Professional Education


  • Doctor of Philosophy, University of California Berkeley (2018)
  • Bachelor of Arts, Cornell University (2012)

2019-20 Courses


All Publications


  • The Possible Astrometric Signature of a Planetary-mass Companion to the Nearby Young Star TW Piscis Austrini (Fomalhaut B): Constraints from Astrometry, Radial Velocities, and Direct Imaging ASTRONOMICAL JOURNAL De Rosa, R. J., Esposito, T. M., Hirsch, L. A., Nielsen, E. L., Marley, M. S., Kalas, P., Wang, J. J., Macintosh, B. 2019; 158 (6)
  • Discovery of a White Dwarf Companion to HD 159062 ASTROPHYSICAL JOURNAL Hirsch, L. A., Ciardi, D. R., Howard, A. W., Marcy, G. W., Ruane, G., Gonzalez, E., Blunt, S., Crepp, J. R., Fulton, B. J., Isaacson, H., Kosiarek, M., Mawet, D., Sinukoff, E., Weiss, L. 2019; 878 (1)
  • Deep Exploration of epsilon Eridani with Keck Ms-band Vortex Coronagraphy and Radial Velocities: Mass and Orbital Parameters of the Giant Exoplanet ASTRONOMICAL JOURNAL Mawet, D., Hirsch, L., Lee, E. J., Ruffio, J., Bottom, M., Fulton, B. J., Absil, O., Beichman, C., Bowler, B., Bran, M., Choquet, E., Ciardi, D., Christiaens, V., Defrere, D., Gonzalez, C., Howard, A. W., Huby, E., Isaacson, H., Jensen-Clem, R., Kosiarek, M., Marcy, G., Meshkat, T., Petigura, E., Reggiani, M., Ruane, G., Serabyn, E., Sinukoff, E., Wang, J., Weiss, L., Ygouf, M. 2019; 157 (1)
  • orbitize!: A Comprehensive Orbit-fitting Software Package for the High-contrast Imaging Community ASTRONOMICAL JOURNAL Blunt, S., Wang, J. J., Angelo, I., Ngo, H., Cody, D., De Rosa, R. J., Graham, J. R., Hirsch, L., Nagpal, V., Nielsen, E. L., Pearce, L., Rice, M., Tejada, R. 2020; 159 (3)
  • Radial Velocity Discovery of an Eccentric Jovian World Orbiting at 18 au ASTRONOMICAL JOURNAL Blunt, S., Endl, M., Weiss, L. M., Cochran, W. D., Howard, A. W., MacQueen, P. J., Fulton, B. J., Henry, G. W., Johnson, M. C., Kosiarek, M. R., Lawson, K. D., Macintosh, B., Mills, S. M., Nielsen, E. L., Petigura, E. A., Schneider, G., Vanderburg, A., Wisniewski, J. P., Wittenmyer, R. A., Brugamyer, E., Caldwell, C., Cochran, A. L., Hatzes, A. P., Hirsch, L. A., Isaacson, H., Robertson, P., Roy, A., Shen, Z. 2019; 158 (5)
  • KELT-23Ab: A Hot Jupiter Transiting a Near-solar Twin Close to the TESS and JWST Continuous Viewing Zones ASTRONOMICAL JOURNAL Johns, D., Reed, P. A., Rodriguez, J. E., Pepper, J., Stassun, K. G., Penev, K., Gaudi, B., Labadie-Bartz, J., Fulton, B. J., Quinn, S. N., Eastman, J. D., Ciardi, D. R., Hirsch, L., Stevens, D. J., Stevens, C. P., Oberst, T. E., Cohen, D. H., Jensen, E. N., Benni, P., Villanueva, S., Murawsh, G., Bieryla, A., Latham, D. W., Vanaverbeke, S., Dubois, F., Rau, S., Logie, L., Rauenzahn, R. F., Wittenmyer, R. A., Zambelli, R., Bayliss, D., Beatty, T. G., Collins, K. A., Colon, K. D., Curtis, I. A., Evans, P., Gregorio, J., James, D., Depoy, D. L., Johnson, M. C., Joner, M. D., Kasper, D. H., Khakpash, S., Kielkopf, J. F., Kuhn, R. B., Lund, M. B., Manner, M., Marshall, J. L., McLeod, K. K., Penny, M. T., Relles, H., Siverd, R. J., Stephens, D. C., Stockdale, C., Tan, T., Trueblood, M., Trueblood, P., Yao, X. 2019; 158 (2)
