Ryan McKinnon

Ph.D. candidate in physics at MIT, working with Mark Vogelsberger and supported by a Department of Energy Computational Science Graduate Fellowship

Research

Dust Formation in Milky Way-like Galaxies [arXiv] [MNRAS]

Ryan McKinnon, Paul Torrey, Mark Vogelsberger

We introduce a dust model for cosmological simulations implemented in the moving-mesh code AREPO and present a suite of cosmological hydrodynamical zoom-in simulations to study dust formation within galactic haloes. Our model accounts for the stellar production of dust, accretion of gas-phase metals onto existing grains, destruction of dust through local supernova activity, and dust driven by winds from star-forming regions. We find that accurate stellar and active galactic nuclei feedback is needed to reproduce the observed dust-metallicity relation and that dust growth largely dominates dust destruction. Our simulations predict a dust content of the interstellar medium which is consistent with observed scaling relations at z = 0, including scalings between dust-to-gas ratio and metallicity, dust mass and gas mass, dust-to-gas ratio and stellar mass, and dust-to-stellar mass ratio and gas fraction. We find that roughly two-thirds of dust at z = 0 originated from Type II supernovae, with the contribution from asymptotic giant branch stars below 20 per cent for z > 5. While our suite of Milky Way-sized galaxies forms dust in good agreement with a number of key observables, it predicts a high dust-to-metal ratio in the circumgalactic medium, which motivates a more realistic treatment of thermal sputtering of grains and dust cooling channels.

Please feel free to use the media below! [Click thumbnails to expand.]

Movies

Time evolution of gas, gas-phase metal, and dust densities from z=5 to z=0 in physical units.

Time evolution of dust and gas-phase metal densities alongside dust-to-metal ratio from z=5 to z=0 in physical units.

Rotation around the z=0 dust distribution for different lines of sight.


Images

Face-on and edge-on projections of gas, gas-phase metal, and dust densities and dust-to-metal ratio at z=2, 1, and 0.

Zoomed-in face-on and edge-on projections of dust-to-metal ratio at z=2, 1, and 0.

Comparison of gas (left) and gas-phase metal (right) surface densities for simulations with dust (top) and without dust (bottom) at z=0.

Face-on and edge-on projections of dust surface density at z=0 for all eight Aquarius halos.

Dust-to-metal ratio projections at z=0 for all eight Aquarius halos.

Dust-to-gas ratio versus gas-phase metallicity for the Aquarius halos at z=2, 1, and 0 (colored circles; smaller circles indicate higher redshift) with observational data for comparison (gray squares and triangles).

Predicted gas mass versus dust mass scaling for all Aquarius halos (colored circles), compared to observations (gray squares).

Dust-to-stellar mass ratio versus gas fraction for the Aquarius halos (colored circles) as compared with observations (gray squares).

Comparison of the dust-to-gas ratio versus stellar mass scaling for the Aquarius halos (colored circles) with observations (gray squares).

Radial dust surface density profiles for all Aquarius halos at z=0 (colored lines). The gray dashed line indicates the normalization-adjusted scaling observed in SDSS data, and gray squares indicate the observed profile for M31. Gray triangles show the M31 profile scaled by a factor of two.

