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Review Article

The time domain for brown dwarfs and directly imaged giant exoplanets: the power of variability monitoring

References

  • Burgasser AJ. The SpeX Prism Library: 1000+ low-resolution, near-infrared spectra of ultracool M, L, T and Y dwarfs. In: Astronomical society of India conference series (Astronomical society of India conference series; Vol. 11:7); 2013 Oct 14–l17; Lyon, France.
  • Allers KN, Liu MC. A near-infrared spectroscopic study of young field ultracool dwarfs. Astrophys J. 2013 Aug;772:79.
  • Bonnefoy M, Zurlo A, Baudino JL, et al. First light of the VLT planet finder SPHERE. IV. Physical and chemical properties of the planets around HR8799. Astron Astrophys. 2016 Mar;587:A58.
  • Zurlo A, Vigan A, Galicher R, et al. First light of the VLT planet finder SPHERE. III. New pectrophotometry and astrometry of the HR 8799 exoplanetary system. Astron Astrophys. 2016 Mar;587:A57.
  • Bonnefoy M, Marleau GD, Galicher R, et al. Physical and orbital properties of β Pictoris b. Astron Astrophys. 2014 Jul;567:L9.
  • Ingraham P, Marley MS, Saumon D, et al. Gemini Planet Imager spectroscopy of the HR 8799 planets c and d. Astrophys J Lett. 2014 Oct;794:L15.
  • Chilcote J, Barman T, Fitzgerald MP, et al. The first H-band spectrum of the giant planet β Pictoris b. Astrophys J Lett. 2015 Jan;798:L3.
  • De Rosa RJ, Rameau J, Patience J, et al. Spectroscopic characterization of HD 95086 b with the Gemini Planet Imager. Astrophys J. 2016 Jun;824:121.
  • Macintosh B, Graham JR, Barman T, et al. Discovery and spectroscopy of the young jovian planet 51 Eri b with the Gemini Planet Imager. Science. 2015 Oct;350:64–67.
  • Wagner K, Apai D, Kasper M, et al. Direct imaging discovery of a Jovian exoplanet within a triple-star system. Science. 2016 Aug;353:673–678.
  • Kirkpatrick JD. New spectral types L and T. Ann Rev Astron Astrophys. 2005 Sep;43:195–245.
  • Cushing MC, Kirkpatrick JD, Gelino CR, et al. The discovery of Y dwarfs using data from the wide-field infrared survey explorer (WISE). Astrophys J. 2011 Dec;743:50.
  • Kirkpatrick JD, Gelino CR, Cushing MC, et al. Further defining spectral type ‘y’ and exploring the low-mass end of the field brown dwarf mass function. Astrophys J. 2012 Jul;753:156.
  • Barman TS, Macintosh B, Konopacky QM, et al. Clouds and chemistry in the atmosphere of extrasolar planet HR8799b. Astrophys J. 2011 May;733:65.
  • Zapatero Osorio MR, Martín EL, Bouy H, et al. Spectroscopic rotational velocities of brown dwarfs. Astrophys J. 2006 Aug;647:1405–1412.
  • Burrows A, Sudarsky D, Lunine JI. Beyond the T dwarfs: theoretical spectra, colors, and detectability of the coolest brown dwarfs. Astrophys J. 2003 Oct;596:587–596.
  • Metchev SA, Heinze A, Apai D, et al. Weather on other worlds. II. Survey results: spots are ubiquitous on L and T Dwarfs. Astrophys J. 2015 Feb;799:154.
  • Snellen IAG, Brandl BR, de Kok RJ, et al. Fast spin of the young extrasolar planet β Pictoris b. Nature. 2014 May;509:63–65.
  • Lagrange AM, Bonnefoy M, Chauvin G, et al. A giant planet imaged in the disk of the young star β Pictoris. Science. 2010 Jul;329:57.
  • Schwarz H, Ginski C, de Kok RJ, et al. The slow spin of the young sub-stellar companion GQ Lupi b and its orbital configuration. A&A. 2016 Jun;593:A74.
