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Ronald Wilhelm, Ph.D.

    Calculated based on number of publications stored in Pure and citations from Scopus
    1994 …2024

    Research activity per year

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    Search results

    • 2024

      RRLFE: software for generating and applying metallicity calibrations for RR Lyrae variable stars across a wide range of phases and temperatures

      Spalding, E., Wilhelm, R., De Lee, N., Long, S., Beers, T. C., Placco, V. M., Kielkopf, J., Lee, Y. S., Pepper, J. & Carrell, K., Jan 1 2024, In: Monthly Notices of the Royal Astronomical Society. 527, 1, p. 828-845 18 p.

      Research output: Contribution to journalArticlepeer-review

      Open Access
    • 2023

      Modulation of the Blazhko Cycle in LS Her

      Wilhelm, R., Carrell, K., Means, H. H., Popowicz, A., Bernacki, K., Frąckiewicz, M., Szczepański, M., Dustor, A., Lockett, J., Taylor, J. & Youngquist, S., May 1 2023, In: Astronomical Journal. 165, 5, 194.

      Research output: Contribution to journalArticlepeer-review

      Open Access
    • 2022

      SDSS-IV MaStar: Stellar parameter determination with continuum-supplemented full-spectrum fitting

      Lazarz, D., Yan, R., Wilhelm, R., Chen, Y., Hill, L., Holtzman, J. A., Imig, J., Maraston, C., Mészáros, S., Stringfellow, G. S., Thomas, D., Beers, T. C., Bizyaev, D., Drory, N., Lane, R. R. & Nitschelm, C., Dec 1 2022, In: Astronomy and Astrophysics. 668, A21.

      Research output: Contribution to journalArticlepeer-review

      Open Access
    • 2021

      Dynamically tagged groups of very metal-poor halo stars from the HK and Hamburg/ ESO surveys

      Limberg, G., Rossi, S., Beers, T. C., Perottoni, H. D., Pérez-Villegas, A., Santucci, R. M., Abuchaim, Y., Placco, V. M., Lee, Y. S., Christlieb, N., Norris, J. E., Bessell, M. S., Ryan, S. G., Wilhelm, R., Rhee, J. & Frebel, A., Jan 20 2021, In: Astrophysical Journal. 907, 1, 10.

      Research output: Contribution to journalArticlepeer-review

      Open Access
      38 Scopus citations
    • The Changing Lightcurve of the Double-mode RR Lyrae Variable Star V338 Boo

      Carrell, K., Wilhelm, R., Olsen, F., Tom, A., Vetters, G. & McElhannon, A., Aug 1 2021, In: Astrophysical Journal Letters. 916, 2, L12.

      Research output: Contribution to journalArticlepeer-review

      Open Access
      3 Scopus citations
    • 2019

      Creating project-based STEM environments: The REAL way

      Wilhelm, J., Wilhelm, R. & Cole, M., Jan 1 2019, 219 p.

      Research output: Book/ReportBookpeer-review

      11 Scopus citations
    • SDSS-IV MaStar: A Large and Comprehensive Empirical Stellar Spectral Library-First Release

      Yan, R., Chen, Y., Lazarz, D., Bizyaev, D., Maraston, C., Stringfellow, G. S., Mccarthy, K., Meneses-Goytia, S., Law, D. R., Thomas, D., Barroso, J. F., Sánchez-Gallego, J. R., Schlafly, E., Zheng, Z., Argudo-Fernández, M., Beaton, R. L., Beers, T. C., Bershady, M., Blanton, M. R., Brownstein, J., & 28 othersBundy, K., Chambers, K. C., Cherinka, B., Lee, N. D., Drory, N., Galbany, L., Holtzman, J., Imig, J., Kaiser, N., Kinemuchi, K., Liu, C., Luo, A. L., Magnier, E., Majewski, S., Nair, P., Oravetz, A., Oravetz, D., Pan, K., Sobeck, J., Stassun, K., Talbot, M., Tremonti, C., Waters, C., Weijmans, A. M., Wilhelm, R., Zasowski, G., Zhao, G. & Zhao, Y. H., 2019, In: Astrophysical Journal. 883, 2, 175.

