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Dr Marcus Lohr

Profile summary

  • Research Staff
  • Post Doctoral Research Associate
  • Faculty of Science, Technology, Engineering & Mathematics
  • School of Physical Sciences
  • marcus.lohr

Research interests

During my PhD at the OU I worked with Andrew Norton, using the SuperWASP archive to study variable stars, especially eclipsing binaries and variables exhibiting period changes.  Initially I concentrated on very short-period binaries - usually W UMa-type contact systems - close to the cut-off in the period distribution for main sequence binaries, around 0.20 days.  Many of these binaries have proved to be part of higher-order multiple systems, leading to an ongoing interest in stellar multiplicity more generally; I have also studied post-common-envelope eclipsing binaries to search for orbital period changes potentially linked to planetary companions.  Currently I am also working with Simon Clark, extending my interest in binaries to massive stars.

Publications

SuperWASP discovery and SALT confirmation of a semi-detached eclipsing binary that contains a delta Scuti star (2016-03)
Norton, A.J.; Lohr, M.E.; Smalley, B.; Wheatley, P.J. and West, R.G.
Astronomy & Astrophysics, 587, Article A54(March 2016)
Starspot distributions on fully convective M dwarfs: implications for radial velocity planet searches (2015-10-07)
Barnes, J. R.; Jeffers, S. V.; Jones, H. R. A.; Pavlenko, Ya. V.; Jenkins, J. S.; Haswell, C. A. and Lohr, M. E.
The Astrophysical Journal, 812(1) (p 42)
Orbital period changes and the higher-order multiplicity fraction amongst SuperWASP eclipsing binaries (2015-06-17)
Lohr, M. E.; Norton, A. J.; Payne, S. G.; West, R. G. and Wheatley, P. J.
Astronomy & Astrophysics, 578, Article A136
The doubly eclipsing quintuple low-mass star system 1SWASP J093010.78+533859.5 (2015-06-12)
Lohr, M. E.; Norton, A. J.; Gillen, E.; Busuttil, R.; Kolb, U. C.; Aigrain, S.; McQuillan, A.; Hodgkin, S. T. and González, E.
Astronomy & Astrophysics, 578, Article A103
Period and amplitude variations in post-common-envelope eclipsing binaries observed with SuperWASP (2014-06)
Lohr, M. E,; Norton, A. J.; Anderson, D. R.; Collier Cameron, A.; Faedi, F.; Haswell, C. A.; Hellier, C.; Hodgkin, S. T.; Horne, K.; Kolb, U. C.; Maxted, P. F. L.; Pollacco, D.; Skillen, I.; Smalley, B.; West, R. G. and Wheatley, P. J.
Astronomy & Astrophysics, 566, Article A128
Parameters of two low-mass contact eclipsing binaries near the short-period limit (2014-02)
Lohr, M. E.; Hodgkin, S. T.; Norton, A. J. and Kolb, U. C.
Astronomy & Astrophysics, 563, Article A34
One, two, or three stars? An investigation of an unusual eclipsing binary candidate undergoing dramatic period changes (2013-10)
Lohr, M. E.; Norton, A. J.; Kolb, U. C. and Boyd, D. R. S.
Astronomy & Astrophysics, 558, Article A71
Period and period change measurements for 143 SuperWASP eclipsing binary candidates near the short-period limit and discovery of a doubly eclipsing quadruple system (2013-01)
Lohr, M. E.; Norton, A. J.; Kolb, U. C.; Maxted, P. F. L.; Todd, I. and West, R. G.
Astronomy & Astrophysics, 549, Article A86
Period decrease in three SuperWASP eclipsing binary candidates near the short-period limit (2012-06)
Lohr, M. E.; Norton, A. J.; Kolb, U. C.; Anderson, D. R.; Faedi, F. and West, R. G.
Astronomy & Astrophysics, 542, Article A124
Exploring eclipsing binaries, triples and higher-order multiple star systems with the SuperWASP archive (2015-08-03)
Lohr, Marcus
In : Living Together: Planets, Host Stars and Binaries (8-12 September 2014, Litomyšl, Czech Republic) (pp. 71-75)
Eclipsing Binaries and Period Changes in the SuperWASP Archive (2015-01-13)
Lohr, Marcus
PhD thesis The Open University

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