# Barbara Ryden

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American astrophysicist

Barbara Sue Ryden Alma mater Northwestern University Princeton University Scientific career Institutions Ohio State University Canadian Institute for Theoretical Astrophysics Center for Astrophysics | Harvard & Smithsonian Thesis Galaxy Formation by Gravitational Collapse in a Universe Dominated by Cold Dark Matter (1987) Doctoral advisor James Gunn

**Barbara Sue Ryden** is an American astrophysicist who is a Professor of Astronomy at [Ohio State University](/source/Ohio_State_University). Her research considers the formation, shape and structure of galaxies. She was elected a fellow of the [American Association for the Advancement of Science](/source/American_Association_for_the_Advancement_of_Science) in 2016.

## Early life and education

Ryden studied physics and integrated sciences at [Northwestern University](/source/Northwestern_University).[1] She then went to [Princeton University](/source/Princeton_University) as a doctoral student, where she worked alongside [James Gunn](/source/James_Gunn_(astronomer)) as her advisor.[2] She was then a postdoctoral research fellow at the [Center for Astrophysics | Harvard & Smithsonian](/source/Harvard-Smithsonian_Center_for_Astrophysics)[3] and [Canadian Institute for Theoretical Astrophysics](/source/Canadian_Institute_for_Theoretical_Astrophysics).[4]

## Research and career

A member of the [Ohio State University](/source/Ohio_State_University) faculty since 1992, Prof. Ryden studies the formation, alignment, and shapes of galaxies, and the large-scale structure of the universe, and cosmology, including tests for dark energy, dark matter, and the properties of the primordial density fluctuations. She is internationally known for her textbook *Introduction to Cosmology*,[5] which won the first [Chambliss Astronomical Writing Award](/source/Chambliss_Astronomical_Writing_Award)[6] in 2006 from the [American Astronomical Society](/source/American_Astronomical_Society), and is now in its second edition, and she co-authored *Foundations of Astrophysics*[7] with Prof. Bradley Peterson, a beginning-level text in astrophysics for astronomy majors. She currently editor in chief of the *Ohio State Astrophysics Series*, a series of graduate level textbooks now in contract with [Cambridge University Press](/source/Cambridge_University_Press). The first two volumes are *Interstellar & Intergalactic Medium*[8] by Prof. Ryden and Prof. Richard Pogge (2021) and *Stellar Structure & Evolution*[9] by Prof. Marc Pinsonneault and Prof. Ryden (2022).[10]

## Awards and honors

- 2016 Elected Fellow of the [American Association for the Advancement of Science](/source/American_Association_for_the_Advancement_of_Science)[11]

- 2006 [American Astronomical Society](/source/American_Astronomical_Society) [Chambliss Astronomical Writing Award](/source/Chambliss_Astronomical_Writing_Award) for her book *Introduction to Cosmology*[6][12]

- 1993-1998 [National Science Foundation](/source/National_Science_Foundation) National Young Investigators Award[13]

- 1990-1991 Summer Program for Young Investigators in Cosmology

- 1986-1987 Jacobus Honorary Fellow, [Princeton University](/source/Princeton_University)

- 1983-1986 [National Science Foundation Graduate Fellow](/source/National_Science_Foundation_Graduate_Fellowship)

- 1982 [Phi Beta Kappa](/source/Phi_Beta_Kappa)

## Selected publications

[Scholia](https://www.wikidata.org/wiki/Wikidata:Scholia) has an *author* profile for ***[Barbara Ryden](https://iw.toolforge.org/scholia/author/Q74415238)***.

- Barbara S. Ryden; [James E. Gunn](/source/James_Gunn_(astronomer)) (July 1987). "Galaxy formation by gravitational collapse". *[The Astrophysical Journal](/source/The_Astrophysical_Journal)*. **318**: 15. [Bibcode](/source/Bibcode_(identifier)):[1987ApJ...318...15R](https://ui.adsabs.harvard.edu/abs/1987ApJ...318...15R). [doi](/source/Doi_(identifier)):[10.1086/165349](https://doi.org/10.1086%2F165349). [ISSN](/source/ISSN_(identifier)) [0004-637X](https://search.worldcat.org/issn/0004-637X). [Wikidata](/source/WDQ_(identifier)) [Q105030634](https://www.wikidata.org/wiki/Q105030634).

