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  Quasar accretion disk sizes from continuum reverberation mapping in the DES standard-star fields

Yu, Z., Martini, P., Davis, T. M., Gruendl, R. A., Hoormann, J. K., Kochanek, C. S., et al. (2020). Quasar accretion disk sizes from continuum reverberation mapping in the DES standard-star fields. The Astrophysical Journal Supplement Series, 246(1): 16. doi:10.3847/1538-4365/ab5e7a.

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Yu, Zhefu, Author
Martini, Paul, Author
Davis, T. M., Author
Gruendl, R. A., Author
Hoormann, J. K., Author
Kochanek, C. S., Author
Lidman, C., Author
Mudd, D., Author
Peterson, B. M., Author
Wester, W., Author
Allam, S., Author
Annis, J., Author
Asorey, J., Author
Avila, S., Author
Banerji, M., Author
Bertin, E., Author
Brooks, D., Author
Buckley-Geer, E., Author
Calcino, J., Author
Rosell, A. Carnero, Author
Carollo, D., AuthorKind, M. Carrasco, AuthorCarretero, J., AuthorCunha, C. E., AuthorD'Andrea, C. B., Authorda Costa, L. N., AuthorVicente, J. De, AuthorDesai, S., AuthorDiehl, H. T., AuthorDoel, P., AuthorEifler, T. F., AuthorFlaugher, B., AuthorFosalba, P., AuthorFrieman, J., AuthorGarcía-Bellido, J., AuthorGaztanaga, E., AuthorGlazebrook, K., AuthorGruen, D., AuthorGschwend, J., AuthorGutierrez, G., AuthorHartley, W. G., AuthorHinton, S. R., AuthorHollowood, D. L., AuthorHonscheid, K., AuthorHoyle, B.1, Author           James, D. J., AuthorKim, A. G., AuthorKrause, E., AuthorKuehn, K., AuthorKuropatkin, N., AuthorLewis, G. F., AuthorLima, M., AuthorMacaulay, E., AuthorMaia, M. A. G., AuthorMarshall, J. L., AuthorMenanteau, F., AuthorMiquel, R., AuthorMöller, A., AuthorPlazas, A. A., AuthorRomer, A. K., AuthorSanchez, E., AuthorScarpine, V., AuthorSchubnell, M., AuthorSerrano, S., AuthorSmith, M., AuthorSmith, R. C., AuthorSoares-Santos, M., AuthorSobreira, F., AuthorSuchyta, E., AuthorSwann, E., AuthorSwanson, M. E. C., AuthorTarle, G., AuthorTucker, B. E., AuthorTucker, D. L., AuthorVikram, V., Author more..
1Optical and Interpretative Astronomy, MPI for Extraterrestrial Physics, Max Planck Society, ou_159895              


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 Abstract: Measurements of the physical properties of accretion disks in active galactic nuclei are important for better understanding the growth and evolution of supermassive black holes. We present the accretion disk sizes of 22 quasars from continuum reverberation mapping with data from the Dark Energy Survey (DES) standard-star fields and the supernova C fields. We construct continuum light curves with the griz photometry that span five seasons of DES observations. These data sample the time variability of the quasars with a cadence as short as 1 day, which corresponds to a rest-frame cadence that is a factor of a few higher than most previous work. We derive time lags between bands with both JAVELIN and the interpolated cross-correlation function method and fit for accretion disk sizes using the JAVELIN thin-disk model. These new measurements include disks around black holes with masses as small as ~107 M , which have equivalent sizes at 2500 Å as small as ~0.1 lt-day in the rest frame. We find that most objects have accretion disk sizes consistent with the prediction of the standard thin-disk model when we take disk variability into account. We have also simulated the expected yield of accretion disk measurements under various observational scenarios for the Large Synoptic Survey Telescope Deep Drilling Fields. We find that the number of disk measurements would increase significantly if the default cadence is changed from 3 days to 2 days or 1 day.


Language(s): eng - English
 Dates: 2020-01-16
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.3847/1538-4365/ab5e7a
Other: LOCALID: 3235777
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Title: The Astrophysical Journal Supplement Series
Source Genre: Journal
Publ. Info: -
Pages: - Volume / Issue: 246 (1) Sequence Number: 16 Start / End Page: - Identifier: -