  • Zhou Y, Apai D, Schneider GH, et al. Discovery of rotational modulations in the planetary-mass companion 2M1207b: intermediate rotation period and heterogeneous clouds in a low gravity atmosphere. Astrophys J. 2016 Feb;818:176.
  • Biller BA, Vos J, Bonavita M, et al. Variability in a young, L/T transition planetary-mass object. Astrophys J Lett. 2015 Nov;813:L23.
  • Allers KN, Gallimore JF, Liu MC, et al. The radial and rotational velocities of PSO J318.5338-22.8603, a newly confirmed planetary-mass member of the β Pictoris moving group. Astrophys J. 2016 Mar;819:133.
  • Marley MS, Saumon D, Goldblatt C. A patchy cloud model for the L to T dwarf transition. Astrophys J Lett. 2010 Nov;723:L117–L121.
  • Skemer AJ, Hinz PM, Esposito S, et al. First light LBT AO images of HR 8799 bcde at 1.6 and 3.3 μm: new discrepancies between young planets and old brown dwarfs. Astrophys J. 2012 Jul;753:14.
  • Skemer AJ, Marley MS, Hinz PM, et al. Directly imaged L-T transition exoplanets in the mid-infrared. Astrophys J. 2014 Sep;792:17.
  • Robinson TD, Marley MS. Temperature fluctuations as a source of brown dwarf variability. Astrophys J. 2014 Apr;785:158.
  • Tremblin P, Amundsen DS, Mourier P, et al. Fingering convection and cloudless models for cool brown dwarf atmospheres. Astrophys J Lett. 2015 May;804:L17.
  • Tremblin P, Amundsen DS, Chabrier G, et al. Cloudless atmospheres for L/T dwarfs and extrasolar giant planets. Astrophys J Lett. 2016 Feb;817:L19.
  • Hallinan G, Littlefair SP, Cotter G, et al. Magnetospherically driven optical and radio aurorae at the end of the stellar main sequence. Nature. 2015 Jul;523:568–571.
  • Zapatero Osorio MR, Caballero JA, Béjar VJS, et al. Photometric variability of a young, low-mass brown dwarf. Astron Astrophys. 2003 Sep;408:663–673.
  • Joergens V, Fernández M, Carpenter JM, et al. Rotational periods of very young brown dwarfs and very low mass stars in Chamaeleon I. Astrophys J. 2003 Sep;594:971–981.
  • Scholz A, Eislöffel J. Rotation and accretion of very low mass objects in the σ Ori cluster. Astron Astrophys. 2004 May;419:249–267.
  • Caballero JA, Béjar VJS, Rebolo R, et al. Photometric variability of young brown dwarfs in the σ Orionis open cluster. Astron Astrophys. 2004 Sep;424:857–872.
  • Gelino CR, Marley MS, Holtzman JA, et al. L dwarf variability: I-band observations. Astrophys J. 2002 Sep;577:433–446.
  • Dupuy TJ, Liu MC. The Hawaii infrared parallax program. I. Ultracool binaries and the L/T transition. Astrophys J Suppl. 2012 Aug;201:19.
  • Dupuy TJ, Kraus AL. Distances, luminosities, and temperatures of the coldest known substellar objects. Science. 2013 Sep;341:1492–1495.
  • Liu MC, Dupuy TJ, Allers KN. The Hawaii infrared parallax program. II. Young ultracool field dwarfs. Astrophys J. 2016 Dec;833:96.
  • Kuzuhara M, Tamura M, Kudo T, et al. Direct imaging of a cold jovian exoplanet in orbit around the sun-like star GJ 504. Astrophys J. 2013 Sep;774:11.
  • Clarke FJ, Tinney CG, Hodgkin ST. Time-resolved spectroscopy of the variable brown dwarf Kelu-1*. Mon Not R Astron Soc. 2003 May;341:239–246.
  • Enoch ML, Brown ME, Burgasser AJ. Photometric variability at the L/T dwarf boundary. Astron J. 2003 Aug;126:1006–1016.
  • Koen C. A search for short time-scale I-band variability in ultracool dwarfs. Mon Not R Astron Soc. 2003 Dec;346:473–482.
