136 citations · 554 across the 15 of their papers we have counts for
15 papers
CRIRES-POP: a library of high resolution spectra in the near-infrared. III. Line identification in the K-giant 10 Leo
Manfred Zendel, Thomas Lebzelter, Christine Nicholls
Context: High-resolution spectra in the near-infrared (NIR) are an important tool for the detailed study of stellar atmospheres. The accurate identification of elements and molecul…
CRIRES-POP: a library of high resolution spectra from 1 to 5 microns II. Data reduction and the spectrum of the K giant 10 Leo
C. P. Nicholls, T. Lebzelter, A. Smette +12
Context. High resolution stellar spectral atlases are valuable resources to astronomy. They are rare in the m region for historical reasons, but once available, high reso…
SDSS J111010.01+011613.1: A New Planetary-Mass T Dwarf Member of the AB Doradus Moving Group
Jonathan Gagné, Adam J. Burgasser, Jacqueline K. Faherty +5
We present a new radial velocity measurement that, together with a trigonometric parallax, proper motion and signs of low gravity from the literature, confirms that SDSS J111010.01…
SpeX Spectroscopy of Unresolved Very Low Mass Binaries. II. Identification of Fourteen Candidate Binaries with Late-M/Early-L and T Dwarf Components
Daniella C. Bardalez Gagliuffi, Adam J. Burgasser, Christopher R. Gelino +7
Multiplicity is a key statistic for understanding the formation of very low mass (VLM) stars and brown dwarfs. Currently, the separation distribution of VLM binaries remains poorly…
Fundamental properties of T dwarfs from model fits to FIRE spectra
C. P. Nicholls, A. J. Burgasser, C. V. Morley
We fit a sample of 49 R=6000 NIR (0.9 - 2.5 micron) T dwarf spectra obtained with Magellan's FIRE spectrograph with two different atmospheric model sets to compare the derived phys…
The Dusty Aftermath of the V1309 Sco Binary Merger
C. P. Nicholls, C. Melis, I. Soszyński +9
We present mid-IR photometry and spectra of the merged binary V1309 Sco taken between 18 and 23 months after outburst. Strong mid-IR emission and a solid state absorption feature i…
The kinematics of very low mass dwarfs: splinter session summary
Adam J. Burgasser, Jacqueline K. Faherty, Sarah Schmidt +10
Kinematic investigations are being increasingly deployed in studies of the lowest mass stars and brown dwarfs to investigate their origins, characterize their atmospheres, and exam…
Discovery of a Very Low Mass Triple with Late-M and T Dwarf Components: LP 704-48/SDSS J0006-0852AB
Adam J. Burgasser, Christopher Luk, Saurav Dhital +5
We report the identification of the M9 dwarf SDSS J000649.16-085246.3 as a spectral binary and radial velocity variable with components straddling the hydrogen burning mass limit.…
Predicting the Fate of Binary Red Giants Using the Observed Sequence E Star Population: Binary Planetary Nebula Nuclei and Post-RGB Stars
J. D. Nie, P. R. Wood, C. P. Nicholls
Sequence E variables are close binary red giants that show ellipsoidal light variations. They are likely the immediate precursors of planetary nebulae (PNe) with close binary centr…
Why variable AGB stars with Long Secondary Periods aren't binaries, but are dusty
C. P. Nicholls
Roughly 30% of variable AGB stars show a Long Secondary Period, or LSP. These LSPs have posed something of a problem in recent years and their cause remains a mystery. By combining…
Eccentric Ellipsoidal Red Giant Binaries in the LMC: Complete Orbital Solutions and Comments on Interaction at Periastron
C. P. Nicholls, P. R. Wood
Modelling ellipsoidal variables with known distances can lead to exact determination of the masses of both components, even in the absence of eclipses. We present such modelling us…
Predicting the Evolutionary Descendents of Sequence E Stars
J. D. Nie, P. R. Wood, C. P. Nicholls
Sequence E variables are close binary red giants that show ellipsoidal light variations. They are likely to terminate their red giant evolution by a common envelope (CE) event when…
Ellipsoidal Variability and the Difference between Sequence D and E Red Giants
C. P. Nicholls, P. R. Wood, M. -R. L. Cioni
We have studied a sample of Large Magellanic Cloud red giant binaries that lie on sequence E in the period--luminosity plane. We show that their combined light and velocity curves…
Evidence for mass ejection associated with long secondary periods in red giants
P. R. Wood, C. P. Nicholls
Approximately 30% of luminous red giants exhibit a Long Secondary Period (LSP) of variation in their light curves, in addition to a shorter primary period of oscillation. The cause…
Long Secondary Periods in Variable Red Giants
C. P. Nicholls, P. R. Wood, M. -R. L. Cioni +1
We present a study of a sample of LMC red giants exhibiting Long Secondary Periods (LSPs). We use radial velocities obtained from VLT spectral observations and MACHO and OGLE light…