Nitrogen abundance in the Blue Compact Dwarf galaxies from SDSS

被引：0

作者：

Vovk, K. B. ^{[1
]}

机构：

[1] NAS Ukraine, Main Astron Observ, Akad Zabolotnoho Str 27, UA-03680 Kiev, Ukraine

来源：

ADVANCES IN ASTRONOMY AND SPACE PHYSICS | 2015年 / 5卷 / 01期

关键词：

galaxies:ISM; galaxies: starburst; galaxies: abundances; galaxies: individual: Wolf-Rayet;

D O I：

10.17721/2227-1481.5.39-42

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We examined all of the galaxies in the Sloan Digital Sky Survey (SDSS) Data Release 7 (DR7) to select those with a detected [O III] lambda 4363 emission line, which allows to derive electron temperatures in H it regions and element abundances by the direct method. We selected two sub-samples of galaxies: one with detected WR features in their spectra, and the other with the nebular He II lambda 4686 emission line. We confirm the increase of the N/O abundance ratio with decrease of the equivalent width EW(H beta) of the H beta emission line. This result is explained by gradual nitrogen enrichment of the interstellar medium by ejecta from massive stars in the most recent starburst episode.

引用

页码：39 / +

页数：10

共 24 条

[1] THE SEVENTH DATA RELEASE OF THE SLOAN DIGITAL SKY SURVEY [J].

Abazajian, Kevork N. ;

Adelman-McCarthy, Jennifer K. ;

Agueros, Marcel A. ;

Allam, Sahar S. ;

Prieto, Carlos Allende ;

An, Deokkeun ;

Anderson, Kurt S. J. ;

Anderson, Scott F. ;

Annis, James ;

Bahcall, Neta A. ;

Bailer-Jones, C. A. L. ;

Barentine, J. C. ;

Bassett, Bruce A. ;

Becker, Andrew C. ;

Beers, Timothy C. ;

Bell, Eric F. ;

Belokurov, Vasily ;

Berlind, Andreas A. ;

Berman, Eileen F. ;

Bernardi, Mariangela ;

Bickerton, Steven J. ;

Bizyaev, Dmitry ;

Blakeslee, John P. ;

Blanton, Michael R. ;

Bochanski, John J. ;

Boroski, William N. ;

Brewington, Howard J. ;

Brinchmann, Jarle ;

Brinkmann, J. ;

Brunner, Robert J. ;

Budavari, Tamas ;

Carey, Larry N. ;

Carliles, Samuel ;

Carr, Michael A. ;

Castander, Francisco J. ;

Cinabro, David ;

Connolly, A. J. ;

Csabai, Istvan ;

Cunha, Carlos E. ;

Czarapata, Paul C. ;

Davenport, James R. A. ;

de Haas, Ernst ;

Dilday, Ben ;

Doi, Mamoru ;

Eisenstein, Daniel J. ;

Evans, Michael L. ;

Evans, N. W. ;

Fan, Xiaohui ;

Friedman, Scott D. ;

Frieman, Joshua A. .

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2009, 182 (02) :543-558

[2] Study of the nature of He II nebular emission in the spectra of low-metallicity H II regions from the Sloan Digital Sky Survey [J].

Agienko, K. B. .

KINEMATICS AND PHYSICS OF CELESTIAL BODIES, 2013, 29 (05) :221-227

[3] Sample of Wolf-Rayet galaxies from the SLOAN digital sky survey [J].

Agienko, K. B. ;

Guseva, N. G. ;

Izotov, Yu I. .

KINEMATICS AND PHYSICS OF CELESTIAL BODIES, 2013, 29 (03) :131-140

[4] CLASSIFICATION PARAMETERS FOR THE EMISSION-LINE SPECTRA OF EXTRA-GALACTIC OBJECTS [J].

BALDWIN, JA ;

PHILLIPS, MM .

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, 1981, 93 (551) :5-19

[5] Galaxies with Wolf-Rayet signatures in the low-redshift Universe - A survey using the Sloan Digital Sky Survey [J].

Brinchmann, J. ;

Kunth, D. ;

Durret, F. .

ASTRONOMY & ASTROPHYSICS, 2008, 485 (03) :657-677

[6] ENHANCED NITROGEN IN MORPHOLOGICALLY DISTURBED BLUE COMPACT GALAXIES AT 0.20 < z < 0.35: PROBING GALAXY MERGING FEATURES [J].

Chung, Jiwon ;

Rey, Soo-Chang ;

Sung, Eon-Chang ;

Yeom, Bum-Suk ;

Humphrey, Andrew ;

Yi, Wonhyeong ;

Kyeong, Jaemann .

ASTROPHYSICAL JOURNAL LETTERS, 2013, 767 (01)

[7] ELECTRON-TEMPERATURE VARIATIONS AND THE MEASUREMENT OF NEBULAR ABUNDANCES [J].

GARNETT, DR .

ASTRONOMICAL JOURNAL, 1992, 103 (04) :1330-1337

[8] A spectroscopic study of a large sample of Wolf-Rayet galaxies [J].

Guseva, NG ;

Izotov, YI ;

Thuan, TX .

ASTROPHYSICAL JOURNAL, 2000, 531 (02) :776-803

[9] The chemical composition of metal-poor emission-line galaxies in the Data Release 3 of the Sloan Digital Sky Survey [J].

Izotov, YI ;

Stasinska, G ;

Meynet, G ;

Guseva, NG ;

Thuan, TX .

ASTRONOMY & ASTROPHYSICS, 2006, 448 (03) :955-970

[10] Deep Hubble Space Telescope ACS observations of I Zw 18:: A young galaxy in formation [J].

Izotov, YI ;

Thuan, TX .

ASTROPHYSICAL JOURNAL, 2004, 616 (02) :768-782

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