SplatalogueClass

class astroquery.splatalogue.SplatalogueClass(**kwargs)[source]

Bases: BaseQuery

Initialize a Splatalogue query class with default arguments set. Frequency specification is required for every query, but any default keyword arguments (see query_lines) can be overridden here.

Attributes Summary

ALL_LINE_LISTS

FREQUENCY_BANDS

LINES_LIMIT

QUERY_URL

SLAP_URL

TIMEOUT

TOP20_LIST

versions

Methods Summary

get_fixed_table([columns])

Convenience function to get the table with html column names made human readable.

get_species_ids([restr, reflags, recache])

Get a dictionary of "species" IDs, where species refers to the molecule name, mass, and chemical composition.

query_lines(*args, **kwargs)

Queries the service and returns a table object.

query_lines_async([min_frequency, ...])

The Splatalogue service returns lines with rest frequencies in the range [min_frequency, max_frequency].

set_default_options(**kwargs)

Modify the default options.

Attributes Documentation

ALL_LINE_LISTS = ('Lovas', 'SLAIM', 'JPL', 'CDMS', 'ToyoMA', 'OSU', 'Recomb', 'Lisa', 'RFI')
FREQUENCY_BANDS = {'alma10': 'ALMA Band 10 (787-950 GHz)', 'alma3': 'ALMA Band 3 (84-116 GHz)', 'alma4': ' ALMA Band 4 (125-163 GHz)', 'alma5': ' ALMA Band 5 (163-211 GHz)', 'alma6': 'ALMA Band 6 (211-275 GHz)', 'alma7': 'ALMA Band 7 (275-373 GHz)', 'alma8': 'ALMA Band 8 (385-500 GHz)', 'alma9': 'ALMA Band 9 (602-720 GHz)', 'any': 'Any', 'c': 'GBT/VLA C (3.9-8 GHz)', 'k': 'VLA K (18-26.5 GHz)', 'ka': ' GBT/VLA Ka (26-40 GHz)', 'kfpa': 'GBT KFPA (18-27.5 GHz)', 'ku': ' GBT/VLA Ku (12-18 GHz)', 'l': 'GBT/VLA L (1-2 GHz)', 'mustang': 'GBT Mustang (80-100 GHz)', 'pf1': 'GBT PF1 (0.29-0.92 GHz)', 'pf2': 'GBT PF2 (0.91-1.23 GHz)', 'q': 'GBT/VLA Q (38-50 GHz)', 's': 'GBT/VLA S (1.7-4 GHz)', 'w': 'GBT W (67-93.3 GHz)', 'x': 'GBT/VLA X (8-12 GHz)'}
LINES_LIMIT = 1000
QUERY_URL = 'https://splatalogue.online/c_export.php'
SLAP_URL = 'https://find.nrao.edu/splata-slap/slap'
TIMEOUT = 60
TOP20_LIST = ('comet', 'planet', 'top20', 'ism_hotcore', 'ism_darkcloud', 'ism_diffusecloud')
versions = ('v1.0', 'v2.0', 'v3.0', 'vall')

Methods Documentation

get_fixed_table(columns=None)[source]

Convenience function to get the table with html column names made human readable. It returns only the columns identified with the columns keyword. See the source for the defaults.

get_species_ids(restr=None, reflags=0, recache=False)[source]

Get a dictionary of “species” IDs, where species refers to the molecule name, mass, and chemical composition.

Parameters:
restrstr

String to compile into an re, if specified. Searches table for species whose names match

reflagsint

Flags to pass to re.

