메뉴 건너뛰기




Volumn 2010, Issue 5, 2010, Pages

A new approach to systematic uncertainties and self-consistency in helium abundance determinations

Author keywords

Big bang nucleosynthesis; Dwarfs galaxies

Indexed keywords


EID: 77952814489     PISSN: 14757516     EISSN: 14757516     Source Type: Journal    
DOI: 10.1088/1475-7516/2010/05/003     Document Type: Article
Times cited : (141)

References (69)
  • 2
    • 0041908216 scopus 로고    scopus 로고
    • Primordial nucleosynthesis: Theory and observations
    • K.A. Olive, G. Steigman and T.P. Walker, 2000 Primordial nucleosynthesis: theory and observations, Phys. Rept. 333 389 [astro-ph/9905320]
    • (2000) Phys. Rept. , vol.333 , pp. 389
    • Olive, K.A.1    Steigman, G.2    Walker, T.P.3
  • 3
    • 48549094165 scopus 로고    scopus 로고
    • Review of particle physics
    • Particle Data Group collaboration
    • Particle Data Group collaboration, C. Amsler et al., 2008 Review of particle physics, Phys. Lett. B 667 1
    • (2008) Phys. Lett. B , vol.667 , pp. 1
    • Amsler, C.1
  • 4
    • 69649107499 scopus 로고    scopus 로고
    • Five-year Wilkinson Microwave Anisotropy Probe (WMAP) observations: Cosmological interpretation
    • WMAP collaboration, E. Komatsu et al., 2009 Five-year Wilkinson Microwave Anisotropy Probe (WMAP) observations: cosmological interpretation, Astrophys. J. Suppl. 180 330 [0803.0547]
    • (2009) Astrophys. J. Suppl. , vol.180 , pp. 330
    • Collaboration, W.1    Komatsu, E.2
  • 5
    • 0036147648 scopus 로고    scopus 로고
    • Primordial nucleosynthesis with CMB inputs: Probing the early universe and light element astrophysics
    • R.H. Cyburt, B.D. Fields and K.A. Olive, 2002 Primordial nucleosynthesis with CMB inputs: probing the early universe and light element astrophysics, Astropart. Phys. 17 87 [astro-ph/0105397]
    • (2002) Astropart. Phys. , vol.17 , pp. 87
    • Cyburt, R.H.1    Fields, B.D.2    Olive, K.A.3
  • 6
    • 0043238753 scopus 로고    scopus 로고
    • Primordial nucleosynthesis in light of WMAP
    • R.H. Cyburt, B.D. Fields and K.A. Olive, 2003 Primordial nucleosynthesis in light of WMAP, Phys. Lett. B 567 227 [astro-ph/0302431]
    • (2003) Phys. Lett. B , vol.567 , pp. 227
    • Cyburt, R.H.1    Fields, B.D.2    Olive, K.A.3
  • 7
    • 0035366284 scopus 로고    scopus 로고
    • The NACRE thermonuclear reaction compilation and big bang nucleosynthesis
    • R.H. Cyburt, B.D. Fields and K.A. Olive, 2001 The NACRE thermonuclear reaction compilation and big bang nucleosynthesis, New Astron. 6 215 [astro-ph/0102179]
    • (2001) New Astron. , vol.6 , pp. 215
    • Cyburt, R.H.1    Fields, B.D.2    Olive, K.A.3
  • 8
    • 4243245028 scopus 로고    scopus 로고
    • Constraints on Ω b from nucleosynthesis of Li-7 in the standard big bang model
    • A. Coc, E. Vangioni-Flam, M. Cassé and M. Rabiet, 2002 Constraints on Ω b from nucleosynthesis of Li-7 in the standard big bang model, Phys. Rev. D 65 043510 [astro-ph/0111077]
