Records |
Author |
Viblanc Va, Stier A, Bize P, Schull Q, Criscuolo F, Groscolas R, Robin Jp |
Title |
The ecophysiology of king penguins : responses to a fluctuating environment |
Type |
Book Chapter |
Year |
2021 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
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Keywords |
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Abstract |
Penguins are sea...birds. These highly evolved marine predators thrive in the oceanic habitat. Yet, they are conflicted – confronted to the duality of a life spent partly at sea, partly on-land. This life style has them subject to a number of very different ecological pressures. The ECONERGY polar project (IPEV #119) seeks to understand how king penguin cope with the constraints they face while living on-land, and the underlying physiological adaptations that allow them to do so. This includes studies dealing with fasting, parasites, predators, aggressive neighbors, climate and human disturbance. I will present some of the advances our project has made over the past decades, and where we will proceed in the years to come with a new project. We aim to understand bird stress from an integrative perspective, building a long-term observatory of penguin physiological responses to a changing world, and determining how breeding performances on land and foraging performances at sea are related. |
Programme |
119 |
Campaign |
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Address |
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Corporate Author |
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Thesis |
Bachelor's thesis |
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Conference |
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Notes |
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Approved |
yes |
Call Number |
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Serial |
8106 |
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Author |
Lemonnier C, Schull Q, Stier A, Boonstra R, Delahanty B, Lefol E, Durand L, Robin Jp, Criscuolo F, Bize P, Viblanc Va |
Title |
Coping with socially stressful environments in colonial seabirds: a test of adaptive phenotype programming in king penguins |
Type |
Peer-reviewed symposium |
Year |
2021 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
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Keywords |
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Abstract |
Coloniality is associated with various benefits and costs for animals affecting their fitness. Breeding colonies are heterogeneous both in terms of physical and social parameters, thus, breeding territories are of different quality relative to their location within the colony. In king penguins, increased conspecific density has been correlated with increased stress level in individual birds, suggesting a cost of colonial breeding. We used a cross-fostering approach to question the relationship linking breeding location, phenotype and reproduction success. We crossfostered eggs shortly after laying within and between high-and low-density colony areas. This design allowed us to unravel the influences of early genetic and maternal effects together with rearing environments on chick growth trajectories, stress physiology and survival. We tested whether chick phenotype is determined at birth to match their early environment or if higher social density conferred an advantage for reproduction. |
Programme |
119 |
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Address |
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Thesis |
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Place of Publication |
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Summary Language |
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Original Title |
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Series Title |
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Series Volume |
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Edition |
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ISSN |
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ISBN |
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Expedition |
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Conference |
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Notes |
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Approved |
yes |
Call Number |
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Serial |
8105 |
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Author |
Stier A, Lewden A, Ruuskanen S, Noiret A, Angelier F, Robin Jp, Bize P, Raclot T, Roussel D, Ropert-coudert Y, Viblanc Va |
Title |
HotPenguin : cool in the water, too hot on land ? Risks and consequences of heat stress in penguins facing climate change |
Type |
Peer-reviewed symposium |
Year |
2021 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
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Keywords |
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Abstract |
Animals from polar regions have evolved highly specialized adaptations to cope with cold climates, which put them at risk regarding the current rapid climate change. This is especially true for penguins who live most of the year in cold water, but breed on land in the spring/summer. Penguins are thereby likely to be threatened by periods of unusually warm temperatures on land. While heat stress is increasingly studied in warm regions, few studies have investigated whether heat stress could occur in polar regions, and to what extent it could affect individual health and reproduction. My aim is to fill this knowledge gap by leading a collaborative research project taking an integrative approach, from animal behavior to the sub-cellular level. This project aims at helping to better predict how penguin populations will respond to future climate change, and raise awareness of scientists, stakeholders and the general public towards an under-appreciated risk of climate change in polar regions. |
Programme |
119 |
Campaign |
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Address |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
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Summary Language |
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Original Title |
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Edition |
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ISSN |
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ISBN |
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Medium |
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Area |
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Expedition |
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Conference |
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Notes |
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Approved |
yes |
Call Number |
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Serial |
8107 |
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Author |
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Title |
The biology and feeding ecology of Arctic charr in the Kerguelen Islands |
Type |
Journal |
Year |
2021 |
Publication |
Journal of Fish Biology |
Abbreviated Journal |
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Volume |
98 |
Issue |
2 |
Pages |
526-536 |
Keywords |
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Abstract |
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Programme |
1041 |
Campaign |
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Address |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
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Summary Language |
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Original Title |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
1095-8649 |
ISBN |
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Medium |
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Area |
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Expedition |
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Conference |
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Notes |
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Approved |
yes |
Call Number |
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Serial |
8178 |
Permanent link to this record |
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Author |
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Title |
Using Reciprocal Transplants to Assess Local Adaptation, Genetic Rescue, and Sexual Selection in Newly Established Populations |
Type |
Journal |
Year |
2021 |
Publication |
Genes |
Abbreviated Journal |
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Volume |
12 |
Issue |
1 |
Pages |
5 |
Keywords |
gene flow genetic rescue local adaptation mating success small population |
Abstract |
Small populations establishing on colonization fronts have to adapt to novel environments with limited genetic variation. The pace at which they can adapt, and the influence of genetic variation on their success, are key questions for understanding intraspecific diversity. To investigate these topics, we performed a reciprocal transplant experiment between two recently founded populations of brown trout in the sub-Antarctic Kerguelen Islands. Using individual tagging and genetic assignment methods, we tracked the fitness of local and foreign individuals, as well as the fitness of their offspring over two generations. In both populations, although not to the same extent, gene flow occurred between local and foreign gene pools. In both cases, however, we failed to detect obvious footprints of local adaptation (which should limit gene flow) and only weak support for genetic rescue (which should enhance gene flow). In the population where gene flow from foreign individuals was low, no clear differences were observed between the fitness of local, foreign, and F1 hybrid individuals. In the population where gene flow was high, foreign individuals were successful due to high mating success rather than high survival, and F1 hybrids had the same fitness as pure local offspring. These results suggest the importance of considering sexual selection, rather than just local adaptation and genetic rescue, when evaluating the determinants of success in small and recently founded populations. |
