Zobrazeno 1 - 10
of 310
pro vyhledávání: '"Allers K"'
Autor:
Allers, K. N., Liu, Michael C.
Publikováno v:
Publications of the Astronomical Society of the Pacific, 2020 Oct 01. 132(1016), 1-18.
Externí odkaz:
https://www.jstor.org/stable/26973316
PSO J318.5338$-$22.8603 is an extremely-red planetary-mass object that has been identified as a candidate member of the $\beta$ Pictoris moving group based on its spatial position and tangential velocity. We present a high resolution $K$-band spectru
Externí odkaz:
http://arxiv.org/abs/1601.04717
Autor:
Allers, K. N., Liu, Michael C.
We present additional analysis of the classification system presented in Allers & Liu (2013). We refer the reader to Allers & Liu (2013) for a detailed discussion of our near-IR spectral type and gravity classification system. Here, we address questi
Externí odkaz:
http://arxiv.org/abs/1307.7153
Autor:
Allers, K. N., Liu, Michael C.
Publikováno v:
Allers, K. N., & Liu, M. C. 2013, ApJ, 772, 79
We present a near-infrared (0.9-2.4 microns) spectroscopic study of 73 field ultracool dwarfs having spectroscopic and/or kinematic evidence of youth (~10-300 Myr). Our sample is composed of 48 low-resolution (R~100) spectra and 41 moderate-resolutio
Externí odkaz:
http://arxiv.org/abs/1305.4418
Publikováno v:
Astrophys.J. 715:561,2010; Astrophys.J.715:561-571,2010
We report discovery of a young 0.32" L dwarf binary, SDSS J2249+0044AB, found as the result of a Keck LGSAO imaging survey of young field brown dwarfs. Weak K, Na, and FeH features as well as strong VO absorption in the integrated-light J-band spectr
Externí odkaz:
http://arxiv.org/abs/0912.4687
Autor:
Allers, K. N., Liu, Michael C., Shkolnik, Evgenya, Cushing, Michael C., Dupuy, Trent J., Mathews, Geoffrey S., Reid, I. Neill, Cruz, Kelle L., Vacca, W. D.
Publikováno v:
Astrophys.J.697:824-835,2009
We report the discovery of a young, 0.16" binary, 2M2234+4041AB, found as the result of a Keck laser guide star adaptive optics imaging survey of young field ultracool dwarfs. Spatially resolved near-infrared photometry and spectroscopy indicate that
Externí odkaz:
http://arxiv.org/abs/0902.4742
We present high spatial resolution Submillimeter Array observations and supplementary single-dish photometry of the molecular gas and dust around IRAS 04158+2805, a young source with spectral type M5-M6 in the Taurus star-forming region. A bright, hi
Externí odkaz:
http://arxiv.org/abs/0806.4163
Autor:
Leggett, S. K., Saumon, D., Albert, Loic, Cushing, Michael. C., Liu, Michael C., Luhman, K. L., Marley, M. S., Kirkpatrick, J. Davy, Roellig, Thomas L., Allers, K. N.
Publikováno v:
Astrophys.J.682:1256-1263,2008
Luhman and collaborators recently discovered an early-T dwarf companion to the G0 dwarf star HN Peg, using Spitzer Infrared Array Camera (IRAC) images. Companionship was established on the basis of the common proper motion inferred from 1998 Two Micr
Externí odkaz:
http://arxiv.org/abs/0804.1386
Autor:
Luhman, K. L., Allers, K. N., Jaffe, D. T., Cushing, M. C., Williams, K. A., Slesnick, C. L., Vacca, W. D.
Publikováno v:
Astrophys.J.659:1629-1636,2007
We present an analysis of the mass and age of the young low-mass binary Oph 1622-2405. Using resolved optical spectroscopy of the binary, we measure spectral types of M7.25+/-0.25 and M8.75+/-0.25 for the A and B components, respectively. We show tha
Externí odkaz:
http://arxiv.org/abs/astro-ph/0701242
Autor:
Allers, K. N., Jaffe, D. T., Luhman, K. L., Liu, Michael C., Wilson, J. C., Skrutskie, M. F., Nelson, M., Peterson, D. E., Smith, J. D., Cushing, M. C.
Publikováno v:
Astrophys.J.657:511-520,2007
We present near-infrared (1.0-2.4 micron) spectra confirming the youth and cool effective temperatures of 6 brown dwarfs and low mass stars with circumstellar disks toward the Chamaeleon II and Ophiuchus star forming regions. The spectrum of one of o
Externí odkaz:
http://arxiv.org/abs/astro-ph/0611408