    • (2002) Phys. Rev. D , vol.65 , pp. 043510
    • Coc, A.1
  • 9
    • 1642633161 scopus 로고    scopus 로고
    • Updated big bang nucleosynthesis confronted to WMAP observations and to the abundance of light elements
    • A. Coc, E. Vangioni-Flam, P. Descouvemont, A. Adahchour and C. Angulo, 2004 Updated big bang nucleosynthesis confronted to WMAP observations and to the abundance of light elements, Astrophys. J. 600 544 [astro-ph/0309480]
    • (2004) Astrophys. J. , vol.600 , pp. 544
    • Coc, A.1    Vangioni-Flam, E.2    Descouvemont, P.3    Adahchour, A.4    Angulo, C.5
  • 10
    • 37649029303 scopus 로고    scopus 로고
    • Primordial nucleosynthesis for the new cosmology: Determining uncertainties and examining concordance
    • R.H. Cyburt, 2004 Primordial nucleosynthesis for the new cosmology: determining uncertainties and examining concordance, Phys. Rev. D 70 023505 [astro-ph/0401091]
    • (2004) Phys. Rev. D , vol.70 , pp. 023505
    • Cyburt, R.H.1
  • 12
    • 8744297331 scopus 로고    scopus 로고
    • Present status of primordial nucleosynthesis after WMAP: Results from a new BBN code
    • A. Cuoco et al., 2004 Present status of primordial nucleosynthesis after WMAP: results from a new BBN code, Int. J. Mod. Phys. A 19 4431 [astro-ph/0307213]
    • (2004) Int. J. Mod. Phys. A , vol.19 , pp. 4431
    • Cuoco, A.1
  • 13
    • 23244458358 scopus 로고    scopus 로고
    • Nuclear reaction network for primordial nucleosynthesis: A detailed analysis of rates, uncertainties and light nuclei yields
    • P.D. Serpico, S. Esposito, F. Iocco, G. Mangano, G. Miele and O. Pisanti, 2004 Nuclear reaction network for primordial nucleosynthesis: a detailed analysis of rates, uncertainties and light nuclei yields J. Cosmol. Astropart. Phys. JCAP12(2004)010 [astro-ph/0408076]
    • (2004) J. Cosmol. Astropart. Phys. , vol.2004 , pp. 010
    • Serpico, P.D.1    Esposito, S.2    Iocco, F.3    Mangano, G.4    Miele, G.5    Pisanti, O.6
  • 14
    • 66249125007 scopus 로고    scopus 로고
    • A bitter pill: The primordial lithium problem worsens
    • R.H. Cyburt, B.D. Fields and K.A. Olive, 2008 A bitter pill: the primordial lithium problem worsens J. Cosmol. Astropart. Phys. JCAP11(2008)012 [0808.2818]
    • (2008) J. Cosmol. Astropart. Phys. , vol.2008 , pp. 012
    • Cyburt, R.H.1    Fields, B.D.2    Olive, K.A.3
  • 15
    • 0000618394 scopus 로고
    • Probing the early universe: A review of primordial nucleosynthesis beyond the standard big bang
    • R.A. Malaney and G.J. Mathews, 1993 Probing the early universe: a review of primordial nucleosynthesis beyond the standard big bang, Phys. Rept. 229 145
    • (1993) Phys. Rept. , vol.229 , pp. 145
    • Malaney, R.A.1    Mathews, G.J.2
  • 16
    • 0000133652 scopus 로고    scopus 로고
    • Big bang nucleosynthesis and physics beyond the standard model
    • S. Sarkar, 1996 Big bang nucleosynthesis and physics beyond the standard model, Rept. Prog. Phys. 59 1493 [hep-ph/9602260].
