Vote for your favorite mineral in #MinCup25! - Pectolite vs. Haüyne
It's a pair of striking blue beauties as #pectolite the uncrushable faces off against #hauyne, the phoenix from volcanic ashes!
Log InRegister
Quick Links : The Mindat ManualThe Rock H. Currier Digital LibraryMindat Newsletter [Free Download]
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsThe Rock H. Currier Digital LibraryGeologic Time
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsClubs & OrganizationsMineral Shows & EventsThe Mindat DirectoryDevice SettingsThe Mineral Quiz
Photo SearchPhoto GalleriesSearch by ColorNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Helfer, H. L. (1979) Three-level models of chemical evolution. The Astrophysical Journal, 229. 265pp. doi:10.1086/156951

Advanced
   -   Only viewable:
Reference TypeJournal (article/letter/editorial)
TitleThree-level models of chemical evolution
JournalThe Astrophysical Journal
AuthorsHelfer, H. L.Author
Year1979 (April)Volume229
PublisherIOP Publishing
DOIdoi:10.1086/156951Search in ResearchGate
Generate Citation Formats
Mindat Ref. ID3313176Long-form Identifiermindat:1:5:3313176:4
GUID0
Full ReferenceHelfer, H. L. (1979) Three-level models of chemical evolution. The Astrophysical Journal, 229. 265pp. doi:10.1086/156951
Plain TextHelfer, H. L. (1979) Three-level models of chemical evolution. The Astrophysical Journal, 229. 265pp. doi:10.1086/156951
In(1979) The Astrophysical Journal Vol. 229. IOP Publishing

See Also

These are possibly similar items as determined by title/reference text matching only.

Brin, G. D. (1980) Three models of dust layers on cometary nuclei. The Astrophysical Journal, 237. 265pp. doi:10.1086/157866
Bahcall, John N. (1972) Models for the Cosmic Evolution of Radio Galaxies and Quasars. The Astrophysical Journal, 172. 265pp. doi:10.1086/151345
Helfer, H. L., Wallerstein, G., Greenstein, J. L. (1963) Metal Abundances in the Subgiant ζ Herculis and Three Other DG Stars. The Astrophysical Journal, 138. 97pp. doi:10.1086/147621
Lubow, S. H., Shu, F. H. (1979) On the structure of contact binaries. IV - High-mass models. The Astrophysical Journal, 229. 657pp. doi:10.1086/156999
Arp, H., Sulentic, J. W. (1979) Three quasars near the spiral arms of NGC 1073. The Astrophysical Journal, 229. 496pp. doi:10.1086/156981
Tinsley, B. M. (1979) Stellar lifetimes and abundance ratios in chemical evolution. The Astrophysical Journal, 229. 1046pp. doi:10.1086/157039
Collins, T. J. B., Helfer, H. L., Van Horn, H. M. (1998) Accretion Disk and Boundary Layer Models Incorporating Opal Opacities. The Astrophysical Journal, 502 (2). 730-736 doi:10.1086/305949
Helfer, H. L., Tatel, H. E. (1955) Preliminary 21-CM Meridian Plane Surveys. The Astrophysical Journal, 121. 585pp. doi:10.1086/146024
Helfer, H. L., Tatel, H. E. (1959) A 21-CM Survey around the Pleiades. The Astrophysical Journal, 129. 565pp. doi:10.1086/146655
Helfer, H. L., Savedoff, M. P. (1984) On the bizarre gamma-ray spectrum of SS 433. The Astrophysical Journal, 283. doi:10.1086/184331
Helfer, H. L., Savedoff, M. P. (1986) On the dust jet model of SS 433. The Astrophysical Journal, 304. 581pp. doi:10.1086/164193
 
and/or  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2025, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: September 17, 2025 01:41:55
Go to top of page