Zobrazeno 1 - 10 of 49 pro vyhledávání: '"M. Daprà"'
1
Parallaxes of Southern Extremely Cool objects III: 118 L and T dwarfs
Autor: Mariateresa Crosta, Alexandre Humberto Andrei, J. L. Penna, D. N. da Silva Neto, D. J. Pinfield, Alessandro Sozzetti, Federico Marocco, Rene A. Mendez, M. Daprà, Alberto Vecchiato, R. Lachaume, Massimiliano Lattanzi, Julio Camargo, James S. Jenkins, Ben Burningham, Richard L. Smart, Beatrice Bucciarelli, V. A. d'Ávila, Bertrand Goldman, Hugh R. A. Jones
Publikováno v: Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, 481(3), 3548-3562. Oxford University Press
Smart, R L, Bucciarelli, B, Jones, H R A, Marocco, F, Andrei, A H, Goldman, B, Mendez, R A, d'Avila, V A, Burningham, B, Camargo, J I B, Crosta, M T, Daprà, M, Jenkins, J S, Lachaume, R, Lattanzi, M G, Penna, J L, Pinfield, D J, da Silva Neto, D N, Sozzetti, A & Vecchiato, A 2018, ' Parallaxes of Southern Extremely Cool objects III : 118 L and T dwarfs ', Monthly Notices of the Royal Astronomical Society, vol. 481, no. 3, pp. 3548-3562 . https://doi.org/10.1093/mnras/sty2520
We present new results from the Parallaxes of Southern Extremely Cool dwarfs program to measure parallaxes, proper motions and multi-epoch photometry of L and early T dwarfs. The observations were made on 108 nights over the course of 8 years using t
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::edf35c4ffaacb0cdc1c02b49152445a3
https://doi.org/10.1093/mnras/sty2520
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2
Analysis of carbon monoxide absorption at zabs ≃ 2.5 to constrain variation of the proton-to-electron mass ratio
Autor: M. Vonk, Michael T. Murphy, Wim Ubachs, Pasquier Noterdaeme, M. Daprà
Publikováno v: Mon.Not.Roy.Astron.Soc.
Mon.Not.Roy.Astron.Soc., 2017, 467 (4), pp.3848-3855. ⟨10.1093/mnras/stx331⟩
Dapra, M, Noterdaeme, P, Vonk, M, Murphy, M T & Ubachs, W 2017, ' Analysis of carbon monoxide absorption at zabs ≃ 2.5 to constrain variation of the proton-to-electron mass ratio ', Monthly Notices of the Royal Astronomical Society, vol. 467, no. 4, pp. 3848-3855 . https://doi.org/10.1093/mnras/stx331
Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2017, 467 (4), pp.3848-3855. ⟨10.1093/mnras/stx331⟩
Mon.Not.Roy.Astron.Soc., 2017, 467 (4), pp.3848-3855. 〈10.1093/mnras/stx331〉
Monthly Notices of the Royal Astronomical Society, 467(4), 3848-3855. Oxford University Press
Absorption by carbon monoxide in the spectrum of quasar SDSS J000015.16+004833.2 is investigated in order to derive a constraint on the temporal variation of the proton-to-electron mass ratio, mu. The spectrum was recorded using VLT/UVES, and it was
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dd2732ea110f9b5a6edfb8d299342a7e
https://hal.archives-ouvertes.fr/hal-01554688
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3
Constraint on a varying proton-to-electron mass ratio from H2 and HD absorption at zabs ≃ 2.34
Autor: M. Daprà, M. Van der Laan, Michael T. Murphy, Wim Ubachs
Publikováno v: Daprà, M, Laan, M, Murphy, M T & Ubachs, W 2017, ' Constraint on a varying proton-to-electron mass ratio from H 2 and HD absorption at z abs ≃ 2.34 ', Monthly Notices of the Royal Astronomical Society, vol. 465, no. 4, pp. 4057-4073 . https://doi.org/10.1093/mnras/stw3003
Monthly Notices of the Royal Astronomical Society, 465(4), 4057-4073. Oxford University Press
Monthly Notices of the Royal Astronomical Society
Molecular hydrogen absorption in the damped Lyman-alpha system at z = 2.34 towards quasar Q1232+082 is analyzed in order to derive a constraint on a possible temporal variation of the proton-to-electron mass ratio, mu, over cosmological timescales. S
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::15d455bbc98fe06eb92c2bbe5eae33aa