  • Koen C, Matsunaga N, Menzies J. A search for short time-scale JHK variability in ultracool dwarfs. Mon Not R Astron Soc. 2004 Oct;354:466–476.
  • Koen C. IC and RC band time-series observations of some bright ultracool dwarfs. Mon Not R Astron Soc. 2005 Jul;360:1132–1142.
  • Koen C, Tanabé T, Tamura M, et al. JHKs time-series observations of a few ultracool dwarfs. Mon Not R Astron Soc. 2005 Sep;362:727–736.
  • Koen C. Evidence for rapid evolution of periodic variations in an ultracool dwarf. Mon Not R Astron Soc. 2006 Apr;367:1735–1738.
  • Maiti M, Sengupta S, Parihar PS, et al. Observation of R-band variability of L dwarfs. Astrophys J Lett. 2005 Feb;619:L183–L186.
  • Goldman B. Ultra-cool dwarf variability. Astron Nachr. 2005 Dec;326:1059–1064.
  • Littlefair SP, Dhillon VS, Marsh TR, et al. Observations of ultracool dwarfs with ULTRACAM on the VLT: a search for weather. Mon Not R Astron Soc. 2006 Aug;370:1208–1212.
  • Morales-Calderón M, Stauffer JR, Kirkpatrick JD, et al. A sensitive search for variability in late L dwarfs: the quest for weather. Astrophys J. 2006 Dec;653:1454–1463.
  • Maiti M. Observational evidence of optical variability in L dwarfs. Astron J. 2007 Apr;133:1633–1644.
  • Bailer-Jones CAL, Mundt R. A search for variability in brown dwarfs and L dwarfs. Astron Astrophys. 1999 Aug;348:800–804.
  • Bailer-Jones CAL, Mundt R. Variability in ultra cool dwarfs: evidence for the evolution of surface features. Astron Astrophys. 2001 Feb;367:218–235.
  • Bailer-Jones CAL, Lamm M. Limits on the infrared photometric monitoring of brown dwarfs. Mon Not R Astron Soc. 2003 Feb;339:477–485.
  • Bailer-Jones CAL. Spectroscopic rotation velocities of L dwarfs from VLT/UVES and their comparison with periods from photometric monitoring. Astron Astrophys. 2004 May;419:703–712.
  • Goldman B, Cushing MC, Marley MS, et al. CLOUDS search for variability in brown dwarf atmospheres. Infrared spectroscopic time series of L/T transition brown dwarfs. Astron Astrophys. 2008 Aug;487:277–292.
  • Artigau É, Doyon R, Lafrenière D, et al. Discovery of the brightest T Dwarf in the northern hemisphere. Astrophys J Lett. 2006 Nov;651:L57–L60.
  • Artigau É, Bouchard S, Doyon R, et al. Photometric variability of the T2.5 brown dwarf SIMP J013656.5+093347: evidence for evolving weather patterns. Astrophys J. 2009 Aug;701:1534–1539.
  • Radigan J, Jayawardhana R, Lafrenière D, et al. Large-amplitude variations of an L/T transition brown dwarf: multi-wavelength observations of patchy, high-contrast cloud features. Astrophys J. 2012 May;750:105.
  • Luhman KL. Discovery of a binary brown dwarf at 2 pc from the sun. Astrophys J Lett. 2013 Apr;767:L1.
  • Burgasser AJ, Sheppard SS, Luhman KL. Resolved near-infrared spectroscopy of WISE J104915.57-531906.1AB: a flux-reversal binary at the L dwarf/T dwarf transition. Astrophys J. 2013 Aug;772:129.
  • Gillon M, Triaud AHMJ, Jehin E, et al. Fast-evolving weather for the coolest of our two new substellar neighbours. Astron Astrophys. 2013 Jul;555:L5.
  • Biller BA, Crossfield IJM, Mancini L, et al. Weather on the nearest brown dwarfs: resolved simultaneous multi-wavelength variability monitoring of WISE J104915.57-531906.1AB. Astrophys J Lett. 2013 Nov;778:L10.