    • (1996) Rept. Prog. Phys. , vol.59 , pp. 1493
    • Sarkar, S.1
  • 18
    • 0347578045 scopus 로고    scopus 로고
    • The cosmological baryon density from the deuterium to hydrogen ratio towards QSO absorption systems: D/H towards Q1243+3047
    • D. Kirkman, D. Tytler, N. Suzuki, J.M. O'Meara and D. Lubin, 2003 The cosmological baryon density from the deuterium to hydrogen ratio towards QSO absorption systems: D/H towards Q1243+3047, Astrophys. J. Suppl. 149 1 [astro-ph/0302006]
    • (2003) Astrophys. J. Suppl. , vol.149 , pp. 1
    • Kirkman, D.1    Tytler, D.2    Suzuki, N.3    O'Meara, J.M.4    Lubin, D.5
  • 20
    • 59049096646 scopus 로고    scopus 로고
    • Lithium abundances of halo dwarfs based on excitation temperature. I. Local thermodynamic equilibrium
    • A. Hosford, S.G. Ryan, A.E. García Pérez, J.E. Norris and K.A. Olive, 2009 Lithium abundances of halo dwarfs based on excitation temperature. I. Local thermodynamic equilibrium, Astron. Astrophys. 493 601
    • (2009) Astron. Astrophys. , vol.493 , pp. 601
    • Hosford, A.1
  • 21
    • 0000739386 scopus 로고
    • Chemical composition of H II regions in the large magellanic cloud and its cosmological implications
    • M. Peimbert and S. Torres-Peimbert, 1974 Chemical composition of H II regions in the large magellanic cloud and its cosmological implications, Astrophys. J. 193 327
    • (1974) Astrophys. J. , vol.193 , pp. 327
    • Peimbert, M.1    Torres-Peimbert, S.2
  • 22
    • 48549094165 scopus 로고    scopus 로고
    • Review of particle physics
    • Particle Data Group collaboration
    • Particle Data Group collaboration, C. Amsler et al., 2008 Review of particle physics, Phys. Lett. B 667 1
    • (2008) Phys. Lett. B , vol.667 , pp. 1
    • Amsler, C.1
  • 23
    • 0035330987 scopus 로고    scopus 로고
    • Uncertainties in 4He abundance determinations in extragalactic H II regions
    • 4He abundance determinations in extragalactic H II regions, New Astron. 6 119
    • (2001) New Astron. , vol.6 , pp. 119
    • Olive, K.A.1    Skillman, E.D.2
  • 24
    • 11344281870 scopus 로고    scopus 로고
    • A realistic determination of the error on the primordial helium abundance: Steps toward non-parametric nebular helium abundances
    • K.A. Olive and E.D. Skillman, 2004 A realistic determination of the error on the primordial helium abundance: steps toward non-parametric nebular helium abundances, Astrophys. J. 617 29 [astro-ph/0405588]
    • (2004) Astrophys. J. , vol.617 , pp. 29
    • Olive, K.A.1    Skillman, E.D.2
  • 26
    • 12044258647 scopus 로고
    • The primordial helium abundance from a new sample of metal-deficient blue compact galaxies
    • Y.I. Izotov, T.X. Thuan and V.A. Lipovetsky, 1994 The primordial helium abundance from a new sample of metal-deficient blue compact galaxies, Astrophys. J. 435 647
    • (1994) Astrophys. J. , vol.435 , pp. 647
    • Izotov, Y.I.1    Thuan, T.X.2    Lipovetsky, V.A.3
  • 28
    • 0002611902 scopus 로고    scopus 로고
    • The primordial helium abundance: Systematic effects and a new determination
    • Y.I. Izotov, T.X. Thuan and V.A. Lipovetsky, 1997 The primordial helium abundance: systematic effects and a new determination, Astrophys. J. Suppl. 108 1
    • (1997) Astrophys. J. Suppl. , vol.108 , pp. 1
    • Izotov, Y.I.1    Thuan, T.X.2    Lipovetsky, V.A.3
  • 30
    • 0033589923 scopus 로고    scopus 로고
    • Helium abundance in the most metal-deficient blue compact galaxies: I ZW 18 and SBS 0335-052
    • Y.I. Izotov, F.H. Chaffee, C.B. Foltz, R.F. Green, N.G. Guseva and T.X. Thuan, 1999 Helium abundance in the most metal-deficient blue compact galaxies: I ZW 18 and SBS 0335-052, Astrophys. J. 527 757 [astro-ph/9907228]
