Home > Publications database > An Angular Diameter Measurement of $\beta$ UMa via Stellar Intensity Interferometry with the VERITAS Observatory > print |
001 | 601892 | ||
005 | 20241201104821.0 | ||
024 | 7 | _ | |a VERITAS:2024quv |2 INSPIRETeX |
024 | 7 | _ | |a inspire:2743133 |2 inspire |
024 | 7 | _ | |a arXiv:2401.01853 |2 arXiv |
024 | 7 | _ | |a 10.3204/PUBDB-2024-00404 |2 datacite_doi |
037 | _ | _ | |a PUBDB-2024-00404 |
041 | _ | _ | |a English |
088 | _ | _ | |a arXiv:2401.01853 |2 arXiv |
100 | 1 | _ | |a Acharyya, A. |b 0 |
245 | _ | _ | |a An Angular Diameter Measurement of $\beta$ UMa via Stellar Intensity Interferometry with the VERITAS Observatory |
260 | _ | _ | |c 2023 |
336 | 7 | _ | |a Preprint |b preprint |m preprint |0 PUB:(DE-HGF)25 |s 1706267516_2995828 |2 PUB:(DE-HGF) |
336 | 7 | _ | |a WORKING_PAPER |2 ORCID |
336 | 7 | _ | |a Electronic Article |0 28 |2 EndNote |
336 | 7 | _ | |a preprint |2 DRIVER |
336 | 7 | _ | |a ARTICLE |2 BibTeX |
336 | 7 | _ | |a Output Types/Working Paper |2 DataCite |
520 | _ | _ | |a We use the VERITAS imaging air Cherenkov Telescope (IACT) array to obtain the first measured angular diameter of $\beta$ UMa at visual wavelengths using stellar intensity interferometry (SII) and independently constrain the limb-darkened angular diameter. The age of the Ursa Major moving group has been assessed from the ages of its members, including nuclear member Merak ($\beta$ UMa), an A1-type subgiant, by comparing effective temperature and luminosity constraints to model stellar evolution tracks. Previous interferometric limb-darkened angular-diameter measurements of $\beta$ UMa in the near-infrared (CHARA Array, $1.149 \pm 0.014$ mas) and mid-infrared (Keck Nuller, $1.08 \pm 0.07$ mas), together with the measured parallax and bolometric flux, have constrained the effective temperature. This paper presents current VERITAS-SII observation and analysis procedures to derive squared visibilities from correlation functions. We fit the resulting squared visibilities to find a limb-darkened angular diameter of $1.07 \pm 0.04 {\rm (stat)} \pm 0.05$ (sys) mas, using synthetic visibilities from a stellar atmosphere model that provides a good match to the spectrum of $\beta$ UMa in the optical wave band. The VERITAS-SII limb-darkened angular diameter yields an effective temperature of $9700\pm200\pm 200$ K, consistent with ultraviolet spectrophotometry, and an age of $390\pm 29 \pm 32 $ Myr, using MESA Isochrones and Stellar Tracks (MIST). This age is consistent with $408 \pm 6$ Myr from the CHARA Array angular diameter. |
536 | _ | _ | |a 613 - Matter and Radiation from the Universe (POF4-613) |0 G:(DE-HGF)POF4-613 |c POF4-613 |f POF IV |x 0 |
588 | _ | _ | |a Dataset connected to INSPIRE |
650 | _ | 7 | |a atmosphere: model |2 INSPIRE |
650 | _ | 7 | |a temperature |2 INSPIRE |
650 | _ | 7 | |a interferometer |2 INSPIRE |
650 | _ | 7 | |a tracks |2 INSPIRE |
650 | _ | 7 | |a VERITAS |2 INSPIRE |
650 | _ | 7 | |a observatory |2 INSPIRE |
650 | _ | 7 | |a correlation function |2 INSPIRE |