  • Buenzli E, Marley MS, Apai D, et al. Cloud structure of the nearest brown dwarfs. II. High-amplitude variability for Luhman 16 A and B in and out of the 0.99 μm FeH feature. Astrophys J. 2015 Oct;812:163.
  • Street RA, Fulton BJ, Scholz A, et al. Extended baseline photometry of rapidly changing weather patterns on the brown dwarf binary Luhman-16. Astrophys J. 2015 Oct;812:161.
  • Mancini L, Giacobbe P, Littlefair SP, et al. Rotation periods and astrometric motions of the Luhman 16AB brown dwarfs by high-resolution lucky-imaging monitoring. Astron Astrophys. 2015 Dec;584:A104.
  • Radigan J, Lafrenière D, Jayawardhana R, et al. Strong brightness variations signal cloudy-to-clear transition of brown dwarfs. Astrophys J. 2014 Oct;793:75.
  • Wilson PA, Rajan A, Patience J. The brown dwarf atmosphere monitoring (BAM) project. I. The largest near-IR monitoring survey of L and T dwarfs. Astron Astrophys. 2014 Jun;566:A111.
  • Khandrika H, Burgasser AJ, Melis C, et al. A search for photometric variability in L- and T-type brown dwarf atmospheres. Astron J. 2013 Mar;145:71.
  • Girardin F, Artigau É, Doyon R. In search of dust clouds: photometric monitoring of a sample of late L and T dwarfs. Astrophys J. 2013 Apr;767:61.
  • Radigan J. An independent analysis of the brown dwarf atmosphere monitoring (BAM) data: large-amplitude variability is rare outside the L/T transition. Astrophys J. 2014 Dec;797:120.
  • Heinze AN, Metchev S, Kellogg K. Weather on other worlds. III. A survey for T dwarfs with high-amplitude optical variability. Astrophys J. 2015 Mar;801:104.
  • Buenzli E, Apai D, Radigan J, et al. Brown dwarf photospheres are patchy: a hubble space telescope near-infrared spectroscopic survey finds frequent low-level variability. Astrophys J. 2014 Feb;782:77.
  • Gizis JE, Burgasser AJ, Berger E, et al. Kepler monitoring of an L dwarf I. The Photometric Period and White Light Flares. Astrophys J. 2013 Dec;779:172.
  • Gizis JE, Dettman KG, Burgasser AJ, et al. Kepler monitoring of an L dwarf. II. Clouds with multi-year lifetimes. Astrophys J. 2015 Nov;813:104.
  • Rajan A, Patience J, Wilson PA, et al. The brown dwarf atmosphere monitoring (BAM) project – II. Multi-epoch monitoring of extremely cool brown dwarfs. Mon Not R Astron Soc. 2015 Apr;448:3775–3783.
  • Cushing MC, Hardegree-Ullman KK, Trucks JL, et al. The first detection of photometric variability in a Y dwarf: WISE J140518.39+553421.3. Astrophys J. 2016 Jun;823:152.
  • Leggett SK, Cushing MC, Hardegree-Ullman KK, et al. Observed variability at 1um and 4um in the Y0 brown dwarf WISEP J173835.52+273258.978. ArXiv e-prints. 2016 Jul.
  • Esplin T, Luhman K, Cushing M, et al. Photometric monitoring of the coldest known brown dwarf with the spitzer space telescope. ArXiv e-prints. 2016 Sep;329:57.
  • Luhman KL. Discovery of a ~250 K brown dwarf at 2 pc from the sun. Astrophys J Lett. 2014 May;786:L18.
  • Apai D, Radigan J, Buenzli E, et al. HST spectral mapping of L/T transition brown dwarfs reveals cloud thickness variations. Astrophys J. 2013 May;768:121.
  • Buenzli E, Apai D, Morley CV, et al. Vertical atmospheric structure in a variable brown dwarf: pressure-dependent phase shifts in simultaneous hubble space telescope-spitzer light curves. Astrophys J Lett. 2012 Dec;760:L31.
  • Yang H, Apai D, Marley MS, et al. Extrasolar storms: pressure-dependent changes in light-curve phase in brown dwarfs from simultaneous hst and spitzer observations. Astrophys J. 2016 Jul;826:8.