      Research output: Contribution to journalArticlepeer-review

      Open Access
      63 Scopus citations
    • 2018

      Young blue straggler stars in the Galactic field

      Ekanayake, G. & Wilhelm, R., Sep 11 2018, In: Monthly Notices of the Royal Astronomical Society. 479, 2, p. 2623-2629 7 p.

      Research output: Contribution to journalArticlepeer-review

      3 Scopus citations
    • 2014

      Characterizing the AB Doradus moving group via high-resolution spectroscopy and kinematic traceback

      McCarthy, K. & Wilhelm, R. J., Oct 1 2014, In: Astronomical Journal. 148, 4, 70.

      Research output: Contribution to journalArticlepeer-review

      17 Scopus citations
    • 2013

      Examining differences between preteen groups spatial-scientific understandings: A quasi-experimental study

      Wilhelm, J., Jackson, C., Sullivan, A. & Wilhelm, R., Sep 3 2013, In: Journal of Educational Research. 106, 5, p. 337-351 15 p.

      Research output: Contribution to journalArticlepeer-review

      13 Scopus citations
    • 2012

      Red clump stars in the Sagittarius tidal streams

      Carrell, K., Wilhelm, R. & Chen, Y., Jul 2012, In: Astronomical Journal. 144, 1, 18.

      Research output: Contribution to journalArticlepeer-review

      6 Scopus citations
    • The case for the dual halo of the Milky Way

      Beers, T. C., Carollo, D., Ivezić, Ẑ., An, D., Chiba, M., Norris, J. E., Freeman, K. C., Lee, Y. S., Munn, J. A., Fiorentin, P. R., Sivarani, T., Wilhelm, R., Yanny, B. & York, D. G., Feb 10 2012, In: Astrophysical Journal. 746, 1, 34.

      Research output: Contribution to journalArticlepeer-review

      Open Access
      157 Scopus citations
    • 2010

      A search for field horizontal-branch stars near the south galactic pole

      Ortiz, R., Wilhelm, R., Costa, R. D. D., Rossi, S. & Beers, T. C., 2010, In: Astronomical Journal. 139, 3, p. 1031-1044 14 p.

      Research output: Contribution to journalArticlepeer-review

      Open Access
      2 Scopus citations
    • The milky way tomography with SDSS. III. Stellar kinematics

      Bond, N. A., Ivezić, Ž., Sesar, B., Jurić, M., Munn, J. A., Kowalski, A., Loebman, S., Roškar, R., Beers, T. C., Dalcanton, J., Rockosi, C. M., Yanny, B., Newberg, H. J., Allende Prieto, C., Wilhelm, R., Lee, Y. S., Sivarani, T., Majewski, S. R., Norris, J. E., Bailer-Jones, C. A. L., & 37 othersFiorentin, P. R., Schlegel, D., Uomoto, A., Lupton, R. H., Knapp, G. R., Gunn, J. E., Covey, K. R., Smith, J. A., Miknaitis, G., Doi, M., Tanaka, M., Fukugita, M., Kent, S., Finkbeiner, D., Quinn, T. R., Hawley, S., Anderson, S., Kiuchi, F., Chen, A., Bushong, J., Sohi, H., Haggard, D., Kimball, A., McGurk, R., Barentine, J., Brewington, H., Harvanek, M., Kleinman, S., Krzesinski, J., Long, D., Nitta, A., Snedden, S., Lee, B., Pier, J. R., Harris, H., Brinkmann, J. & Schneider, D. P., 2010, In: Astrophysical Journal. 716, 1, p. 1-29 29 p.

      Research output: Contribution to journalArticlepeer-review

      Open Access
      172 Scopus citations
    • 2009

      A spectroscopic survey of FHB stars near the south galactic pole

      Rossi, S., Ortiz, R., Wilhelm, R., Costa, R. & Beers, T. C., Aug 2009, In: Proceedings of the International Astronomical Union. 5, S262, p. 422-423 2 p.

