Spectroscopy Research

“If a Picture is worth a thousand words, a Spectrum is worth a thousand Pictures!”

astronomical sage


Publications and Articles

Link to My Astrophysical Publications (from the Harvard/ADS Astrophysics Server)


Useful Links for Learning Spectroscopy 

My Astronomy 125 course from Pomona College – an advanced undergraduate seminar on the astrophysics of the Milky Way and interstellar medium

Andrew Pontzen’s DLA simulation program

Andrew Pontzen’s DLA simulation Movie – animating the life of photons as they leave quasars and are absorbed by intervening clouds of intergalactic gas (creating DLA systems and the Lyman alpha forest). – http://www.cosmocrunch.co.uk/media/dla_credited.mov

Yuan-Sen Ting’s set of simulations for line formation in interstellar lines – allows interactive exploration of the curve of growth for various species:


Yuan-Sen Ting’s simulation for the Lyman Alpha forest – to show how the Lyman-alpha and Lyman-beta lines are created in a quasar absorption line:


My Online Spectroscopy Tutorials – Describing use of various astronomical software for spectral analysis

Spectral Classification of Stars Tutorial – (SWF file) – (HTML)

Making all-sky images with Skyview Tutorial – (SWF file) – (HTML)

Using Specview for Spectroscopic Analysis – (SWF file) – (HTML)

Using SPLAT for Spectroscopic Analysis – (SWF file) – (HTML)

Using SLAT-VO for Spectroscopic Analysis – (SWF file) – (HTML)

Keck Observing Runs – HIRES data and analysis

http://bishop.astro.pomona.edu/penprase/HEGER/ – simple nucleosynthesis model to determine elemental abundances of absorption lines, assuming a simple IMF and nucleosynthetic yields.

http://bishop.astro.pomona.edu/penprase/QSO/NEWEST/ – Caltech HIRES DLA system database; incorporates data from about 20 years of Keck spectroscopy into integrated database of element abundances.

http://bishop.astro.pomona.edu/penprase/OVIWEB/OVISPECS/ – OVI spectral absorption from Keck telescope data; attempt to constrain hot IGM toward intermediate redshift quasars.

http://bishop.astro.pomona.edu/penprase/keck2011/ – observing run charts for Keck HIRES observing in October 2011.

http://bishop.astro.pomona.edu/penprase/keck2011DLAs_ver2/ – a second version of the observing run prep page.

Keck Observing Runs – ESI data and analysis

http://bishop.astro.pomona.edu/penprase/KECKESI/REDUX/ – Keck Telescope ESI spectra for low-metallicity DLA sample.

http://bishop.astro.pomona.edu/penprase/ESI2011/ – ESI reduction pipeline results from Keck observing run in 2011.

http://bishop.astro.pomona.edu/penprase/FSPEC2/ – ESI reduction pipeline results from Keck observing run in 2007.

http://bishop.astro.pomona.edu/penprase/JFUSE/ – Some old FUSE results for sample of local IS clouds.

Other interesting and Useful Links for Galactic ISM and Spectroscopy Research


Other Programs and Routines of interest for Astronomical Image Processing

http://specpro.caltech.edu/ms.pdf – An IDL spectroscopy analysis program from Peter Capak at Caltech

http://spectro.princeton.edu/ – Princeton SDSS spectroscopy site

http://www-astro.physics.ox.ac.uk/~mxc/software/ – Some interesting routines for astronomical image analysis

https://physics.ucf.edu/~jh/ast/software/optspecextr-0.3.1/doc/ – Optical Spectrum Extraction program in IDL from Cornell

http://www.astrobetter.com/blog/2009/10/02/spectral-line-analysis-tools/ – Rundown of some spectroscopy tools from astrobetter.com