CAPOS: the bulge Cluster APOgee Survey IV elemental abundances of the bulge globular cluster NGC 6558

被引:4
作者
Gonzalez-Diaz, Danilo [1 ,2 ]
Fernandez-Trincado, Jose G. [1 ]
Villanova, Sandro [3 ]
Geisler, Doug [3 ,4 ,5 ]
Barbuy, Beatriz [6 ]
Minniti, Dante [7 ,8 ,9 ]
Beers, Timothy C. [10 ,11 ]
Bidin, Christian Moni [1 ]
Mauro, Francesco [1 ]
Munoz, Cesar [4 ,5 ]
Tang, Baitian [12 ]
Soto, Mario [13 ]
Monachesi, Antonela [4 ,5 ]
Lane, Richard R. [14 ]
Frelijj, Heinz [1 ]
机构
[1] Univ Catolica Norte, Inst Astron, Av Angamos 0610, Antofagasta, Chile
[2] Univ Antioquia, Inst Fis, Calle 70 52-21, Medellin, Colombia
[3] Univ Concepcion, Dept Astron, Casilla 160-C, Concepcion, Chile
[4] Univ La Serena, Inst Multidisciplinario Invest & Postgrad, Raul Bitran 1305, La Serena, Chile
[5] Univ La Serena, Fac Ciencias, Dept Astron, Av Juan Cisternas 1200, La Serena, Chile
[6] Univ Sao Paulo, IAG, Rua Matao 1226,Cidade Univ, BR-05508900 Sao Paulo, Brazil
[7] Univ Andres Bello, Inst Astrophys, Fac Ciencias Exactas, Av Fernandez Concha 700, Santiago, Chile
[8] Vatican Observ, I-00120 Vatican City, Vatican
[9] Univ Fed Santa Catarina, Dept Fis, BR-88040900 Florianopolis, Brazil
[10] Univ Notre Dame, Dept Phys & Astron, Notre Dame, IN 46556 USA
[11] Univ Notre Dame, JINA Ctr Evolut Elements, Notre Dame, IN 46556 USA
[12] Sun Yat Sen Univ, Sch Phys & Astron, Zhuhai 519082, Peoples R China
[13] Univ Atacama, Inst Astron & Ciencias Planetarias, Copayapu 485, Copiapo, Chile
[14] Univ Bernardo OHiggins, Ctr Invest Astron, Ave Viel 1497, Santiago, Chile
关键词
Techniques: spectroscopic; stars: abundances; stars: chemically peculiar; galaxy: globular clusters: individual: NGC 6558; FINAL TARGETING STRATEGY; ROTATING MASSIVE STARS; DIGITAL SKY SURVEY; METAL-POOR STARS; DATA RELEASES 13; MILKY-WAY BULGE; N-RICH STARS; R-PROCESS; S-PROCESS; CHEMICAL ABUNDANCES;
D O I
10.1093/mnras/stad3178
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
This study presents the results concerning six red giant stars members of the globular cluster NGC 6558. Our analysis utilized high-resolution near-infrared spectra obtained through the CAPOS initiative (the APOgee Surv e y of Clusters in the Galactic Bulge), which focuses on surv e ying clusters within the Galactic Bulge, as a component of the Apache Point Observatory Galactic Evolution Experiment II surv e y (APOGEE-2). We employ the Brussels Automatic Code for Characterizing High accUracy Spectra ( BACCHUS ) code to provide line-by-line elemental-abundances for Fe-peak (Fe, Ni), alpha-(O, Mg, Si, Ca, Ti), light-(C, N), odd-Z (Al), and the s-process element (Ce) for the four stars with high-signal-to-noise ratios. This is the first reliable measure of the CNO abundances for NGC 6558. Our analysis yields a mean metallicity for NGC 6558 of ([Fe/H]) = -1.15 +/- 0.08, with no evidence for a metallicity spread. We find a Solar Ni abundance, ([Ni/Fe]) similar to + 0.01, and a moderate enhancement of alpha-elements, ranging between + 0.16 and < + 0.42, and a slight enhancement of the s-process element ([Ce/Fe]) similar to + 0.19. We also found low levels of ([Al/Fe]) similar to + 0.09, but with a strong enrichment of nitrogen, [N/Fe] > + 0.99, along with a low level of carbon, [C/Fe] < -0.12. This behaviour of Nitrogen-Carbon is a typical chemical signature for the presence of multiple stellar populations in virtually all GCs; this is the first time that it is reported in NGC 6558. We also observed a remarkable consistency in the behaviour of all the chemical species compared to the other CAPOS bulge GCs of the same metallicity.
引用
收藏
页码:6274 / 6283
页数:10
相关论文
共 90 条
[1]   The Seventeenth Data Release of the Sloan Digital Sky Surveys: Complete Release of MaNGA, MaStar, and APOGEE-2 Data [J].