      Research output: Contribution to journalArticlepeer-review

      Open Access
    • Proper motions in Kapteyn selected area 103: A preliminary orbit for the virgo stellar stream

      Casetti-Dinescu, D. I., Girard, T. M., Majewski, S. R., Vivas, A. K., Wilhelm, R., Carlin, J. L., Beers, T. C. & Van Altena, W. F., 2009, In: Astrophysical Journal. 701, 1 PART 2, p. L29-L33

      Research output: Contribution to journalArticlepeer-review

      Open Access
      38 Scopus citations
    • SEGUE: A spectroscopic survey of 240,000 stars with g = 14-20

      Yanny, B., Rockosi, C., Newberg, H. J., Knapp, G. R., Adelman-McCarthy, J. K., Alcorn, B., Allam, S., Allende Prieto, C., An, D., Anderson, K. S. J., Anderson, S., Bailer-Jones, C. A. L., Bastian, S., Beers, T. C., Bell, E., Belokurov, V., Bizyaev, D., Blythe, N., Bochanski, J. J., Boroski, W. N., & 88 othersBrinchmann, J., Brinkmann, J., Brewington, H., Carey, L., Cudworth, K. M., Evans, M., Evans, N. W., Gates, E., Gänsicke, B. T., Gillespie, B., Gilmore, G., Gomez-Moran, A. N., Grebel, E. K., Greenwell, J., Gunn, J. E., Jordan, C., Jordan, W., Harding, P., Harris, H., Hendry, J. S., Holder, D., Ivans, I. I., Ivezič, Ž., Jester, S., Johnson, J. A., Kent, S. M., Kleinman, S., Kniazev, A., Krzesinski, J., Kron, R., Kuropatkin, N., Lebedeva, S., Lee, Y. S., Leger, R. F., Lépine, S., Levine, S., Lin, H., Long, D. C., Loomis, C., Lupton, R., Malanushenko, O., Malanushenko, V., Margon, B., Martinez-Delgado, D., McGehee, P., Monet, D., Morrison, H. L., Munn, J. A., Neilsen, E. H., Nitta, A., Norris, J. E., Oravetz, D., Owen, R., Padmanabhan, N., Pan, K., Peterson, R. S., Pier, J. R., Platson, J., Fiorentin, P. R., Richards, G. T., Rix, H. W., Schlegel, D. J., Schneider, D. P., Schreiber, M. R., Schwope, A., Sibley, V., Simmons, A., Snedden, S. A., Smith, J. A., Stark, L., Stauffer, F., Steinmetz, M., Stoughton, C., SubbaRao, M., Szalay, A., Szkody, P., Thakar, A. R., Thirupathi, S., Tucker, D., Uomoto, A., Vanden Berk, D., Vidrih, S., Wadadekar, Y., Watters, S., Wilhelm, R., Wyse, R. F. G., Yarger, J. & Zucker, D., May 2009, In: Astronomical Journal. 137, 5, p. 4377-4399 23 p.

      Research output: Contribution to journalArticlepeer-review

      Open Access
      899 Scopus citations
    • 2008

      An accurate distance to high-velocity cloud Complex C

      Thom, C., Peek, J. E. G., Putman, M. E., Heiles, C., Peek, K. M. G. & Wilhelm, R., Sep 1 2008, In: Astrophysical Journal. 684, 1, p. 364-372 9 p.

      Research output: Contribution to journalArticlepeer-review

      Open Access
      110 Scopus citations
    • Distances to galactic high-velocity clouds. I. Cohen stream, complex GCP, cloud g1

      Wakker, B. P., York, D. G., Wilhelm, R., Barentine, J. C., Richter, P., Beers, T. C., Ivezić, Ž. & Howk, J. C., Jan 1 2008, In: Astrophysical Journal. 672, 1, p. 298-319 22 p.

      Research output: Contribution to journalArticlepeer-review

      Open Access
      149 Scopus citations
    • Revised parameter estimates for the most metal-poor candidates in SDSS-I and SEGUE

      Krugler, J. A., Beers, T. C., Lee, Y. S., Sivarani, T., Marsteller, B., Wilhelm, R., Prieto, C. A., Frebel, A., Norris, J. E., Johnson, J., Ivans, I., Yanny, B., Rockosi, C., Morrison, H., Newberg, H. J. & Knapp, J., 2008, First Stars III. p. 151-153 3 p. (AIP Conference Proceedings; vol. 990).

      Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    • The century survey galactic halo project. III. A complete 4300 DEG 2 survey of blue horizontal branch stars in the metal-weak thick disk and inner halo

      Brown, W. R., Beers, T. C., Wilhelm, R., Prieto, C. A., Geller, M. J., Kenyon, S. J. & Kurtz, M. J., Feb 1 2008, In: Astronomical Journal. 135, 2, p. 564-574 11 p.

      Research output: Contribution to journalArticlepeer-review

      Open Access
      47 Scopus citations
    • The Milky Way's circular velocity curve to 60 kpc and an estimate of the dark matter halo mass from the kinematics of ∼2400 SDSS blue horizontal-branch stars

      Xue, X. X., Rix, H. W., Zhao, G., Re Fiorentin, P., Naab, T., Steinmetz, M., Van Den Bosch, F. C., Beers, T. C., Lee, Y. S., Bell, E. F., Rockosi, C., Yanny, B., Newberg, H., Wilhelm, R., Kang, X., Smith, M. C. & Schneider, D. P., Sep 10 2008, In: Astrophysical Journal. 684, 2, p. 1143-1158 16 p.

      Research output: Contribution to journalArticlepeer-review

      567 Scopus citations
    • The milky way tomography with SDSS. II. stellar metallicity

      Ivezić, Ž., Sesar, B., Jurić, M., Bond, N., Dalcanton, J., Rockosi, C. M., Yanny, B., Newberg, H. J., Beers, T. C., Prieto, C. A., Wilhelm, R., Lee, Y. S., Sivarani, T., Norris, J. E., Bailer-Jones, C. A. L., Fiorentin, P. R. E., Schlegel, D., Uomoto, A., Lupton, R. H., Knapp, G. R., & 33 othersGunn, J. E., Covey, K. R., Smith, J. A., Miknaitis, G., Doi, M., Tanaka, M., Fukugita, M., Kent, S., Finkbeiner, D., Munn, J. A., Pier, J. R., Quinn, T., Hawley, S., Anderson, S., Kiuchi, F., Chen, A., Bushong, J., Sohi, H., Haggard, D., Kimball, A., Barentine, J., Brewington, H., Harvanek, M., Kleinman, S., Krzesinski, J., Long, D., Nitta, A., Snedden, S., Lee, B., Harris, H., Brinkmann, J., Schneider, D. P. & York, D. G., Sep 1 2008, In: Astrophysical Journal. 684, 1, p. 287-325 39 p.

      Research output: Contribution to journalArticlepeer-review

      Open Access
      439 Scopus citations
    • The segue stellar parameter pipeline. I. Description and comparison of individual methods

      Lee, Y. S., Beers, T. C., Sivarani, T., Allende Prieto, C., Koesterke, L., Wilhelm, R., Fiorentin, P. R., Bailer-Jones, C. A. L., Norris, J. E., Rockosi, C. M., Yanny, B., Newberg, H. J., Covey, K. R., Zhang, H. T. & Luo, A. L., Nov 1 2008, In: Astronomical Journal. 136, 5, p. 2022-2049 28 p.

      Research output: Contribution to journalArticlepeer-review

      430 Scopus citations
    • The segue stellar parameter pipeline. II. Validation with galactic globular and open clusters

      Lee, Y. S., Beers, T. C., Sivarani, T., Johnson, J. A., An, D., Wilhelm, R., Allende Prieto, C., Koesterke, L., Fiorentin, P. R., Bailer-Jones, C. A. L., Norris, J. E., Yanny, B., Rockosi, C., Newberg, H. J., Cudworth, K. M. & Pan, K., Nov 1 2008, In: Astronomical Journal. 136, 5, p. 2050-2069 20 p.

      Research output: Contribution to journalArticlepeer-review

      Open Access
      264 Scopus citations
    • The segue stellar parameter pipeline. III. Comparison with high-resolution spectroscopy of SDSS/SEGUE field stars

      Allende Prieto, C., Sivarani, T., Beers, T. C., Lee, Y. S., Koesterke, L., Shetrone, M., Sneden, C., Lambert, D. L., Wilhelm, R., Rockosi, C. M., Lai, D. K., Yanny, B., Ivans, I. I., Johnson, J. A., Aoki, W., Bailer-Jones, C. A. L. & Fiorentin, P. R., Nov 1 2008, In: Astronomical Journal. 136, 5, p. 2070-2082 13 p.

