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  • 1
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    The Edinburgh-Cape Blue Object Survey - III. Zone 2; galactic latitudes -30{degrees} 〉 b 〉 -40{degrees} (2013)
    Oxford University Press
    Details
    Publication Date: 2013-04-03
    Description: The Edinburgh–Cape Blue Object Survey seeks to identify point sources with an ultraviolet excess. Results for zone 2 of the survey are presented here, covering that part of the South Galactic Cap between 30° and 40° from the Galactic plane and south of about –12 ${^{\circ}_{.}}$ 3 of declination. Edinburgh–Cape zone 2 comprises 66 UK Schmidt Telescope fields covering about 1730 deg 2 , in which we find some 892 blue objects, including 423 hot subdwarfs (~47 per cent); 128 white dwarfs (~14 per cent); 25 cataclysmic variables (~3 per cent); 119 binaries (~13 per cent), mostly composed of a hot subdwarf and a main-sequence F or G star; 66 horizontal branch stars (~7 per cent) and 48 ‘star-like’ extragalactic objects (~5 per cent). A further 362 stars observed in the survey, mainly low-metallicity F- and G-type stars, are also listed. Both low-dispersion spectroscopic classification and UBV photometry are presented for almost all of the hot objects and either spectroscopy or photometry (or both) for the cooler ones.
    Print ISSN: 0035-8711
    Electronic ISSN: 1365-2966
    Topics: Physics
    Published by Oxford University Press
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  • 2
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    Direct detection of galactic halo dark matter (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-03-27
    Description: The Milky Way galaxy contains a large, spherical component which is believed to harbor a substantial amount of unseen matter. Recent observations indirectly suggest that as much as half of this "dark matter" may be in the form of old, very cool white dwarfs, the remnants of an ancient population of stars as old as the galaxy itself. We conducted a survey to find faint, cool white dwarfs with large space velocities, indicative of their membership in the galaxy's spherical halo component. The survey reveals a substantial, directly observed population of old white dwarfs, too faint to be seen in previous surveys. This newly discovered population accounts for at least 2 percent of the halo dark matter. It provides a natural explanation for the indirect observations, and represents a direct detection of galactic halo dark matter.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Oppenheimer, B R -- Hambly, N C -- Digby, A P -- Hodgkin, S T -- Saumon, D -- New York, N.Y. -- Science. 2001 Apr 27;292(5517):698-702. Epub 2001 Mar 22.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Astronomy Department, University of California-Berkeley, Berkeley, CA 94720-3411, USA. bro@astron.berkeley.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11264524" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 3
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    A luminous quasar at a redshift of z = 7.085 (2011)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2011-07-02
    Description: The intergalactic medium was not completely reionized until approximately a billion years after the Big Bang, as revealed by observations of quasars with redshifts of less than 6.5. It has been difficult to probe to higher redshifts, however, because quasars have historically been identified in optical surveys, which are insensitive to sources at redshifts exceeding 6.5. Here we report observations of a quasar (ULAS J112001.48+064124.3) at a redshift of 7.085, which is 0.77 billion years after the Big Bang. ULAS J1120+0641 has a luminosity of 6.3 x 10(13)L(middle dot in circle) and hosts a black hole with a mass of 2 x 10(9)M(middle dot in circle) (where L(middle dot in circle) and M(middle dot in circle) are the luminosity and mass of the Sun). The measured radius of the ionized near zone around ULAS J1120+0641 is 1.9 megaparsecs, a factor of three smaller than is typical for quasars at redshifts between 6.0 and 6.4. The near-zone transmission profile is consistent with a Lyalpha damping wing, suggesting that the neutral fraction of the intergalactic medium in front of ULAS J1120+0641 exceeded 0.1.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mortlock, Daniel J -- Warren, Stephen J -- Venemans, Bram P -- Patel, Mitesh -- Hewett, Paul C -- McMahon, Richard G -- Simpson, Chris -- Theuns, Tom -- Gonzales-Solares, Eduardo A -- Adamson, Andy -- Dye, Simon -- Hambly, Nigel C -- Hirst, Paul -- Irwin, Mike J -- Kuiper, Ernst -- Lawrence, Andy -- Rottgering, Huub J A -- England -- Nature. 2011 Jun 29;474(7353):616-9. doi: 10.1038/nature10159.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Astrophysics Group, Imperial College London, Blackett Laboratory, Prince Consort Road, London SW7 2AZ, UK. mortlock@ic.ac.uk)〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21720366" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 4