  • Morley CV, Marley MS, Fortney JJ, et al. Spectral variability from the patchy atmospheres of T and Y Dwarfs. Astrophys J Lett. 2014 Jul;789:L14.
  • Buenzli E, Saumon D, Marley MS, et al. Cloud structure of the nearest brown dwarfs: spectroscopic variability of Luhman 16AB from the hubble space telescope. Astrophys J. 2015 Jan;798:127.
  • Yang H, Apai D, Marley MS, et al. HST rotational spectral mapping of two L-type brown dwarfs: variability in and out of water bands indicates high-altitude haze layers. Astrophys J Lett. 2015 Jan;798:L13.
  • Burgasser AJ, Marley MS, Ackerman AS, et al. Evidence of cloud disruption in the L/T dwarf transition. Astrophys J Lett. 2002 Jun;571:L151–L154.
  • Cushing MC, Marley MS, Saumon D, et al. Atmospheric parameters of field L and T dwarfs. Astrophys J. 2008 May;678:1372–1395.
  • Baraffe I, Chabrier G, Barman TS, et al. Evolutionary models for cool brown dwarfs and extrasolar giant planets. The case of HD 209458. Astron Astrophys. 2003 May;402:701–712.
  • Morley CV, Marley MS, Fortney JJ, et al. Water clouds in Y dwarfs and exoplanets. Astrophys J. 2014 May;787:78.
  • Kostov V, Apai D. Mapping Directly Imaged Giant Exoplanets. Astrophys J. 2013 Jan;762:47.
  • Karalidi T, Apai D, Schneider G, et al. Aeolus: a markov chain monte carlo code for mapping ultracool atmospheres. an application on jupiter and brown dwarf HST light curves. Astrophys J. 2015 Nov;814:65.
  • Karalidi T, Apai D, Marley MS, et al. Maps of evolving cloud structures in Luhman 16AB from HST time-resolved spectroscopy. Astrophys J. 2016 Jul;825:90.
  • Crossfield IJM, Biller B, Schlieder JE, et al. A global cloud map of the nearest known brown dwarf. Nature. 2014 Jan;505:654–656.
  • Vogt SS, Penrod GD, Hatzes AP. Doppler images of rotating stars using maximum entropy image reconstruction. Astrophys J. 1987 Oct;321:496–515.
  • Rice JB, Wehlau WH, Khokhlova VL. Mapping stellar surfaces by Doppler imaging – technique and application. Astron Astrophys. 1989 Jan;208:179–188.
  • Unruh YC. Collier Cameron A. The sensitivity of Doppler imaging to line profile models. Mon Not R Astron Soc. 1995 Mar;273:1–16.
  • Crossfield IJM. Doppler imaging of exoplanets and brown dwarfs. Astron Astrophys. 2014 Jun;566:A130.
  • Liu MC, Magnier EA, Deacon NR, et al. The extremely red, young L dwarf PSO J318.5338-22.8603: a free-floating planetary-mass analog to directly imaged young gas-giant planets. Astrophys J Lett. 2013 Nov;777:L20.
  • Gizis JE, Faherty JK, Liu MC, et al. Discovery of an unusually red L-type brown dwarf. Astron J. 2012 Oct;144:94.
  • Chauvin G, Lagrange AM, Dumas C, et al. A giant planet candidate near a young brown dwarf. Direct VLT/NACO observations using IR wavefront sensing. Astron Astrophys. 2004 Oct;425:L29–L32.
  • Chauvin G, Lagrange AM, Dumas C, et al. Giant planet companion to 2MASSW J1207334–393254. Astron Astrophys. 2005 Aug;438:L25–L28.
  • Lew BWP, Apai D, Zhou Y, et al. Cloud atlas: discovery of patchy clouds and high-amplitude rotational modulations in a young, extremely red L-type Brown Dwarf. Astrophys J Lett. 2016 Oct;829:L32.
  • Macintosh B, Graham JR, Ingraham P, et al. First light of the Gemini Planet Imager. Proc Nat Acad Sci. 2014 Sep;111:12661–12666.
