PLANCKGCC ivo://nasa.heasarc/planckgcc NASA/GSFC HEASARC Planck Collaboration et al. 2026-10-09 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Survey Source The authors present the Planck Catalog of Galactic Cold Clumps (PGCC), an all-sky catalog of Galactic cold clump candidates detected by Planck. This catalog is the full version of the Early Cold Core (ECC) catalog, which was made available in 2011 with the Early Release Compact Source Catalog (ERCSC) and which contained 915 high signal-to-noise sources. It is based on the Planck 48-month mission data that are currently being released to the astronomical community. The PGCC catalog is an observational catalog consisting exclusively of Galactic cold sources. The three highest Planck bands (857, 454, and 353GHz) have been combined with IRAS data at 3THz to perform a multi-frequency detection of sources colder than their local environment. After rejection of possible extragalactic contaminants, the PGCC catalog contains 13188 Galactic sources spread across the whole sky, i.e., from the Galactic plane to high latitudes, following the spatial distribution of the main molecular cloud complexes. The median temperature of PGCC sources lies between 13 and 14.5K, depending on the quality of the flux density measurements, with a temperature ranging from 5.8 to 20K after removing the sources with the top 1% highest temperature estimates. Using seven independent methods, reliable distance estimates have been obtained for 5574 sources, which allows the authors to derive their physical properties such as their mass, physical size, mean density, and luminosity. The PGCC sources are located mainly in the solar neighborhood, but also up to a distance of 10.5kpc in the direction of the Galactic center, and range from low-mass cores to large molecular clouds. Because of this diversity and because the PGCC catalog contains sources in very different environments, the catalog is useful for investigating the evolution from molecular clouds to cores. Finally, it also includes 54 additional sources located in the Small and Large Magellanic Clouds. This catalog is based on three highest Planck frequency channels (i.e., 857, 545, 353 GHz), which are designed to cover the Galactic cold dust emission peak. The 217 GHz band is not included for two reasons: first, the band is contaminated by the CO J=2->1 emission line, which is expected to be significant towards dense regions; second, the contamination by the cosmic microwave background may become problematic at high latitude. The Planck data are combined with the IRIS all-sky data (Miville-Deschenes & Lagache 2005). The IRIS 3THz (100{mu}m) data were chosen to complement the Planck data because it is a good tracer of Galactic warm (~20 K) dust, among other reasons provided in the paper. This table was created by the HEASARC in March 2019 based upon the <a href="https://cdsarc.cds.unistra.fr/ftp/cats/J/A+A/594/A28">CDS Catalog J/A+A/594/A28</a> file pgcc.dat. This is a service provided by NASA HEASARC . 2016A&A...594A..28P https://heasarc.gsfc.nasa.gov/W3Browse/all/planckgcc.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=planckgcc& GET text/xml 180 99999 true 141.375839 -88.305458 0.0166666666666667 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=planckgcc GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_planckgcc&Action=More+Options&Action=Parameter+Search&ConeAdd=1 PLANCK 0.0166666666666667 Radio public planckgcc Planck Catalog of Galactic Cold Clumps (PGCC) name Source Designation meta.id;meta.main char nullable ra Right Ascension degree pos.eq.ra;meta.main double nullable dec Declination degree pos.eq.dec;meta.main double nullable temperature Temperature of the Clump with Beta As a Free Parameter (TEMP_CLUMP) K phys.temperature double nullable temperature_error 1-Sigma Uncertainty on the Clump Temperature with Beta Free (TEMP_CLUMP_SIG) K