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Host Stars and their Effects on Exoplanet Atmospheres pp 35–60Cite as

Stellar Chromospheres: The Source of UV Emission

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Abstract

The lower layer of a star’s atmosphere, its photosphere, has a thermal structure that decreases outward controlled by the balance of radiative and convection heat from below and the loss of radiation to space. With increasing height in a stellar atmosphere, magnetic heating processes become important in the energy balance, forcing the temperature to increase with height in a region called the chromosphere. Magnetic heating processes include the damping of different types of magnetic waves and the reconnection of magnetic fields.

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Notes

  1. 1.

    casa.colorado.edu/∼ayres/ASTRAL/.

  2. 2.

    Measurements of the ultraviolet spectral characteristics of low-mass exoplanetary systems.

  3. 3.

    Solar-stellar radiation physical modeling tools.

References

  • Abbett, W.P., Hawley, S.L.: Dynamic models of optical emission in impulsive solar flares. Astrophys. J. 521, 906 (1999)

    Article  ADS  Google Scholar 

  • Allred, J.C., Hawley, S.L., Abbett, W.P., Carlsson, M.: Radiative hydrodynamic models of the optical and ultraviolet emission from solar flares. Astrophys. J. 630, 573 (2005)

    Article  ADS  Google Scholar 

  • Allred, J.C., Hawley, S.L., Abbett, W.P., Carlsson, M.: Radiative hydrodynamic models of the optical and ultraviolet emission from M dwarf flares. Astrophys. J. 644, 484 (2006)

    Article  ADS  Google Scholar 

  • Allred, J.C., Kowalski, A.F., Carlsson, M.: A unified computational model for solar and stellar flares. Astrophys. J. 809, 104 (2015)

    Article  ADS  Google Scholar 

  • Anderson, L.S., Athay, R.G.: Model solar chromosphere with prescribed heating. Astrophys. J. 346, 1010 (1989)

    Article  ADS  Google Scholar 

  • Andretta, V., Jones, H.P.: On the role of the solar corona and transition region in the excitation of the spectrum of neutral helium. Astrophys. J. 489, 375 (1997)

    Article  ADS  Google Scholar 

  • Avrett, E.H., Hummer, D.G.: Non-coherent scattering, II: line formation with a frequency independent source function. Mon. Not. R. Astron. Soc. 130, 295 (1965)

    Article  ADS  Google Scholar 

  • Ayres, T.R.: StarCAT: a catalog of space telescope imaging spectrograph ultraviolet echelle spectra of stars. Astrophys. J. Suppl. 187, 149 (2010)

    Article  ADS  Google Scholar 

  • Bolduc, C., Charbonneau, P., Barnabé, R., Bourqui, M.S.: A reconstruction of ultraviolet spectral irradiance during the Maunder Minimum. Sol. Phys. 289, 2891 (2014)

    Article  ADS  Google Scholar 

  • Brown, A., Jordan, C.: The chromosphere and corona of Procyon (α CMi, F5 IV-V). Mon. Not. R. Astron. Soc. 196, 757 (1981)

    Article  ADS  Google Scholar 

  • Carlsson, M., Stein, R.F.: Dynamic hydrogen ionization. Astrophys. J. 572, 626 (2002)

    Article  ADS  Google Scholar 

  • Cegla, H.M., Watson, C.A., Shelyag, S., Chaplin, W.J., Davies, G.R., Mathioudakis, M., Palumbo, M.L., III, Saar, S.H., Haywood, R.D.: Stellar surface magneto-convection as a source of astrophysical noise II. Center-to-limb parameterisation of absorption line profiles and comparison to observations. Astrophys. J. 866, 55 (2018)

    Article  ADS  Google Scholar 

  • Centeno, R., Trujillo Bueno, J., Uitenbroek, H., Collados, M.: The Influence of coronal EUV irradiance on the emission in the He I 10830 Å and D3 Multiplets. Astrophys. J. 677, 742 (2008)

    Article  ADS  Google Scholar 

  • Cuntz, M., Rammacher, W., Ulmschneider, P., Musielak, Z.E., Saar, S.H.: Two-Component theoretical chromosphere models for K Dwarfs of different magnetic activity: exploring the Ca II emission-stellar rotation relationship. Astrophys. J. 522, 1053 (1999)

    Article  ADS  Google Scholar 

  • Doyle, J.G., Houdebine, E.R., Mathioudakis, M., Panagi, P.M.: Lower chromospheric activity in low activity M dwarfs. Astron. Astrophys. 285, 233 (1994)