  • The Gemini Planet Imager Exoplanet Survey: Giant Planet and Brown Dwarf Demographics from 10 to 100 au ASTRONOMICAL JOURNAL Nielsen, E. L., De Rosa, R. J., Macintosh, B., Wang, J. J., Ruffio, J., Chiang, E., Marley, M. S., Saumon, D., Savransky, D., Ammons, S., Bailey, V. P., Barman, T., Blain, C., Bulger, J., Burrows, A., Chilcote, J., Cotten, T., Czekala, I., Doyon, R., Duchene, G., Esposito, T. M., Fabrycky, D., Fitzgerald, M. P., Follette, K. B., Fortney, J. J., Gerard, B. L., Goodsell, S. J., Graham, J. R., Greenbaum, A. Z., Hibon, P., Hinkley, S., Hirsch, L. A., Hom, J., Hung, L., Dawson, R., Ingraham, P., Kalas, P., Konopacky, Q., Larkin, J. E., Lee, E. J., Lin, J. W., Maire, J., Marchis, F., Marois, C., Metchev, S., Millar-Blanchaer, M. A., Morzinski, K. M., Oppenheimer, R., Palmer, D., Patience, J., Perrin, M., Poyneer, L., Pueyo, L., Rafikov, R. R., Rajan, A., Rameau, J., Rantakyro, F. T., Ren, B., Schneider, A. C., Sivaramakrishnan, A., Song, I., Soummer, R., Tallis, M., Thomas, S., Ward-Duong, K., Wolff, S. 2019; 158 (1)
  • Detection of Planetary and Stellar Companions to Neighboring Stars via a Combination of Radial Velocity and Direct Imaging Techniques ASTRONOMICAL JOURNAL Kane, S. R., Dalba, P. A., Li, Z., Horch, E. P., Hirsch, L. A., Horner, J., Wittenmyer, R. A., Howell, S. B., Everett, M. E., Butler, R., Tinney, C. G., Carter, B. D., Wright, D. J., Jones, H. A., Bailey, J., O'Toole, S. J. 2019; 157 (6)
  • Long-period Giant Companions to Three Compact, Multiplanet Systems ASTRONOMICAL JOURNAL Mills, S. M., Howard, A. W., Weiss, L. M., Steffen, J. H., Isaacson, H., Fulton, B. J., Petigura, E. A., Kosiarek, M. R., Hirsch, L. A., Boisvert, J. H. 2019; 157 (4)
  • K2-291b: A Rocky Super-Earth in a 2.2 day Orbit ASTRONOMICAL JOURNAL Kosiarek, M. R., Blunt, S., Lopez-Morales, M., Crossfield, I. M., Sinukoff, E., Petigura, E. A., Gonzales, E. J., Poretti, E., Malavolta, L., Howard, A. W., Isaacson, H., Haywood, R. D., Ciardi, D. R., Bristow, M., Cameron, A., Charbonneau, D., Dressing, C. D., Figueird, P., Fulton, B. J., Hardee, B. J., Hirsch, L. A., Latham, D. W., Mortier, A., Nava, C., Schlieder, J. E., Vanderburg, A., Weiss, L., Bonomo, A. S., Bouchy, F., Buchhave, L. A., Coffinet, A., Damasso, M., Dumusque, X., Lovis, C., Mayor, M., Micela, G., Molinari, E., Pepe, F., Phillips, D., Piotto, G., Rice, K., Sasselov, D., Segransan, D., Sozzetti, A., Udry, S., Watson, C. 2019; 157 (3)
  • Observations of Binary Stars with the Differential Speckle Survey Instrument. VIII. Measures of Metal-poor and Triple Stars from 2015 to 2018 ASTRONOMICAL JOURNAL Horch, E. P., Tokovinin, A., Weiss, S. A., Lobb, J., Casetti-Dinescu, D., Granucci, N. M., Hess, N. M., Everett, M. E., van Belle, G. T., Winters, J. G., Nusdeo, D. A., Henry, T. J., Howell, S. B., Teske, J. K., Hirsch, L. A., Scott, N. J., Matson, R. A., Kane, S. R. 2019; 157 (2)
  • A Bayesian Framework for Exoplanet Direct Detection and Non-detection ASTRONOMICAL JOURNAL Ruffio, J., Mawet, D., Czekala, I., Macintosh, B., De Rosa, R. J., Ruane, G., Bottom, M., Pueyo, L., Wang, J. J., Hirsch, L., Zhu, Z., Nielsen, E. L. 2018; 156 (5)
  • 197 CANDIDATES AND 104 VALIDATED PLANETS IN K2's FIRST FIVE FIELDS ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES Crossfield, I. J., Ciardi, D. R., Petigura, E. A., Sinukoff, E., Schlieder, J. E., Howard, A. W., Beichman, C. A., Isaacson, H., Dressing, C. D., Christiansen, J. L., Fulton, B. J., Lepine, S., Weiss, L., Hirsch, L., Livingston, J., Baranec, C., Law, N. M., Riddle, R., Ziegler, C., Howell, S. B., Horch, E., Everett, M., Teske, J., Martinez, A. O., Obermeier, C., Benneke, B., Scott, N., Deacon, N., Aller, K. M., Hansen, B. M., Mancini, L., Ciceri, S., Brahm, R., Jordan, A., Knutson, H. A., Henning, T., Bonnefoy, M., Liu, M. C., Crepp, J. R., Lothringer, J., Hinz, P., Bailey, V., Skemer, A., Defrere, D. 2016; 226 (1)