stat.error;phys.temperature double nullable spectral_index Spectral Index Beta of the Clump (BETA_CLUMP) spect.index double nullable spectral_index_error 1-Sigma Uncertainty on the Emissivity Spectral Index Beta of the Clump stat.error;spect.index double nullable "distance" Best Distance Estimate Used for Further Physical Properties (DIST) kpc pos.distance double nullable distance_error 1-Sigma Uncertainty on the Best Distance Estimate (DIST_SIG) kpc stat.error;pos.distance double nullable mass Mass Estimate of the Clump (Mass) Solar_Mass phys.mass double nullable mass_error 1-Sigma Uncertainty on the Mass Estimate of the Clump (MASS_SIG) Solar_Mass stat.error;phys.mass double nullable flux_857_ghz_bkg Flux Density of the Warm Background at 857 GHz (Flux_857_WBKG) mJy phot.flux.density;em.mm.400-750GHz double nullable temp_bkg_alt_lower Upper 68% Confidence Limit of the Warm Background Temperature with Beta=2 K phys.temperature;stat.max double nullable distance_alt5_error 1-Sigma Uncertainty in Distance Estimate [5] Using Near-Infrared Extinction kpc stat.error;pos.distance double nullable temp_bkg_alt_upper Lower 68% Confidence Limit of the Warm Background Temperature with Beta=2 K phys.temperature;stat.min double nullable spectral_index_bkg_upper Upper 68% Confidence Limit of Emissivity Spectral Index Beta of Warm Background spect.index;stat.max double nullable blend_bias_857_ghz Relative Bias of the Flux Density at 857 GHz Due to Blending percent phot.flux.density;em.radio double nullable lii Galactic Longitude degree pos.galactic.lon double nullable distance_alt7 Distance Estimate [7] from the Herschel Key-Programme Galactic Cold Cores kpc pos.distance double nullable offset_hot_source Angular Distance to the Closest Hot Source (NEARBY_HOT_SOURCE) arcmin pos.angDistance double nullable flux_857_ghz Flux Density of the Clump at 857 GHz (Flux_857_CLUMP) mJy phot.flux.density;em.mm.400-750GHz double nullable pccs_30_ghz_flag Boolean Flag [01] Indicates Presence in the PCCS 30-GHz Band (XFLAG_PCCS_30) meta.code short nullable spectral_index_upper Upper 68% Confidence Limit of the Emissivity Spectral Index Beta of the Clump spect.index;stat.max double nullable spectral_index_bkg Spectral Index Beta of the Warm Background (BETA_WBKG) spect.index double nullable psz_flag Boolean Flag [01] Indicates Presence in the PCCS PSZ (XFLAG_PSZ) meta.code short nullable mass_upper Upper 68% Confidence Limit of the Mass Estimate (MASS_UP1) Solar_Mass phys.mass;stat.max double nullable size_upper Upper 68% Confidence Limit of the Physical Size Estimate (SIZE_UP1) pc phys.size.diameter;stat.max double nullable distance_alt1_error 1-Sigma Uncertainty in Distance Estimate [1] Using Kinematics kpc stat.error;pos.distance double nullable position_angle_error 1-Sigma Uncertainty on Position Angle (GAU_POSITION_ANGLE_SIG) degree stat.error;pos.posAng double nullable nh2_error 1-Sigma Uncertainty on the Column Density (NH2_SIG) cm^-2 stat.error;phys.columnDensity double nullable spectral_index_bkg_error 1-Sigma Uncertainty of the Emissivity Spectral Index Beta of Warm Background stat.error;spect.index double nullable blend_bias_545_ghz Relative Bias of the Flux Density at 545 GHz Due to Blending percent phot.flux.density;em.radio double nullable flux_353_ghz_bkg Flux Density of the Warm Background at 353 GHz (Flux_353_WBKG) mJy phot.flux.density;em.mm.200-400GHz double nullable distance_alt2_error 1-Sigma Uncertainty in Distance Estimate [2] Using SDSS DR7 Optical Extinction kpc stat.error;pos.distance double nullable distance_alt7_error 1-Sigma Uncertainty on Distance Estimate [7] from Herschel Galactic Cold Cores kpc stat.error;pos.distance double nullable nh2 Column Density NH2 of the Clump (NH2) cm^-2 phys.columnDensity double nullable distance_alt6 Distance Estimate [6] Using Molecular Complex Association kpc pos.distance double nullable flux_353_ghz_error 1-Sigma Uncertainty