    ADS  Google Scholar 

  • Dupree, A.K., Lobel, A., Young, P.R., Ake, T.B., Linsky, J.L., Redfield, S.: The far-ultraviolet spectroscopic survey of luminous cool stars. Astrophys. J. 622, 629 (2005)

    Article  ADS  Google Scholar 

  • Fontenla, J.M., Avrett, E.H., Loeser, R.: Energy balance in the solar transition region. I - hydrostatic thermal models with ambipolar diffusion. Astrophys. J. 355, 700 (1990)

    Article  ADS  Google Scholar 

  • Fontenla, J.M., Avrett, E.H., Loeser, R.: Energy balance in the solar transition region. III - helium emission in hydrostatic, constant-abundance models with diffusion. Astrophys. J. 406, 319 (1993)

    Article  ADS  Google Scholar 

  • Fontenla, J.M., Curdt, W., Haberreiter, M., Harder, J., Tian, H.: Semiempirical models of the solar atmosphere. III. Set of non-LTE models for far-Ultraviolet/extreme-ultraviolet irradiance computation. Astrophys. J. 707, 482 (2009)

    Article  ADS  Google Scholar 

  • Fontenla, J.M., Harder, J., Livingston, W., Snow, M., Woods, T.: High-resolution solar spectral irradiance from extreme ultraviolet to far infrared. J. Geophys. Res. 116, D20108 (2011)

    Article  ADS  Google Scholar 

  • Fontenla, J.M., Landi, E., Snow, M., Woods, T.: Far- and extreme-UV solar spectral irradiance and radiance from simplified atmospheric physical models. Solar. Phys. 289, 515 (2014)

    Article  ADS  Google Scholar 

  • Fontenla, J.M., Stancil, P.C., Landi, E.: Solar spectral irradiance, solar activity, and the near-ultraviolet. Astrophys. J. 809, 157 (2015)

    Article  ADS  Google Scholar 

  • Fontenla, J., Linsky, J.L., Witbrod, J., France, K., Buccino, A., Mauas, P., Vieytes, M., Walkowicz,L.: Semi-empirical modeling of the photosphere, chromosphere, transition region, and corona of the M-dwarfs host star GJ 832. Astrophys. J. 830, 154 (2016)

    Article  ADS  Google Scholar 

  • France, K., Froning, C.S., Linsky, J.L., Roberge, A., Stocke, J.T., Tian, F., Bushinsky, R., Désert, J.-M., Mauas, P., Vietes, M., Walkowicz, L.: The ultraviolet radiation environment around M dwarf exoplanet host stars. Astrophys. J. 763, 149 (2013)

    Article  ADS  Google Scholar 

  • France, K., Loyd, R.O.P., Youngblood, A., Brown, A., Schneider, P.C., Hawley, S.L., Froning, C.S., Linsky, J.L., Roberge, A., et al.: The MUSCLES Treasury Survey I: motivation and overview. Astrophys. J. 820, 89 (2016)

    Article  ADS  Google Scholar 

  • Fuhrmeister, B., Schmitt, J.H.M.M., Hauschildt, P.H.: PHOENIX model chromospheres of mid- to late-type M dwarfs. Astron. Astrophys. 439, 1137 (2005)

    Article  ADS  Google Scholar 

  • Gabriel, A.H., Jordan, C.: Analysis of EUV observations of regions of the quiet and active corona at the time of the 1970 March 7 eclipse. Mon. Not. R. Astron. Soc. 173, 397 (1975)

    Google Scholar 

  • Galarza, J.Y., Meléndez, J., Cohen, J.G.: Serendipitous discovery of the faint solar twin Inti 1. Astron. Astrophys. 589, A65 (2016)

    Article  ADS  Google Scholar 

  • Golding, T.P., Carlsson, M., Leenaarts, J.: Detailed and simplified nonequilibrium helium ionization in the solar atmosphere. Astrophys. J. 784, 30 (2014)

    Article  ADS  Google Scholar 

  • Houdebine, E.R.: Observation and modelling of main-sequence star chromospheres - XII. Two-component model chromospheres for five active dM1e stars. Mon. Not. R. Astron. Soc. 397, 2133 (2009)

    Article  ADS  Google Scholar 

  • Houdebine, E.R.: Observation and modelling of main-sequence star chromospheres. IX. Two-component model chromospheres for nine M1 dwarfs. Astron. Astrophys. 509, A65 (2010a)

    Article  Google Scholar 

  • Houdebine, E.R.: Observation and modelling of main-sequence star chromospheres - X. Radiative budgets on Gl 867A and AU Mic (dM1e), and a two-component model chromosphere for Gl 205 (dM1). Mon. Not. R. Astron. Soc. 403, 2157 (2010b)

