Table information for 'help_a_list.main'

General

This table is available for ADQL queries and through the TAP endpoint.

Resource Description: HELP A List catalogue.

For a list of all services and tables belonging to this table's resource, see Information on resource 'Herschel Extragalactic Legacy Project (HELP) A list'

Citing this table

This table has an associated publication. If you use data from it, it may be appropriate to reference either in addition to or instead of the service reference.

Reference the Table

To cite the table as such, we suggest the following BibTeX entry:

@MISC{vo:help_a_list_main,
  year=2020,
  title={Herschel Extragalactic Legacy Project ({HELP}) A list},
  author={Shirley, R.; Roehlly, Y.; et al},
  url={https://herschel-vos.phys.sussex.ac.uk/tableinfo/help_a_list.main},
  howpublished={{VO} resource provided by the The Virtual Observatory at susseX ({VOX})}
}

Fields

Sorted by DB column index. [Sort alphabetically]

Name	Table Head	Description	Unit	UCD
field	Field	Name of the field in HELP survey	N/A	meta.id;obs.field
help_id	HELP_Id	HELP identifier, based on J2000 position	N/A	meta.id;meta.main
ra	RA	Right Ascension (J2000)	deg	pos.eq.ra;meta.main
dec	Dec	Declination (J2000)	deg	pos.eq.dec;meta.main
hp_idx	HP_Idx	HEALPix index of the source position at order 13 using the nested scheme.	N/A	pos.healpix
ebv	EBV	Galactic extinction (Schlegel et al. 1998) at the object position	N/A	phot.color.excess
redshift	Redshift	Photometric redshift obtained with EAZY.	N/A	src.redshift.phot
zspec	zSpec	Spectroscopic redshift collated from the literature.	N/A	src.redsfhit
zspec_qual	zSpec_qual	Spectroscopic redshift quality flag. FIXME code meaning.	N/A	meta.code.qual;src.redshift
zspec_association_flag	zSpec_Association_Flag	Boolean flag set to true when the association of a source to it's redshift may be problematic (possible mis-cross-association).	N/A	meta.code;src.redshift
stellarity	stellarity	Index evaluation is the source is point-source: for 0 (not point source) to 1 (point source). Generally name stellarity index.	N/A	src.class.starGalaxy
stellarity_origin	stellarity_origin	Name of Survey from which stellarity is calculated.	N/A	meta.code;src.class.starGalaxy
f_best_u	f_best_u	Total flux density in the lowest error u band measurement.	uJy	phot.flux;em.opt.U
ferr_best_u	ferr_best_u	Uncertainty on f_best_u.	uJy	stat.error;phot.flux;em.opt.U
m_best_u	m_best_u	Total AB magnitude in the lowest error u band measurement.	mag	phot.mag;em.opt.U
merr_best_u	merr_best_u	Uncertainty on m_best_u.	mag	stat.error;phot.mag;em.opt.U
flag_best_u	flag_best_u	Flag set to true for sources with spurious measurements (see documentation).	N/A	meta.code.qual;em.opt.U
f_best_g	f_best_g	Total flux density in the lowest error g band measurement.	uJy	phot.flux;em.opt.B
ferr_best_g	ferr_best_g	Uncertainty on f_best_g.	uJy	stat.error;phot.flux;em.opt.B
m_best_g	m_best_g	Total AB magnitude in the lowest error g band measurement.	mag	phot.mag;em.opt.B
merr_best_g	merr_best_g	Uncertainty on m_best_g.	mag	stat.error;phot.mag;em.opt.B
flag_best_g	flag_best_g	Flag set to true for sources with spurious measurements (see documentation).	N/A	meta.code.qual;em.opt.B
f_best_r	f_best_r	Total flux density in the lowest error r band measurement.	uJy	phot.flux;em.opt.R
ferr_best_r	ferr_best_r	Uncertainty on f_best_r.	uJy	stat.error;phot.flux;em.opt.R
m_best_r	m_best_r	Total AB magnitude in the lowest error r band measurement.	mag	phot.mag;em.opt.R
merr_best_r	merr_best_r	Uncertainty on m_best_r.	mag	stat.error;phot.mag;em.opt.R
flag_best_r	flag_best_r	Flag set to true for sources with spurious measurements (see documentation).	N/A	meta.code.qual;em.opt.R