      Research output: Contribution to journalArticlepeer-review

      212 Scopus citations
    • Two stellar components in the halo of the Milky Way (Nature (2007) 450, (1020-1025))

      Carollo, D., Beers, T. C., Lee, Y. S., Chiba, M., Norris, J. E., Wilhelm, R., Sivarani, T., Marsteller, B., Munn, J. A., Bailer-Jones, C. A. L., Fiorentin, P. R. & York, D. G., Jan 10 2008, In: Nature. 451, 7175, p. 216 1 p.

      Research output: Contribution to journalComment/debate

      Open Access
      19 Scopus citations
    • 2007

      A catalog of candidate field horizontal-branch and A-type stars. III. A 2Mass-cleaned version

      Beers, T. C., Almeida, T., Rossi, S., Wilhelm, R. & Marsteller, B., Feb 2007, In: Astrophysical Journal, Supplement Series. 168, 2, p. 277-288 12 p.

      Research output: Contribution to journalArticlepeer-review

      Open Access
      10 Scopus citations
    • A survey of early-type stars based on the two micron all sky survey database

      Ortiz, R., Malacarne, M., Wilhelm, R., Costa, R. D. D., Rossi, S., Maciel, W. J. & Costa, A. F. M., Sep 2007, In: Astronomical Journal. 134, 3, p. 1183-1194 12 p.

      Research output: Contribution to journalReview articlepeer-review

      4 Scopus citations
    • Broadband UBVRCIC photometry of horizontal-branch and metal-poor candidates from the HK and Hamburg/ESQ surveys. I.

      Beers, T. C., Flynn, C., Rossi, S., Sommer-Larsen, J., Wilhelm, R., Marsteller, B., Lee, Y. S., De Lee, N., Krugler, J., Deliyannis, C. P., Simmons, A. T., Mills, E., Zickgraf, F. J., Holmberg, J., Önehag, A., Eriksson, A., Terndrup, D. M., Salim, S., Andersen, J., Nordström, B., & 3 othersChristlieb, N., Frebel, A. & Rhee, J., Jan 2007, In: Astrophysical Journal, Supplement Series. 168, 1, p. 128-139 12 p.

      Research output: Contribution to journalArticlepeer-review

      Open Access
      55 Scopus citations
    • Distances to galactic high-velocity clouds: Complex C

      Wakker, B. P., York, D. G., Howk, J. C., Barentine, J. C., Wilhelm, R., Peletier, R. F., Van Woerden, H., Beers, T. C., Ivezić, Ž., Richter, P. & Schwarz, U. J., 2007, In: Astrophysical Journal. 670, 2 PART 2, p. L113-L116

      Research output: Contribution to journalArticlepeer-review

      Open Access
      129 Scopus citations
    • Estimation of stellar atmospheric parameters from SDSS/SEGUE spectra

      Re Fiorentin, P., Bailer-Jones, C. A. L., Lee, Y. S., Beers, T. C., Sivarani, T., Wilhelm, R., Prieto, C. A. & Norris, J. E., Jun 2007, In: Astronomy and Astrophysics. 467, 3, p. 1373-1387 15 p.

      Research output: Contribution to journalArticlepeer-review

      Open Access
      86 Scopus citations
    • The overdensity in Virgo, Sagittarius debris and, the asymmetric spheroid

      Newberg, H. J., Yanny, B., Cole, N., Beers, T. C., Re Fiorentin, P., Schneider, D. P. & Wilhelm, R., 2007, In: Astrophysical Journal. 668, 1 I, p. 221-235 15 p.

      Research output: Contribution to journalArticlepeer-review

      Open Access
      92 Scopus citations
    • Two stellar components in the halo of the Milky Way

      Carollo, D., Beers, T. C., Lee, Y. S., Chiba, M., Norris, J. E., Wilhelm, R., Sivarani, T., Marsteller, B., Munn, J. A., Bailer-Jones, C. A. L., Fiorentin, P. R. & York, D. G., Dec 13 2007, In: Nature. 450, 7172, p. 1020-1025 6 p.

