Detection of 7Be II in the Small Magellanic Cloud

被引：8

作者：

Izzo, Luca ^{[1
]}

Molaro, Paolo ^{[2
,3
]}

Cescutti, Gabriele ^{[2
,3
,4
]}

Aydi, Elias ^{[5
]}

Selvelli, Pierluigi ^{[2
]}

Harvey, Eamonn ^{[6
]}

Agnello, Adriano ^{[1
]}

Bonifacio, Piercarlo ^{[7
]}

Della Valle, Massimo ^{[8
,9
]}

Guido, Ernesto ^{[10
]}

Hernanz, Margarita ^{[11
]}

机构：

[1] Univ Copenhagen, Niels Bohr Inst, DARK, Jagtvej 128, DK-2200 Copenhagen, Denmark

[2] Osserv Astron Trieste, INAF, Via Tiepolo 11, I-34143 Trieste, Italy

[3] Istitute Fundamental Phys Universe, IFPU, Via Beirut 2, I-34151 Trieste, Italy

[4] Ist Nazl Fis Nucl, Sez Trieste, Via A Valerio 2, I-34127 Trieste, Italy

[5] Michigan State Univ, Ctr Data Intens & Time Domain Astron, Dept Phys & Astron, E Lansing, MI 48824 USA

[6] Liverpool John Moores Univ, Astrophys Res Inst, IC2 Liverpool Sci Pk, Liverpool L3 5RF, Merseyside, England

[7] Univ PSL, Observ Paris, CNRS, GEPI, Pl Jules Janssen, F-92195 Meudon, France

[8] INAF Napoli, Capodimonte Astron Observ, Salita Moiariello 16, I-80131 Naples, Italy

[9] ICRANet, Piazza Repubbl 10, I-65122 Pescara, Italy

[10] Spaceflux Ltd, Telescope Live, Covent Garden, 71-75 Shelton St, London WC2H 9JQ, England

[11] Inst Space Sci ICE, CSIC & IEEC, Campus UAB,Cami Can Magrans S-N, E-08193 Cenlanyola Del Valles, Barcelona, Spain

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2022年 / 510卷 / 04期

关键词：

nuclear reactions; nucleosynthesis; abundances; stars:; individual:; ASSASN-19qv; ASASSN-20ni; (stars:) novae; Galaxy: abundances; Galaxy: evolution; CLASSICAL NOVAE; LOW-METALLICITY; LITHIUM PRODUCTION; EVOLUTION; ABUNDANCES; STARS; OUTBURST; THIN; POPULATIONS; ABSORPTION;

D O I：

10.1093/mnras/stab3761

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We analyse high-resolution spectra of two classical novae that exploded in the Small Magellanic Cloud (SMC). Be-7 II resonance transitions are detected in both ASASSN-19qv and ASASSN-20ni novae. This is the first detection outside the Galaxy and confirms that thermo-nuclear runaway reactions, leading to the Be-7 formation, are effective also in the low-metallicity regime, characteristic of the SMC. Derived yields are of N(Be-7 = Li-7)/N(H) = (5.3 +/- 0.2) x 10(-6) which are a factor 4 lower than the typical values of the Galaxy. Inspection of two historical novae in the Large Magellanic Cloud observed with IUE in 1991 and 1992 showed also the possible presence of Be-7 and similar yields. For an ejecta of M-H,M- ej = 10(-5) M-circle dot, the amount of Li-7 produced is of M-7(Li) = (3.7 +/- 0.6) x 10(-10) M-circle dot per nova event. Detailed chemical evolutionary model for the SMC shows that novae could have made an amount of lithium in the SMC corresponding to a fractional abundance of A(Li) approximate to 2.6. Therefore, it is argued that a comparison with the abundance of Li in the SMC, as measured by its interstellar medium, could effectively constrain the amount of the initial abundance of primordial Li, which is currently controversial.

引用

页码：5302 / 5314

页数：13

共 92 条

[1] Planck 2015 results XVII. Constraints on primordial non-Gaussianity [J].

