Search Results - "KALIRAI, J. S"

An age difference of two billion years between a metal-rich and a metal-poor globular cluster by Hansen, B. M. S., Kalirai, J. S., Anderson, J., Dotter, A., Richer, H. B., Rich, R. M., Shara, M. M., Fahlman, G. G., Hurley, J. R., King, I. R., Reitzel, D., Stetson, P. B.

“…An absolute age of about ten billion years is determined for the globular cluster 47 Tucanae, which is about two billion years younger than the cluster NGC…”
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New Insights into the Problem of the Surface Gravity Distribution of Cool DA White Dwarfs by Tremblay, P.-E, Bergeron, P, Kalirai, J. S, Gianninas, A

“…We review at length the longstanding problem in the spectroscopic analysis of cool hydrogen-line (DA) white dwarfs (T{sub eff}< 13,000 K) where gravities are…”
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Deep MMT Transit Survey of the Open Cluster M37. III. Stellar Rotation at 550 Myr by Hartman, J. D, Gaudi, B. S, Pinsonneault, M. H, Stanek, K. Z, Holman, M. J, McLeod, B. A, Meibom, S, Barranco, J. A, Kalirai, J. S

“…In the course of conducting a deep (14.5 r 23), 20 night survey for transiting planets in the rich ~550 Myr old open cluster M37, we have measured the rotation…”
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Deep MMT Transit Survey of the Open Cluster M37. II. Variable Stars by Hartman, J. D, Gaudi, B. S, Holman, M. J, McLeod, B. A, Stanek, K. Z, Barranco, J. A, Pinsonneault, M. H, Kalirai, J. S

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The Quasar SDSS J105041.35+345631.3: Black Hole Recoil or Extreme Double-Peaked Emitter? by Shields, G. A, Rosario, D. J, Smith, K. L, Bonning, E. W, Salviander, S, Kalirai, J. S, Strickler, R, Ramirez-Ruiz, E, Dutton, A. A, Treu, T, Marshall, P. J

“…The quasar SDSS J105041.35+345631.3 (z = 0.272) has broad emission lines blueshifted by 3500 km s-1 relative to the narrow lines and the host galaxy. Such an…”
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AN EMPIRICAL MEASURE OF THE RATE OF WHITE DWARF COOLING IN 47 TUCANAE by GOLDSBURY, R, HEYL, J, WOODLEY, K. A, RICHER, H. B, BERGERON, P, DOTTER, A, KALIRAI, J. S, MACOONALD, J, RICH, R. M, STETSON, P. B, TREMBLAY, P.-E

“…We present an empirical determination of the white dwarf cooling sequence in the globular cluster 47 Tucanae. Using spectral models, we determine temperatures…”
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Deep MMT Transit Survey of the Open Cluster M37 IV: Limit on the Fraction of Stars with Planets as Small as 0.3RJ by Hartman, J. D, Gaudi, B. S, Holman, M. J, McLeod, B. A, Stanek, K. Z, Barranco, J. A, Pinsonneault, M. H, Meibom, S, Kalirai, J. S

“…We present the results of a deep (15 r 23), 20 night survey for transiting planets in the intermediate-age open cluster M37 (NGC 2099) using the Megacam…”
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The Galaxy Hosts and Large-Scale Environments of Short-Hard Gamma-Ray Bursts by Prochaska, J. X, Bloom, J. S, Chen, H.-W, Foley, R. J, Perley, D. A, Ramirez-Ruiz, E, Granot, J, Lee, W. H, Pooley, D, Alatalo, K, Hurley, K, Cooper, M. C, Dupree, A. K, Gerke, B. F, Hansen, B. M. S, Kalirai, J. S, Newman, J. A, Rich, R. M, Richer, H, Stanford, S. A, Stern, D, van Breugel, W. J. M

“…The rapid succession of discoveries of short-duration hard-spectrum gamma-ray bursts (GRBs) has led to unprecedented insights into the energetics of the…”
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The field white dwarf mass distribution by Tremblay, P.-E., Cummings, J., Kalirai, J. S., Gänsicke, B. T., Gentile-Fusillo, N., Raddi, R.

“…We revisit the properties and astrophysical implications of the field white dwarf mass distribution in preparation of Gaia applications. Our study is based on…”
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Can magnetic fields suppress convection in the atmosphere of cool white dwarfs? A case study on WD2105−820 by Gentile Fusillo, N. P., Tremblay, P.-E., Jordan, S., Gänsicke, B. T., Kalirai, J. S., Cummings, J.