    • (1999) Astrophys. J. , vol.527 , pp. 757
    • Izotov, Y.I.1    Chaffee, F.H.2    Foltz, C.B.3    Green, R.F.4    Guseva, N.G.5    Thuan, T.X.6
  • 31
    • 0034288095 scopus 로고    scopus 로고
    • The chemical composition of the small magellanic cloud H II region NGC 346 and the primordial helium abundance
    • M. Peimbert, A. Peimbert and M.T. Ruiz, 2000 The chemical composition of the small magellanic cloud H II region NGC 346 and the primordial helium abundance, Astrophys. J. 541 688 [astro-ph/0003154]
    • (2000) Astrophys. J. , vol.541 , pp. 688
    • Peimbert, M.1    Peimbert, A.2    Ruiz, M.T.3
  • 32
    • 0036314816 scopus 로고    scopus 로고
    • The primordial helium-4 abundance determination: Systematic effects
    • T.X. Thuan and Y.I. Izotov, 2002 The primordial helium-4 abundance determination: systematic effects Space Sci. Rev. 100 263 [astro-ph/0112348]
    • (2002) Space Sci. Rev. , vol.100 , Issue.1-4 , pp. 263
    • Thuan, T.X.1    Izotov, Y.I.2
  • 33
    • 0000807717 scopus 로고    scopus 로고
    • Temperature bias and the primordial helium abundance determination
    • A. Peimbert, M. Peimbert and V. Luridiana, 2002 Temperature bias and the primordial helium abundance determination, Astrophys. J. 565 668 [astro-ph/0107189]
    • (2002) Astrophys. J. , vol.565 , pp. 668
    • Peimbert, A.1    Peimbert, M.2    Luridiana, V.3
  • 34
    • 0041832089 scopus 로고    scopus 로고
    • The effect of collisional enhancement of Balmer lines on the determination of the primordial helium abundance
    • V. Luridiana, A. Peimbert, M. Peimbert and M. Cervino, 2003 The effect of collisional enhancement of Balmer lines on the determination of the primordial helium abundance, Astrophys. J. 592 846 [astro-ph/0304152]
    • (2003) Astrophys. J. , vol.592 , pp. 846
    • Luridiana, V.1    Peimbert, A.2    Peimbert, M.3    Cervino, M.4
  • 35
    • 17044381941 scopus 로고    scopus 로고
    • First year Wilkinson Microwave Anisotropy Probe (WMAP) observations: Determination of cosmological parameters
    • WMAP collaboration, D.N. Spergel et al., 2003 First year Wilkinson Microwave Anisotropy Probe (WMAP) observations: determination of cosmological parameters, Astrophys. J. Suppl. 148 175 [astro-ph/0302209].
    • (2003) Astrophys. J. Suppl. , vol.148 , pp. 175
    • Collaboration, W.1    Spergel, D.N.2
  • 36
    • 1842535554 scopus 로고    scopus 로고
    • Systematic effects and a new determination of the primordial abundance of 4He and dY/dZ from observations of blue compact galaxies
    • 4He and dY/dZ from observations of blue compact galaxies, Astrophys. J. 602 200 [astro-ph/0310421]
    • (2004) Astrophys. J. , vol.602 , pp. 200
    • Izotov, Y.I.1    Thuan, T.X.2
  • 37
    • 34347334578 scopus 로고    scopus 로고
    • Wilkinson Microwave Anisotropy Probe (WMAP) three year results: Implications for cosmology
    • WMAP collaboration, D.N. Spergel et al., 2007 Wilkinson Microwave Anisotropy Probe (WMAP) three year results: implications for cosmology, Astrophys. J. Suppl. 170 377 [astro-ph/0603449]
    • (2007) Astrophys. J. Suppl. , vol.170 , pp. 377
    • Collaboration, W.1    Spergel, D.N.2
  • 38
    • 34347263388 scopus 로고    scopus 로고
    • The primordial abundance of 4He: A self-consistent empirical analysis of systematic effects in a large sample of low-metallicity HII regions
    • 4He: a self-consistent empirical analysis of systematic effects in a large sample of low-metallicity HII regions, Astrophys. J. 662 15 [astro-ph/0702072]
    • (2007) Astrophys. J. , vol.662 , pp. 15
    • Izotov, Y.I.1    Thuan, T.X.2    Stasinska, G.3