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    ANIMAL PHYSIOLOGY. Exceptionally low daily energy expenditure in the bamboo-eating giant panda (2015)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2015-07-15
    Description: The carnivoran giant panda has a specialized bamboo diet, to which its alimentary tract is poorly adapted. Measurements of daily energy expenditure across five captive and three wild pandas averaged 5.2 megajoules (MJ)/day, only 37.7% of the predicted value (13.8 MJ/day). For the wild pandas, the mean was 6.2 MJ/day, or 45% of the mammalian expectation. Pandas achieve this exceptionally low expenditure in part by reduced sizes of several vital organs and low physical activity. In addition, circulating levels of thyroid hormones thyroxine (T4) and triiodothyronine (T3) averaged 46.9 and 64%, respectively, of the levels expected for a eutherian mammal of comparable size. A giant panda-unique mutation in the DUOX2 gene, critical for thyroid hormone synthesis, might explain these low thyroid hormone levels. A combination of morphological, behavioral, physiological, and genetic adaptations, leading to low energy expenditure, likely enables giant pandas to survive on a bamboo diet.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nie, Yonggang -- Speakman, John R -- Wu, Qi -- Zhang, Chenglin -- Hu, Yibo -- Xia, Maohua -- Yan, Li -- Hambly, Catherine -- Wang, Lu -- Wei, Wei -- Zhang, Jinguo -- Wei, Fuwen -- New York, N.Y. -- Science. 2015 Jul 10;349(6244):171-4. doi: 10.1126/science.aab2413.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China. ; State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China. Institute of Biological and Environmental Sciences, University of Aberdeen, Aberdeen, Scotland, UK. ; Beijing Key Laboratory of Captive Wildlife Technologies, Beijing Zoo, Beijing, China. ; Institute of Biological and Environmental Sciences, University of Aberdeen, Aberdeen, Scotland, UK. ; State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China. ; Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China. weifw@ioz.ac.cn.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26160943" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Body Temperature ; Cattle ; Chromosomes, Human, Pair 15/genetics ; Diet/veterinary ; Dogs ; *Eating ; Energy Metabolism/genetics/*physiology ; Gastrointestinal Tract ; Genetic Variation ; Humans ; Mice ; Molecular Sequence Data ; Motor Activity ; NADPH Oxidase/*genetics ; Organ Size ; Sasa ; Thyroxine/blood ; Triiodothyronine/blood ; Ursidae/anatomy & histology/*genetics/*physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 5
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    The Edinburgh-Cape Blue Object Survey - IV. Zone 3: Galactic latitudes -40{degrees} 〉 b 〉 -50{degrees} (2015)
    Oxford University Press
    Details
    Publication Date: 2015-08-28
    Description: Results for Zone 3 of the Edinburgh-Cape (EC) Blue Object survey are presented. This zone covers that part of the South Galactic Cap between 40° and 50° from the Galactic plane and south of about –12 $_{.}^{\circ}$ 3 of declination. EC Zone 3 contains 53 UK Schmidt Telescope fields covering about 1400 deg 2 in which we find some 534 blue objects, including hot subdwarfs (~39 per cent), white dwarfs (~21 per cent), cataclysmic variables (~2 per cent) and some star-like galaxies (~9 per cent). A further 178 cooler stars observed in the survey, including low-metallicity F- and G-type stars, are also listed. Both low-dispersion spectroscopic classification and UBV photometry are presented for almost all of the hot objects and either spectroscopy or photometry (sometimes both) for the cooler ones.
    Print ISSN: 0035-8711
    Electronic ISSN: 1365-2966
    Topics: Physics
    Published by Oxford University Press
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  • 6
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    Limits to sustained energy intake XXIV: impact of suckling behaviour on the body temperatures of lactating female mice (2016)
    Springer Nature
    Details
    Publication Date: 2016-05-09
    Electronic ISSN: 2045-2322
    Topics: Natural Sciences in General
    Published by Springer Nature
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