on the Flux Density of the Clump at 353 GHz mJy stat.error;phot.flux.density;em.mm.200-400GHz double nullable pccs_44_ghz_flag Boolean Flag [01] Indicates Presence in the PCCS 44-GHz Band (XFLAG_PCCS_44) meta.code short nullable density_upper_2sig Upper 95% Confidence Limit of the Mean Density Estimate (DENSITY_UP2) cm^-3 phys.density;stat.max double nullable flux_545_ghz_bkg Flux Density of the Warm Background at 545 GHz (Flux_545_WBKG) mJy phot.flux.density;em.mm.400-750GHz double nullable blend_bias_353_ghz Relative Bias of the Flux Density at 353 GHz Due to Blending percent phot.flux.density;em.radio double nullable nh2_lower Lower 68% Confidence Limit of the Column Density (NH2_LOW1) cm^-2 stat.error;phys.columnDensity double nullable nh2_upper_3sig Upper 99% Confidence Limit of the Column Density (NH2_UP3) cm^-2 stat.error;phys.columnDensity double nullable mass_lower_2sig Lower 95% Confidence Limit of the Mass Estimate (MASS_LOW2) Solar_Mass phys.mass;stat.min double nullable distance_alt3 Distance Estimate [3] Using Optical Extinction on SDSS DR9 (DIST_OPT_EXT_DR9) kpc pos.distance double nullable flux_353_ghz Flux Density of the Clump at 353 GHz (Flux_353_CLUMP) mJy phot.flux.density;em.mm.200-400GHz double nullable position_angle Position Angle of the Elliptical Gaussian (GAU_POSITION_ANGLE) degree pos.posAng double nullable distance_alt2 Distance Estimate [2] Using Optical Extinction on SDSS DR7 (DIST_OPT_EXT_DR7) kpc pos.distance double nullable density Mean Density of the Clump (Density) cm^-3 phys.density double nullable size_error 1-Sigma Uncertainty on the Physical Size Estimate of the Clump (SIZE_SIG) pc stat.error;phys.size.diameter double nullable distance_alt4_error 1-Sigma Uncertainty in Dist. Est. [4] Using Near-IR Extinction Towards IRDCs kpc stat.error;pos.distance double nullable snr Maximum Signal-to-Noise Ratio Over 857, 545, 353 GHz Planck Cold Residual Maps stat.snr double nullable density_lower_3sig Lower 99% Confidence Limit of the Mean Density Estimate (DENSITY_LOW3) cm^-3 phys.density;stat.min double nullable density_lower Lower 68% Confidence Limit of the Mean Density Estimate (DENSITY_LOW1) cm^-3 phys.density;stat.min double nullable temperature_upper Upper 68% Confidence Limit of the Clump Temperature with Beta Free K phys.temperature;stat.max double nullable distance_alt6_error 1-Sigma Uncertainty on Distance Estimate [6] Using Molecular Complex Association kpc stat.error;pos.distance double nullable temp_bkg_error 1-Sigma Dispersion of the Warm Background Temperature with Beta Free K stat.error;phys.temperature double nullable flux_545_ghz Flux Density of the Clump at 545 GHz (Flux_545_CLUMP) mJy phot.flux.density;em.mm.400-750GHz double nullable distance_alt5 Distance Estimate [5] Using Near-Infrared Extinction (DIST_NIR_EXT) kpc pos.distance double nullable distance_quality_flag Quality Flag [0-4] of the Consistency Between Distance Estimates (DIST_QUALITY) meta.code.qual short nullable temperature_lower Lower 68% Confidence Limit of the Clump Temperature with Beta Free K phys.temperature;stat.min double nullable temp_bkg_alt_error 1-Sigma Uncertainty on the Temperature of the Warm Background with Beta=2 K stat.error;phys.temperature double nullable temp_bkg_alt Temperature of the Warm Background with Beta=2 (TEMP_BETA2_WBKG) K phys.temperature double nullable mass_lower Lower 68% Confidence Limit of the Mass Estimate (MASS_LOW1) Solar_Mass phys.mass;stat.min double nullable size_lower_2sig Lower 95% Confidence Limit of the Physical Size Estimate (SIZE_LOW2) pc phys.size.diameter;stat.min double nullable nh2_upper_2sig Upper 95% Confidence Limit of the Column Density (NH2_UP2) cm^-2 stat.error;phys.columnDensity double nullable pccs_857_ghz_flag Boolean Flag [01] Indicates Presence in the PCCS 857-GHz Band (XFLAG_PCCS_857) meta.code short nullable pccs_143_ghz_flag Boolean Flag [01] Indicates Presence in the