Browse by Fellow

A'Hearn Michael, F. ; Krishna Swamy, K. S. ; Wellnitz, D. D. (2007) Prompt ultraviolet emission by OH in Comet Hyakutake Bulletin of the American Astronomical Society, 39 . p. 507. ISSN 0002-7537

Tomohiko, Sekiguchi ; Hitoshi, Hasegawa ; Kazuyoshi, Sunada ; Nobuharu, Ukita ; Hideyo, Kawakita ; Jun-Ichi, Watanabe ; Krishna Swamy, K. S. (2002) HCN observations of C/Ikeya-Zhang using the NRO 45 m telescope Proceedings of Asteroids, Comets, Meteors - ACM 2002 . pp. 701-703.

Krishna Swamy, K. S. ; A'hearn, M. F. (2000) On so in comets Earth, Moon, and Planets, 84 (2). pp. 109-113. ISSN 0167-9295

Krishna Swamy, K. S. (2000) On the differences observed between Comets Tabur and Liller The Observatory, 120 . pp. 329-331. ISSN 0029-7704

Krishna Swamy, K. S. (1999) Emission band ratios of CO in comets Bulletin of the Astronomical Society of India, 27 . pp. 75-77. ISSN 0304-9523

Krishna Swamy, K. S. (1997) On the rotational population distribution of C₂ in comets Astrophysical Journal, 481 (2). pp. 1004-1006. ISSN 0004-637X

Krishna Swamy, K. S. ; Tarafdar, S. P. (1996) On the observed production rate of C₂ in comets Bulletin of the Astronomical Soceity of India, 24 . pp. 633-638. ISSN 0304-9523

Krishna Swamy, K. S. (1996) Profile analysis of the (2,0) Phillips band of C_2_ in comet P/Halley Astronomy and Astrophysics, 313 . pp. 323-326. ISSN 0004-6361

Krishna Swamy, K. S. (1995) Impact of comets on solar, system objects Bulletin of the Astronomical Society of India, 23 . pp. 411-418. ISSN 0304-9523

Tarafdar, S. P. ; Krishna Swamy, K. S. (1995) Nature of the evolution of comet nuclei deduced from the production rate of H₂O Bulletin of the Astronomical Society of India, 23 . pp. 424-425. ISSN 0304-9523

Tarafdar, S. P. ; Krishna Swamy, K. S. (1993) Study of the A-X (0,0) band profile of CS in comets Astronomy and Astrophysics, 271 . pp. 326-334. ISSN 0004-6361

Tarafdar, S. P. ; Krishna Swamy, K. S. ; Badrinathan, C. ; Mathur, D. (1992) Are carbon clusters the cause of interstellar diffuse BANDS ? (CP) Proceedings of the 150th Symposium of the International Astronomical Union . p. 139.

Tarafdar, S. P. ; Krishna Swamy, K. S. ; Badrinathan, C. ; Mathur, D. (1992) Are carbon clusters the cause of interstellar diffuse bands? Proceedings of the 150th Symposium of the International Astronomical Union, Campos do Jordao, Sao Paulo, Brazil . pp. 139-141.

Chakrabarti, S. K. ; Krishna Swamy, K. S. (1992) Is there a comet cloud around PSR 1257 + 12 ? Astronomy and Astrophysics, 263 (1-2). L1-L2. ISSN 0004-6361

Krishna Swamy, K. S. (1991) Synthetic profile analysis of the observed (0,0) Swan band of Comet Halley The Astrophysical Journal, 373 . pp. 266-270. ISSN 0004-637X

Krishna Swamy, K. S. (1991) Heliocentric variation of dust production in comets inferred from infrared observations Astronomy and Astrophysics, 241 (1). pp. 260-266. ISSN 0004-6361

Krishna Swamy, S. K. (1991) Comets pre and post Halley Proceedings of the Astronomical Society of Australia, 9 (2). pp. 219-224. ISSN 0066-9997

Krishna-Swamy, K. S. ; Sandford, S. A. ; Allamandola, L. J. ; Witteborn, F. C. ; Bregman , J. D. (1989) Infrared emission from Comets The Astrophysical Journal, 340 (1). pp. 527-549. ISSN 0004-637X

Shah, G. A. ; Krishna Swamy, K. S. (1988) Nature of dust grains in comets Monthly Notices of the Royal Astronomical Society, 233 . pp. 573-579. ISSN 0035-8711

