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INAF-bidimensional maps of Mercury Na exosphere
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.. contents:: Table of contents

Dataset of observations of Mercury's exosphere in the sodium D lines. Data are taken from the ground-based solar telescope THEMIS (years 2009-2013). They have been produced in both D1 and D2 lines (when both available) and converted into bi-dimensional maps of Rayleigh emission. Estimation of the “seeing” parameter is included in the jpeg files. Here the original fits files are given too for the whole data base (2007-2014), and it may be expanded to the most recent data from 2021 and 2022 (TBC). Data can be provided both uncalibrated and/or calibrated (TBD).

References
~~~~~~~~~~

Leblanc, F., Doressoundiram, A., Schneider, N., Mangano, V., López Ariste, A., Lemen, C., Gelly, B., Barbieri, C. and Cremonese, G., 2008. High latitude peaks in Mercury's sodium exosphere: Spectral signature using THEMIS solar telescope. Geophysical Research Letters, 35(18).

Leblanc, F., Doressoundiram, A., Schneider, N., Massetti, S., Wedlund, M., López Ariste, A., Barbieri, C., Mangano, V. and Cremonese, G., 2009. Short‐term variations of Mercury's Na exosphere observed with very high spectral resolution. Geophysical research letters, 36(7).

Mangano, V., Massetti, S., Milillo, A., Mura, A., Orsini, S. and Leblanc, F., 2013. Dynamical evolution of sodium anisotropies in the exosphere of Mercury. Planetary and Space Science, 82, pp.1-10.

Mangano, V., Massetti, S., Milillo, A., Plainaki, C., Orsini, S., Rispoli, R. and Leblanc, F., 2015. THEMIS Na exosphere observations of Mercury and their correlation with in-situ magnetic field measurements by MESSENGER. Planetary and Space Science, 115, pp.102-109.

Massetti, S., Mangano, V., Milillo, A., Mura, A., Orsini, S. and Plainaki, C., 2017. Short‐term observations of double‐peaked Na emission from Mercury's exosphere. Geophysical Research Letters, 44(7), pp.2970-2977.

Orsini, S., Mangano, V., Milillo, A., Plainaki, C., Mura, A., Raines, J.M., De Angelis, E., Rispoli, R., Lazzarotto, F. and Aronica, A., 2018. Mercury sodium exospheric emission as a proxy for solar perturbations transit. Scientific reports, 8(1), p.928.

Dataset summary
~~~~~~~~~~~~~~~

.. list-table::

  * - **internal_name:**
    - inaf_na_mercexo_image
  * - **publisher:**
    - Valeria Mangano, INAF-IAPS
  * - **alph_code:**
    - 57
  * - **id_tmp:**
    - 76
  * - **short_name:**
    - Merc_exos_Na_fts
  * - **identifier:**
    - aspis://inaf/na_mercexo_image
  * - **dynamic:**
    - period 2009-2013 is static, but if we decide to include also most recent data, it will grow in time.
  * - **size:**
    - 1GB
  * - **format:**
    - fits
  * - **type:**
    - image
  * - **records_number:**
    - 7
  * - **time_start:**
    - 2009-04-17
  * - **time_stop:**
    - 2013-05-25
  * - **spatial:**
    - Mercury
  * - **messenger:**
    - photons
  * - **spectral_min:**
    - 5890
  * - **spectral_max:**
    - 5896
  * - **spectral_units:**
    - Angstrom
  * - **observable:**
    - {IMF,SW,CME}
  * - **latest update:**
    - 2024-04-04 01:59:34

Columns specification
~~~~~~~~~~~~~~~~~~~~~

.. list-table:: 
   :widths: 7 20 15 10 48
   :align: right 
   :header-rows: 1

   * - progr
     - column
     - units
     - type
     - description
   * - 1
     - time
     - UTC
     - datetime
     - date and time of start of spectral scan
   * - 2
     - heliocentric_longitude
     - deg
     - float
     - Mercury heliocentric longitude [deg]
   * - 3
     - heliocentric_latitude
     - deg
     - float
     - Mercury heliocentric latitude [deg]
   * - 4
     - heliocentric_distance
     - AU
     - float
     - Mercury heliocentric distance [AU]
   * - 5
     - true_anomaly_angle
     - deg
     - float
     - Mercury True Anomaly Angle [deg]
   * - 6
     - phase_angle
     - deg
     - float
     - Mercury Phase Angle [deg]
   * - 7
     - disk_visibility
     - %
     - float
     - Percentage of Mercury disk lit by the Sun
   * - 8
     - seeing
     - arcsec
     - float
     - estimated seeing during the spectral scan [arcsec]
   * - 9
     - seeing err
     - arcsec
     - float
     - error associated with the seeing estimation [arcsec]
   * - 10
     - ave emission
     - kR
     - float
     - Average value of the D2 Na emission [kR]
   * - 11
     - emission err
     - kR
     - float
     - error associated with the Average value of the Na emission [kR]
   * - 12
     - type
     - char
     - string
     - code for emission peaks morphology according to doi.org/10.1016/j.pss.2015.04.001
   * - 13
     - data_name
     - char
     - string
     - the name of the file with the data
   * - 14
     - prew_name
     - char
     - string
     - the name of the full preview file
   * - 15
     - thumb_name
     - char
     - string
     - the name of the thumbnail file