    Article  ADS  Google Scholar 

  • Houdebine, E.R., Doyle, J.G.: Observation and modelling of main sequence star chromospheres. 2: Modelling of the AU MIC (dM2.5e) hydrogen spectrum. Astron. Astrophys. 289, 185 (1994)

    Google Scholar 

  • Houdebine, E.R., Stempels, H.C.: Observation and modelling of main sequence stellar chromospheres. VI. Hα and Ca II line observations of M1 dwarfs and comparison with models. Astron. Astrophys. 326, 1143 (1997)

    Google Scholar 

  • Hummer, D.G.: Non-coherent scattering: I. The redistribution function with Doppler broadening. Mon. Not. R. Astron. Soc. 125, 21 (1962)

    Article  ADS  Google Scholar 

  • Judge, P.G.: The chromosphere: gateway to the corona? …Or the purgatory of solar physics? Memorie della Societa Astronomica Italiana 81, 543 (2010)

    ADS  Google Scholar 

  • Kowalski, A.,F., Hawley, S.L., Carlsson, M., Allred, J.C., Uitenbroek, H., Osten, R.A., Holman, G.: New insights into white-light flare emission from radiative-hydrodynamic modeling of a chromospheric condensation. Solar Phys. 290, 3487 (2015)

    Article  ADS  Google Scholar 

  • Leenaarts, J. de la Cruz Rodríguez, J., Danilovic, S., Scharmer, G. Carlsson, M.: Chromospheric heating during flux emergence in the solar atmosphere. Astron. Astrophys. 612, 28 (2018)

    Article  ADS  Google Scholar 

  • Linsky, J.L.: In: Ulmschneider, P., Priest, E.R., Rosner, R. (ed.) Mechanisms of Chromospheric and Coronal Heating, p. 166. Springer, Berlin (2001)

    Google Scholar 

  • Linsky, J.L.: Stellar model chromospheres and spectroscopic diagnostics. Ann. Rev. Astron. Astrophys. 55, 159 (2017)

    Article  ADS  Google Scholar 

  • Linsky, J.L., Haisch, B.M.: Outer atmospheres of cool stars. I - the sharp division into solar-type and non-solar-type stars. Astrophys. J. Lett. 229, 27 (1979)

    Article  ADS  Google Scholar 

  • Linsky, J.L., Wood, B.E., Judge, P., Brown, A., Andrulis, C., Ayres, T.R.: The transition regions of Capella. Astrophys. J. 442, 381 (1995)

    Article  ADS  Google Scholar 

  • Linsky, J.L., Bushinsky, R., Ayres, T., France, K.: Ultraviolet spectroscopy of rapidly rotating solar-mass stars. Emission-line redshifts as a test of the solar-stellar connection. Astrophys. J. 754, 69 (2012a)

    Article  ADS  Google Scholar 

  • Linsky, J.L., Bushinsky, R., Ayres, T., Fontenla, J., France, K.: Far-ultraviolet continuum emission: applying this diagnostic to the chromospheres of solar-mass stars. Astrophys. J. 745, 25 (2012b)

    Article  ADS  Google Scholar 

  • Liseau, R., Vlemmings, W., Bayo, A., Bertone, E., Black, J.H., del Burgo, C., Chavez, M., Danchi, W., De la Luz, V., et al.: ALMA observations of α Centauri. First detection of main-sequence stars at 3 mm wavelength. Atron. Astrophys. 573, L4 (2015)

    Google Scholar 

  • Loukitcheva, M., Solanki, S.K., Carlsson, M., White, S.M.: Millimeter radiation from a 3D model of the solar atmosphere. I. Diagnosing chromospheric thermal structure. Astron. Astrophys. 575, A15 (2015)

    Article  ADS  Google Scholar 

  • Loyd, R.O.P., France, K., Youngblood, A., Schneider, C., Brown, A., Hu, R., Linsky, J., Froning, C.S., Redfield, S., Rugheimer, S., Tian, F.: The MUSCLES Treasury Survey III: X-ray to infrared spectra of 11 M and K stars hosting planets. Astrophys. J. 824, 102 (2016)

    Article  ADS  Google Scholar 

  • Maltby, P., Avrett, E.H., Carlsson, M., Kjeldseth-Moe, O., Kurucz, R.L., Loeser, R.: A new sunspot umbral model and its variation with the solar cycle. Astrophys. J. 306, 284 (1986)

