Powiadomienia systemowe
- Sesja wygasła!
Tytuł artykułu
Autorzy
Wybrane pełne teksty z tego czasopisma
Identyfikatory
Warianty tytułu
Języki publikacji
Abstrakty
Microlensing events can be used to directly measure the masses of single field stars to a precision of ≈1–10%. The majority of direct mass measurements for stellar and sub-stellar objects typically only come from observations of binary systems. Hence microlensing provides an important channel for direct mass measurements of single stars. The Gaia satellite has observed ≈1.7 billion objects, and analysis of the second data release has recently yielded numerous event predictions for the next few decades. However, the Gaia catalog is incomplete for nearby very-low-mass objects such as brown dwarfs for which mass measurements are most crucial. We employ a catalog of very-low-mass objects from Pan-STARRS data release 1 (PDR1) as potential lens stars, and we use the objects from Gaia data release 2 (GDR2) as potential source stars. We then search for future microlensing events up to the year 2070. The Pan-STARRS1 objects are first cross-matched with GDR2 to remove any that are present in both catalogs. This leaves a sample of 1718 possible lenses. We fit MIST isochrones to the Pan-STARRS1, AllWISE and 2MASS photometry to estimate their masses. We then compute their paths on the sky, along with the paths of the GDR2 source objects, until the year 2070, and search for potential microlensing events. Source-lens pairs that will produce a microlensing signal with an astrometric amplitude of greater than 0.131 mas, or a photometric amplitude of greater than 0.4 mmag, are retained.
Czasopismo
Rocznik
Tom
Strony
351--370
Opis fizyczny
Bibliogr. 51 poz., rys., tab., wykr.
Twórcy
autor
- Center for Space Science, NYUAD Institute, New York University Abu Dhabi, PO Box 129188, Abu Dhabi, UAE
autor
- New York University Abu Dhabi, PO Box 129188, Saadiyat Island, Abu Dhabi, UAE
Bibliografia
- Anglada-Escudé, G., Shkolnik, E.L., Weinberger, A.J., Thompson, I.B., Osip, D.J., and Debes, J.H. 2010, ApJ, 711, L24.
- Beamin, J.C., Minniti, D., Gromadzki, M., Kurtev, R., Ivanov, V.D., Beletsky, Y., Lucas, P., Saito, R.K., and Borissova, J. 2013, A&A, 557, L8.
- Bean, J.L., Seifahrt, A., Hartman, H., Nilsson, H., Reiners, A., Dreizler, S., Henry, T.J., and Wiedemann, G. 2010, ApJ, 711, L19.
- Beaulieu, J.-P., et al. 2006, Nature, 439, 437.
- Belokurov, V.A., and Evans, N.W. 2002, MNRAS, 331, 649.
- Best, W.M.J., et al. 2015, ApJ, 814, 118.
- Best, W.M.J., et al. 2018, ApJS, 234, 1.
- Bramich, D.M. 2017, Astrophysics, Source, Code, Library, record ascl:1709.005.
- Bramich, D.M. 2018, A&A, 618, 44.
- Bramich, D.M., and Nielsen, M.B. 2018, Acta Astron., 68, 183.
- Burgasser, A.J., et al. 2000, AJ, 120, 1100.
- Burgasser, A.J., Burrows, A., and Kirkpatrick, J.D. 2006, ApJ, 639, 1095.
- Burrows, A., Sudarsky, D., and Hubeny, I. 2006, ApJ, 640, 1063.
- Chambers, K.C., et al. 2016, arXiv:1612.05560.
- Choi, J., Dotter, A., Conroy, C., Cantiello, M., Paxton, B., and Johnson, B.D. 2016, ApJ, 823, 102.
- Cushing, M.C., Kirkpatrick, J.D., Gelino, C.R., Mace, G.N., Skrutskie, M.F., and Gould, A. 2014, AJ, 147, 113.
- Dominik, M., and Sahu, K.C. 2000, ApJ, 534, 213.
- Dotter, A. 2016, ApJS, 222, 8. Dupuy, T.J., and Liu, M.C. 2012, ApJS, 201, 19.
- Einstein, A. 1915, Sitzungsber. preuss. Akad. Wiss., 47, 831.
- Einstein, A. 1936, Science, 84, 506.
- Fabricius, C., et al. 2016, A&A, 595, A3.
- Foreman-Mackey, D., Hogg, D.W., Lang, D., and Goodman, J. 2013, PASP, 125, 306.
- Gaia Collaboration, et al. 2016, A&A, 595, A1.
- Gaia Collaboration, et al. 2018a, A&A, 616, A1.
- Gaia Collaboration, et al. 2018b, A&A, 616, A10.
- Giclas, H.L., Burnham, R., and Thomas, N.G. 1967, Lowell Observatory Bulletin, 7, 49.
- Harrington, R.S., Dahn, C.C., and Guetter, H.H. 1974, ApJ, 194, L87.
- Irwin, J., Berta-Thompson, Z.K., Charbonneau, D., Dittmann, J., and Newton, E.R. 2015, American, Astronomical, Society, Meeting, Abstracts, 225, 258.01.
- Jordi, C., et al. 2010, A&A, 523, A48.
- Kaiser, N., et al. 2010, Proceedings of the SPIE, 7733, 77330E.
- Kirkpatrick, J.D., et al. 2010, ApJS, 190, 100.
- Kirkpatrick, J.D., et al. 2014, ApJ, 783, 122.
- Lazorenko, P.F., et al. 2011, A&A, 527, A25.
- Lépine, S., Rich, R.M., and Shara, M.M. 2003, AJ, 125, 1598.
- Liebes, S. 1964, Physical Review, 133, 835.
- Linsky, J.L., Wood, B.E., Brown, A., Giampapa, M.S., and Ambruster, C. 1995, ApJ, 455, 670.
- Mace, G.N., et al. 2013, ApJS, 205, 6.
- Mason, B.D., Wycoff, G.L., Hartkopf, W.I., Douglass, G.G., and Worley C.E. 2001, AJ, 122, 3466.
- Morton, T.D. 2015, Astrophysics Source Code Library, ascl:1503.010.
- Phan-Bao, N., et al. 2008, MNRAS, 383, 831.
- Pravdo, S.H., and Shaklan, S.B. 2009, ApJ, 700, 623.
- Refsdal, S. 1964, MNRAS, 128, 295.
- Rodono, M., Ciatti, F., and Vittone, A. 1980, AJ, 85, 298.
- Rybicki, K.A., Wyrzykowski, Ł., Klencki, J., de Bruijne, J., Belczynski, K., and Chruslinska, M. 2018, MNRAS, 476, 2013.
- Sahu, K.C., et al. 2017, Science, 356, 1046.
- Sumi, T., et al. 2013, ApJ, 778, 150.
- Udalski, A. 2003, Acta Astron., 53, 291.
- Udalski, A., Szymański, M.K., and Szymański, G. 2015, Acta Astron., 65, 1.
- van Biesbroeck, G. 1944, AJ, 51, 61.
- van Biesbroeck, G. 1961, AJ, 66, 528.
- Wyrzykowski, Ł., et al. 2015, ApJS, 216, 12.
Uwagi
Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-36ff42df-8318-40b5-9242-436540bef496