“…Abstract Around 10 per cent of white dwarfs exhibit global magnetic structures with fields ranging from 1 kG to hundreds of MG. Recently, the first radiation…”
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Disentangling the Galaxy at low Galactic latitudes by Cignoni, M., Tosi, M., Bragaglia, A., Kalirai, J. S., Davis, D. S.

“…We have used the field stars from the open cluster survey BOCCE (Bologna Open Clusters Chemical Evolution), to study three low-latitude fields imaged with the…”
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CONSTRAINING WHITE DWARF STRUCTURE AND NEUTRINO PHYSICS IN 47 TUCANAE by Goldsbury, R., Heyl, J., Richer, H. B., Kalirai, J. S., Tremblay, P. E.

“…ABSTRACT We present a robust statistical analysis of the white dwarf cooling sequence in 47 Tucanae. We combine Hubble Space Telescope UV and optical data in…”
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On the Use of the Main-sequence Knee (Saddle) to Measure Globular Cluster Ages by Saracino, S., Dalessandro, E., Ferraro, F. R., Lanzoni, B., Origlia, L., Salaris, M., Pietrinferni, A., Geisler, D., Kalirai, J. S., Correnti, M., Cohen, R. E., Mauro, F., Villanova, S., Bidin, C. Moni

“…In this paper, we review the operational definition of the so-called main-sequence knee (MS-knee), a feature in the color-magnitude diagram (CMD) occurring at…”
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WHITE DWARF COSMOCHRONOLOGY IN THE SOLAR NEIGHBORHOOD by Tremblay, P-E, Kalirai, J S, Soderblom, D R, Cignoni, M, Cummings, J

“…The study of the stellar formation history in the solar neighborhood is a powerful technique to recover information about the early stages and evolution of the…”
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WHITE DWARFS IN THE UKIRT INFRARED DEEP SKY SURVEY DATA RELEASE 9 by Tremblay, E, Leggett, S K, Lodieu, N, Freytag, B, Bergeron, P, Kalirai, J S, Ludwig, G

“…We have identified 8 to 10 new cool white dwarfs from the Large Area Survey (LAS) Data Release 9 of the United Kingdom InfraRed Telescope (UKIRT) Infrared Deep…”
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Very Early Ultraviolet and Optical Observations of the Type Ia Supernova 2009ig by Foley, Ryan J, Challis, P. J, Filippenko, A. V, Ganeshalingam, M, Landsman, W, Li, W, Marion, G. H, Silverman, J. M, Beaton, R. L, Bennert, V. N, Cenko, S. B, Childress, M, Guhathakurta, P, Jiang, L, Kalirai, J. S, Kirshner, R. P, Stockton, A, Tollerud, E. J, Vinkó, J, Wheeler, J. C, Woo, J.-H

“…Supernova (SN) 2009ig was discovered 17 hr after explosion by the Lick Observatory Supernova Search, promptly classified as a normal Type Ia SN (SN Ia), peaked…”
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Deep MMT Transit Survey of the Open Cluster M37. I. Observations and Cluster Parameters by Hartman, J. D, Gaudi, B. S, Holman, M. J, McLeod, B. A, Stanek, K. Z, Barranco, J. A, Pinsonneault, M. H, Meibom, S, Kalirai, J. S

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On the radial distribution of white dwarfs in the globular cluster NGC 6397 by Davis, D. S., Richer, H. B., King, I. R., Anderson, J., Coffey, J., Fahlman, G. G., Hurley, J., Kalirai, J. S.

“…We have examined the radial distribution of white dwarfs over a single Hubble Space Telescope/Advanced Camera for Surveys field in the nearby globular cluster…”
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Kinematics and Metallicity of M31 Red Giants: The Giant Southern Stream and Discovery of a Second Cold Component at R = 20 kpc by Kalirai, Jasonjot S, Guhathakurta, Puragra, Gilbert, Karoline M, Reitzel, David B, Majewski, Steven R, Rich, R. Michael, Cooper, Michael C

“…We present spectroscopic observations of red giant branch (RGB) stars in the Andromeda spiral galaxy (M31), acquired with the DEIMOS instrument on the Keck II…”
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WHITE DWARF COSMOCHRONOLOGY IN THE SOLAR NEIGHBORHOOD by Tremblay, P.-E., Kalirai, J. S., Soderblom, D. R., Cignoni, M., Cummings, J.

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