80 citations · 555 across the 19 of their papers we have counts for
19 papers
The Arches cluster revisited: IV. Observational constraints on the binary properties of very massive stars
J. S. Clark, M. E. Lohr, F. Najarro +2
Serving as the progenitors of electromagnetic and gravitational wave transients, massive stars have received renewed interest in recent years. However, many aspects of their birth…
Constraining the population of isolated massive stars within the Central Molecular Zone
J. S. Clark, L. R. Patrick, F. Najarro +2
Many galaxies host pronounced circumnuclear starbursts, fuelled by infalling gas. Such activity is expected to drive the secular evolution of the nucleus and generate super winds,…
The Arches cluster revisited. III. An addendum to the stellar census
J. S. Clark, M. E. Lohr, L. R. Patrick +1
The Arches is one of the youngest, densest and most massive clusters in the Galaxy. As such it provides a unique insight into the lifecycle of the most massive stars known and the…
A VLT/FLAMES survey for massive binaries in Westerlund 1 V. the X-ray selected blue stragglers Wd1-27 and -30a
J. S. Clark, F. Najarro, I. Negueruela +3
Observational studies suggest that many OB stars are found within binary systems which may be expected to interact during their lifetimes. Significant mass transfer or merger of bo…
An updated stellar census of the Quintuplet cluster
J. S. Clark, M. E. Lohr, L. R. Patrick +3
The Quintuplet is one of the most massive galactic clusters known, but appears to host a diverse stellar population that is difficult to reconcile with an instantaneous formation e…
New Cepheid variables in the young open clusters Berkeley 51 and Berkeley 55
M. E. Lohr, I. Negueruela, H. M. Tabernero +3
As part of a wider investigation of evolved massive stars in Galactic open clusters, we have spectroscopically identified three candidate classical Cepheids in the little-studied c…
The Arches cluster revisited: II. A massive eclipsing spectroscopic binary in the Arches cluster
M. E. Lohr, J. S. Clark, F. Najarro +3
We have carried out a spectroscopic variability survey of some of the most massive stars in the Arches cluster, using K-band observations obtained with SINFONI on the VLT. One targ…
The Arches cluster revisited: I. Data presentation and stellar census
J. S. Clark, M. E. Lohr, F. Najarro +2
Located within the central region of the Galaxy, the Arches cluster appears to be one of the youngest, densest and most massive stellar aggregates within the Milky Way. As such it…
SuperWASP discovery and SALT confirmation of a semi-detached eclipsing binary that contains a delta Scuti star
A. J. Norton, M. E. Lohr, B. Smalley +2
We searched the SuperWASP archive for objects displaying multiply periodic photometric variations. Specifically we sought evidence for eclipsing binary stars displaying a further n…
A long-period Cepheid variable in the starburst cluster VdBH222
J. S. Clark, I. Negueruela, M. E. Lohr +4
Galactic starburst clusters play a twin role in astrophysics, serving as laboratories for the study of stellar physics and also delineating the structure and recent star formation…
Starspot distributions on fully convective M dwarfs: implications for radial velocity planet searches
J. R. Barnes, S. V. Jeffers, H. R. A. Jones +4
Since M4.5 - M9 dwarfs exhibit equatorial rotation velocities of order 10 km/s on average, radial velocity surveys targeting this stellar population will likely need to find method…
Orbital period changes and the higher-order multiplicity fraction amongst SuperWASP eclipsing binaries
M. E. Lohr, A. J. Norton, S. G. Payne +2
Orbital period changes of binary stars may be caused by the presence of a third massive body in the system. Here we have searched the archive of the Wide Angle Search for Planets (…
Exploring eclipsing binaries, triples and higher-order multiple star systems with the SuperWASP archive
M. E. Lohr
The Super Wide Angle Search for Planets (SuperWASP) is a whole-sky high-cadence optical survey which has searched for exoplanetary transit signatures since 2004. Its archive contai…
The doubly eclipsing quintuple low-mass star system 1SWASP J093010.78+533859.5
M. E. Lohr, A. J. Norton, E. Gillen +6
Our discovery of 1SWASP J093010.78+533859.5 as a probable doubly eclipsing quadruple system containing a contact binary with P~0.23 d and a detached binary with P~1.31 d was announ…
Period and amplitude variations in post-common-envelope eclipsing binaries observed with SuperWASP
M. E. Lohr, A. J. Norton, D. R. Anderson +13
Period or amplitude variations in eclipsing binaries may reveal the presence of additional massive bodies in the system, such as circumbinary planets. Here, we have studied twelve…
Parameters of two low-mass contact eclipsing binaries near the short-period limit
M. E. Lohr, S. T. Hodgkin, A. J. Norton +1
The two objects 1SWASP J150822.80-054236.9 and 1SWASP J160156.04+202821.6 were initially detected from their SuperWASP archived light curves as candidate eclipsing binaries with pe…
One, two or three stars? An investigation of an unusual eclipsing binary candidate undergoing dramatic period changes
M. E. Lohr, A. J. Norton, U. C. Kolb +1
We report our investigation of 1SWASP J234401.81-212229.1, a variable with a 18461.6 s period. After identification in a 2011 search of the SuperWASP archive for main-sequence ecli…
Period and period change measurements for 143 SuperWASP eclipsing binary candidates near the short-period limit and discovery of a doubly eclipsing quadruple system
M. E. Lohr, A. J. Norton, U. C. Kolb +3
Building on previous work, a new search of the SuperWASP archive was carried out to identify eclipsing binary systems near the short-period limit. 143 candidate objects were detect…
Period decrease in three SuperWASP eclipsing binary candidates near the short-period limit
M. E. Lohr, A. J. Norton, U. C. Kolb +3
SuperWASP light curves for 53 W UMa-type eclipsing binary (EB) candidates, identified in previous work as being close to the contact binary short-period limit, were studied for evi…