Curriculum Vitae

Publications

  1. C. Barbarino, M. T. Botticella, M. Dall'Ora, M. Della Valle, S. Benetti, et al. LSQ14efd: observations of the cooling of a shock break-out event in a type Ic Supernova. Monthly Notices of the Royal Astronomical Society 471 (2017), 2463.
  2. R. McKinnon, P. Torrey, M. Vogelsberger, C. C. Hayward, and F. Marinacci. Simulating the dust content of galaxies: successes and failures. Monthly Notices of the Royal Astronomical Society 468 (2017), 1505.
  3. J. Polshaw, R. Kotak, L. Dessart, M. Fraser, A. Gal-Yam, et al. LSQ13fn: A type II-Plateau supernova with a possibly low metallicity progenitor that breaks the standardised candle relation. Astronomy & Astrophysics 588 (2016), A1.
  4. R. McKinnon, P. Torrey, and M. Vogelsberger. Dust formation in Milky Way-like galaxies. Monthly Notices of the Royal Astronomical Society 457 (2016), 3775.
  5. P. Torrey, S. Wellons, F. Machado, B. Griffen, D. Nelson, et al. An analysis of the evolving comoving number density of galaxies in hydrodynamical simulations. Monthly Notices of the Royal Astronomical Society 454 (2015), 2770.
  6. M. Nicholl, S. J. Smartt, A. Jerkstrand, C. Inserra, S. A. Sim, et al. On the diversity of superluminous supernovae: ejected mass as the dominant factor. Monthly Notices of the Royal Astronomical Society 452 (2015), 3869.
  7. E. E. Gall, J. Polshaw, R. Kotak, A. Jerkstrand, B. Leibundgut, et al. A comparative study of Type II-P and II-L supernova rise times as exemplified by the case of LSQ13cuw. Astronomy & Astrophysics 582 (2015), A3.
  8. E. S. Walker, C. Baltay, A. Campillay, C. Citrenbaum, C. Contreras, et al. First Results from the La Silla-QUEST Supernova Survey and the Carnegie Supernova Project. The Astrophysical Journal Supplement Series 219 (2015), 13.
  9. M. Nicholl, S. J. Smartt, A. Jerkstrand, S. A. Sim, C. Inserra, et al. LSQ14bdq: A Type Ic Super-luminous Supernova with a Double-peaked Light Curve. The Astrophysical Journal Letters 807 (2015), L18.
  10. S. J. Smartt, S. Valenti, M. Fraser, C. Inserra, D. R. Young, et al. PESSTO: survey description and products from the first data release by the Public ESO Spectroscopic Survey of Transient Objects. Astronomy & Astrophysics 579 (2015), A40.
  11. A. Pastorello, E. Hadjiyska, D. Rabinowitz, S. Valenti, M. Turatto, et al. Massive stars exploding in a He-rich circumstellar medium - VI. Observations of two distant Type Ibn supernova candidates discovered by La Silla-QUEST. Monthly Notices of the Royal Astronomical Society 449 (2015), 1954.
  12. N. E. Sanders, A. M. Soderberg, S. Gezari, M. Betancourt, R. Chornock, et al. Toward Characterization of the Type IIP Supernova Progenitor Population: A Statistical Sample of Light Curves from Pan-STARRS1. The Astrophysical Journal 799 (2015), 208.
  13. R. E. Firth, M. Sullivan, A. Gal-Yam, D. A. Howell, K. Maguire, et al. The rising light curves of Type Ia supernovae. Monthly Notices of the Royal Astronomical Society 446 (2015), 3895.
  14. R. A. Scalzo, M. Childress, B. Tucker, F. Yuan, B. Schmidt, et al. Early ultraviolet emission in the Type Ia supernova LSQ12gdj: No evidence for ongoing shock interaction. Monthly Notices of the Royal Astronomical Society 445 (2014), 30.
  15. M. Nicholl, S. J. Smartt, A. Jerkstrand, C. Inserra, J. P. Anderson, et al. Superluminous supernovae from PESSTO. Monthly Notices of the Royal Astronomical Society 444 (2014), 2096.
  16. M. R. Drout, R. Chornock, A. M. Soderberg, N. E. Sanders, R. McKinnon, et al. Rapidly Evolving and Luminous Transients from Pan-STARRS1. The Astrophysical Journal 794 (2014), 23.
  17. K. Maguire, M. Sullivan, F. Patat, A. Gal-Yam, I. M. Hook, et al. A statistical analysis of circumstellar material in Type Ia supernovae. Monthly Notices of the Royal Astronomical Society 436 (2013), 222.
  18. C. Baltay, D. Rabinowitz, E. Hadjiyska, E. S. Walker, P. Nugent, et al. The La Silla-QUEST Low Redshift Supernova Survey. Publications of the Astronomical Society of the Pacific 125 (2013), 683.

Awards and Honors

  • Department of Energy Computational Science Graduate Fellowship, 2014-present
  • Howard L. Schultz Prize, Yale University, 2014
  • Phi Beta Kappa Society, 2014
  • Yale College Dean's Research Fellowship in the Sciences, 2011, 2013

Contact

ryanmck@mit.edu