Wallis, M. K. ; Krishna Swamy, K. S. (1988) Resonance fluorescence calculations for some sulphur diatomics in comets Astronomy & Astrophysics Supplement Series, 74 (2). pp. 227-232. ISSN 0365-0138

Krishna Swamy, K. S. ; Sandford, Scott A. ; Allamandola, Louis J. ; Witteborn, Fred C. ; Bregman, Jesse D. (1988) A multicomponent model of the infrared emission from Comet Halley ICARUS, 75 (2). pp. 351-370. ISSN 0019-1035

O'dell, C. R. ; Robinson, Ronald R. ; Krishna Swamy, K. S. ; McCarthy, Patrick J. ; Hyron, Spinrad (1988) C2 in Comet Halley - evidence for its being third generation and resolution of the vibrational population discrepancy The Astrophysical Journal, 334 . pp. 476-488. ISSN 0004-637X

Krishna Swamy, K. S. ; Wallis Max, K. (1987) Some diatomic molecules from Halley's UV spectra near spacecraft flybys Astronomy and Astrophysics, 187 (1-2). pp. 329-332. ISSN 0004-6361

Krishna Swamy, K. S. (1987) Study of the isotopic features of Swan bands in comets Astronomy and Astrophysics, 187 (1-2). pp. 388-390. ISSN 0004-6361

Krishna Swamy, K. S. ; Wallis, M. K. (1987) Sulphur compounds in cometary IUE spectra Monthly Notices of the Royal Astronomical Society, 228 . pp. 305-312. ISSN 0035-8711

O'dell, C. R. ; Krishna Swamy, K. S. (1987) Statistical equilibrium in cometary C2. IV - A 10 level model including singlet-triplet transitions The Astrophysical Journal, 317 . pp. 543-550. ISSN 0004-637X

Krishna Swamy, K. S. (1987) Synthetic Swan band profile of (1,0) of (C-12)(C-12) and (0,0) of (C-12)(C-12) and (C-12)(C-13) in comets Monthly Notices of the Royal Astronomical Society, 224 . pp. 537-542. ISSN 0035-8711

Krishna Swamy, K. S. (1987) Excitation mechanism of cometary lines Astrochemistry, Proceedings of the IAU Symposium . pp. 447-452.

Tarafdar, S. P. ; Krishna Swamy, K. S. (1987) On the determination of electron density in diffuse clouds The Observatory, 107 . pp. 161-163.

Tarafdar, S. P. ; Krishna Swamy, K. S. (1987) Possible H₂ emission in comet Bradfield The Observatory, 107 . pp. 29-30. ISSN 0029-7704

Krishna Swamy, K. S. ; Shah, G. A. (1987) The dust grains in the coma of Comet West Earth, Moon, and Planets, 38 (3). pp. 273-283. ISSN 0167-9295

Krishnaswamy, K. S. (1986) Profile study of ¹²C¹³C features in comets Proceedings of the 20th ESLAB Symposium on the Exploration of Halley's Comet, 3 . pp. 3-5.

Krishna Swamy, K. S. (1986) Synthetic rotational spectra of C₂ Swan bands in comets Publications of the Astronomical Society of the Pacific, 98 (600). pp. 252-253. ISSN 0004-6280

Krishna Swamy, K. S. (1986) Profile analysis of the (B-X) bands of CO⁺ in comet West Earth, Moon, and Planets, 34 (3). pp. 281-282. ISSN 0167-9295

Krishnaswamy, K. S. ; Wallis Max, K. (1986) Some molecular abundances in Halley's UV spectra Proceedings of the 20th ESLAB Symposium on the Exploration of Halley's Comet, 3 . pp. 7-10.

Krishna-Swamy, K. S. ; Wallis, M. K. (1986) Sulphur compounds in comets Proceedings of an International Symposium on New Insights in Astrophysics . pp. 133-136.