recachebool

Flag whether to refresh the local cache of species IDs

Examples

>>> import re
>>> import pprint # unfortunate hack required for documentation testing
>>> rslt = Splatalogue.get_species_ids('Formaldehyde')
>>> pprint.pprint(rslt)
{'03023 H2CO - Formaldehyde': '194',
 '03106 H213CO - Formaldehyde': '324',
 '03107 HDCO - Formaldehyde': '109',
 '03108 H2C17O - Formaldehyde': '982',
 '03202 H2C18O - Formaldehyde': '155',
 '03203 D2CO - Formaldehyde': '94',
 '03204 HD13CO - Formaldehyde': '1219',
 '03301 D213CO - Formaldehyde': '1220',
 '03315 HDC18O - Formaldehyde': '21141',
 '0348 D2C18O - Formaldehyde': '21140'}
>>> rslt = Splatalogue.get_species_ids('H2CO')
>>> pprint.pprint(rslt)
{'03023 H2CO - Formaldehyde': '194',
 '03109 H2COH+ - Hydroxymethylium ion': '224',
 '04406 c-H2COCH2 - Ethylene Oxide': '21',
 '06029 NH2CONH2 - Urea': '21166',
 '07510 H2NCH2COOH - I v=0 - Glycine': '389',
 '07511 H2NCH2COOH - I v=1 - Glycine': '1312',
 '07512 H2NCH2COOH - I v=2 - Glycine': '1313',
 '07513 H2NCH2COOH - II v=0 - Glycine': '262',
 '07514 H2NCH2COOH - II v=1 - Glycine': '1314',
 '07515 H2NCH2COOH - II v=2 - Glycine': '1315',
 '07517 NH2CO2CH3 v=0 - Methyl Carbamate': '1334',
 '07518 NH2CO2CH3 v=1 - Methyl Carbamate': '1335',
 '08902 CH3CHNH2COOH - I - α-Alanine': '1321',
 '08903 CH3CHNH2COOH - II - α-Alanine': '1322'}
>>> # note the whitespace, preventing H2CO within other
>>> # more complex molecules
>>> Splatalogue.get_species_ids(' H2CO ')
{'03023 H2CO - Formaldehyde': '194'}
>>> Splatalogue.get_species_ids(' h2co ', re.IGNORECASE)
{'03023 H2CO - Formaldehyde': '194'}
query_lines(*args, **kwargs)

Queries the service and returns a table object.

The Splatalogue service returns lines with rest frequencies in the range [min_frequency, max_frequency].

Parameters:
min_frequencyastropy.units

Minimum frequency (or any spectral() equivalent)

max_frequencyastropy.units

Maximum frequency (or any spectral() equivalent)

bandstr

The observing band. If it is not ‘any’, it overrides minfreq/maxfreq.

top20: str

One of 'comet', 'planet', 'top20', 'ism_hotcore', 'ism_darkcloud', 'ism_diffusecloud'. Overrides chemical_name

chemical_namestr

Name of the chemical to search for. Treated as a regular expression. An empty set (‘’, (), [], {}) will match any species. Examples:

'H2CO' - 13 species have H2CO somewhere in their formula.

'Formaldehyde' - There are 8 isotopologues of Formaldehyde

(e.g., H213CO).

'formaldehyde' - Thioformaldehyde,Cyanoformaldehyde.

'formaldehyde',chem_re_flags=re.I - Formaldehyde,thioformaldehyde,

and Cyanoformaldehyde.

' H2CO ' - Just 1 species, H2CO. The spaces prevent including

others.

parse_chemistry_locallybool

Attempt to determine the species ID #’s locally before sending the query? This will prevent queries that have no matching species. It also performs a more flexible regular expression match to the species IDs. See the examples in get_species_ids

chem_re_flagsint

See the re module

energy_minNone or float

Energy range to include. See energy_type

energy_maxNone or float

Energy range to include. See energy_type

energy_type'el_cm1', 'eu_cm1', 'eu_k', 'el_k'

Type of energy to restrict. L/U for lower/upper state energy, cm/K for inverse cm, i.e. wavenumber, or K for Kelvin

intensity_lower_limitNone or float

Lower limit on the intensity. See intensity_type

intensity_typeNone or 'sij', 'cdms_jpl', 'aij'

The type of intensity on which to place a lower limit

transitionstr

e.g. 1-0

version'v1.0', 'v2.0', 'v3.0' or 'vall'

Data version

excludelist

Types of lines to exclude. Default is: ('potential', 'atmospheric', 'probable') Can also exclude 'known'. To exclude nothing, use ‘none’, not the python object None, since the latter is meant to indicate ‘leave as default’

only_astronomically_observedbool

Show only astronomically observed species?

only_NRAO_recommendedbool

Show only NRAO recommended species?

line_listslist

Options: Lovas, SLAIM, JPL, CDMS, ToyoMA, OSU, Recomb, Lisa, RFI

line_strengthslist

  • CDMS/JPL Intensity : ls1

  • Sij : ls3

  • Aij : ls4

  • Lovas/AST : ls5

energy_levelslist

  • E_lower (cm^-1) : el1

  • E_lower (K) : el2

  • E_upper (cm^-1) : el3

  • E_upper (K) : el4

exportbool

Set up arguments for the export server (as opposed to the HTML server)?