f_best_i	f_best_i	Total flux density in the lowest error i band measurement.	uJy	phot.flux;em.opt.I
ferr_best_i	ferr_best_i	Uncertainty on f_best_i.	uJy	stat.error;phot.flux;em.opt.I
m_best_i	m_best_i	Total AB magnitude in the lowest error i band measurement.	mag	phot.mag;em.opt.I
merr_best_i	merr_best_i	Uncertainty on m_best_i.	mag	stat.error;phot.mag;em.opt.I
flag_best_i	flag_best_i	Flag set to true for sources with spurious measurements (see documentation).	N/A	meta.code.qual;em.opt.I
f_best_z	f_best_z	Total flux density in the lowest error z band measurement.	uJy	phot.flux;em.opt.I
ferr_best_z	ferr_best_z	Uncertainty on f_best_z.	uJy	stat.error;phot.flux;em.opt.I
m_best_z	m_best_z	Total AB magnitude in the lowest error z band measurement.	mag	phot.mag;em.opt.I
merr_best_z	merr_best_z	Uncertainty on m_best_z.	mag	stat.error;phot.mag;em.opt.I
flag_best_z	flag_best_z	Flag set to true for sources with spurious measurements (see documentation).	N/A	meta.code.qual;em.opt.I
f_best_y	f_best_y	Total flux density in the lowest error y band measurement.	uJy	phot.flux;em.opt.I
ferr_best_y	ferr_best_y	Uncertainty on f_best_y.	uJy	stat.error;phot.flux;em.opt.I
m_best_y	m_best_y	Total AB magnitude in the lowest error y band measurement.	mag	phot.mag;em.opt.I
merr_best_y	merr_best_y	Uncertainty on m_best_y.	mag	stat.error;phot.mag;em.opt.I
flag_best_y	flag_best_y	Flag set to true for sources with spurious measurements (see documentation).	N/A	meta.code.qual;em.opt.I
f_best_j	f_best_j	Total flux density in the lowest error j band measurement.	uJy	phot.flux;em.IR.J
ferr_best_j	ferr_best_j	Uncertainty on f_best_j.	uJy	stat.error;phot.flux;em.IR.J
m_best_j	m_best_j	Total AB magnitude in the lowest error j band measurement.	mag	phot.mag;em.IR.J
merr_best_j	merr_best_j	Uncertainty on m_best_j.	mag	stat.error;phot.mag;em.IR.J
flag_best_j	flag_best_j	Flag set to true for sources with spurious measurements (see documentation).	N/A	meta.code.qual;em.IR.J
f_best_h	f_best_h	Total flux density in the lowest error h band measurement.	uJy	phot.flux;em.IR.H
ferr_best_h	ferr_best_h	Uncertainty on f_best_h.	uJy	stat.error;phot.flux;em.IR.H
m_best_h	m_best_h	Total AB magnitude in the lowest error h band measurement.	mag	phot.mag;em.IR.H
merr_best_h	merr_best_h	Uncertainty on m_best_h.	mag	stat.error;phot.mag;em.IR.H
flag_best_h	flag_best_h	Flag set to true for sources with spurious measurements (see documentation).	N/A	meta.code.qual;em.IR.H
f_best_k	f_best_k	Total flux density in the lowest error k band measurement.	uJy	phot.flux;em.IR.K
ferr_best_k	ferr_best_k	Uncertainty on f_best_k.	uJy	stat.error;phot.flux;em.IR.K
m_best_k	m_best_k	Total AB magnitude in the lowest error k band measurement.	mag	phot.mag;em.IR.K
merr_best_k	merr_best_k	Uncertainty on m_best_k.	mag	stat.error;phot.mag;em.IR.K
flag_best_k	flag_best_k	Flag set to true for sources with spurious measurements (see documentation).	N/A	meta.code.qual;em.IR.K
f_best_ks	f_best_ks	Total flux density in the lowest error ks band measurement.	uJy	phot.flux;em.IR.K
ferr_best_ks	ferr_best_ks	Uncertainty on f_best_ks.	uJy	stat.error;phot.flux;em.IR.K
m_best_ks	m_best_ks	Total AB magnitude in the lowest error ks band measurement.	mag	phot.mag;em.IR.K
merr_best_ks	merr_best_ks	Uncertainty on m_best_ks.	mag	stat.error;phot.mag;em.IR.K
flag_best_ks	flag_best_ks	Flag set to true for sources with spurious measurements (see documentation).	N/A	meta.code.qual;em.IR.K
f_irac_i1	f_irac_i1	Total flux density in the 3-4um band of The Infrared Array Camera (IRAC) on The Spitzer Space Telescope.	uJy	phot.flux;em.IR.3-4um
ferr_irac_i1	ferr_irac_i1	Uncertainty on f_irac_i1.	uJy	stat.error;phot.flux;em.IR.3-4um