Krishna Swamy, K. S. (1984) Rotational transitions of CO in comets Bulletin of the Astronomical Society of India, 12 (1). pp. 66-67. ISSN 0304-9523

Swamy Krishna, K. S. ; Spinrad, H. (1984) The detection of the 5577.3å line of [OI] in comets Earth, Moon, and Planets, 30 (1). pp. 105-110. ISSN 0167-9295

Krishna Swamy, K. S. (1983) Fluorescence excitation of CO in comets The Astrophysical Journal, 267 . pp. 882-885. ISSN 0004-637X

Krishna Swamy, K. S. (1983) Expected and observed profiles of CO and CS in cometary spectra Earth, Moon, and Planets, 29 (2). pp. 191-193. ISSN 0167-9295

Krishna Swamy, K. S. ; Tarafdar, S. P. (1982) Molecules in celestial objects. III - Study of CO in interstellar diffuse clouds Monthly Notices of the Royal Astronomical Society, 200 . pp. 431-444. ISSN 0035-8711

Odell, C. R. ; Swamy, K. S. K. (1981) Statistical equilibrium in cometary C2. III - Triplet-singlet, Phillips, Ballik-Ramsay, and Mulliken bands The Astrophysical Journal, 251 . pp. 805-808. ISSN 0004-6256

Swamy, K. S. K. ; Tarafdar, S. P. (1981) Molecules in celestial objects. II - IUE observations of CO towards Psi Persei /B5 Ve/ Monthly Notices of the Royal Astronomical Society, 196 . pp. 67-71. ISSN 0035-8711

Krishna Swamy, K. S. (1981) Intensities of various bands of the molecules CN, CN/+/, and CS in comets Astronomy and Astrophysics, 97 (1). pp. 110-113. ISSN 0004-6361

Swamy, K. S. K. (1981) Statistical equilibrium calculations of cometary molecules Proceedings of the Fifth College Park Colloquium on Chemical Evolution . pp. 43-51.

Shah, G. A. ; Krishna-Swamy, K. S. (1981) A model reflection nebula in the far Infrared The Astrophysical Journal, 243 . pp. 175-183. ISSN 0004-637X

Vardya, M. S. ; Krishna Swamy, K. S. (1980) Can lines of C^-₂ be observed in carbon stars? Chemical Physics Letters, 73 (3). pp. 616-617. ISSN 0009-2614

Swamy, K. S. K. ; Odell, C. R. (1979) Statistical equilibrium in cometary C2. II-Swan/Phillips band ratios The Astrophysical Journal, 231 . pp. 624-626. ISSN 0004-637X

Krishna Swamy, K. S. ; Donn, B. (1979) An analysis of the infrared continuum of comets. II. Comet Kohoutek The Astronomical Journal, 84 . pp. 692-697. ISSN 0004-6256

Krishna Swamy, K. S. (1979) Intensities of A-X and B-X bands of CO and CO/+/ in comets The Astrophysical Journal, 227 . pp. 1082-1085. ISSN 0004-637X

Shah, G. A. ; Krishna Swamy, K. S. (1979) Reflection nebula in the far-ultraviolet. 2. Silicate and graphite grains Kodaikanal Observatory Bulletin, Series A, 2 . pp. 195-202. ISSN 0374-3632

Smith, A. M. ; Stecher, T. P. ; Krishna Swamy, K. S. (1978) An interstellar cloud density from Copernicus observations of CO in the spectrum of Zeta Ophiuchi The Astrophysical Journal, 220 . pp. 138-148. ISSN 0004-637X

Krishna Swamy, K. S. (1978) On the observed polarization of comet Ikeya-Seki (1965 VIII) Astrophysics and Space Science, 57 (2). pp. 491-497. ISSN 0004-640X

Shah, G. A. ; Krishna Swamy, K. S. (1978) Reflection nebula in the far-ultraviolet. 1. Icy grains Kodaikanal Observatory Bulletin, Series A, 2 . pp. 95-104. ISSN 0374-3632

Swamy, K. S. K. ; Odell, C. R. (1977) Statistical equilibrium in cometary C2. I The Astrophysical Journal, 216 . pp. 158-164. ISSN 0004-637X

Krishna Swamy, K. S. (1977) R CrB and the graphite feature at λ₂₂₀₀Å Observatory, 97 . pp. 144-146. ISSN 0029-7704

Krishna Swamy, K. S. (1977) Equivalent width of molecular lines in stars. III: Lines of Lyman band of H₂ and (A-X) Band of CO and SiO in stars Astrophysics and Space Science, 49 (2). pp. 389-398. ISSN 0004-640X

Iyengar, K. V. K. ; Krishna Swamy, K. S. (1977) On the observed infrared fluxes from extragalactic H II regions Astrophysics and Space Science, 50 (1). pp. 87-92. ISSN 0004-640X

