Abstract:
:Using numerical simulation, Holmström et al. proposed a plausible alternative explanation of the observed Lyman-alpha absorption that was seen during the transit of HD 209458b (ref. 2). They conclude that radiation pressure alone cannot explain the observations and that a peculiar stellar wind is needed. Here we show that radiation pressure alone can in fact produce the observed high-velocity hydrogen atoms. We also emphasize that even if the stellar wind is responsible for the observed hydrogen, to have a sufficient number of atoms for charge exchange with stellar wind, the energetic neutral atom (ENA) model also needs a significant escape from the planet atmosphere of similar amplitude as quoted in ref. 2.
journal_name
Naturejournal_title
Natureauthors
Lecavelier des Etangs A,Vidal-Madjar A,Désert JMdoi
10.1038/nature07402subject
Has Abstractpub_date
2008-11-13 00:00:00pages
E1; discussion E1-2issue
7219eissn
0028-0836issn
1476-4687pii
nature07402journal_volume
456pub_type
评论,杂志文章相关文献
NATURE文献大全abstract:: ...
journal_title:Nature
pub_type: 新闻
doi:10.1038/d41586-018-07706-1
更新日期:2018-12-01 00:00:00
abstract::Retrospective epidemiological data have indicated that cutaneous malignant melanoma may arise as a consequence of intense, intermittent exposure of the skin to ultraviolet radiation, particularly in children, rather than from the cumulative lifetime exposure that is associated with other forms of skin cancer. Here we ...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/35095108
更新日期:2001-09-20 00:00:00
abstract::Translation initiation determines both the quantity and identity of the protein that is encoded in an mRNA by establishing the reading frame for protein synthesis. In eukaryotic cells, numerous translation initiation factors prepare ribosomes for polypeptide synthesis; however, the underlying dynamics of this process ...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/s41586-019-1561-0
更新日期:2019-09-01 00:00:00
abstract::The ability to pattern surfaces on a microscopic length scale is of importance for technological applications such as the fabrication of microelectronic circuits and digital storage media. Devices fabricated entirely from polymers are now available, opening up the possibility of adapting polymer processing technologie...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/35006597
更新日期:2000-03-30 00:00:00
abstract:: ...
journal_title:Nature
pub_type: 新闻
doi:10.1038/d41586-018-07356-3
更新日期:2018-11-01 00:00:00
abstract::Arteries and veins are morphologically, functionally and molecularly very different, but how this distinction is established during vasculogenesis is unknown. Here we show, by lineage tracking in zebrafish embryos, that angioblast precursors for the trunk artery and vein are spatially mixed in the lateral posterior me...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/35102599
更新日期:2001-11-08 00:00:00
abstract::The hope that hybridoma antibodies would reveal unique cell surface antigens during embryogenesis, differentiation and oncogenesis has been replaced by the realization that such antigens are mainly carbohydrate structures of glycoproteins and glycolipids occurring in many cell types. These findings either may reflect ...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/314053a0
更新日期:1985-03-07 00:00:00
abstract::'Long' gamma-ray bursts (GRBs) are commonly accepted to originate in the explosion of particularly massive stars, which give rise to highly relativistic jets. Inhomogeneities in the expanding flow result in internal shock waves that are believed to produce the gamma-rays we see. As the jet travels further outward into...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/nature03934
更新日期:2005-08-18 00:00:00
abstract::The M13 coat protein spans the Escherichia coli plasma membrane with its amino-terminus facing the periplasm. It is made as a precursor--the procoat--with a typical leader peptide. Mutations which destroy the basic character of the carboxy-terminal domain of procoat, a domain which is oriented towards the cytoplasm, b...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/322335a0
更新日期:1986-07-24 00:00:00
abstract::Nitrogen (N) limits the productivity of many ecosystems worldwide, thereby restricting the ability of terrestrial ecosystems to offset the effects of rising atmospheric CO(2) emissions naturally. Understanding input pathways of bioavailable N is therefore paramount for predicting carbon (C) storage on land, particular...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/nature10415
更新日期:2011-08-31 00:00:00
abstract::The study of the extent and basis of gene-enzyme variation has long been a principal concern of population genetics. Numerous surveys have indicated considerable amounts of genetic variation detectable in natural populations, with few exceptions. The variances of average heterozygosities (H) between species and among ...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/288580a0
更新日期:1980-12-11 00:00:00
abstract::Water masers are found in dense molecular clouds closely associated with supermassive black holes at the centres of active galaxies. On the basis of the understanding of the local water-maser luminosity function, it was expected that masers at intermediate and high redshifts would be extremely rare. However, galaxies ...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/nature07544
更新日期:2008-12-18 00:00:00
abstract::The X-ray structure of a pentameric ligand-gated ion channel from Erwinia chrysanthemi (ELIC) has recently provided structural insight into this family of ion channels at high resolution. The structure shows a homo-pentameric protein with a barrel-stave architecture that defines an ion-conduction pore located on the f...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/nature07461
更新日期:2009-01-01 00:00:00
abstract::The Pax-6 transcription-factor gene, containing a paired domain and a paired-type homeodomain, is conserved in structure and ubiquitously present among Metazoa. It is required for development of the central nervous system, and is mutated in human aniridia, mouse and rat small eye and Drosophila eyeless. We identified ...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/377055a0
更新日期:1995-09-07 00:00:00
