FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2772387674> ?p ?o ?g. }

• W2772387674 abstract "Recent Kepler photometry has revealed that about half of white dwarfs (WDs) have periodic, low-level (~ 1e-4 - 1e-3), optical variations. Hubble Space Telescope (HST) ultraviolet spectroscopy has shown that up to about one half of WDs are actively accreting rocky planetary debris, as evidenced by the presence of photospheric metal absorption lines. We have obtained HST ultraviolet spectra of seven WDs that have been monitored for periodic variations, to test the hypothesis that these two phenomena are causally connected, i.e. that the optical periodic modulation is caused by WD rotation coupled with an inhomogeneous surface distribution of accreted metals. We detect photospheric metals in four out of the seven WDs. However, we find no significant correspondence between the existence of optical periodic variability and the detection of photospheric ultraviolet absorption lines. Thus the null hypothesis stands, that the two phenomena are not directly related. Some other source of WD surface inhomogeneity, perhaps related to magnetic field strength, combined with the WD rotation, or alternatively effects due to close binary companions, may be behind the observed optical modulation. We report the marginal detection of molecular hydrogen in WD J1949+4734, only the fourth known WD with detected H_2 lines. We also re-classify J1926+4219 as a carbon-rich He-sdO subdwarf." @default.
• W2772387674 created "2017-12-22" @default.
• W2772387674 creator A5008644041 @default.
• W2772387674 creator A5024184752 @default.
• W2772387674 creator A5031123948 @default.
• W2772387674 creator A5040287181 @default.
• W2772387674 creator A5040946565 @default.
• W2772387674 creator A5041775465 @default.
• W2772387674 creator A5069415101 @default.
• W2772387674 creator A5075607587 @default.
• W2772387674 creator A5077753420 @default.
• W2772387674 creator A5080522773 @default.
• W2772387674 creator A5082218022 @default.
• W2772387674 creator A5083799931 @default.
• W2772387674 date "2018-01-31" @default.
• W2772387674 modified "2023-10-02" @default.
• W2772387674 title "Periodic optical variability and debris accretion in white dwarfs: a test for a causal connection*" @default.
• W2772387674 cites W1971589421 @default.
• W2772387674 cites W1988119723 @default.
• W2772387674 cites W2002175961 @default.
• W2772387674 cites W2007323734 @default.
• W2772387674 cites W2011457521 @default.
• W2772387674 cites W2014744793 @default.
• W2772387674 cites W2016881231 @default.
• W2772387674 cites W2024909325 @default.
• W2772387674 cites W2025467069 @default.
• W2772387674 cites W2028678583 @default.
• W2772387674 cites W2031741877 @default.
• W2772387674 cites W2032078700 @default.
• W2772387674 cites W2033009260 @default.
• W2772387674 cites W2034761906 @default.
• W2772387674 cites W2041459294 @default.
• W2772387674 cites W2058662224 @default.
• W2772387674 cites W2062143840 @default.
• W2772387674 cites W2070508637 @default.
• W2772387674 cites W2085461867 @default.
• W2772387674 cites W2088881159 @default.
• W2772387674 cites W2090758339 @default.
• W2772387674 cites W2100399270 @default.
• W2772387674 cites W2101439538 @default.
• W2772387674 cites W2120176236 @default.
• W2772387674 cites W2121827652 @default.
• W2772387674 cites W2130754528 @default.
• W2772387674 cites W2137379633 @default.
• W2772387674 cites W2143051755 @default.
• W2772387674 cites W2161446861 @default.
• W2772387674 cites W2167434382 @default.
• W2772387674 cites W2175046768 @default.
• W2772387674 cites W2218779074 @default.
• W2772387674 cites W2275237310 @default.
• W2772387674 cites W2339079830 @default.
• W2772387674 cites W2528397023 @default.
• W2772387674 cites W2576839087 @default.
• W2772387674 cites W2586861863 @default.
• W2772387674 cites W2762265283 @default.
• W2772387674 cites W2899497983 @default.
• W2772387674 cites W3098708785 @default.
• W2772387674 cites W3099361087 @default.
• W2772387674 cites W3099448962 @default.
• W2772387674 cites W3099520098 @default.
• W2772387674 cites W3099616188 @default.
• W2772387674 cites W3099993937 @default.
• W2772387674 cites W3100240656 @default.
• W2772387674 cites W3100518635 @default.
• W2772387674 cites W3102366016 @default.
• W2772387674 cites W3102426331 @default.
• W2772387674 cites W3102548104 @default.
• W2772387674 cites W3102771817 @default.
• W2772387674 cites W3102813487 @default.
• W2772387674 cites W3103164019 @default.
• W2772387674 cites W3104650845 @default.
• W2772387674 cites W3105673385 @default.
• W2772387674 cites W3106187084 @default.
• W2772387674 cites W3123592044 @default.
• W2772387674 cites W3123841297 @default.
• W2772387674 cites W4293438942 @default.
• W2772387674 doi "https://doi.org/10.1093/mnras/sty257" @default.
• W2772387674 hasPublicationYear "2018" @default.
• W2772387674 type Work @default.
• W2772387674 sameAs 2772387674 @default.
• W2772387674 citedByCount "7" @default.
• W2772387674 countsByYear W27723876742018 @default.
• W2772387674 countsByYear W27723876742019 @default.
• W2772387674 countsByYear W27723876742020 @default.
• W2772387674 countsByYear W27723876742021 @default.
• W2772387674 countsByYear W27723876742023 @default.
• W2772387674 crossrefType "journal-article" @default.
• W2772387674 hasAuthorship W2772387674A5008644041 @default.
• W2772387674 hasAuthorship W2772387674A5024184752 @default.
• W2772387674 hasAuthorship W2772387674A5031123948 @default.
• W2772387674 hasAuthorship W2772387674A5040287181 @default.
• W2772387674 hasAuthorship W2772387674A5040946565 @default.
• W2772387674 hasAuthorship W2772387674A5041775465 @default.
• W2772387674 hasAuthorship W2772387674A5069415101 @default.
• W2772387674 hasAuthorship W2772387674A5075607587 @default.
• W2772387674 hasAuthorship W2772387674A5077753420 @default.
• W2772387674 hasAuthorship W2772387674A5080522773 @default.
• W2772387674 hasAuthorship W2772387674A5082218022 @default.
• W2772387674 hasAuthorship W2772387674A5083799931 @default.
• W2772387674 hasBestOaLocation W27723876742 @default.

• next