Lithium in the Intermediate-Age Open Cluster, NGC 3680 (2009)
Anthony-Twarog, B. J., Deliyannis, C. P., Twarog, B. A., Croxall, K. V., Cummings, J. D.
High-dispersion spectra centered on the Li 6708 A line have been obtained for 70 potential members of the open cluster NGC 3680, with an emphasis on stars in the turnoff region. A measurable Li...
Observations of V592 Cas -— an Outflow at Optical Wavelengths (2009)
Kafka, S., Hoard, D. W., Honeycutt, R. K., Deliyannis, C. P.
We present new red optical spectra of V592 Cas aimed at exploring the properties of the outflow of this system in a spectral region where the underlying white dwarf and the accretion disk do not...
Observations of V592 Cas - An Outflow at Optical Wavelengths (2008)
Kafka, S., Hoard, D. W., Honeycutt, R. K., Deliyannis, C. P.
We present new red optical spectra of V592 Cas aimed at exploring the properties of the outflow of this system in a spectral region where the underlying white dwarf and the accretion disk do not...
HE1327-2326, an unevolved star with [Fe/H] (2005)
Aoki, W., Frebel, A., Christlieb, N., Norris, J. E., Beers, T. C., Minezaki, T., ...
We present the elemental abundances of HE1327-2326, the most iron-deficient star known, determined from a comprehensive analysis of spectra obtained with the Subaru Telescope High Dispersion...
Beryllium Enhancement as Evidence for Accretion in a Lithium-Rich F Dwarf (2005)
Ashwell, J. F., Jeffries, R. D., Smalley, B., Deliyannis, C. P., Steinhauer, A., King, J. R.
The early F dwarf star ``J37'' in the open cluster NGC6633 shows an unusual pattern of photospheric abundances, including an order of magnitude enhancement of lithium and iron-peak elements, but an...
The Li Overabundance of J37: Diffusion or Accretion? (2004)
Ashwell, J. F., Jeffries, R. D., Smalley, B., Deliyannis, C. P., Steinhauer, A., King, J. R.
In September 2002 the discovery of a super Li-rich F-dwarf (J37) in NGC 6633, an iron poor analogue of the better studied Hyades and Praecepe open clusters, was announced. This unique star was...
Membership, metallicity and lithium abundances for solar-type stars in NGC 6633 (2002)
Jeffries, R. D., Totten, E. J., Harmer, S., Deliyannis, C. P.
We present spectroscopic observations of candidate F, G and K type stars in NGC 6633, an open cluster with a similar age to the Hyades. We identify 10 new cluster members including one short period...
WIYN Open Cluster Study: Lithium in Cool Dwarfs of the M35 Open Cluste (1999)
Navascues, D. Barrado Y, Deliyannis, C. P., Stauffer, J. R.
We have obtained high resolution spectra of $\sim$40 members of M35, determined the Lithium-T$_{\rm{eff}}$ morphology and the distribution of the rotational velocity for G and K stars, and compared...
McArthur, B. E., Benedict, G. F., Lee, J., Van Altena, W. F., Deliyannis, C. P., ...
RW Triangulum (RW Tri) is a 13th magnitude Nova-like Cataclysmic Variable star with an orbital period of 0.2319 days (5.56 hours). Infrared observations of RW Tri indicate that its secondary is most...
Beryllium Abundances in Halo Stars from Keck/HIRES Observations. (1999)
Boesgaard, A.M., Deliyannis, C.P., King, J.R., Ryan, S.G., Vogt, S., Beers, T.C.
Original article can be found at: http://www.iop.org/EJ/journal/aj Copyright American Astronomical Society DOI: 10.1086/300780 [Full text of this article is not available in the UHRA]
Boron in the very metal-poor star BD-13 3442 (1998)
Duncan, D. K., Rebull, L. M., Primas, F., Boesgaard, A. M., Deliyannis, C. P., Hobbs, L. M., ...
The Goddard High Resolution Spectrograph (GHRS) of the Hubble Space Telescope (HST) has been used to observe the boron 2500 A region of BD-13 3442. At a metallicity of [Fe/H]=-3.00, this is the most...
Boron in the very metal-poor star BD-13 3442. (1998)
Duncan, D.K., Rebull, L.M., Primas, F., Boesgaard, A.M., Deliyannis, C.P., Hobbs, L.M., ...
Flare Production of $^6$Li in Population~II Stars (1994)
Deliyannis, C. P., Malaney, R. A.
Motivated by the recent report of a $^6$Li detection in the atmosphere of HD~84937, we couple stellar evolution calculations with light isotope production via stellar flares. We find that as a...