abstract::At birth the trans-placental nutrient supply is suddenly interrupted, and neonates face severe starvation until supply can be restored through milk nutrients. Here, we show that neonates adapt to this adverse circumstance by inducing autophagy. Autophagy is the primary means for the degradation of cytoplasmic constitu...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/nature03029
更新日期:2004-12-23 00:00:00
abstract::The versatility of Ca2+ signals derives from their spatio-temporal organization. For Ca2+ signals initiated by inositol-1,4,5-trisphosphate (InsP3), this requires local interactions between InsP3 receptors (InsP3Rs) mediated by their rapid stimulation and slower inhibition\ by cytosolic Ca2+. This allows hierarchical ...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/nature07763
更新日期:2009-04-02 00:00:00
abstract::The extreme resistance of bacterial endospores to heat may result from dehydration of the central protoplast brought about and maintained by osmotic activity of expanded electronegative peptidoglycan polymer, and positively charged counterions associated with it, in the surrounding cortex. The cortex may thus act as a...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/258402a0
更新日期:1975-12-04 00:00:00
abstract::Angiosperms developed floral nectaries that reward pollinating insects. Although nectar function and composition have been characterized, the mechanism of nectar secretion has remained unclear. Here we identify SWEET9 as a nectary-specific sugar transporter in three eudicot species: Arabidopsis thaliana, Brassica rapa...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/nature13082
更新日期:2014-04-24 00:00:00
abstract:: ...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/d41586-018-07511-w
更新日期:2018-11-01 00:00:00
abstract::An important step towards understanding the molecular basis of the functional diversity of voltage-gated K+ channels in the mammalian brain has been the discovery of a family of genes encoding rat brain K+ channel-forming (RCK) proteins. All species of these RCK proteins form homomultimeric voltage-gated K+ channels w...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/345535a0
更新日期:1990-06-07 00:00:00
abstract::p97 is a 97,000 molecular weight cell-surface glycoprotein, which is present in human melanomas but in only trace amounts in normal adult tissues. Amino acid sequence and iron binding studies have shown that p97 is structurally and functionally related to transferrin. Reports that the genes for the transferrin recepto...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/303070a0
更新日期:1983-05-05 00:00:00
abstract::The Earth's convecting upper mantle can be viewed as comprising three main reservoirs, beneath the Pacific, Atlantic and Indian oceans. Because of the uneven global distribution and migration of ridges and subduction zones, the surface area of the Pacific reservoir is at present contracting at about 0.6 km2 x y(r-1), ...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/35068542
更新日期:2001-03-22 00:00:00
abstract::In Dictyostelium discoideum, carbohydrate binding proteins (CBPs) or lectins have been implicated in the molecular basis of cellular cohesion. To determine the role of these CBPs, we have attempted to isolate structural gene mutants in which the CBPs have a defective affinity for carbohydrate ligands. We now report th...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/279215a0
更新日期:1979-05-17 00:00:00
abstract::Particle acceleration based on high intensity laser systems (a process known as laser-plasma acceleration) has achieved high quality particle beams that compare favourably with conventional acceleration techniques in terms of emittance, brightness and pulse duration. A long-term difficulty associated with laser-plasma...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/nature04492
更新日期:2006-01-26 00:00:00
abstract::Transcriptional activator proteins (activators) function, at least in part, by increasing preinitiation complex assembly (for reviews see refs 1-4). Previous studies have shown that an acidic activator forms a contact with the general transcription factor TFIIB (refs 5-7) and recruits it into the preinitiation complex...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/371717a0
更新日期:1994-10-20 00:00:00
abstract::During intracellular Ca2+ signalling mitochondria accumulate significant amounts of Ca2+ from the cytosol. Mitochondrial Ca2+ uptake controls the rate of energy production, shapes the amplitude and spatio-temporal patterns of intracellular Ca2+ signals, and is instrumental to cell death. This Ca2+ uptake is undertaken...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/nature02246
更新日期:2004-01-22 00:00:00
abstract::In developed societies, chronic diseases such as diabetes, obesity, atherosclerosis and cancer are responsible for most deaths. These ailments have complex causes involving genetic, environmental and nutritional factors. There is evidence that a group of closely related nuclear receptors, called peroxisome proliferato...
journal_title:Nature
pub_type: 杂志文章,评审
doi:10.1038/35013000
更新日期:2000-05-25 00:00:00
abstract::Interfaces in heterostructures have been a key point of interest in condensed-matter physics for decades owing to a plethora of distinctive phenomena-such as rectification1, the photovoltaic effect2, the quantum Hall effect3 and high-temperature superconductivity4-and their critical roles in present-day technical devi...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/s41586-020-2602-4
更新日期:2020-08-01 00:00:00
abstract::The vasopressor angiotensin II regulates vascular contractility and blood pressure through binding to type 1 angiotensin II receptors (AT1; refs 1, 2). Bradykinin, a vasodepressor, is a functional antagonist of angiotensin II (ref. 3). The two hormone systems are interconnected by the angiotensin-converting enzyme, wh...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/35024095
更新日期:2000-09-07 00:00:00
abstract::Speciation in many animal taxa is catalysed by the evolutionary diversification of mating signals. According to classical theories of speciation, mating signals diversify, in part, as an incidental byproduct of adaptation by natural selection to divergent ecologies, although empirical evidence in support of this hypot...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/35051570
更新日期:2001-01-11 00:00:00