m_irac_i1	m_irac_i1	Total AB magnitude in the 3-4um band of The Infrared Array Camera (IRAC) on The Spitzer Space Telescope.	mag	phot.mag;em.IR.3-4um
merr_irac_i1	merr_irac_i1	Uncertainty on m_irac_i1.	mag	stat.error;phot.mag;em.IR.3-4um
flag_irac_i1	flag_irac_i1	Flag set to true for sources for which niether the irac_i1 aperture nor total flux should be used for SED fitting (see documentation).	N/A	meta.code.qual;em.IR.3-4um
f_irac_i2	f_irac_i2	Total flux density in the 4-8um band of The Infrared Array Camera (IRAC) on The Spitzer Space Telescope.	uJy	phot.flux;em.IR.4-8um
ferr_irac_i2	ferr_irac_i2	Uncertainty on f_irac_i2.	uJy	stat.error;phot.flux;em.IR.4-8um
m_irac_i2	m_irac_i2	Total AB magnitude in the 4-8um band of The Infrared Array Camera (IRAC) on The Spitzer Space Telescope.	mag	phot.mag;em.IR.4-8um
merr_irac_i2	merr_irac_i2	Uncertainty on m_irac_i2.	mag	stat.error;phot.mag;em.IR.4-8um
flag_irac_i2	flag_irac_i2	Flag set to true for sources for which niether the irac_i2 aperture nor total flux should be used for SED fitting (see documentation).	N/A	meta.code.qual;em.IR.4-8um
f_irac_i3	f_irac_i3	Total flux density in the 4-8um band of The Infrared Array Camera (IRAC) on The Spitzer Space Telescope.	uJy	phot.flux;em.IR.4-8um
ferr_irac_i3	ferr_irac_i3	Uncertainty on f_irac_i3.	uJy	stat.error;phot.flux;em.IR.4-8um
m_irac_i3	m_irac_i3	Total AB magnitude in the 4-8um band of The Infrared Array Camera (IRAC) on The Spitzer Space Telescope.	mag	phot.mag;em.IR.4-8um
merr_irac_i3	merr_irac_i3	Uncertainty on m_irac_i3.	mag	stat.error;phot.mag;em.IR.4-8um
flag_irac_i3	flag_irac_i3	Flag set to true for sources for which niether the irac_i3 aperture nor total flux should be used for SED fitting (see documentation).	N/A	meta.code.qual;em.IR.4-8um
f_irac_i4	f_irac_i4	Total flux density in the 8-15um band of The Infrared Array Camera (IRAC) on The Spitzer Space Telescope.	uJy	phot.flux;em.IR.8-15um
ferr_irac_i4	ferr_irac_i4	Uncertainty on f_irac_i4.	uJy	stat.error;phot.flux;em.IR.8-15um
m_irac_i4	m_irac_i4	Total AB magnitude in the 8-15um band of The Infrared Array Camera (IRAC) on The Spitzer Space Telescope.	mag	phot.mag;em.IR.8-15um
merr_irac_i4	merr_irac_i4	Uncertainty on m_irac_i4.	mag	stat.error;phot.mag;em.IR.8-15um
flag_irac_i4	flag_irac_i4	Flag set to true for sources for which niether the irac_i4 aperture nor total flux should be used for SED fitting (see documentation).	N/A	meta.code.qual;em.IR.8-15um
f_mips_24	f_mips_24	Total flux density in the 15-30um band of The Multiband Imaging Photometer (MIPS) on The Spitzer Space Telescope.	uJy	phot.flux;em.IR.15-30um
ferr_mips_24	ferr_mips_24	Uncertainty on f_mips_24.	uJy	stat.error;phot.flux;em.IR.15-30um
flag_mips_24	flag_mips_24	Flag set to true for sources for which niether the mips_24 aperture nor total flux should be used for SED fitting (see documentation).	N/A	meta.code.qual;em.IR.15-30um
f_pacs_green	f_pacs_green	Total flux density in the 60-100um band of Photoconductor Array Camera and Spectrometer (PACS) on The Herschel Space Telescope.	uJy	phot.flux;em.IR.60-100um
ferr_pacs_green	ferr_pacs_green	Uncertainty on f_pacs_green.	uJy	stat.error;phot.flux;em.IR.60-100um
flag_pacs_green	flag_pacs_green	Flag set to true for sources for which niether the pacs_green aperture nor total flux should be used for SED fitting (see documentation).	N/A	meta.code.qual;em.IR.60-100um
f_pacs_red	f_pacs_red	Total flux density in the 1500-3000GHz band of Photoconductor Array Camera and Spectrometer (PACS) on The Herschel Space Telescope.	uJy	phot.flux;em.IR.1500-3000GHz
ferr_pacs_red	ferr_pacs_red	Uncertainty on f_pacs_red.	uJy	stat.error;phot.flux;em.IR.1500-3000GHz