export_limitint

Maximum number of lines in output file

noHFSbool

No HFS Display

displayHFSbool

Display HFS Intensity

show_unres_qnbool

Display Unresolved Quantum Numbers

show_upper_degeneracybool

Display Upper State Degeneracy

show_molecule_tagbool

Display Molecule Tag

show_qn_codebool

Display Quantum Number Code

show_lovas_labrefbool

Display Lab Ref

show_lovas_obsrefbool

Display Obs Ref

show_orderedfreq_onlybool

Display Ordered Frequency ONLY

show_nrao_recommendedbool

Display NRAO Recommended Frequencies

Returns:
tableA Table object.
query_lines_async(min_frequency=None, max_frequency=None, cache=True, **kwargs)[source]

The Splatalogue service returns lines with rest frequencies in the range [min_frequency, max_frequency].

Parameters:
min_frequencyastropy.units

Minimum frequency (or any spectral() equivalent)

max_frequencyastropy.units

Maximum frequency (or any spectral() equivalent)

bandstr

The observing band. If it is not ‘any’, it overrides minfreq/maxfreq.

top20: str

One of 'comet', 'planet', 'top20', 'ism_hotcore', 'ism_darkcloud', 'ism_diffusecloud'. Overrides chemical_name

chemical_namestr

Name of the chemical to search for. Treated as a regular expression. An empty set (‘’, (), [], {}) will match any species. Examples:

'H2CO' - 13 species have H2CO somewhere in their formula.

'Formaldehyde' - There are 8 isotopologues of Formaldehyde

(e.g., H213CO).

'formaldehyde' - Thioformaldehyde,Cyanoformaldehyde.

'formaldehyde',chem_re_flags=re.I - Formaldehyde,thioformaldehyde,

and Cyanoformaldehyde.

' H2CO ' - Just 1 species, H2CO. The spaces prevent including

others.

parse_chemistry_locallybool

Attempt to determine the species ID #’s locally before sending the query? This will prevent queries that have no matching species. It also performs a more flexible regular expression match to the species IDs. See the examples in get_species_ids

chem_re_flagsint

See the re module

energy_minNone or float

Energy range to include. See energy_type

energy_maxNone or float

Energy range to include. See energy_type

energy_type'el_cm1', 'eu_cm1', 'eu_k', 'el_k'

Type of energy to restrict. L/U for lower/upper state energy, cm/K for inverse cm, i.e. wavenumber, or K for Kelvin

intensity_lower_limitNone or float

Lower limit on the intensity. See intensity_type

intensity_typeNone or 'sij', 'cdms_jpl', 'aij'

The type of intensity on which to place a lower limit

transitionstr

e.g. 1-0

version'v1.0', 'v2.0', 'v3.0' or 'vall'

Data version

excludelist

Types of lines to exclude. Default is: ('potential', 'atmospheric', 'probable') Can also exclude 'known'. To exclude nothing, use ‘none’, not the python object None, since the latter is meant to indicate ‘leave as default’

only_astronomically_observedbool

Show only astronomically observed species?

only_NRAO_recommendedbool

Show only NRAO recommended species?

line_listslist

Options: Lovas, SLAIM, JPL, CDMS, ToyoMA, OSU, Recomb, Lisa, RFI

line_strengthslist

  • CDMS/JPL Intensity : ls1

  • Sij : ls3

  • Aij : ls4

  • Lovas/AST : ls5

energy_levelslist

  • E_lower (cm^-1) : el1

  • E_lower (K) : el2

  • E_upper (cm^-1) : el3

  • E_upper (K) : el4

exportbool

Set up arguments for the export server (as opposed to the HTML server)?

export_limitint

Maximum number of lines in output file

noHFSbool

No HFS Display

displayHFSbool

Display HFS Intensity

show_unres_qnbool

Display Unresolved Quantum Numbers

show_upper_degeneracybool

Display Upper State Degeneracy

show_molecule_tagbool

Display Molecule Tag

show_qn_codebool

Display Quantum Number Code

show_lovas_labrefbool

Display Lab Ref

show_lovas_obsrefbool

Display Obs Ref

show_orderedfreq_onlybool

Display Ordered Frequency ONLY

show_nrao_recommendedbool

Display NRAO Recommended Frequencies

Returns:
responserequests.Response

The response of the HTTP request.

set_default_options(**kwargs)[source]

Modify the default options. See query_lines