Large-scale changes of the cloud coverage in the ε Indi Ba and Bb system
We present the results of 14 nights of I-band photometric monitoring of the nearby brown dwarf binary, epsilon Indi Ba and Bb. Observations were acquired over 2 months, with a total of close to 42 h of coverage at a typically high cadence of 1.4 min. At a separation of just 0.7 arcsec, we do not res...
Gespeichert in:
| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , , , , |
|---|---|
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
18 May 2020
|
| In: |
Monthly notices of the Royal Astronomical Society
Year: 2020, Jahrgang: 495, Heft: 4, Pages: 3881-3899 |
| ISSN: | 1365-2966 |
| DOI: | 10.1093/mnras/staa1344 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1093/mnras/staa1344
|
| Verfasserangaben: | J.A. Hitchcock, Ch. Helling, A. Scholz, G. Hodosan, M. Dominik, M. Hundertmark, U.G. Jorgensen, P. Longa-Pena, S. Sajadian, J. Skottfelt, C. Snodgrass, V. Bozza, M.J. Burgdorf, J. Campbell-White, Roberto Figuera Jaimes, Y.I. Fujii, L.K. Haikala, T. Henning, T.C. Hinse, S. Lowry, L. Mancini, S. Rahvar, M. Rabus, J. Southworth, and C. von Essen (The MiNDSTEp Collaboration) |
MARC
| LEADER | 00000caa a2200000 c 4500 | ||
|---|---|---|---|
| 001 | 1736026240 | ||
| 003 | DE-627 | ||
| 005 | 20220818232456.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 201020s2020 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.1093/mnras/staa1344 |2 doi | |
| 035 | |a (DE-627)1736026240 | ||
| 035 | |a (DE-599)KXP1736026240 | ||
| 035 | |a (OCoLC)1341372946 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rda | ||
| 041 | |a eng | ||
| 084 | |a 29 |2 sdnb | ||
| 100 | 1 | |a Hitchcock, James |e VerfasserIn |0 (DE-588)1219930717 |0 (DE-627)1736028197 |4 aut | |
| 245 | 1 | 0 | |a Large-scale changes of the cloud coverage in the ε Indi Ba and Bb system |c J.A. Hitchcock, Ch. Helling, A. Scholz, G. Hodosan, M. Dominik, M. Hundertmark, U.G. Jorgensen, P. Longa-Pena, S. Sajadian, J. Skottfelt, C. Snodgrass, V. Bozza, M.J. Burgdorf, J. Campbell-White, Roberto Figuera Jaimes, Y.I. Fujii, L.K. Haikala, T. Henning, T.C. Hinse, S. Lowry, L. Mancini, S. Rahvar, M. Rabus, J. Southworth, and C. von Essen (The MiNDSTEp Collaboration) |
| 246 | 3 | 3 | |a Large-scale changes of the cloud coverage in the epsilon Indi Ba and Bb system |
| 264 | 1 | |c 18 May 2020 | |
| 300 | |a 19 | ||
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a Computermedien |b c |2 rdamedia | ||
| 338 | |a Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Gesehen am 20.10.2020 | ||
| 520 | |a We present the results of 14 nights of I-band photometric monitoring of the nearby brown dwarf binary, epsilon Indi Ba and Bb. Observations were acquired over 2 months, with a total of close to 42 h of coverage at a typically high cadence of 1.4 min. At a separation of just 0.7 arcsec, we do not resolve the individual components, and so effectively treat the binary as if it were a single object. However, epsilon Indi Ba (spectral type T1) is the brightest known T-type brown dwarf, and is expected to dominate the photometric signal. We typically find no strong variability associated with the target during each individual night of observing, but see significant changes in mean brightness - by as much as 0.10 mag - over the 2 months of the campaign. This strong variation is apparent on a time-scale of at least 2 d. We detect no clear periodic signature, which suggests that we may be observing the T1 brown dwarf almost pole-on, and the days-long variability in mean brightness is caused by changes in the large-scale structure of the cloud coverage. Dynamic clouds will very likely produce lightning, and complementary high-cadence V-band and H alpha images were acquired to search for the emission signatures associated with stochastic 'strikes'. We report no positive detections for the target in either of these passbands. | ||