- [William H. Press](/source/William_H._Press); Barbara S. Ryden; [David N. Spergel](/source/David_Spergel) (December 1989). "Dynamical evolution of domain walls in an expanding universe". *[The Astrophysical Journal](/source/The_Astrophysical_Journal)*. **347**: 590. [Bibcode](/source/Bibcode_(identifier)):[1989ApJ...347..590P](https://ui.adsabs.harvard.edu/abs/1989ApJ...347..590P). [doi](/source/Doi_(identifier)):[10.1086/168151](https://doi.org/10.1086%2F168151). [ISSN](/source/ISSN_(identifier)) [0004-637X](https://search.worldcat.org/issn/0004-637X). [Wikidata](/source/WDQ_(identifier)) [Q105030622](https://www.wikidata.org/wiki/Q105030622).

- [Press WH](/source/William_H._Press); Barbara Ryden; [Spergel DN](/source/David_Spergel) (1 March 1990). "Single mechanism for generating large-scale structure and providing dark missing matter". *[Physical Review Letters](/source/Physical_Review_Letters)*. **64** (10): 1084–1087. [Bibcode](/source/Bibcode_(identifier)):[1990PhRvL..64.1084P](https://ui.adsabs.harvard.edu/abs/1990PhRvL..64.1084P). [doi](/source/Doi_(identifier)):[10.1103/PHYSREVLETT.64.1084](https://doi.org/10.1103%2FPHYSREVLETT.64.1084). [ISSN](/source/ISSN_(identifier)) [0031-9007](https://search.worldcat.org/issn/0031-9007). [PMID](/source/PMID_(identifier)) [10041295](https://pubmed.ncbi.nlm.nih.gov/10041295). [Wikidata](/source/WDQ_(identifier)) [Q74499882](https://www.wikidata.org/wiki/Q74499882).

- Unterborn, C. T., & Ryden, B. S. (2008). "Inclination‐dependent extinction effects in disk galaxies in the sloan digital sky survey". *The Astrophysical Journal*, *687*(2), 976–985. https://doi.org/10.1086/591898[14]

### Books

- *Introduction to Cosmology*. Barbara Ryden, 2003, San Francisco: Addison Wesley. [ISBN](/source/ISBN_(identifier)) [978-0-8053-8912-8](https://en.wikipedia.org/wiki/Special:BookSources/978-0-8053-8912-8)[5]

- *Uchuron Nyumon*. Barbara Ryden, 2003, translated by Nobuyoshi Makino. Tokyo: Pearson Education Japan. [ISBN](/source/ISBN_(identifier)) [978-4-89471-443-4](https://en.wikipedia.org/wiki/Special:BookSources/978-4-89471-443-4)[15]

- *Foundations of Astrophysics*. Barbara Ryden & Bradley M. Peterson, 2010, San Francisco: Addison Wesley. [ISBN](/source/ISBN_(identifier)) [978-0-321-59558-4](https://en.wikipedia.org/wiki/Special:BookSources/978-0-321-59558-4)[7]

- *Foundations of Astrophysics, International Edition*. Barbara Ryden & Bradley M. Peterson, 2011, Upper Saddle River, NJ: Pearson Education. [ISBN](/source/ISBN_(identifier)) [978-0-321-74805-8](https://en.wikipedia.org/wiki/Special:BookSources/978-0-321-74805-8)[16]

- *Introduction to Cosmology, International Edition*. Barbara Ryden, 2014, Harlow, Essex, England: Pearson Education Limited. [ISBN](/source/ISBN_(identifier)) [978-1-292-03971-8](https://en.wikipedia.org/wiki/Special:BookSources/978-1-292-03971-8)[17]