650 | _ | 7 | |a Cherenkov counter |2 INSPIRE |
650 | _ | 7 | |a air |2 INSPIRE |
650 | _ | 7 | |a gamma ray: VHE |2 INSPIRE |
650 | _ | 7 | |a photomultiplier |2 INSPIRE |
650 | _ | 7 | |a radio wave |2 INSPIRE |
650 | _ | 7 | |a frequency |2 INSPIRE |
650 | _ | 7 | |a flux |2 INSPIRE |
650 | _ | 7 | |a optical |2 INSPIRE |
650 | _ | 7 | |a bolometer |2 INSPIRE |
650 | _ | 7 | |a imaging |2 INSPIRE |
650 | _ | 7 | |a ultraviolet |2 INSPIRE |
650 | _ | 7 | |a nucleus |2 INSPIRE |
693 | _ | _ | |0 EXP:(DE-H253)VERITAS-20170101 |5 EXP:(DE-H253)VERITAS-20170101 |e Very Energetic Radiation Imaging Telescope Array System |x 0 |
700 | 1 | _ | |a Aufdenberg, J. P. |b 1 |
700 | 1 | _ | |a Bangale, P. |b 2 |
700 | 1 | _ | |a Bartkoske, J. T. |b 3 |
700 | 1 | _ | |a Batista, P. |0 P:(DE-HGF)0 |b 4 |
700 | 1 | _ | |a Benbow, W. |b 5 |
700 | 1 | _ | |a Chromey, A. J. |b 6 |
700 | 1 | _ | |a Davis, J. D. |b 7 |
700 | 1 | _ | |a Feng, Q. |b 8 |
700 | 1 | _ | |a Foote, G. M. |b 9 |
700 | 1 | _ | |a Furniss, A. |b 10 |
700 | 1 | _ | |a Hanlon, W. |b 11 |
700 | 1 | _ | |a Hinrichs, C. E. |b 12 |
700 | 1 | _ | |a Holder, J. |b 13 |
700 | 1 | _ | |a Jin, W. |b 14 |
700 | 1 | _ | |a Kaaret, P. |b 15 |
700 | 1 | _ | |a Kertzman, M. |b 16 |
700 | 1 | _ | |a Kieda, D. |b 17 |
700 | 1 | _ | |a Kleiner, T. K. |0 P:(DE-H253)PIP1093214 |b 18 |
700 | 1 | _ | |a Korzoun, N. |b 19 |
700 | 1 | _ | |a LeBohec, T. |b 20 |
700 | 1 | _ | |a Lisa, M. A. |b 21 |
700 | 1 | _ | |a Lundy, M. |b 22 |
700 | 1 | _ | |a Matthews, N. |b 23 |
700 | 1 | _ | |a McGrath, C. E. |b 24 |
700 | 1 | _ | |a Millard, M. J. |b 25 |
700 | 1 | _ | |a Moriarty, P. |b 26 |
700 | 1 | _ | |a Nikkhah, S. |b 27 |
700 | 1 | _ | |a O'Brien, S. |b 28 |
700 | 1 | _ | |a Ong, R. A. |b 29 |
700 | 1 | _ | |a Pohl, M. |b 30 |
700 | 1 | _ | |a Pueschel, E. |0 P:(DE-H253)PIP1031007 |b 31 |
700 | 1 | _ | |a Quinn, J. |b 32 |
700 | 1 | _ | |a Rabinowitz, P. L. |b 33 |
700 | 1 | _ | |a Ragan, K. |b 34 |
700 | 1 | _ | |a Roache, E. |b 35 |
700 | 1 | _ | |a Rose, J. G. |b 36 |
700 | 1 | _ | |a Sackrider, J. L. |b 37 |
700 | 1 | _ | |a Sadeh, I. |0 P:(DE-H253)PIP1006066 |b 38 |
700 | 1 | _ | |a Saha, L. |b 39 |
700 | 1 | _ | |a Sembroski, G. H. |b 40 |
700 | 1 | _ | |a Shang, R. |b 41 |
700 | 1 | _ | |a Tak, D. |0 P:(DE-H253)PIP1094637 |b 42 |
700 | 1 | _ | |a Ticoras, M. |0 P:(DE-HGF)0 |b 43 |e Corresponding author |
700 | 1 | _ | |a Tucci, J. V. |b 44 |
700 | 1 | _ | |a Wong, S. L. |b 45 |
700 | 1 | _ | |a VERITAS Collaboration |0 P:(DE-HGF)0 |b 46 |e Collaboration author |
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913 | 1 | _ | |a DE-HGF |b Forschungsbereich Materie |l Matter and the Universe |1 G:(DE-HGF)POF4-610 |0 G:(DE-HGF)POF4-613 |3 G:(DE-HGF)POF4 |2 G:(DE-HGF)POF4-600 |4 G:(DE-HGF)POF |v Matter and Radiation from the Universe |x 0 |
914 | 1 | _ | |y 2023 |
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920 | 1 | _ | |0 I:(DE-H253)Z_VER-20210408 |k Z_VER |l VERITAS |x 0 |
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