      Research output: Contribution to journalArticlepeer-review

      495 Scopus citations
    • 2006

      A spectroscopic study of the ancient milky way: F- and G-type stars in the third data release of the Sloan Digital Sky Survey

      Prieto, C. A., Beers, T. C., Wilhelm, R., Newberg, H. J. O., Rockosi, C. M., Yanny, B. & Lee, Y. S., Jan 10 2006, In: Astrophysical Journal. 636, 2 I, p. 804-820 17 p.

      Research output: Contribution to journalArticlepeer-review

      Open Access
      304 Scopus citations
    • Discovery of a tidal stream extending from NGC 5053

      Lauchner, A., Powell, W. L. & Wilhelm, R., Nov 1 2006, In: Astrophysical Journal. 651, 1 II, p. L33-L36

      Research output: Contribution to journalArticlepeer-review

      Open Access
      27 Scopus citations
    • SDSS J103913.70+533029.7: A Super star cluster in the outskirts of a galaxy merger

      Knapp, G. R., Tremonti, C. A., Rockosi, C. M., Schlegel, D. J., Yanny, B., Beers, T. C., Prieto, C. A., Wilhelm, R., Lupton, R. H., Gunn, J. E., Niederste-Ostholt, M., Schneider, D. P., Covey, K., Seth, A., Ivezić, Ž., Eisenstein, D. J., Helmboldt, J., Finkbeiner, D. P., Padmanabhan, N., Kleinman, S. J., & 11 othersLong, D., Snedden, S. A., Nitta, A., Harvanek, M., Krzesinski, J., Brewington, H. J., Barentine, J. C., Newman, P. R., Nielsen, E. H., Fukugita, M. & Brinkmann, J., Feb 2006, In: Astronomical Journal. 131, 2, p. 859-865 7 p.

      Research output: Contribution to journalArticlepeer-review

      Open Access
      4 Scopus citations
    • The galactic nature of high-velocity cloud complex WB

      Thom, C., Putman, M. E., Gibson, B. K., Christlieb, N., Flynn, C., Beers, T. C., Wilhelm, R. & Lee, Y. S., Feb 20 2006, In: Astrophysical Journal. 638, 2 II, p. L97-L100

      Research output: Contribution to journalArticlepeer-review

      Open Access
      58 Scopus citations
    • 2005

      The century survey galactic halo project. II. Global properties and the luminosity function of field blue horizontal branch stars

      Brown, W. R., Geller, M. J., Kenyon, S. J., Kurtz, M. J., Prieto, C. A., Beers, T. C. & Wilhelm, R., Sep 2005, In: Astronomical Journal. 130, 3, p. 1097-1110 14 p.

      Research output: Contribution to journalReview articlepeer-review

      Open Access
      19 Scopus citations
    • The metallicity distribution function of the Halo of the Milky way

      Beers, T. C., Christlieb, N., Norris, J. E., Bessell, M. S., Wilhelm, R., Prieto, C. A., Yanny, B., Rockosi, C., Newberg, H. J., Rossi, S. & Lee, Y. S., 2005, In: Proceedings of the International Astronomical Union. 1, S228, p. 175-184 10 p.

      Research output: Contribution to journalArticlepeer-review

      Open Access
      2 Scopus citations
    • The stellar content of the Hamburg/ESO survey III. Field horizontal-branch stars in the Galaxy

      Christlieb, N., Beers, T. C., Thom, C., Wilhelm, R., Rossi, S., Flynn, C., Wisotzki, L. & Reimers, D., 2005, In: Astronomy and Astrophysics. 431, 1, p. 143-148 6 p.

      Research output: Contribution to journalArticlepeer-review

      Open Access
      21 Scopus citations
    • 2004

      Physical Parameters of SDSS Stars, the Nature of the SDSS ‘Ring around the Galaxy’, and the SEGUE Project

      Beers, T. C., Prieto, C. A., Wilhelm, R., Yanny, B. & Newbergg, H., 2004, In: Publications of the Astronomical Society of Australia. 21, 2, p. 207-211 5 p.

      Research output: Contribution to journalArticlepeer-review

      Open Access
      14 Scopus citations
    • 2003

      The century survey galactic halo project. I. Stellar spectral analysis

      Brown, W. R., Allende Prieto, C., Beers, T. C., Wilhelm, R., Geller, M. J., Kenyon, S. J. & Kurtz, M. J., Sep 2003, In: Astronomical Journal. 126, 3 1773, p. 1362-1380 19 p.