- *Interstellar and Intergalactic Medium [eBook]*. Barbara Ryden & Richard Pogge, 2015, The Ohio State University. [ISBN](/source/ISBN_(identifier)) [978-1-941602-02-7](https://en.wikipedia.org/wiki/Special:BookSources/978-1-941602-02-7)[18]

- *Dynamics [eBook]*. Barbara Ryden, 2016, The Ohio State University. [ISBN](/source/ISBN_(identifier)) [978-1-941602-04-1](https://en.wikipedia.org/wiki/Special:BookSources/978-1-941602-04-1)[19]

- *Introduction to Cosmology, Second Edition*. Barbara Ryden, 2017, Cambridge, England: Cambridge University Press. [ISBN](/source/ISBN_(identifier)) [978-1-107-15483-4](https://en.wikipedia.org/wiki/Special:BookSources/978-1-107-15483-4)[20]

- *Introduction to Cosmology*, Chinese Edition. Barbara Ryden, 2019, Beijing: Peking University Press. [ISBN](/source/ISBN_(identifier)) [978-7-301-30788-5](https://en.wikipedia.org/wiki/Special:BookSources/978-7-301-30788-5)[21]

- *Foundations of Astrophysics [reprint]*. Barbara Ryden & Bradley M. Peterson, 2021, Cambridge, England: Cambridge University Press. [ISBN](/source/ISBN_(identifier)) [978-1-108-83195-6](https://en.wikipedia.org/wiki/Special:BookSources/978-1-108-83195-6)[22]

- *Interstellar and Intergalactic Medium*. Barbara Ryden & Richard Pogge, 2021, Cambridge, England: Cambridge University Press. [ISBN](/source/ISBN_(identifier)) [978-1-108-74877-3](https://en.wikipedia.org/wiki/Special:BookSources/978-1-108-74877-3)[8]

- *Uchuron Nyumon, Second Edition*. Barbara Ryden, 2022, translated by Nobuyoshi Makino. Tokyo: Morikita Publishing. [ISBN](/source/ISBN_(identifier)) [978-4-627-15762-0](https://en.wikipedia.org/wiki/Special:BookSources/978-4-627-15762-0)[23]

- *Stellar Structure and Evolution*. Marc Pinsonneault & Barbara Ryden, 2023, Cambridge, England: Cambridge University Press. [ISBN](/source/ISBN_(identifier)) [978-1-108-79882-2](https://en.wikipedia.org/wiki/Special:BookSources/978-1-108-79882-2)[9]

- *Celestial and Stellar Dynamics*. Barbara Ryden, 2025, Cambridge, England: Cambridge University Press [ISBN](/source/ISBN_(identifier)) [978-1-108-81901-5](https://en.wikipedia.org/wiki/Special:BookSources/978-1-108-81901-5)[24]

- *Astrophysical Gas Dynamics*. Barbara Ryden, 2026, Cambridge, England: Cambridge University Press, in preparation. [ISBN](/source/ISBN_(identifier)) [978-1-108-81915-2](https://en.wikipedia.org/wiki/Special:BookSources/978-1-108-81915-2)[25]

## References

1. **[^](#cite_ref-1)** ["Inspire"](https://inspirehep.net/authors/990858). *inspirehep.net*. Retrieved 2021-01-22.

1. **[^](#cite_ref-2)** Barbara Sue Ryden (1987), [*Galaxy formation by gravitational collapse in a universe dominated by cold dark matter*](https://catalog.princeton.edu/catalog/373875), [Bibcode](/source/Bibcode_(identifier)):[1987PhDT.........2R](https://ui.adsabs.harvard.edu/abs/1987PhDT.........2R), [OCLC](/source/OCLC_(identifier)) [946084398](https://search.worldcat.org/oclc/946084398), [Wikidata](/source/WDQ_(identifier)) [Q105201377](https://www.wikidata.org/wiki/Q105201377)

1. **[^](#cite_ref-l207_3-0)** ["Past & Present Center for Astrophysics Fellows"](https://www.cfa.harvard.edu/opportunities/fellowships-visiting-scientist-positions/cfa-fellowship/past-present-cfa-fellows). *Harvard & Smithsonian*. Retrieved 2024-07-21.