  • 39
    • 35348878653 scopus 로고    scopus 로고
    • Revised primordial helium abundance based on new atomic data
    • M. Peimbert, V. Luridiana and A. Peimbert, 2007 Revised primordial helium abundance based on new atomic data, Astrophys. J. 666 636 [astro-ph/0701580]
    • (2007) Astrophys. J. , vol.666 , pp. 636
    • Peimbert, M.1    Luridiana, V.2    Peimbert, A.3
  • 40
    • 77949538198 scopus 로고    scopus 로고
    • The primordial abundance of 4He: Evidence for non-standard big bang nucleosynthesis
    • 4He: evidence for non-standard big bang nucleosynthesis, Astrophys. J. 710 L67 [1001.4440]
    • (2010) Astrophys. J. , vol.710 , pp. 67
    • Izotov, Y.I.1    Thuan, T.X.2
  • 41
    • 33947525255 scopus 로고    scopus 로고
    • He i emission in the orion nebula and implications for primordial helium abundance
    • R.L. Porter, G.J. Ferland and K.B. MacAdam, 2007 He I emission in the orion nebula and implications for primordial helium abundance, Astrophys. J. 657 327 [astro-ph/0611579]
    • (2007) Astrophys. J. , vol.657 , pp. 327
    • Porter, R.L.1    Ferland, G.J.2    MacAdam, K.B.3
  • 42
    • 33750081070 scopus 로고
    • Primordial helium, spectrophotometric technique, and i Zwicky 18
    • K. Davidson and T.D. Kinman, 1985 Primordial helium, spectrophotometric technique, and I Zwicky 18, Astrophys. J. Suppl. 58 321
    • (1985) Astrophys. J. Suppl. , vol.58 , pp. 321
    • Davidson, K.1    Kinman, T.D.2
  • 43
    • 12044258263 scopus 로고
    • Spatially resolved optical and near-infrared spectroscopy of i ZW 18
    • E.D. Skillman and R.C. Kennicutt, 1993 Spatially resolved optical and near-infrared spectroscopy of I ZW 18, Astrophys. J. 411 655
    • (1993) Astrophys. J. , vol.411 , pp. 655
    • Skillman, E.D.1    Kennicutt, R.C.2
  • 45
    • 0001617283 scopus 로고
    • The relationship between infrared, optical and ultraviolet extinction
    • J.A. Cardelli, G.C. Clayton and J.S. Mathis, 1989 The relationship between infrared, optical and ultraviolet extinction, Astrophys. J. 345 245
    • (1989) Astrophys. J. , vol.345 , pp. 245
    • Cardelli, J.A.1    Clayton, G.C.2    Mathis, J.S.3
  • 46
    • 33749179601 scopus 로고    scopus 로고
    • Balmer and Paschen jump temperature determinations in low-metallicity emission-line galaxies
    • N.G. Guseva, Y. Izotov and T.X. Thuan, 2006 Balmer and Paschen jump temperature determinations in low-metallicity emission-line galaxies, Astrophys. J. 644 890 [astro-ph/0603134]
    • (2006) Astrophys. J. , vol.644 , pp. 890
    • Guseva, N.G.1    Izotov, Y.2    Thuan, T.X.3
  • 47
    • 85021064361 scopus 로고    scopus 로고
    • Keck HIRES spectroscopy of extragalactic HII regions: C and O abundances from recombination lines
    • C. Esteban et al., 2009 Keck HIRES spectroscopy of extragalactic HII regions: C and O abundances from recombination lines, Astrophys. J. 700 654 [0905.2532]
    • (2009) Astrophys. J. , vol.700 , pp. 654
    • Esteban, C.1
  • 48
    • 18744412954 scopus 로고    scopus 로고
    • Theoretical He i emissivities in the case B approximation
    • R.L. Porter, R.P. Bauman, G.J. Ferland and K.B. MacAdam, 2005 Theoretical He I emissivities in the case B approximation, Astrophys. J. 622 L73 [astro-ph/0502224]
    • (2005) Astrophys. J. , vol.622 , pp. 73
    • Porter, R.L.1    Bauman, R.P.2    Ferland, G.J.3    MacAdam, K.B.4
  • 50
    • 0033586108 scopus 로고    scopus 로고
    • Improving predictions for helium emission lines
    • R.A. Benjamin, E. D. Skillman and D.P. Smits, 1999 Improving predictions for helium emission lines, Astrophys. J. 514 307 [astro-ph/9810087]
    • (1999) Astrophys. J. , vol.514 , pp. 307