Iyengar, K. V. K. ; Krishna Swamy, K. S. (1976) Energy balance of the infrared radiation in planetary nebulae The Astrophysical Journal, 210 . pp. 518-523. ISSN 0004-637X

Iyengar, K. V. K. ; Krishna Swamy, K. S. (1976) Lyman alpha heating of the grain in H II regions Bulletin of the Astronomical Society of India, 4 . pp. 85-86. ISSN 0304-9523

Krishna Swamy, K. S. (1976) Equivalent width of molecular lines in stars. II: lines of (A-X) band of CO and SiO in the solar atmosphere Solar Physics, 47 (2). pp. 469-474. ISSN 0038-0938

Krishna Swamy, K. S. (1975) Equivalent width of molecular lines in stars. I: Lyman and Werner bands of H₂ in the solar atmosphere Solar Physics, 41 (2). pp. 301-312. ISSN 0038-0938

Krishna Swamy, K. S. ; Morton, D. C. ; Smith, A. M. ; Stecher, T. P. (1975) Interpretation of the ζ Oph ultraviolet CO spectrum Bulletin of the Astronomical Society of India, 7 . p. 464. ISSN 0304-9523

Hobbs, R. W. ; Brandt, J. C. ; Maran, S. P. ; Webster, W. J. ; Swamy, K. S. K. (1975) Microwave continuum radiation from comet Kohoutek 1973f: emission from the icy-grain halo The Astrophysical Journal, 1 . pp. 749-755. ISSN 0004-637X

Krishna Swamy, K. S. ; Stecher, Theodore P. (1974) Non-Lte H₂⁺ as the source of missing opacity in the solar atmosphere The Astrophysical Journal, 194 . L153-L156. ISSN 0004-637X

Krishna Swamy, K. S. ; Tarafdar, S. P. (1974) Equivalent width of interstellar molecular lines. IV: analyses of the line spectrum of H₂ in the interstellar spectrum of δ scorpii Astrophysics and Space Science, 26 (1). pp. 179-182. ISSN 0004-640X

Krishna Swamy, K. S. ; Tarafdar, S. P. (1973) Equivalent width of interstellar molecular lines. III. Equivalent widths of the bands (A-X), (B-X), (C-X), (D-X), (E-X) and (F-X) of CH and (A-X) of CH⁺ Astronomy & Astrophysics, 28 . pp. 99-101. ISSN 0004-6361

Krishna Swamy, K. S. (1972) Dust model for R coronae borealis and RY sagittarii Publications of the Astronomical Society of the Pacific, 84 (497). pp. 64-67. ISSN 0004-6280

Krishna Swamy, K. S. ; Tarafdar, S. P. (1972) Equivalent width of interstellar molecular lines 1 CO, SiO, H₂ and CS in the interstellar of ζ Ophiuchi Astronomy & Astrophysics, 18 (415). pp. 415-423. ISSN 0004-6361

Krishna-Swamy, K. S. ; Tarafdar, S. P. (1972) Equivalent width of interstellar molecular lines. II. Co, SiO, CS, H₂ and HD in the interstellar spectrum of ξ Persei Astronomy & Astrophysics, 20 . pp. 341-345. ISSN 0004-6361

Krishna Swamy, K. S. (1972) The absorption feature at 2200 Å in the interstellar reddening curve Astrophysics and Space Science, 16 (1). pp. 75-80. ISSN 0004-640X

Swamy, K. S. K. (1971) Infrared radiation from grains in Orion Astronomy & Astrophysics, 14 . pp. 405-407. ISSN 0004-6361

Krishna Swamy, K. S. (1971) Thermal emission from grains in the galactic center The Astrophysical Journal, 167 . pp. 63-69. ISSN 0004-637X

Krishna Swamy, K. S. (1971) On the infra-red radiation from eta Carinae Observatory, 91 . pp. 120-123. ISSN 0029-7704

Krishna Swamy, K. S. (1971) Thermal emission from the grains in the planetary nebula BD 30 3639 Observatory, 91 . pp. 110-111. ISSN 0029-7704

Krishna Swamy, K. S. ; Jackson, W. M. ; Donn, B. D. (1971) Absorbing ice model of interstellar grains Astronomische Nachrichten, 293 (1-2). pp. 43-48. ISSN 0004-6337