flag_pacs_red	flag_pacs_red	Flag set to true for sources for which niether the pacs_red aperture nor total flux should be used for SED fitting (see documentation).	N/A	meta.code.qual;em.IR.1500-3000GHz
f_spire_250	f_spire_250	Total flux density in the 750-1500GHz band of The Spectral and Photometric Imaging Reciever (SPIRE) on The Herschel Space Telescope.	uJy	phot.flux;em.IR.750-1500GHz
ferr_spire_250	ferr_spire_250	Uncertainty on f_spire_250.	uJy	stat.error;phot.flux;em.IR.750-1500GHz
flag_spire_250	flag_spire_250	Flag set to true for sources for which niether the spire_250 aperture nor total flux should be used for SED fitting (see documentation).	N/A	meta.code.qual;em.IR.750-1500GHz
f_spire_350	f_spire_350	Total flux density in the 750-1500GHz band of The Spectral and Photometric Imaging Reciever (SPIRE) on The Herschel Space Telescope.	uJy	phot.flux;em.IR.750-1500GHz
ferr_spire_350	ferr_spire_350	Uncertainty on f_spire_350.	uJy	stat.error;phot.flux;em.IR.750-1500GHz
flag_spire_350	flag_spire_350	Flag set to true for sources for which niether the spire_350 aperture nor total flux should be used for SED fitting (see documentation).	N/A	meta.code.qual;em.IR.750-1500GHz
f_spire_500	f_spire_500	Total flux density in the 400-750GHz band of The Spectral and Photometric Imaging Reciever (SPIRE) on The Herschel Space Telescope.	uJy	phot.flux;em.IR.400-750GHz
ferr_spire_500	ferr_spire_500	Uncertainty on f_spire_500.	uJy	stat.error;phot.flux;em.IR.400-750GHz
flag_spire_500	flag_spire_500	Flag set to true for sources for which niether the spire_500 aperture nor total flux should be used for SED fitting (see documentation).	N/A	meta.code.qual;em.IR.400-750GHz
cigale_sfr	CIGALE_SFR	Star Formation Rate estimated by SED fitting with CIGALE.	Msun/yr	phys.SFR
cigale_sfr_err	CIGALE_SFR_err	Uncertainty on CIGALE_SFR.	Msun/yr	stat.error;phys.SFR
cigale_mstar	CIGALE_Mstar	Stellar Mass estimated by SED fitting with CIGALE.	Msun	phys.mass
cigale_mstar_err	CIGALE_Mstar_err	Uncertainty on CIGALE_Mstar	Msun	stat.error;phys.mass
cigale_dustlumin	CIGALE_DustLumin	Dust luminosity estimated by SED fitting with CIGALE using both optical and infra-red information.	W	phys.dust;phys.luminosity
cigale_dustlumin_err	CIGALE_DustLumin_err	Uncertainty on CIGALE_DustLumin.	W	stat.error;phys.dust;phys.luminosity
cigale_dustlumin_ironly	CIGALE_DustLumin_IRonly	Dust luminosity estimated by SED fitting with CIGALE using only the infra-red information.	W	phys.dust;phys.luminosity
cigale_dustlumin_ironly_err	CIGALE_DustLumin_IRonly_err	Uncertainty on CIGALE_DustLumin_IRonly	W	stat.error;phys.dust;phys.luminosity
cigale_chi2_opt	cigale_chi2_opt	Reduced optical chi squared of best CIGALE fit to all data.	N/A	stat.fit.chi2
cigale_chi2_ir	cigale_chi2_ir	Reduced infrared chi squared of best CIGALE fit to all data.	N/A	stat.fit.chi2
cigale_chi2_red	cigale_chi2_red	Reduced chi squared of best CIGALE fit.	N/A	stat.fit.chi2
cigale_chi2_ironly	cigale_chi2_ironly	Reduced chi squared of best CIGALE fit to infrared data.	N/A	stat.fit.chi2
flag_gaia	Flag_Gaia	Flag indicating the increasing probability of the source being a Gaia object (see note). [Note 1]	N/A	meta.code
flag_cleaned	Flag_Cleaned	Boolean flag denoting that the source was associated to really near object that were removed during the cleaning procedure.	N/A	meta.code
flag_merged	Flag_Merged	Boolean flag denoting a possible mis-association during the cross-matching of the various catalogues.	N/A	meta.code
flag_optnir_obs	Flag_OptNIR_Obs	Flag indicating in which wavelength regimes the source was observed (see note). [Note 2]	N/A	meta.code
flag_optnir_det	Flag_OptNIR_Det	Flag indicating in which wavelength regimes the source was detected (see note). [Note 2]	N/A	meta.code