1. **[^](#cite_ref-e492_4-0)** ["Public Lecture: The Dark Side of the Universe"](https://astronomy.osu.edu/events/public-lecture-dark-side-universe). *The Ohio State University Department of Astronomy*. 2017-04-20. Retrieved 2024-07-21.

1. ^ [***a***](#cite_ref-:0_5-0) [***b***](#cite_ref-:0_5-1) Ryden, Barbara (2003). *Introduction to Cosmology*. San Francisco: Addison-Wesley. [ISBN](/source/ISBN_(identifier)) [978-0-8053-8912-8](https://en.wikipedia.org/wiki/Special:BookSources/978-0-8053-8912-8).

1. ^ [***a***](#cite_ref-:1_6-0) [***b***](#cite_ref-:1_6-1) ["Chambliss Astronomical Writing Award | American Astronomical Society"](https://aas.org/grants-and-prizes/chambliss-astronomical-writing-award). *aas.org*. Retrieved 2021-01-22.

1. ^ [***a***](#cite_ref-:2_7-0) [***b***](#cite_ref-:2_7-1) Ryden, Barbara; Peterson, Bradley M. (2010). *Foundations of Astrophysics*. San Francisco: Addison-Wesley. [ISBN](/source/ISBN_(identifier)) [978-0-321-59558-4](https://en.wikipedia.org/wiki/Special:BookSources/978-0-321-59558-4).

1. ^ [***a***](#cite_ref-:3_8-0) [***b***](#cite_ref-:3_8-1) Ryden, Barbara; Pogge, Richard William (2021). *Interstellar and intergalactic medium*. The Ohio state astrophysics series. Cambridge: Cambridge university press. [ISBN](/source/ISBN_(identifier)) [978-1-108-74877-3](https://en.wikipedia.org/wiki/Special:BookSources/978-1-108-74877-3).

1. ^ [***a***](#cite_ref-:4_9-0) [***b***](#cite_ref-:4_9-1) Pinsonneault, Marc H.; Ryden, Barbara (2023). *Stellar structure and evolution*. The Ohio state astrophysics series. Cambridge: Cambridge university press. [ISBN](/source/ISBN_(identifier)) [978-1-108-79882-2](https://en.wikipedia.org/wiki/Special:BookSources/978-1-108-79882-2).

1. **[^](#cite_ref-10)** ["Barbara Ryden"](https://astronomy.osu.edu/people/ryden.1). *astronomy.osu.edu*. Retrieved 2021-01-22.

1. **[^](#cite_ref-11)** ["2016 Fellows | American Association for the Advancement of Science"](https://www.aaas.org/fellows/2016). *www.aaas.org*. Retrieved 2021-01-22.

1. **[^](#cite_ref-12)** ["Barbara Ryden"](https://astronomy.osu.edu/people/ryden.1). *astronomy.osu.edu*. Retrieved 2022-10-01.

1. **[^](#cite_ref-13)** ["3 Young Researchers Receive National Award"](https://news.osu.edu/3-young-researchers-receive-national-award/). *3 Young Researchers Receive National Award*. Retrieved 2021-01-22.

1. **[^](#cite_ref-14)** Unterborn, Cayman T.; Ryden, Barbara S. (2008-11-10). ["Inclination‐Dependent Extinction Effects in Disk Galaxies in the Sloan Digital Sky Survey"](https://iopscience.iop.org/article/10.1086/591898). *The Astrophysical Journal*. **687** (2): 976–985. [arXiv](/source/ArXiv_(identifier)):[0801.2400](https://arxiv.org/abs/0801.2400). [doi](/source/Doi_(identifier)):[10.1086/591898](https://doi.org/10.1086%2F591898). [ISSN](/source/ISSN_(identifier)) [0004-637X](https://search.worldcat.org/issn/0004-637X).