Swamy, K. S. K. (1970) Atmospheres of metal-deficient stars: giant stars Astronomy & Astrophysics, 8 . pp. 375-380. ISSN 0004-6361

Krishna Swamy, K. S. (1970) Atmospheric structure of cool stars with particle opacity The Astrophysical Journal, 162 . pp. 259-264. ISSN 0004-637X

Swamy, K. S. K. (1970) Thermal emission from grains in H II regions Astronomy & Astrophysics, 8 . pp. 358-363. ISSN 0004-6361

Low, F. J. ; Krishna Swamy, K. S. (1970) Narrow-band infrared photometry of α Ori Nature, 227 . pp. 1333-1334. ISSN 0028-0836

Krishna Swamy, K. S. (1970) Impure graphite grains and the interstellar extinction curve Observatory, 90 . pp. 52-54. ISSN 0029-7704

Donn, B. ; Krishna Swamy, K. S. ; Hunter, C. (1970) On the question of interstellar silicate absorption The Astrophysical Journal, 160 . pp. 353-355. ISSN 0004-637X

Krishna Swamy, K. S. (1970) Analysis of the hyades giant stars ε and γ Tau Astrophysics and Space Science, 8 (1). pp. 86-89. ISSN 0004-640X

Krishna Swamy, K. S. (1970) Circumstellar dust model for infrared stars Astrophysics and Space Science, 9 (1). pp. 123-127. ISSN 0004-640X

Krishna Swamy, K. S. (1970) Intensity of the infrared radiation from interstellar grains in the solar neighborhood Astrophysics and Space Science, 6 (3). pp. 474-480. ISSN 0004-640X

Krishna Swamy, K. S. ; Donn, B. (1969) Stability of solid hydrogen coated graphite particles Nature, 224 . pp. 788-789. ISSN 0028-0836

Donn, Bertram ; Krishna Swamy, K. S. (1969) On the question of interstellar diamonds Nature, 224 (5219). p. 570. ISSN 0028-0836

Krishna Swamy, K. S. ; Wickramasinghe, N. C. (1969) Strengths of the fundamental bands of ice and solid hydrogen in composite grains Observatory, 89 . pp. 57-59. ISSN 0029-7704

Krishna Swamy, K. S. (1969) Thermal emission by grains and the free-free emission from planetary nebulae Publications of the Astronomical Society of the Pacific, 81 (479). pp. 154-167. ISSN 0004-6280

Wickramasinghe, N. C. ; Krishna Swamy, K. S. (1969) A spectra feature of grains at 10 microns? Observatory, 89 . pp. 55-57. ISSN 0029-7704

Krishna Swamy, K. S. (1969) Atmospheres of metal-deficient stars: main sequence stars Astronomy & Astrophysics, 1 . p. 297. ISSN 0004-6361

Donn, B. ; Krishna Swamy, K. S. (1969) Extinction by interstellar grains, Mie particles and polycyclic aromatic molecules Physica, 41 (1). pp. 144-150. ISSN 0031-8914

Krishna Swamy, K. S. (1969) Inversion of density in the convective zone Observatory, 89 . pp. 26-27. ISSN 0029-7704

Krishna Swamy, K. S. (1969) Atmospheres of extreme metal-deficient stars Astrophysics and Space Science, 4 (2). pp. 218-232. ISSN 0004-640X

Krishna Swamy, K. S. (1969) Convection in normal stars and metal-deficient stars Astrophysics and Space Science, 3 (4). pp. 552-563. ISSN 0004-640X

Krishna Swamy, K. S. ; Stecher, T. P. (1969) On the formation of planetary nebulae Publications of the Astronomical Society of the Pacific, 81 (483). pp. 873-875. ISSN 0004-6280

Wickramasinghe, N. C. ; Krishna Swamy, K. S. (1969) Solid hydrogen coated graphite particles in the interstellar medium-I Monthly Notices of the Royal Astronomical Society, 144 . pp. 41-54. ISSN 0035-8711

Krishna Swamy, K. S. (1968) Analysis of subdwar HD 25329 The Astrophysical Journal, 154 . pp. 983-986. ISSN 0004-637X

Krishna Swamy, K. S. ; Wickramasinghe, N. C. (1968) Graphite particle model for NML Cygnus Nature, 220 . pp. 896-897. ISSN 0028-0836

