You are not currently logged in.

Access your personal account or get JSTOR access through your library or other institution:


Log in to your personal account or through your institution.

ROBOSPECT: Automated Equivalent Width Measurement

Christopher Z. Waters and Julie K. Hollek
Publications of the Astronomical Society of the Pacific
Vol. 125, No. 931 (September 2013), pp. 1164-1178
DOI: 10.1086/673311
Stable URL:
Page Count: 15
Subjects: Astronomy
Find more content in these subjects: Astronomy
  • Download PDF
  • Add to My Lists
  • Cite this Item
We're having trouble loading this content. Download PDF instead.


AbstractWe present ROBOSPECT, a new code to automatically measure and deblend line equivalent widths for both absorption and emission spectra. We test the accuracy of these measurements against simulated spectra as well as manual equivalent width measurements of five stellar spectra over a range of signal-to-noise values and a set of long slit emission spectra. We find that ROBOSPECT accurately matches both the synthetic and manual measurements, with scatter consistent with the expectations based on the data quality and the results of Cayrel.

Notes and References

This item contains 18 references.

  • ['Cayrel, R. 1988, in IAU Symp. 132, The Impact of Very High S/N Spectroscopy on Stellar Physics, ed. G. Cayrel de Strobel, & M. Spite (Dordrecht: Kluwer), 345']
  • ['Cayrel, R., Depagne, E., Spite, M., et al. 2004, A&A, 416, 1117']
  • ['François, P., Depagne, E., Hill, V., et al. 2003, A&A, 403, 1105']
  • ['Fulbright, J. P. 2000, AJ, 120, 1841']
  • ['Harris, D. L., III. 1948, ApJ, 108, 112']
  • ['Hollek, J. K., Frebel, A., Roederer, I. U., et al. 2011, ApJ, 742, 54']
  • ['Lee, Y. S., Beers, T. C., Sivarani, T., et al. 2008, AJ, 136, 2022']
  • ['Lemasle, B., François, P., Bono, G., et al. 2007, A&A, 467, 283']
  • ['Ludwig, R. R., Greene, J. E., Barth, A. J., & Ho, L. C. 2012, ApJ, 756, 51']
  • ['Pellegrini, E. W., Baldwin, J. A., & Ferland, G. J. 2010, ApJS, 191, 160']
  • ['Roederer, I. U., & Lawler, J. E. 2012, ApJ, 750, 76']
  • ['Shetrone, M., Cornell, M. E., Fowler, J. R., et al. 2007, PASP, 119, 556']
  • ['Sterling, N. C., Dinerstein, H. L., Bowers, C. W., & Redfield, S. 2005, ApJ, 625, 368']
  • ['Stetson, P. B., & Pancino, E. 2008, PASP, 120, 1332']
  • ['Tull, R. G. 1998, Proc. SPIE, 3355, 387']
  • ['Wallace, L., Hinkle, K. H., Livingston, W. C., Davis, S. P. 2011, ApJS, 195, 6']
  • ['Yanny, B., Rockosi, C., Newberg, H. J., et al. 2009, AJ, 137, 4377']
  • ['York, D. G., Adelman, J., Anderson, J. E., Jr., et al. 2000, AJ, 120, 1579']