Abdurro'uf ;
Accetta, Katherine ;
Aerts, Conny ;
Aguirre, Victor Silva ;
Ahumada, Romina ;
Ajgaonkar, Nikhil ;
Ak, N. Filiz ;
Alam, Shadab ;
Prieto, Carlos Allende ;
Almeida, Andres ;
Anders, Friedrich ;
Anderson, Scott F. ;
Andrews, Brett H. ;
Anguiano, Borja ;
Aquino-Ortiz, Erik ;
Aragon-Salamanca, Alfonso ;
Argudo-Fernandez, Maria ;
Ata, Metin ;
Aubert, Marie ;
Avila-Reese, Vladimir ;
Badenes, Carles ;
Barba, Rodolfo H. ;
Barger, Kat ;
Barrera-Ballesteros, Jorge K. ;
Beaton, Rachael L. ;
Beers, Timothy C. ;
Belfiore, Francesco ;
Bender, Chad F. ;
Bernardi, Mariangela ;
Bershady, Matthew A. ;
Beutler, Florian ;
Bidin, Christian Moni ;
Bird, Jonathan C. ;
Bizyaev, Dmitry ;
Blanc, Guillermo A. ;
Blanton, Michael R. ;
Boardman, Nicholas Fraser ;
Bolton, Adam S. ;
Boquien, Mederic ;
Borissova, Jura ;
Bovy, Jo ;
Brandt, W. N. ;
Brown, Jordan ;
Brownstein, Joel R. ;
Brusa, Marcella ;
Buchner, Johannes ;
Bundy, Kevin ;
Burchett, Joseph N. ;
Bureau, Martin ;
Burgasser, Adam .
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2022, 259 (02)
[2]   The 16th Data Release of the Sloan Digital Sky Surveys: First Release from the APOGEE-2 Southern Survey and Full Release of eBOSS Spectra [J].
Ahumada, Romina ;
Allende Prieto, Carlos ;
Almeida, Andres ;
Anders, Friedrich ;
Anderson, Scott F. ;
Andrews, Brett H. ;
Anguiano, Borja ;
Arcodia, Riccardo ;
Armengaud, Eric ;
Aubert, Marie ;
Avila, Santiago ;
Avila-Reese, Vladimir ;
Badenes, Carles ;
Balland, Christophe ;
Barger, Kat ;
Barrera-Ballesteros, Jorge K. ;
Basu, Sarbani ;
Bautista, Julian ;
Beaton, Rachael L. ;
Beers, Timothy C. ;
Benavides, B. Izamar T. ;
Bender, Chad F. ;
Bernardi, Mariangela ;
Bershady, Matthew ;
Beutler, Florian ;
Bidin, Christian Moni ;
Bird, Jonathan ;
Bizyaev, Dmitry ;
Blanc, Guillermo A. ;
Blanton, Michael R. ;
Boquien, Mederic ;
Borissova, Jura ;
Bovy, Jo ;
Brandt, W. N. ;
Brinkmann, Jonathan ;
Brownstein, Joel R. ;
Bundy, Kevin ;
Bureau, Martin ;
Burgasser, Adam ;
Burtin, Etienne ;
Cano-Diaz, Mariana ;
Capasso, Raffaella ;
Cappellari, Michele ;
Carrera, Ricardo ;
Chabanier, Solene ;
Chaplin, William ;
Chapman, Michael ;
Cherinka, Brian ;
Chiappini, Cristina ;
Choi, Peter Doohyun .
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2020, 249 (01)
[3]  
Alvarez R, 1998, ASTRON ASTROPHYS, V330, P1109
[4]  
Asplund M, 2005, ASTR SOC P, V336, P25
[5]   NGC 6558:: A blue horizontal branch moderately metal-poor globular cluster in the bulge [J].
Barbuy, B. ;
Zoccali, M. ;
Ortolani, S. ;
Minniti, D. ;
Hill, V. ;
Renzini, A. ;
Bica, E. ;
Gomez, A. .
ASTRONOMICAL JOURNAL, 2007, 134 (04) :1613-1625
[6]   High-resolution abundance analysis of four red giants in the globular cluster NGC 6558 [J].
Barbuy, B. ;
Muniz, L. ;
Ortolani, S. ;
Ernandes, H. ;
Dias, B. ;
Saviane, I. ;
Kerber, L. ;
Bica, E. ;
Perez-Villegas, A. ;
Rossi, L. ;
Held, E. V. .
ASTRONOMY & ASTROPHYSICS, 2018, 619
[7]   High-resolution abundance analysis of red giants in the globular cluster NGC 6522 [J].
Barbuy, B. ;
Chiappini, C. ;
Cantelli, E. ;
Depagne, E. ;
Pignatari, M. ;
Hirschi, R. ;
Cescutti, G. ;
Ortolani, S. ;
Hill, V. ;
Zoccali, M. ;
Minniti, D. ;
Trevisan, M. ;
Bica, E. ;
Gomez, A. .
ASTRONOMY & ASTROPHYSICS, 2014, 570
[8]   VLT-FLAMES analysis of 8 giants in the bulge metal-poor globular cluster NGC 6522: oldest cluster in the Galaxy? Analysis of 8 giants in NGC 6522 [J].
Barbuy, B. ;
Zoccali, M. ;
Ortolani, S. ;
Hill, V. ;
Minniti, D. ;
Bica, E. ;
Renzini, A. ;
Gomez, A. .
ASTRONOMY & ASTROPHYSICS, 2009, 507 (01) :405-U533
[9]   Chemodynamical History of the Galactic Bulge [J].
Barbuy, Beatriz ;
Chiappini, Cristina ;
Gerhard, Ortwin .
ANNUAL REVIEW OF ASTRONOMY AND ASTROPHYSICS, VOL 56, 2018, 56 :223-276
[10]   Accurate distances to Galactic globular clusters through a combination of Gaia EDR3, HST, and literature data [J].
Baumgardt, H. ;
Vasiliev, E. .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2021, 505 (04) :5957-5977