https://hdl.handle.net/1871.1/b9e1679a-2021-4e27-95d3-d2a824c1fb2d
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5
Testing the variability of the proton-to-electron mass ratio from observations of methanol in the dark cloud core L1498
Autor: Karl M. Menten, Carsten Henkel, A. V. Lapinov, M. Daprà, Wim Ubachs, S. A. Levshakov, Sebastien Muller, Hendrick L. Bethlem, Silvia Leurini
Publikováno v: Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, 472(4), 4434-4443. Oxford University Press
Dapra, M, Henkel, C, Levshakov, S A, Menten, K M, Muller, S, Bethlem, H L, Leurini, S, Lapinov, A V & Ubachs, W 2017, ' Testing the variability of the proton-to-electron mass ratio from observations of methanol in the dark cloud core L1498 ', Monthly Notices of the Royal Astronomical Society, vol. 472, no. 4, pp. 4434-4443 . https://doi.org/10.1093/mnras/stx2308
The dependence of the proton-to-electron mass ratio, mu, on the local matter density was investigated using methanol emission in the dense dark cloud core L1498. Towards two different positions in L1498, five methanol transitions were detected and an
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eb2405bf4df634c3437d8d1d501d54e5
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7
Robust Constraint on a Drifting Proton-to-Electron Mass Ratio atz=0.89from Methanol Observation at Three Radio Telescopes
Autor: M. Daprà, Karl M. Menten, Hendrick L. Bethlem, Paul Jansen, Sebastien Muller, Wim Ubachs, Christian Henkel, J. Bagdonaite
Publikováno v: Physical Review Letters. 111
A limit on a possible cosmological variation of the proton-to-electron mass ratio μ is derived from methanol (CH3OH) absorption lines in the benchmark PKS1830–211 lensing galaxy at redshift z=0.89 observed with the Effelsberg 100-m radio telescope
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4c9a44d53b3a3c226be8a4932dda2e6a
https://doi.org/10.1103/physrevlett.111.231101
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8
Robust constraint on a drifting proton-to-electron mass ratio at z=0.89 from methanol observation at three radio telescopes
Autor: J, Bagdonaite, M, Daprà, P, Jansen, H L, Bethlem, W, Ubachs, S, Muller, C, Henkel, K M, Menten
Publikováno v: Physical review letters. 111(23)
A limit on a possible cosmological variation of the proton-to-electron mass ratio μ is derived from methanol (CH3OH) absorption lines in the benchmark PKS1830-211 lensing galaxy at redshift z=0.89 observed with the Effelsberg 100-m radio telescope,
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::224783d57c46c97251cf91dde8804c0b
https://pubmed.ncbi.nlm.nih.gov/24476248
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10
CONSTRAINT ON A COSMOLOGICAL VARIATION IN THE PROTON-TO-ELECTRON MASS RATIO FROM ELECTRONIC CO ABSORPTION
Autor: M. Niu, Michael T. Murphy, Wim Ubachs, Edcel J. Salumbides, M. Daprà
Publikováno v: Astrophysical Journal, 826(2):192. IOP Publishing Ltd.
Dapra, M, Niu, M, Salumbides, E J, Murphy, M T & Ubachs, W M G 2016, ' constraint on a cosmological variation in the proton-to-electron mass ratio from electronic co absorption ', Astrophysical Journal, vol. 826, no. 2, 192 . https://doi.org/10.3847/0004-637X/826/2/192
The Astrophysical Journal
Carbon monoxide (CO) absorption in the sub-damped Lyman-$\alpha$ absorber at redshift $z_{abs} \simeq 2.69$, toward the background quasar SDSS J123714.60+064759.5 (J1237+0647), was investigated for the first time in order to search for a possible var
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9d9b6baff2bb9b1488ff0ccc75418834
https://doi.org/10.3847/0004-637x/826/2/192
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