| 650 | 4 | |a brown dwarfs | |
| 650 | 4 | |a dwarf | |
| 650 | 4 | |a photometry | |
| 650 | 4 | |a search | |
| 650 | 4 | |a stars: individual: epsilon Indi Ba and Bb | |
| 650 | 4 | |a techniques: photometric | |
| 650 | 4 | |a temperature | |
| 650 | 4 | |a time-series observations | |
| 650 | 4 | |a variability | |
| 700 | 1 | |a Helling, Christiane |e VerfasserIn |4 aut | |
| 700 | 1 | |a Scholz, A. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Hodosan, G. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Dominik, M. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Hundertmark, Markus |e VerfasserIn |0 (DE-588)1138794627 |0 (DE-627)896371042 |0 (DE-576)492681937 |4 aut | |
| 700 | 1 | |a Jorgensen, U. G. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Longa-Pena, P. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Sajadian, S. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Skottfelt, J. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Snodgrass, C. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Bozza, V. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Burgdorf, M. J. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Campbell-White, J. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Figuera Jaimes, Roberto |e VerfasserIn |4 aut | |
| 700 | 1 | |a Fujii, Y. I. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Haikala, L. K. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Henning, T. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Hinse, T. C. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Lowry, S. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Mancini, L. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Rahvar, S. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Rabus, M. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Southworth, J. |e VerfasserIn |4 aut | |
| 700 | 1 | |a von Essen, C. |e VerfasserIn |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |a Royal Astronomical Society |t Monthly notices of the Royal Astronomical Society |d Oxford : Oxford Univ. Press, 1827 |g 495(2020), 4, Seite 3881-3899 |h Online-Ressource |w (DE-627)314059164 |w (DE-600)2016084-7 |w (DE-576)090955420 |x 1365-2966 |7 nnas |
| 773 | 1 | 8 | |g volume:495 |g year:2020 |g number:4 |g pages:3881-3899 |g extent:19 |a Large-scale changes of the cloud coverage in the ε Indi Ba and Bb system |
| 856 | 4 | 0 | |u https://doi.org/10.1093/mnras/staa1344 |x Verlag |x Resolving-System |z lizenzpflichtig |3 Volltext |
| 951 | |a AR | ||
| 992 | |a 20201020 | ||
| 993 | |a Article | ||
| 994 | |a 2020 | ||
| 998 | |g 1138794627 |a Hundertmark, Markus |m 1138794627:Hundertmark, Markus |d 700000 |d 714000 |d 714100 |e 700000PH1138794627 |e 714000PH1138794627 |e 714100PH1138794627 |k 0/700000/ |k 1/700000/714000/ |k 2/700000/714000/714100/ |p 6 | ||
| 999 | |a KXP-PPN1736026240 |e 3783010489 | ||
| BIB | |a Y | ||
| SER | |a journal | ||
| JSO | |a {"relHost":[{"title":[{"title_sort":"Monthly notices of the Royal Astronomical Society","title":"Monthly notices of the Royal Astronomical Society"}],"part":{"year":"2020","issue":"4","pages":"3881-3899","volume":"495","text":"495(2020), 4, Seite 3881-3899","extent":"19"},"pubHistory":["1.1827 -"],"corporate":[{"role":"aut","display":"Royal Astronomical Society","roleDisplay":"VerfasserIn"}],"language":["eng"],"recId":"314059164","note":["Gesehen am 15.01.2018"],"type":{"bibl":"periodical","media":"Online-Ressource"},"disp":"Royal Astronomical SocietyMonthly notices of the Royal Astronomical Society","id":{"zdb":["2016084-7"],"doi":["10.1111/(ISSN)1365-2966"],"eki":["314059164"],"issn":["1365-2966"]},"origin":[{"publisherPlace":"Oxford ; Oxford [u.a.] ; Oxford [u.a.]","dateIssuedDisp":"1827-","publisher":"Oxford Univ. Press ; Blackwell ; Wiley-Blackwell","dateIssuedKey":"1827"}],"physDesc":[{"extent":"Online-Ressource"}]}],"physDesc":[{"extent":"19 S."