    Article  ADS  Google Scholar 

  • Meléndez, J., Ramírez, I.: HIP 56948: a solar twin with a low lithium abundance. Astrophys. J. 669, 89 (2007)

    Article  ADS  Google Scholar 

  • Milkey, R.W., Mihalas, D.: Resonance-line transfer with partial redistribution: a preliminary study of Lyman α in the solar chromosphere. Astrophys. J. 185, 709 (1973a)

    Article  ADS  Google Scholar 

  • Milkey, R.W., Mihalas, D.: Calculation of the solar chromospheric Lα profile allowing for partial redistribution effects. Solar Phys. 32, 361 (1973b)

    Article  ADS  Google Scholar 

  • Milkey, R.W., Mihalas, D.: Resonance-line transfer with partial redistribution. II - the solar Mg II lines. Astrophys. J. 192, 769 (1974)

    Article  ADS  Google Scholar 

  • Milkey, R.W., Ayres, T.R., Shine, R.A.: Resonance line transfer with partial redistribution. III Mg II resonance lines in solar-type stars. Astrophys. J. 197, 143 (1975)

    Article  ADS  Google Scholar 

  • Mittag, M., Schröder, K.-P., Hempelmann, A., González-Pérez, J.N., Schmitt, J.H.M.M.: Chromospheric activity and evolutionary age of the Sun and four solar twins. Astron. Astrophys. 591, 89 (2016)

    Article  Google Scholar 

  • Osten, R.A., Hawley, S.L., Allred, J., Johns-Krull, C.M., Brown, A., Harper, G.M.: From radio to X-ray: the quiescent atmosphere of the dMe flare star EV Lacertae. Astrophys. J. 647, 1349 (2006)

    Article  ADS  Google Scholar 

  • Pace, G., Pasquini, L.: The age-activity-rotation relationship in solar-type stars. Astron. Astrophys. 426, 1021 (2004)

    Article  ADS  Google Scholar 

  • Pagano, I., Linsky, J.L., Carkner, L., Robinson, R.D., Woodgate, B., Timothy, G.: HST/STIS echelle spectra of the dM1e star AU Microscopii outside of flares. Astrophys. J. 532, 497 (2000)

    Article  ADS  Google Scholar 

  • Pagano, I., Linsky, J.L., Valenti, J., Duncan, D.K.: HST/STIS high resolution echelle spectra of α Centauri A (G2 V). Astron. Astrophys. 415, 331 (2004)

    Article  ADS  Google Scholar 

  • Peacock, S., Barman, T., Shkolnik, E.L., Hauschildt, P.H., Baron, E.: Predicting the extreme ultraviolet environment of exoplanets around low-mass stars: the TRAPPIST-1 system. Astrophys. J. 871, 235 (2019)

    Article  ADS  Google Scholar 

  • Pevtsov, A.A., Bertello, L., Marble, A.R.: The Sun-as-a-star solar spectrum. AN 335, 21 (2014)

    ADS  Google Scholar 

  • Porto de Mello, G.F., da Silva, L.: HR 6060: the closest ever solar twin? Astrophys. J. Lett. 482, L89 (1997)

    Google Scholar 

  • Rammacher, W., Ulmschneider, P.: Time-dependent ionization in dynamic solar and stellar atmospheres. I. Methods. Astrophys. J. 589, 988 (2003)

    Article  ADS  Google Scholar 

  • Redfield, S., Linsky, J.L., Ake, T.B., Dupree, A.K., Robinson, R.D., Wood, B.E., Young, P.R.: A far-ultraviolet spectroscopic explorer survey of late-type dwarf stars. Astrophys. J. 581, 626 (2002)

    Article  ADS  Google Scholar 

  • Ribas, I., Guinan, E.F., Güdel, M., Audard, M.: Evolution of the solar activity over time and effects on planetary atmospheres. I. High-energy irradiances (1-1700 Å). Astrophys. J. 622, 680 (2005)

    Article  ADS  Google Scholar 

  • Schmidt, S.J., Hawley, S.L., West, A.A., Bochanski, J.J., Davenport, J.R.A., Ge, J., Schneider, D.P.:BOSS ultracool dwarfs. I. Colors and magnetic activity of M and L dwarfs. Astron. J. 149, 158 (2015)

    Article  ADS  Google Scholar 

  • Sim, S.A., Jordan, C.: On the filling factor of emitting material in the upper atmosphere of 𝜖 Eri (K2 V). Mon. Not. R. Astron. Soc. 346, 846 (2003)