PCCS 143-GHz Band (XFLAG_PCCS_143) meta.code short nullable mass_upper_3sig Upper Confidence Limit of the Mass Estimate (MASS_UP3) Solar_Mass phys.mass;stat.max double nullable flux_545_ghz_error 1-Sigma Uncertainty on the Flux Density of the Clump at 545 GHz mJy stat.error;phot.flux.density;em.mm.400-750GHz double nullable snr_353_ghz Signal-to-Noise Ratio of the Cold Residual Detection at 353 GHz (SNR_353) stat.snr double nullable temperature_alt_error 1-Sigma Uncertainty on the Temperature of the Clump with Beta=2 K stat.error;phys.temperature double nullable blend_offset Angular Distance to the Closest Source Responsible for Blending arcmin meta.curation;pos.angDistance double nullable distance_flag Flag [0-7] for Best Distance Estimate Used in Other Physical Properties meta.code;pos.distance short nullable temperature_alt_upper Upper 68% Confidence Limit of the Clump Temperature with Beta=2 K phys.temperature;stat.max double nullable size_lower_3sig Lower 99% Confidence Limit of the Physical Size Estimate (SIZE_LOW3) pc phys.size.diameter;stat.min double nullable flux_353_ghz_bkg_error 1-Sigma Uncertainty on the Flux Density of the Warm Background at 353 GHz mJy stat.error;phot.flux.density;em.mm.200-400GHz double nullable bii Galactic Latitude degree pos.galactic.lat double nullable distance_alt1 Distance Estimate [1] Using Kinematics (DIST_KINEMATIC) kpc pos.distance double nullable blend_bias_3000_ghz Relative Bias of the Flux Density at 3000 GHz Due to Blending percent phot.flux.density;em.radio double nullable spectral_index_bkg_lower Lower 68% Confidence Limit of Emissivity Spectral Index Beta of Warm Background spect.index;stat.min double nullable "size" Physical Size of the Clump (Size) pc phys.size.diameter double nullable flux_3000_ghz Flux Density of the Clump at 3 THz (Flux_3000_CLUMP) mJy phot.flux.density;em.IR.60-100um double nullable blend_catalog_index Catalog Index of the Closest Source Responsible for Blending (Flux_BLENDING_IDX) meta.id int nullable temp_bkg_upper Upper 68% Confidence Limit of the Warm Background Temperature with Beta Free K phys.temperature;stat.max double nullable lmc_flag Boolean Flag [01] Indicates Part of the LMC (XFLAG_LMC) meta.code short nullable major_axis_error 1-Sigma Uncertainty on FWHM Along the Major Axis (GAU_MAJOR_AXIS_SIG) arcmin stat.error;phys.angSize.smajAxis double nullable size_upper_2sig Upper 95% Confidence Limit of the Physical Size Estimate (SIZE_UP2) pc phys.size.diameter;stat.max double nullable nh2_lower_3sig Lower 99% Confidence Limit of the Column Density (NH2_LOW3) cm^-2 stat.error;phys.columnDensity double nullable flux_3000_ghz_bkg Flux Density of the Warm Background at 3THz (Flux_3000_WBKG) mJy phot.flux.density;em.IR.60-100um double nullable nh2_upper Upper 68% Confidence Limit of the Column Density (NH2_UP1) cm^-2 stat.error;phys.columnDensity double nullable snr_545_ghz Signal-to-Noise Ratio of the Cold Residual Detection at 545 GHz (SNR_545) stat.snr double nullable flux_545_ghz_bkg_error 1-Sigma Uncertainty on the Flux Density of the Warm Background at 545 GHz mJy stat.error;phot.flux.density;em.mm.400-750GHz double nullable density_lower_2sig Lower 95% Confidence Limit of the Mean Density Estimate (DENSITY_LOW2) cm^-3 phys.density;stat.min double nullable pccs_100_ghz_flag Boolean Flag [01] Indicates Presence in the PCCS 100-GHz Band (XFLAG_PCCS_100) meta.code short nullable hkpgcc_flag Boolean Flag [01] Indicates Presence in the Herschel HKP-GCC (XFLAG_HKP_GCC) meta.code short nullable snr_857_ghz Signal-to-Noise Ratio of the Cold Residual Detection at 857 GHz (SNR_857) stat.snr double nullable flux_3000_ghz_error 1-Sigma Uncertainty on the Flux Density of the Clump at 3 THz mJy stat.error;phot.flux.density;em.IR.60-100um double nullable mass_upper_2sig Upper 95% Confidence Limit of the Mass Estimate (MASS_UP2) Solar_Mass phys.mass;stat.max double nullable