Programme |
1041 |
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Edition |
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ISSN |
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Area |
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Expedition |
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Conference |
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Notes |
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Approved |
yes |
Call Number |
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Serial |
8179 |
Permanent link to this record |
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Author |
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Title |
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Type |
Journal |
Year |
2021 |
Publication |
Antarctic Science |
Abbreviated Journal |
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Volume |
33 |
Issue |
1 |
Pages |
103-115 |
Keywords |
Antarctic Cold Reversal glacier fluctuations Holocene in situ cosmogenic chlorine-36 dating palaeoclimate sub-Antarctic |
Abstract |
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Programme |
1048 |
Campaign |
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Address |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
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Editor |
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Language |
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Summary Language |
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Original Title |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
0954-1020, 1365-2079 |
ISBN |
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Medium |
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Area |
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Expedition |
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Conference |
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Notes |
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Approved |
yes |
Call Number |
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Serial |
8186 |
Permanent link to this record |
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Author |
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Title |
Evolution of the Cook Ice Cap (Kerguelen Islands) between the last centuries and 2100 ce based on cosmogenic dating and glacio-climatic modelling |
Type |
Journal |
Year |
2021 |
Publication |
Antarctic Science |
Abbreviated Journal |
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Volume |
33 |
Issue |
3 |
Pages |
301-317 |
Keywords |
degree-day glaciological model future projections glacial fluctuations in situ cosmogenic chlorine-36 dating moraines sub-Antarctic islands |
Abstract |
The Cook Ice Cap (CIC) on the sub-Antarctic Kerguelen Islands recently experienced extremely negative surface mass balance. Further deglaciation could have important impacts on endemic and invasive fauna and flora. To put this exceptional glacier evolution into a multi-centennial-scale context, we refined the evolution of the CIC over the last millennium, investigated the associated climate conditions and explored its potential evolution by 2100 ce. A glaciological model, constrained by cosmic ray exposure dating of moraines, historical documents and recent direct mass balance observations, was used to simulate the ice-cap extents during different phases of advance and retreat between the last millennium and 2100 ce. Cosmogenic dating suggests glacial advance around the early Little Ice Age (LIA), consistent with findings from other sub-Antarctic studies, and the rather cold and humid conditions brought about by the negative phase of the Southern Annular Mode (SAM). This study contributes to our currently limited understanding of palaeoclimate for the early LIA in the southern Indian Ocean. Glaciological modelling and observations confirm the recent decrease in CIC extent linked to the intensification of the SAM. Although affected by large uncertainties, future simulations suggest a complete disappearance of CIC by the end of the century. |
Programme |
1048 |
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Address |
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Thesis |
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Publisher |
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Place of Publication |
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Editor |
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Summary Language |
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Original Title |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
0954-1020, 1365-2079 |
ISBN |
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Medium |
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Area |
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Expedition |
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Conference |
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Notes |
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Approved |
yes |
Call Number |
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Serial |
8187 |
Permanent link to this record |
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Author |
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Title |
Precise Transit and Radial-velocity Characterization of a Resonant Pair: The Warm Jupiter TOI-216c and Eccentric Warm Neptune TOI-216b |
Type |
Journal |
Year |
2021 |
Publication |
The Astronomical Journal |
Abbreviated Journal |
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Volume |
161 |
Issue |
4 |
Pages |
161 |
Keywords |
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Abstract |
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Programme |
1066 |
Campaign |
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Address |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
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Editor |
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Summary Language |
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Original Title |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
1538-3881 |
ISBN |
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Medium |
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Area |
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Expedition |
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Conference |
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Notes |
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Approved |
yes |
Call Number |
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Serial |
8194 |
Permanent link to this record |
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Author |
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Title |
The ? Pictoris b Hill sphere transit campaign – I. Photometric limits to dust and rings |
Type |
Journal |
Year |
2021 |
Publication |
Astronomy & Astrophysics |
Abbreviated Journal |
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Volume |
648 |
Issue |
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Pages |
A15 |
Keywords |
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Abstract |
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Programme |
1066 |
Campaign |
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Address |
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Corporate Author |
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Place of Publication |
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Original Title |
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Series Editor |
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Series Issue |
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Edition |
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ISSN |
0004-6361, 1432-0746 |
ISBN |
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Medium |
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Area |
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Expedition |
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Conference |
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Notes |
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Approved |
yes |
Call Number |
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Serial |
8195 |
Permanent link to this record |
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Author |
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Title |
TOI-1231 b: A Temperate, Neptune-sized Planet Transiting the Nearby M3 Dwarf NLTT 24399 |
Type |
Journal |
Year |
2021 |
Publication |
The Astronomical Journal |
Abbreviated Journal |
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Volume |
162 |
Issue |
3 |
Pages |
87 |
Keywords |
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Abstract |
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Programme |
1066 |
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Address |
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Corporate Author |
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Publisher |
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Place of Publication |
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Editor |
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Summary Language |
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Original Title |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
1538-3881 |
ISBN |
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Medium |
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Area |
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Expedition |
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Conference |
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Notes |
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Approved |
yes |
Call Number |
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Serial |
8196 |
Permanent link to this record |