    • Benjamin, R.A.1    Skillman, E.D.2    Smits, D.P.3
  • 51
    • 0000623575 scopus 로고
    • Recombination-line intensities for hydrogenic ions. i - Case B calculations for H i and He II
    • D.G. Hummer and P.J. Storey, 1987 Recombination-line intensities for hydrogenic ions. I - Case B calculations for H I and He II Mon. Not. Roy. Astron. Soc. 224 801
    • (1987) Mon. Not. Roy. Astron. Soc. , vol.224 , pp. 801
    • Hummer, D.G.1    Storey, P.J.2
  • 52
    • 0002933823 scopus 로고
    • Reassessing the primordial helium abundance - New observations of NGC 4861 and CG 1116 + 51
    • H.L. Dinerstein and G.A. Shields, 1986 Reassessing the primordial helium abundance - new observations of NGC 4861 and CG 1116 + 51, Astrophys. J. 311 45
    • (1986) Astrophys. J. , vol.311 , pp. 45
    • Dinerstein, H.L.1    Shields, G.A.2
  • 53
    • 4243354415 scopus 로고    scopus 로고
    • Reexamining the helium abundance of i ZW 18
    • Y.I. Izotov and T.X. Thuan, 1998 Reexamining the helium abundance of I ZW 18, Astrophys. J. 497 227
    • (1998) Astrophys. J. , vol.497 , pp. 227
    • Izotov, Y.I.1    Thuan, T.X.2
  • 54
    • 2342650198 scopus 로고    scopus 로고
    • Toward an understanding of the systematic uncertainties in deriving the primordial helium abundance from H II region observations
    • E.D. Skillman, E. Terlevich and R. Terlevich, 1998 Toward an understanding of the systematic uncertainties in deriving the primordial helium abundance from H II region observations Space Sci. Rev. 84 105.
    • (1998) Space Sci. Rev. , vol.84
    • Skillman, E.D.1    Terlevich, E.2    Terlevich, R.3
  • 55
    • 85021282827 scopus 로고    scopus 로고
    • The true durations of starbursts: HST observations of three nearby dwarf starburst galaxies
    • K.B.W. McQuinn et al., 2009 The true durations of starbursts: HST observations of three nearby dwarf starburst galaxies, Astrophys. J. 695 561 [0901.2361]
    • (2009) Astrophys. J. , vol.695 , pp. 561
    • McQuinn, K.B.W.1
  • 56
    • 14544272294 scopus 로고    scopus 로고
    • Evolutionary stellar population synthesis at high spectral resolution: Optical wavelengths
    • R.M. Gonzlez Delgado, M. Cervĩo, L. Pires Martins, C. Leitherer and P.H. Hauschildt, 2005 Evolutionary stellar population synthesis at high spectral resolution: optical wavelengths, Mon. Not. Roy. Astron. Soc. 357 945 [astro-ph/0501204]
    • (2005) Mon. Not. Roy. Astron. Soc. , vol.357 , pp. 945
    • Gonzlez Delgado, R.M.1
  • 57
    • 15544369775 scopus 로고    scopus 로고
    • A high-resolution stellar library for evolutionary population synthesis
    • L.P. Martins, R.M. Gonzlez Delgado, C. Leitherer, M. Cervĩo and P. Hauschildt, 2005 A high-resolution stellar library for evolutionary population synthesis, Mon. Not. Roy. Astron. Soc. 358 49 [astro-ph/0501225]
    • (2005) Mon. Not. Roy. Astron. Soc. , vol.358 , pp. 49
    • Martins, L.P.1
  • 58
    • 85053773046 scopus 로고    scopus 로고
    • An R-matrix with pseudo-states approach to the electron-impact excitation of H i for diagnostic applications in fusion plasmas
    • H. Anderson, C.P. Ballance, N.R. Badnell and H.P. Summers, 2002 An R-matrix with pseudo-states approach to the electron-impact excitation of H I for diagnostic applications in fusion plasmas, J. Phys. B 35 1613
    • (2002) J. Phys. B , vol.35 , pp. 1613
    • Anderson, H.1    Ballance, C.P.2    Badnell, N.R.3    Summers, H.P.4
  • 59
    • 0034628728 scopus 로고    scopus 로고
    • Ionization corrections for low-metallicity H II regions and the primordial helium abundance