spectral_index_lower Lower 68% Confidence Limit of the Emissivity Spectral Index Beta of the Clump spect.index;stat.min double nullable major_axis FWHM Along the Major Axis of the Elliptical Gaussian (GAU_MAJOR_AXIS) arcmin phys.angSize.smajAxis double nullable temperature_alt Temperature of the Clump with Beta=2 (TEMP_BETA2_CLUMP) K phys.temperature double nullable density_error 1-Sigma Uncertainty on the Mean Density Estimate of the Clump (DENSITY_SIG) cm^-3 stat.error;phys.density double nullable size_lower Lower 68% Confidence Limit of the Physical Size Estimate (SIZE_LOW1) pc phys.size.diameter;stat.min double nullable distance_alt3_error 1-Sigma Uncertainty in Distance Estimate [3] Using SDSS DR9 Optical Extinction kpc stat.error;pos.distance double nullable l_bol Luminosity of the Clump (Luminosity) erg/s phys.luminosity double nullable density_upper_3sig Upper 99% Confidence Limit of the Mean Density Estimate (DENSITY_UP3) cm^-3 phys.density;stat.max double nullable pccs_353_ghz_flag Boolean Flag [01] Indicates Presence in the PCCS 353-GHz Band (XFLAG_PCCS_353) meta.code short nullable ecc_flag Boolean Flag [01] Indicates Presence in the ECC (XFLAG_ECC) meta.code short nullable temperature_alt_lower Lower 68% Confidence Limit of the Clump Temperature with Beta=2 K phys.temperature;stat.min double nullable flux_857_ghz_error 1-Sigma Uncertainty on the Flux Density of the Clump at 857 GHz mJy stat.error;phot.flux.density;em.mm.400-750GHz double nullable pccs_217_ghz_flag Boolean Flag [01] Indicates Presence in the PCCS 217-GHz Band (XFLAG_PCCS_217) meta.code short nullable flux_flag Flag [1-3] Indicates Category of Flux Density Reliability (Flux_QUALITY) meta.code;phot.flux short nullable density_upper Upper 68% Confidence Limit of the Mean Density Estimate (DENSITY_UP1) cm^-3 phys.density;stat.max double nullable pccs_545_ghz_flag Boolean Flag [01] Indicates Presence in the PCCS 545-GHz Band (XFLAG_PCCS_545) meta.code short nullable temp_bkg Temperature of the Warm Background with Beta As a Free Parameter (TEMP_WBKG) K phys.temperature double nullable smc_flag Boolean Flag [01] Indicates Part of the SMC (XFLAG_SMC) meta.code short nullable pccs_70_ghz_flag Boolean Flag [01] Indicates Presence in the PCCS 70-GHz Band (XFLAG_PCCS_70) meta.code short nullable phz_flag Boolean Flag [01] Indicates Presence in the PCCS HZ (XFLAG_PHZ) meta.code short nullable mass_lower_3sig Lower 99% Confidence Limit of the Mass Estimate (MASS_LOW3) Solar_Mass phys.mass;stat.min double nullable minor_axis_error 1-Sigma Uncertainty on FWHM Along the Minor Axis (GAU_MINOR_AXIS_SIG) arcmin stat.error;phys.angSize.sminAxis double nullable flux_3000_ghz_bkg_error 1-Sigma Uncertainty on the Flux Density of Warm Background at 3THz mJy stat.error;phot.flux.density;em.IR.60-100um double nullable distance_alt4 Distance Estimate [4] Using Near-Infrared Extinction Towards IRDCs kpc pos.distance double nullable minor_axis FWHM Along the Minor Axis of the Elliptical Gaussian (GAU_MINOR_AXIS) arcmin phys.angSize.sminAxis double nullable nh2_lower_2sig Lower 95% Confidence Limit of the Column Density (NH2_LOW2) cm^-2 stat.error;phys.columnDensity double nullable size_upper_3sig Upper 99% Confidence Limit of the Physical Size Estimate (SIZE_UP3) pc phys.size.diameter;stat.max double nullable temp_bkg_lower Lower 68% Confidence Limit of the Warm Background Temperature with Beta Free K phys.temperature;stat.min double nullable flux_857_ghz_bkg_error 1-Sigma Uncertainty on the Flux Density of the Warm Background at 857 GHz mJy stat.error;phot.flux.density;em.mm.400-750GHz double nullable blend_flag Boolean Flag [01] Indicates Blending Issue with Flux Density Estimate meta.code short nullable "__x_ra_dec" System unit vector column double nullable "__y_ra_dec" System unit vector column double nullable "__z_ra_dec" System unit vector column double nullable "__row" System index column char nullable