    Article  ADS  Google Scholar 

  • Sim, S.A., Jordan, C.: Modelling the chromosphere and transition region of 𝜖 Eri (K2 V). Mon. Not. R. Astron. Soc. 361, 1102 (2005)

    Article  ADS  Google Scholar 

  • Smith, G.R.: Enhancement of the helium resonance lines in the solar atmosphere by suprathermal electron excitation - II. Non-Maxwellian electron distributions. Mon. Not. R. Astron. Soc. 341, 143 (2003)

    Article  ADS  Google Scholar 

  • Smith, G.R., Jordan, C.: Enhancement of the helium resonance lines in the solar atmosphere by suprathermal electron excitation - I. Non-thermal transport of helium ions. Mon. Not. R. Astron. Soc. 337, 666 (2002)

    Article  ADS  Google Scholar 

  • Soler, R., Terradas, J., Oliver, R., Ballester, J.L.: Propagation of torsional Alfvén Waves from the photosphere to the corona: reflection, transmission, and heating in expanding flux tubes. Astrophys. J. 840, 20 (2017)

    Article  ADS  Google Scholar 

  • Takeda, Y. Takada-Hidai, M.: Chromospheres in metal-poor stars evidenced from the He I 10830Å line. Publ. Astron. Soc. Jpn. 63, 547 (2011)

    Article  ADS  Google Scholar 

  • Thomas, R.N., Athay, R.G.: Physics of the Solar Chromosphere. Interscience Monographs and Texts in Physics and Astronomy. Interscience Publication, New York (1961)

    Book  Google Scholar 

  • Tremblin, P., Amundsen, D.S., Chabrier, G., Baraffe, I., Drummond, B., Hinkley, S., Mourier, P., Venot, O.: Cloudless atmospheres for L/T dwarfs and extrasolar giant planets. Astrophys. J. 817, 19 (2016)

    Article  ADS  Google Scholar 

  • Ulmschneider, P.: In: Ulmschneider, P., Priest, E.R., Rosner, R. (ed.) Mechanisms of Chromospheric and Coronal Heating, p. 328. Springer, Berlin (2001)

    Google Scholar 

  • Vernazza, J.E., Avrett, E.H., Loeser, R.: Structure of the solar chromosphere. Basic computations and summary of the results. Astrophys. J. 184, 605 (1973)

    Article  ADS  Google Scholar 

  • Vernazza, J.E., Avrett, E.H., Loeser, R.: Structure of the solar chromosphere. II - the underlying photosphere and temperature-minimum region. Astrophys. J. Suppl. 30, 1 (1976)

    Article  ADS  Google Scholar 

  • Vernazza, J.E., Avrett, E.H., Loeser, R.: Structure of the solar chromosphere. III - models of the EUV brightness components of the quiet-sun. Astrophys. J. Suppl. 45, 635 (1981)

    Article  ADS  Google Scholar 

  • Vieytes, M., Mauas, P., Cincunegui, C.: Chromospheric models of solar analogues with different activity levels. Astron. Astrophys. 441, 701 (2005)

    Article  ADS  Google Scholar 

  • Vieytes, M.C., Mauas, P.J.D. Díaz, R.F.: Chromospheric changes in K stars with activity. Mon. Not. R. Astron. Soc. 398, 1495 (2009)

    Article  ADS  Google Scholar 

  • Walkowicz, L.M., Johns-Krull, C.M., Hawley, S.L.: Characterizing the near-UV environment of M dwarfs. Astrophys. J. 677, 593 (2008)

    Article  ADS  Google Scholar 

  • Wedemeyer, S., Freytag, B., Steffen, M., Ludwig, H.-G., Holweger, H.: Numerical simulation of the three-dimensional structure and dynamics of the non-magnetic solar chromosphere. Astron. Astrophys. 414, 1121 (2004)

    Article  ADS  Google Scholar 

  • Wedemeyer, S., Bastian, T., Brajsa, R., Hudson, H., Fleishman, G., Loukitcheva, M., Fleck, B., Kontar, E.P., De Pontieu, B., et al.: Solar science with the Atacama Large Millimeter/Submillimeter Array—a new view of our sun. Space Sci. Rev. 200, 1 (2016)

    Article  ADS  Google Scholar 

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  1. JILA, University of Colorado and NIST, Boulder, CO, USA

    Jeffrey Linsky

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Linsky, J. (2019). Stellar Chromospheres: The Source of UV Emission. In: Host Stars and their Effects on Exoplanet Atmospheres . Lecture Notes in Physics, vol 955. Springer, Cham. https://doi.org/10.1007/978-3-030-11452-7_4

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