      Research output: Contribution to journalArticlepeer-review

      23 Scopus citations
    • 2002

      BV photometry of variable stars in the northeast arm of the small magellanic cloud

      Sharpee, B., Stark, M., Pritzl, B., Smith, H., Silbermann, N., Wilhelm, R. & Walker, A., Jun 2002, In: Astronomical Journal. 123, 6 1758, p. 3216-3254 39 p.

      Research output: Contribution to journalArticlepeer-review

      Open Access
      18 Scopus citations
    • Erratum: BV photometry of variable stars in the northeast arm of the small magellanic cloud (Astronomical Journal (2002) 123, (3216))

      Sharpee, B., Stark, M., Pritzl, B., Smith, H., Silbermann, N., Wilhelm, R. & Walker, A., Oct 2002, In: Astronomical Journal. 124, 4 1762, p. 2341-2342 2 p.

      Research output: Contribution to journalComment/debate

      Open Access
      1 Scopus citations
    • 2001

      Metallicity estimates for A-, F-, and G-type stars from the Edinburgh-Cape Blue Object Survey

      Beers, T. C., Rossi, S., O'Donoghue, D., Kilkenny, D., Stobie, R. S., Koen, C. & Wilhelm, R., Feb 1 2001, In: Monthly Notices of the Royal Astronomical Society. 320, 4, p. 451-464 14 p.

      Research output: Contribution to journalArticlepeer-review

      Open Access
      9 Scopus citations
    • 2000

      CU COMAE: A new field double-mode RR Lyrae variable, the most metal-poor discovered to date

      Clementini, G., Tomaso, S. D., Fabrizio, L. D., Bragaglia, A., Merighi, R., Tosi, M., Carretta, E., Gratton, R. G., Ivans, I. I., Kinard, A., Marconi, M., Smith, H. A., Wilhelm, R., Woodruff, T. & Sneden, C., Oct 2000, In: Astronomical Journal. 120, 4, p. 2054-2064 11 p.

      Research output: Contribution to journalArticlepeer-review

      Open Access
      66 Scopus citations
    • 1999

      Spectroscopy of hot stars in the galactic halo. II. The identification and classification of horizontal-branch and other A-type stars

      Wilhelm, R., Beers, T. C. & Gray, R. O., May 1999, In: Astronomical Journal. 117, 5, p. 2308-2328 21 p.

      Research output: Contribution to journalArticlepeer-review

      86 Scopus citations
    • Spectroscopy of hot stars in the galactic halo. III. Analysis of a large sample of field horizontal-branch and other A-type stars

      Wilhelm, R., Beers, T. C., Sommer-Larsen, J., Pier, J. R., Layden, A. C., Flynn, C., Rossi, S. & Christensen, P. R., May 1999, In: Astronomical Journal. 117, 5, p. 2329-2380 52 p.

      Research output: Contribution to journalArticlepeer-review

      46 Scopus citations
    • 1997

      Steps toward determination of the size and structure of the broad-line region in active galactic nuclei. X. Variability of fairall 9 from optical data

      Santos-Lleó, M., Chatzichristou, E., Mendes De Ollveira, C., Winge, C., Alloin, D., Peterson, B. M., Rodriguez-Pascual, P. M., Stirpe, G. M., Beers, T., Bragaglia, A., Claeskens, J. F., Federspiel, M., Giannuzzo, E., Gregorio-Hetem, J., Mathys, G., Salamanca, I., Stein, P., Stenholm, B., Wilhelm, R., Zanin, C., & 20 othersAlbrecht, P., Calderon, J., Caretta, C. A., Carranza, G., Da Costa, R. D. D., Diaz, R., Dietrich, M., Dottori, H., Elizalde, F., Goldes, G., Ghosh, K. K., Maia, M. A. G., Paolantonio, S., Rodrigues De Oliveira Filho, I., Rodriguez-Ardila, A., Schmitt, H. R., Soundararajaperumal, S., De Souza, R. E., Willmer, C. N. A. & Zheng, W., Oct 1997, In: Astrophysical Journal, Supplement Series. 112, 2, p. 271-283 13 p.

      Research output: Contribution to journalArticlepeer-review

      48 Scopus citations
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