Wickramasinghe, N. C. ; Krishna Swamy, K. S. (1968) Comments on the possibility of interstellar quartz grains The Astrophysical Journal, 154 . pp. 397-400. ISSN 0004-637X

Krishna Swamy, K. S. (1968) Line blanketing in stars Publications of the Astronomical Society of the Pacific, 80 (475). pp. 406-409. ISSN 0004-6280

Krishna Swamy, K. S. ; Bertram, Donn (1968) An analysis of the infrared continuum of comets The Astrophysical Journal, 153 . pp. 291-299. ISSN 0004-637X

Krishna Swamy, K. S. (1968) Analysis of the profiles of strong lines in three F and G subdwarfs The Astrophysical Journal, 152 . pp. 477-482. ISSN 0004-637X

Krishna Swamy, K. S. ; Wickramasinghe, N. C. (1968) Interstellar extinction by quartz grains Nature, 217 . pp. 1236-1237. ISSN 0028-0836

Krishna Swamy, K. S. (1968) Comments on the calculated Hγ profiles of Searle and Oke The Astrophysical Journal, 151 . pp. 1195-1197. ISSN 0004-637X

Krishna Swamy, K. S. (1968) Damping constant of Fraunhofer lines Journal of Quantitative Spectroscopy and Radiative Transfer, 8 (2). pp. 855-856. ISSN 0022-4073

Krishna Swamy, K. S. ; O'dell, C. R. (1968) Thermal emission by particles in NGC 7027 The Astrophysical Journal, 151 . L61-L66. ISSN 0004-637X

Krishna Swamy, K. S. ; Wickramasinghe, N. C. (1968) On the temperature of interstellar grains Monthly Notices of the Royal Astronomical Society, 139 . pp. 283-287. ISSN 0035-8711

Krishna Swamy, K. S. (1967) Comparison of the convective model atmospheres of epsilon Eridani and Gmb 1830 The Astrophysical Journal, 150 . pp. 1161-1165. ISSN 0004-637X

Swamy, K. S. K. ; O'Dell, C. R. (1967) Optical radar scattering by interstellar grains The Astronomical Journal, 72 . p. 322. ISSN 0004-6256

Swamy, K. S. K. (1967) A self-consistent empirical model Solar atmosphere The Astronomical Journal, 72 . p. 322. ISSN 0004-6256

Wickramasinghe, N. C. ; Krishna Swamy, K. S. (1967) Unified model for interstellar extinction and polarization Nature, 213 . pp. 895-896. ISSN 0028-0836

Krishna Swamy, K. S. ; EO'dell, C. R. (1967) Distinction between models of interstellar grains The Astrophysical Journal, 147 . pp. 937-942. ISSN 0004-637X

Krishna Swamy, K. S. ; O'dell, C. R. (1967) Photoelectric spectrophotometry of gaseous nebulae IV, interaction of dust, gas and radiation The Astrophysical Journal, 147 . pp. 529-543. ISSN 0004-637X

Krishna Swamy, K. S. (1966) Profiles of strong lines in two hyades F stars The Astrophysical Journal, 146 . pp. 731-737. ISSN 0004-637X

Krishna Swamy, K. S. (1966) Profiles of strong lines in K- dwarfs The Astrophysical Journal, 145 . pp. 174-194. ISSN 0004-637X

Krishna Swamy, K. S. ; Wickramasinghe, N. C. (1966) On the optics of small graphite spheres. II. Monthly Notices of the Royal Astronomical Society, 132 . pp. 193-200. ISSN 0035-8711

Krishna Swamy, K. S. (1965) Grain sizes in HI and HII regions Publications of the Astronomical Society of the Pacific, 77 (456). pp. 164-167. ISSN 0004-6280

Krishna Swamy, K. S. ; Kushwaha, R. S. (1962) Convection zones in stellar atmospheres The Astrophysical Journal, 135 . pp. 802-811. ISSN 0004-637X

Krishna Swamy, K. S. (1961) Adiabatic gradient for ionisable matter and radiation The Astrophysical Journal, 134 . pp. 1017-1019. ISSN 0004-637X

Krishna Swamy, K. S. ; Kushwaha, R. S. (1960) Opacity means and stellar atmospheres Astronomy & Astrophysics, 27 (5). pp. 453-469. ISSN 0004-6361