1. **[^](#cite_ref-15)** Ryden, Barbara (2003). *Uchuron Nyumon* [*Introduction to Cosmology*] (in Japanese). Translated by Makino, Nobuyoshi. Tokyo: Pearson Education Japan. [ISBN](/source/ISBN_(identifier)) [978-4894714434](https://en.wikipedia.org/wiki/Special:BookSources/978-4894714434).

1. **[^](#cite_ref-16)** Ryden, Barbara Sue; Peterson, Bradley M. (2011). *Foundations of astrophysics* (International ed.). San Francisco Munich: Addison-Wesley Pearson. [ISBN](/source/ISBN_(identifier)) [978-0-321-74805-8](https://en.wikipedia.org/wiki/Special:BookSources/978-0-321-74805-8).

1. **[^](#cite_ref-17)** Ryden, Barbara (2014). *Introduction to Cosmology, International Edition* (International ed.). Essex, England: Pearson Education Limited. [ISBN](/source/ISBN_(identifier)) [978-1292039718](https://en.wikipedia.org/wiki/Special:BookSources/978-1292039718).

1. **[^](#cite_ref-18)** Ryden, Barbara; Pogge, Richard (2015). *Interstellar and Intergalactic Medium [eBook]*. The Ohio State University. [ISBN](/source/ISBN_(identifier)) [978-1941602027](https://en.wikipedia.org/wiki/Special:BookSources/978-1941602027).

1. **[^](#cite_ref-19)** Ryden, Barbara (2016). *Dynamics [eBook]*. The Ohio State University. [ISBN](/source/ISBN_(identifier)) [978-1941602041](https://en.wikipedia.org/wiki/Special:BookSources/978-1941602041).

1. **[^](#cite_ref-20)** Ryden, Barbara (2017). *Introduction to cosmology* (Second ed.). New York, NY: Cambridge University Press. [ISBN](/source/ISBN_(identifier)) [978-1-107-15483-4](https://en.wikipedia.org/wiki/Special:BookSources/978-1-107-15483-4).

1. **[^](#cite_ref-21)** Ryden, Barbara (2019). *Introduction to Cosmology, Chinese Edition* (in Chinese) (Chinese ed.). Beijing: Pecking University Press. [ISBN](/source/ISBN_(identifier)) [978-7301307885](https://en.wikipedia.org/wiki/Special:BookSources/978-7301307885).

1. **[^](#cite_ref-22)** Ryden, Barbara; Peterson, Bradley M. (2021). *Foundations of astrophysics*. Cambridge: Cambridge University Press. [ISBN](/source/ISBN_(identifier)) [978-1-108-83195-6](https://en.wikipedia.org/wiki/Special:BookSources/978-1-108-83195-6).

1. **[^](#cite_ref-23)** Ryden, Barbara (2022). *Uchuron Nyumon, Second Edition* [*Introduction to Cosmology, Second Edition*] (in Japanese). Translated by Makino, Nobuyoshi (2nd ed.). Tokyo: Morikita Publishing. [ISBN](/source/ISBN_(identifier)) [978-4627157620](https://en.wikipedia.org/wiki/Special:BookSources/978-4627157620).

1. **[^](#cite_ref-24)** Ryden, Barbara (2025). *Celestial and stellar dynamics*. Cambridge, United Kingdom ; New York, NY: Cambridge University Press. [ISBN](/source/ISBN_(identifier)) [978-1-108-87101-3](https://en.wikipedia.org/wiki/Special:BookSources/978-1-108-87101-3).

1. **[^](#cite_ref-25)** Ryden, Barbara (2026). *Astrophysical Gas Dynamics*. Cambridge, England: Cambridge University Press. [ISBN](/source/ISBN_(identifier)) [978-1108819152](https://en.wikipedia.org/wiki/Special:BookSources/978-1108819152).

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Adapted from the Wikipedia article [Barbara Ryden](https://en.wikipedia.org/wiki/Barbara_Ryden) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Barbara_Ryden?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.