18 research outputs found
The center-to-limb variation across the Fraunhofer lines of HD 189733; Sampling the stellar spectrum using a transiting planet
The center-to-limb variation (CLV) describes the brightness of the stellar
disk as a function of the limb angle. Across strong absorption lines, the CLV
can vary quite significantly. We obtained a densely sampled time series of
high-resolution transit spectra of the active planet host star HD 189733 with
UVES. Using the passing planetary disk of the hot Jupiter HD 189733 b as a
probe, we study the CLV in the wings of the Ca II H and K and Na I D1 and D2
Fraunhofer lines, which are not strongly affected by activity-induced
variability. In agreement with model predictions, our analysis shows that the
wings of the studied Fraunhofer lines are limb brightened with respect to the
(quasi-)continuum. The strength of the CLV-induced effect can be on the same
order as signals found for hot Jupiter atmospheres. Therefore, a careful
treatment of the wavelength dependence of the stellar CLV in strong absorption
lines is highly relevant in the interpretation of planetary transit
spectroscopy.Comment: Accepted in A&
YETI observations of the young transiting planet candidate CVSO 30 b
CVSO 30 is a unique young low-mass system, because, for the first time, a
close-in transiting and a wide directly imaged planet candidates are found
around a common host star. The inner companion, CVSO 30 b, is the first
possible young transiting planet orbiting a previously known weak-lined T-Tauri
star. With five telescopes of the 'Young Exoplanet Transit Initiative' (YETI)
located in Asia, Europe and South America we monitored CVSO 30 over three years
in a total of 144 nights and detected 33 fading events. In two more seasons we
carried out follow-up observations with three telescopes. We can confirm that
there is a change in the shape of the fading event between different
observations and that the fading event even disappears and reappears. A total
of 38 fading event light curves were simultaneously modelled. We derived the
planetary, stellar, and geometrical properties of the system and found them
slightly smaller but in agreement with the values from the discovery paper. The
period of the fading event was found to be 1.36 s shorter and 100 times more
precise than the previous published value. If CVSO 30 b would be a giant planet
on a precessing orbit, which we cannot confirm, yet, the precession period may
be shorter than previously thought. But if confirmed as a planet it would be
the youngest transiting planet ever detected and will provide important
constraints on planet formation and migration time-scales.Comment: 14 pages (20 with appendix), 7 figures (16 with appendix), 6 tables
(7 with appendix
Material insecurity predicts greater commitment to moralistic and less commitment to local deities: a cross-cultural investigation
The existential security hypothesis predicts that in the absence of more successful secular institutions, people will be attracted to religion when they are materially insecure. Most assessments, however, employ data sampled at a state-level with a focus on world religions. Using individual-level data collected in societies of varied community sizes with diverse religious traditions including animism, shamanism, polytheism, and monotheism, we conducted a systematic cross-cultural test (N = 1820; 14 societies) of the relationship between material insecurity (indexed by food insecurity) and religious commitment (indexed by both beliefs and practices). Moreover, we examined the relationship between material security and individuals’ commitment to two types of deities (moralistic and local), thus providing the first simultaneous test of the existential security hypothesis across co-existing traditions. Our results indicate that while material insecurity is associated with greater commitment to moralistic deities, it predicts less commitment to local deity traditions
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What Do Nonreligious Nonbelievers Believe in? Secular Worldviews Around the World
Includes supplementary materials.Understanding Unbelief RFP2 Early Career Award; Aarhus University Research Foundation; Finnish Cultural Foundation (grant number: 00180271)
Material insecurity predicts greater commitment to moralistic and less commitment to local deities: a cross-cultural investigation
Supplemental data for this article can be accessed at https://doi.org/10.1080/2153599X.2021.2006287.Copyright © 2022 The Author(s). The existential security hypothesis predicts that in the absence of more successful secular institutions, people will be attracted to religion when they are materially insecure. Most assessments, however, employ data sampled at a state-level with a focus on world religions. Using individual-level data collected in societies of varied community sizes with diverse religious traditions including animism, shamanism, polytheism, and monotheism, we conducted a systematic cross-cultural test (N = 1820; 14 societies) of the relationship between material insecurity (indexed by food insecurity) and religious commitment (indexed by both beliefs and practices). Moreover, we examined the relationship between material security and individuals’ commitment to two types of deities (moralistic and local), thus providing the first simultaneous test of the existential security hypothesis across co-existing traditions. Our results indicate that while material insecurity is associated with greater commitment to moralistic deities, it predicts less commitment to local deity traditions
Gender gap in parental leave intentions: Evidence from 37 countries
This is the final version. Available from Wiley via the DOI in this record. Despite global commitments and efforts, a gender-based division of paid and unpaid work persists. To
identify how psychological factors, national policies, and the broader sociocultural context contribute
to this inequality, we assessed parental-leave intentions in young adults (18–30years old) planning to
have children (N = 13,942; 8,880 identified as women; 5,062 identified as men) across 37 countries that
varied in parental-leave policies and societal gender equality. In all countries, women intended to take
longer leave than men. National parental-leave policies and women’s political representation partially
explained cross-national variations in the gender gap. Gender gaps in leave intentions were paradoxically
larger in countries with more gender-egalitarian parental-leave policies (i.e., longer leave available to
both fathers and mothers). Interestingly, this cross-national variation in the gender gap was driven by
cross-national variations in women’s (rather than men’s) leave intentions. Financially generous leave
and gender-egalitarian policies (linked to men’s higher uptake in prior research) were not associated with
leave intentions in men. Rather, men’s leave intentions were related to their individual gender attitudes.
Leave intentions were inversely related to career ambitions. The potential for existing policies to foster
gender equality in paid and unpaid work is discussed.SSHRC Insight Development GrantSSHRC Insight GrantEconomic and Social Research CouncilState Research AgencyGuangdong 13th-five Philosophy and Social Science Planning ProjectNational Natural Science Foundation of ChinaSwiss National Science FoundationSwiss National Science FoundationCenter for Social Conflict and Cohesion StudiesCenter for Intercultural and Indigenous ResearchSSHRC Postdoctoral FellowshipSlovak Research and Development AgencySwiss National Science FoundationCanada Research ChairsSocial Sciences and Humanities Research Council of CanadaOntario Ministry of Research and InnovationHSE University, RFFaculty of Arts, Masaryk Universit