Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Nelson, Brant"'
Autor:
Masci, Frank, Cutri, Roc, Francis, Paul, Nelson, Brant, Huchra, John, Jones, D. Heath, Colless, Matthew, Saunders, Will
The Two Micron All-Sky Survey (2MASS) has provided a uniform photometric catalog to search for previously unknown red AGN and QSOs. We have extended the search to the southern equatorial sky by obtaining spectra for 1182 AGN candidates using the 6dF
Externí odkaz:
http://arxiv.org/abs/1007.1676
Autor:
Kuraszkiewicz, Joanna, Wilkes, Belinda J., Schmidt, Gary, Ghosh, Himel, Smith, Paul S., Cutri, Roc, Hines, Dean, Huff, Eric M., McDowell, Jonathan C., Nelson, Brant
Publikováno v:
Astrophys.J.692:1143-1179,2009
We present infrared (IR) to X-ray spectral energy distributions (SEDs) for 44 red AGN selected from the 2MASS survey on the basis of their red J-K$_S$ color (>2 mag) and later observed by Chandra. In comparison with optically-, radio-, and X-ray sele
Externí odkaz:
http://arxiv.org/abs/0810.5704
(Abridged) We present an unbiassed near-IR selected AGN sample, covering 12.56 square degrees down to K ~ 15.5, selected from the Two Micron All Sky Survey (2MASS). Our only selection effect is a moderate color cut (J-K>1.2) designed to reduce contam
Externí odkaz:
http://arxiv.org/abs/astro-ph/0310396
Autor:
Marble, Andrew R., Hines, Dean C., Schmidt, Gary D., Smith, Paul S., Surace, Jason A., Armus, Lee, Cutri, Roc M., Nelson, Brant O.
Publikováno v:
Astrophys.J. 590 (2003) 707-729
Using simple infrared color selection, 2MASS has found a large number of red, previously unidentified, radio-quiet QSOs. Although missed by UV/optical surveys, the 2MASS QSOs have K-band luminosities that are comparable to "classical" QSOs. This sugg
Externí odkaz:
http://arxiv.org/abs/astro-ph/0303184
Autor:
Wilkes, Belinda J., Schmidt, Gary D., Cutri, Roc M., Ghosh, Himel, Hines, Dean C., Nelson, Brant, Smith, Paul
The Two Micron All Sky Survey (2MASS) is finding previously unidentified, luminous red active galactic nuclei (AGN). This new sample has a space density similar to, or greater than, previously known AGN, suggesting that a large fraction of the overal
Externí odkaz:
http://arxiv.org/abs/astro-ph/0112433
Autor:
Kirkpatrick, J. Davy, Reid, I. Neill, Liebert, James, Gizis, John E., Burgasser, Adam J., Monet, David G., Dahn, Conard C., Nelson, Brant, Williams, Rik J.
Publikováno v:
Astron.J.120:447,2000
We present JHKs photometry, far red spectra, and spectral classifications for an additional 67 L dwarfs discovered by the Two Micron All Sky Survey. One of the goals of this new search was to locate more examples of the latest L dwarfs. Of the 67 new
Externí odkaz:
http://arxiv.org/abs/astro-ph/0003317
Autor:
Liebert, James, Cutri, Roc M., Nelson, Brant, Kirkpatrick, J. Davy, Gizis, John E., Reid, I. N.
Publikováno v:
Publications of the Astronomical Society of the Pacific, 2000 Oct . 112(776), 1315-1319.
Externí odkaz:
https://www.jstor.org/stable/10.1086/316627
Publikováno v:
Publications of the Astronomical Society of the Pacific, 1997 May 01. 109(735), 600-608.
Externí odkaz:
https://www.jstor.org/stable/40680933
Autor:
Nelson, Brant Owen
Publikováno v:
Publications of the Astronomical Society of the Pacific, 1997 Mar 01. 109(733), 342-342.
Externí odkaz:
https://www.jstor.org/stable/40680909
Autor:
Sykes, Mark V., Nelson, Brant, Cutri, Roc M., Kirkpatrick, Davy J., Hurt, Robert, Skrutskie, Michael F.
Publikováno v:
In Icarus 2000 143(2):371-375