Ade, P. A. R. ;

Aghanim, N. ;

Arnaud, M. ;

Arrojam, F. ;

Ashdown, M. ;

Aumont, J. ;

Baccigalupi, C. ;

Ballardini, M. ;

Banday, A. J. ;

Barreiro, R. B. ;

Bartolo, N. ;

Basak, S. ;

Battaner, E. ;

Benabed, K. ;

Benoit, A. ;

Benoit-Levy, A. ;

Bernard, J. -P. ;

Bersanelli, M. ;

Bielewicz, P. ;

Bock, J. J. ;

Bonaldi, A. ;

Bonavera, L. ;

Bond, J. R. ;

Borrill, J. ;

Bouchet, F. R. ;

Boulanger, F. ;

Bucher, M. ;

Burigana, C. ;

Butler, R. C. ;

Calabrese, E. ;

Cardoso, J. -F. ;

Catalano, A. ;

Challinor, A. ;

Chamballu, A. ;

Chiang, H. C. ;

Christensen, P. R. ;

Church, S. ;

Clements, D. L. ;

Colombi, S. ;

Colombo, L. P. L. ;

Combet, C. ;

Couchot, F. ;

Coulais, A. ;

Crill, B. P. ;

Curto, A. ;

Cuttaia, F. ;

Danese, L. ;

Davies, R. D. ;

Davis, R. J. ;

de Bernardis, P. .

ASTRONOMY & ASTROPHYSICS, 2016, 594

[2]

ANDREA J, 1994, ASTRON ASTROPHYS, V291, P869

[3]

[Anonymous], 2019, ARXIV191200844

[4]

Aydi E., 2019, ASTRON TEL, P1

[5]

Aydi E., 2018, ASTRON TELEGRAM, P1

[6] Direct evidence for shock-powered optical emission in a nova [J].

Aydi, Elias ;

Sokolovsky, Kirill V. . ;

Chomiuk, Laura ;

Steinberg, Elad ;

Li, Kwan Lok ;

Vurm, Indrek ;

Metzger, Brian D. ;

Strader, Jay ;

Mukai, Koji ;

Pejcha, Ondrej ;

Shen, Ken J. ;

Wade, Gregg A. ;

Kuschnig, Rainer ;

Moffat, Anthony F. J. ;

Pablo, Herbert ;

Pigulski, Andrzej ;

Popowicz, Adam ;

Weiss, Werner ;

Zwintz, Konstanze ;

Izzo, Luca ;

Pollard, Karen R. ;

Handler, Gerald ;

Ryder, Stuart D. ;

Filipovic, Miroslav D. ;

Alsaberi, Rami Z. E. ;

Manojlovic, Perica ;

de Oliveira, Raimundo Lopes ;

Walter, Frederick M. ;

Vallely, Patrick J. ;

Buckley, David A. H. ;

Brown, Michael J. I. ;

Harvey, Eamonn J. ;

Kawash, Adam ;

Kniazev, Alexei ;

Kochanek, Christopher S. ;

Linford, Justin ;

Mikolajewska, Joanna ;

Molaro, Paolo ;

Orio, Marina ;

Page, Kim L. ;

Shappee, Benjamin J. ;

Sokoloski, Jennifer L. .

NATURE ASTRONOMY, 2020, 4 (08) :776-780

[7]

Bode M. F., 2012, Classical Novae

[8] IUE SPACECRAFT AND INSTRUMENTATION [J].

BOGGESS, A ;

CARR, FA ;

EVANS, DC ;

FISCHEL, D ;

FREEMAN, HR ;

FUECHSEL, CF ;

KLINGLESMITH, DA ;

KRUEGER, VL ;

LONGANECKER, GW ;

MOORE, JV ;

PYLE, EJ ;

REBAR, F ;

SIZEMORE, KO ;

SPARKS, W ;

UNDERHILL, AB ;

VITAGLIANO, HD ;

WEST, DK ;

MACCHETTO, F ;

FITTON, B ;

BARKER, PJ ;

DUNFORD, E ;

GONDHALEKAR, PM ;

HALL, JE ;

HARRISON, VAW ;

OLIVER, MB ;

SANDFORD, MCW ;

VAUGHAN, PA ;

WARD, AK ;

ANDERSON, BE ;

BOKSENBERG, A ;

COLEMAN, CI ;

SNIJDERS, MAJ ;

WILSON, R .

NATURE, 1978, 275 (5679) :372-377

[9]

Bohlsen T.C., 2019, ASTRON TELEGRAM, P1

[10] TOPoS II. On the bimodality of carbon abundance in CEMP stars Implications on the early chemical evolution of galaxies [J].

Bonifacio, P. ;

Caffau, E. ;

Spite, M. ;

Limongi, M. ;

Chieffi, A. ;

Klessen, R. S. ;

Francois, P. ;

Molaro, P. ;

Ludwig, H. -G. ;

Zaggia, S. ;

Spite, F. ;

Plez, B. ;

Cayrel, R. ;

Christlieb, N. ;

Clark, P. C. ;

Glover, S. C. O. ;

Hammer, F. ;

Koch, A. ;

Monaco, L. ;

Sbordone, L. ;

Steffen, M. .

ASTRONOMY & ASTROPHYSICS, 2015, 579

← 1 2 3 4 5 6 7 8 9 10 →