  • Beuzit JL, Feldt M, Dohlen K, et al. SPHERE: a ‘planet finder’ instrument for the VLT. In: Ground-based and airborne instrumentation for astronomy II (Proc. SPIE; Vol. 7014, p. 18). 2008 Jun 22–28; Marseille, France. p. 701418
  • Gagné J, Lafrenière D, Doyon R, et al. BANYAN. II. Very low mass and substellar candidate members to nearby, young kinematic groups with previously known signs of youth. Astrophys J. 2014 Mar;783:121.
  • Gagné J, Lafrenière D, Doyon R, et al. BANYAN. V. A systematic all-sky survey for new very late-type low-mass stars and brown dwarfs in nearby young moving groups. Astrophys J. 2015 Jan;798:73.
  • Gagné J, Faherty JK, Cruz KL, et al. BANYAN. VII. A new population of young substellar candidate members of nearby moving groups from the BASS survey. Astrophys J Suppl. 2015 Aug;219:33.
  • Faherty JK, Riedel AR, Cruz KL, et al. Population properties of brown dwarf analogs to exoplanets. Astrophys J Suppl. 2016 Jul;225:10.
  • Apai D, Kasper M, Skemer A, et al. High-cadence, high-contrast imaging for exoplanet mapping: observations of the HR 8799 planets with VLT/SPHERE satellite-spot-corrected relative photometry. Astrophys J. 2016 Mar;820:40.
  • Boccaletti A, Lagage PO, Baudoz P, et al. The mid-infrared instrument for the James Webb space telescope, V: predicted performance of the MIRI coronagraphs. PASP. 2015 Jul;127:633B.
  • Line MR, Fortney JJ, Marley MS, et al. A data-driven approach for retrieving temperatures and abundances in brown dwarf atmospheres. Astrophys J. 2014 Sep;793:33.
  • Line MR, Teske J, Burningham B, et al. Uniform atmospheric retrieval analysis of ultracool dwarfs. I. Characterizing benchmarks, Gl 570D and HD 3651B. Astrophys J. 2015 Jul;807:183.
  • Burningham B, Marley MS, Line MR, et al. Retrieval of atmospheric properties of cloudy L dwarfs. ArXiv e-prints. 2017 Jan.
  • Kreidberg L, Bean JL, Désert JM, et al. A precise water abundance measurement for the hot jupiter WASP-43b. Astrophys J Lett. 2014 Oct;793:L27.
  • Benneke B. Strict upper limits on the carbon-to-oxygen ratios of eight hot jupiters from self-consistent atmospheric retrieval. ArXiv e-prints. 2015 Apr.
  • Simon AA, Rowe JF, Gaulme P, et al. Neptune’s dynamic atmosphere from Kepler K2 observations: implications for brown dwarf light curve analyses. Astrophys J. 2016 Feb;817:162.
  • Stauffer J, Marley MS, Gizis JE, et al. Spitzer space telescope Mid-IR light curves of neptune. Astron J. 2016 Nov;152:142.
  • Marley MS, Robinson TD. On the cool side: modeling the atmospheres of brown dwarfs and giant planets. Ann Rev of Astron Astrophys. 2015 Aug;53:279–323.
  • Morley CV, Fortney JJ, Marley MS, et al. Neglected clouds in T and Y dwarf atmospheres. Astrophys J. 2012 Sep;756:172.
  • Stark CR, Helling C, Diver DA. Inhomogeneous cloud coverage through the Coulomb explosion of dust in substellar atmospheres. Astron Astrophys. 2015 Jul;579:A41.
  • Showman AP, Kaspi Y. Atmospheric dynamics of brown dwarfs and directly imaged giant planets. Astrophys J. 2013 Oct;776:85.
  • Zhang X, Showman AP. Atmospheric circulation of brown dwarfs: jets, vortices, and time variability. Astrophys J Lett. 2014 Jun;788:L6.
  • Mayne NJ, Baraffe I, Acreman DM, et al. The unified model, a fully-compressible, non-hydrostatic, deep atmosphere global circulation model, applied to hot Jupiters. ENDGame for a HD 209458b test case. Astron Astrophys. 2014 Jan;561:A1.