Columns that are parts of indices are marked like this.

Other

The following services may use the data contained in this table:

HELP A list catalogue

VOResource

VO nerds may sometimes need VOResource XML for this table.

Notes

Note 1

The Flag_Gaia is computed by cross-matching the catalogue with the Gaia catalogue:

Value	Meaning
1	The object if possibly a Gaia object: the nearest Gaia source is between 1.5 arcsec and 2 arcsec.
2	The object if probably a Gaia object: the nearest Gaia source is between 0.6 arcsec and 1.5 arcsec.
3	The object is definitely a Gaia object: the nearest Gaia source is nearer than 0.6 arcsec.
0	Otherwise (the nearest Gaia source is farer than 2 arcsec).

Note 2
The Flag_OptNIR_Obs and Flag_OptNIR_Det are computed while cross-matching the optical and near/mid infrared catalogues and indicate if a source was observed (i.e. is on the coverage of surveys at the given regime) or detected (i.e. is present in the catalogue) in various wavelength regime. The detection is based on the detection wavelengths of the catalogues, and to be counted as detected, a source must be present in at least two catalogues.

The flag is a composed binary flag with these values:

Value Meaning

1 Observation/detection in optical wavelengths.

2 Observation/detection in near-infrared wavelengths.

4 Observation/detection in mid-infrared wavelengths.

More Information on the Base Resource

This resource contains the A list catalogue from the Herschel Extragalactic Legacy Project (HELP). These are all objects which have an XID+ flux.

History

20201027

HELP First public data release with all products on all fields (PDR1)

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