    • S.M. Viegas, R. Gruenwald and G. Steigman, 2000 Ionization corrections for low-metallicity H II regions and the primordial helium abundance Astrophys. J. 531 813 [astro-ph/9909213]
    • (2000) Astrophys. J. , vol.531 , pp. 813
    • Viegas, S.M.1    Gruenwald, R.2    Steigman, G.3
  • 60
    • 0034690827 scopus 로고    scopus 로고
    • The primordial helium abundance: Toward understanding and removing the cosmic scatter in the DY/DZ relation
    • D.R. Ballantyne, G.J. Ferland and P.G. Martin, 2000 The primordial helium abundance: toward understanding and removing the cosmic scatter in the DY/DZ relation, Astrophys. J. 536 773
    • (2000) Astrophys. J. , vol.536 , pp. 773
    • Ballantyne, D.R.1    Ferland, G.J.2    Martin, P.G.3
  • 61
    • 0001347963 scopus 로고    scopus 로고
    • The evolution of helium and hydrogen ionization corrections as HII regions age
    • R. Gruenwald, G. Steigman and S.M. Viegas, 2002 The evolution of helium and hydrogen ionization corrections as HII regions age, Astrophys. J. 567 931 [astro-ph/0109071]
    • (2002) Astrophys. J. , vol.567 , pp. 931
    • Gruenwald, R.1    Steigman, G.2    Viegas, S.M.3
  • 62
    • 0007113639 scopus 로고
    • Spatial variations in the physical conditions in the giant extragalactic H II region NGC 5471
    • E.D. Skillman, 1985Spatial variations in the physical conditions in the giant extragalactic H II region NGC 5471, Astrophys. J. 290 449
    • (1985) Astrophys. J. , vol.290 , pp. 449
    • Skillman, E.D.1
  • 63
    • 0347383440 scopus 로고    scopus 로고
    • A bayesian estimate of the primordial helium abundance
    • C.J. Hogan, K.A. Olive and S.T. Scully, 1997 A bayesian estimate of the primordial helium abundance, Astrophys. J. 489 L119 [astro-ph/9705107]
    • (1997) Astrophys. J. , vol.489 , pp. 119
    • Hogan, C.J.1    Olive, K.A.2    Scully, S.T.3
  • 64
    • 65349121593 scopus 로고    scopus 로고
    • Fluorescent excitation of Balmer lines in gaseous nebulae: Case D
    • V. Luridiana et al., 2009 Fluorescent excitation of Balmer lines in gaseous nebulae: case D, Astrophys. J. 691 1712 [0810.5556]
    • (2009) Astrophys. J. , vol.691 , pp. 1712
    • Luridiana, V.1
  • 65
    • 0010653984 scopus 로고    scopus 로고
    • Radiative transfer effects in He i emission lines
    • R.A. Benjamin, E.D. Skillman and D.P. Smits, 2002 Radiative transfer effects in He I emission lines, Astrophys. J. 569 288 [astro-ph/0202227]
    • (2002) Astrophys. J. , vol.569 , pp. 288
    • Benjamin, R.A.1    Skillman, E.D.2    Smits, D.P.3
  • 66
    • 0001072283 scopus 로고
    • Temperature determinations of H II regions
    • M. Peimbert, 1967 Temperature determinations of H II regions, Astrophys. J. 150 825
    • (1967) Astrophys. J. , vol.150 , pp. 825
    • Peimbert, M.1
  • 67
    • 77949508024 scopus 로고    scopus 로고
    • Uncertainties in theoretical HeI emissivities: HII regions, primordial abundance, and cosmological recombination
    • R.L. Porter, G.J. Ferland, K.B. MacAdam and P.J. Storey, 2009 Uncertainties in theoretical HeI emissivities: HII regions, primordial abundance, and cosmological recombination, Mon. Not. Roy. Astron. Soc. 393 L36 [0811.1216]
    • (2009) Mon. Not. Roy. Astron. Soc. , vol.393 , pp. 36
    • Porter, R.L.1    Ferland, G.J.2    MacAdam, K.B.3    Storey, P.J.4
  • 69
    • 0039591297 scopus 로고    scopus 로고
    • Observations of Doppler shifts in a solar polar coronal hole
    • G. Steigman, S.M. Viegas and R. Gruenwald, 1997 Observations of Doppler shifts in a solar polar coronal hole, Astrophys. J. 490 187
    • (1997) Astrophys. J. , vol.490 , pp. 187
    • Steigman, G.1    Viegas, S.M.2    Gruenwald, R.3


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.