}],"name":{"displayForm":["J.A. Hitchcock, Ch. Helling, A. Scholz, G. Hodosan, M. Dominik, M. Hundertmark, U.G. Jorgensen, P. Longa-Pena, S. Sajadian, J. Skottfelt, C. Snodgrass, V. Bozza, M.J. Burgdorf, J. Campbell-White, Roberto Figuera Jaimes, Y.I. Fujii, L.K. Haikala, T. Henning, T.C. Hinse, S. Lowry, L. Mancini, S. Rahvar, M. Rabus, J. Southworth, and C. von Essen (The MiNDSTEp Collaboration)"]},"id":{"doi":["10.1093/mnras/staa1344"],"eki":["1736026240"]},"origin":[{"dateIssuedKey":"2020","dateIssuedDisp":"18 May 2020"}],"language":["eng"],"recId":"1736026240","note":["Gesehen am 20.10.2020"],"type":{"bibl":"article-journal","media":"Online-Ressource"},"titleAlt":[{"title":"Large-scale changes of the cloud coverage in the epsilon Indi Ba and Bb system"}],"person":[{"family":"Hitchcock","given":"James","roleDisplay":"VerfasserIn","display":"Hitchcock, James","role":"aut"},{"given":"Christiane","family":"Helling","role":"aut","display":"Helling, Christiane","roleDisplay":"VerfasserIn"},{"family":"Scholz","given":"A.","roleDisplay":"VerfasserIn","display":"Scholz, A.","role":"aut"},{"role":"aut","roleDisplay":"VerfasserIn","display":"Hodosan, G.","given":"G.","family":"Hodosan"},{"roleDisplay":"VerfasserIn","display":"Dominik, M.","role":"aut","family":"Dominik","given":"M."},{"roleDisplay":"VerfasserIn","display":"Hundertmark, Markus","role":"aut","family":"Hundertmark","given":"Markus"},{"roleDisplay":"VerfasserIn","display":"Jorgensen, U. G.","role":"aut","family":"Jorgensen","given":"U. G."},{"family":"Longa-Pena","given":"P.","display":"Longa-Pena, P.","roleDisplay":"VerfasserIn","role":"aut"},{"given":"S.","family":"Sajadian","role":"aut","roleDisplay":"VerfasserIn","display":"Sajadian, S."},{"roleDisplay":"VerfasserIn","display":"Skottfelt, J.","role":"aut","family":"Skottfelt","given":"J."},{"roleDisplay":"VerfasserIn","display":"Snodgrass, C.","role":"aut","family":"Snodgrass","given":"C."},{"roleDisplay":"VerfasserIn","display":"Bozza, V.","role":"aut","family":"Bozza","given":"V."},{"role":"aut","roleDisplay":"VerfasserIn","display":"Burgdorf, M. J.","given":"M. J.","family":"Burgdorf"},{"role":"aut","roleDisplay":"VerfasserIn","display":"Campbell-White, J.","given":"J.","family":"Campbell-White"},{"roleDisplay":"VerfasserIn","display":"Figuera Jaimes, Roberto","role":"aut","family":"Figuera Jaimes","given":"Roberto"},{"family":"Fujii","given":"Y. I.","display":"Fujii, Y. I.","roleDisplay":"VerfasserIn","role":"aut"},{"family":"Haikala","given":"L. K.","roleDisplay":"VerfasserIn","display":"Haikala, L. K.","role":"aut"},{"family":"Henning","given":"T.","roleDisplay":"VerfasserIn","display":"Henning, T.","role":"aut"},{"family":"Hinse","given":"T. C.","display":"Hinse, T. C.","roleDisplay":"VerfasserIn","role":"aut"},{"role":"aut","roleDisplay":"VerfasserIn","display":"Lowry, S.","given":"S.","family":"Lowry"},{"given":"L.","family":"Mancini","role":"aut","display":"Mancini, L.","roleDisplay":"VerfasserIn"},{"family":"Rahvar","given":"S.","display":"Rahvar, S.","roleDisplay":"VerfasserIn","role":"aut"},{"family":"Rabus","given":"M.","display":"Rabus, M.","roleDisplay":"VerfasserIn","role":"aut"},{"display":"Southworth, J.","roleDisplay":"VerfasserIn","role":"aut","family":"Southworth","given":"J."},{"roleDisplay":"VerfasserIn","display":"von Essen, C.","role":"aut","family":"von Essen","given":"C."}],"title":[{"title_sort":"Large-scale changes of the cloud coverage in the ε Indi Ba and Bb system","title":"Large-scale changes of the cloud coverage in the ε Indi Ba and Bb system"}]} | ||
| SRT | |a HITCHCOCKJLARGESCALE1820 | ||