo FAPESP: 18/20977-2 - Identificação de estrelas gigantes para mapeamento da Galáxia no levantamento S-PLUS
• Beneficiário: Felipe de Almeida Fernandes
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 21/11345-5 - Busca por asteroides no S-PLUS usando o software THOR
• Beneficiário: Fábio Rafael Herpich
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado
• Processo FAPESP: 15/50374-0 - Mosaic: the multi-object spectrograph for the ESO Extremely Large Telescope
• Beneficiário: Silvia Cristina Fernandes Rossi
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 18/21661-9 - Catalogação de Fontes Variáveis e Ciência Tipo IFU em Levantamentos Fotométricos Multibanda.
• Beneficiário: Fábio Rafael Herpich
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado