- ID:
- ivo://CDS.VizieR/III/202
- Title:
- Spectrophotometric Catalogue of Stars
- Short Name:
- III/202
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- This catalogue contains the absolute energy distribution of the 1147 stars of different spectral type and luminosity classes in the range of 3225-7575A with the step 50A. The observations were made in the Fessenkov Astrophysical Institute (AlmaAta,Kazakstan, height 1450m) during 1968-1986 using spectrum scanner with photo-multiplier tube attached to the 50cm Cassegrain telescope. Standards are Beta Ari, Gamma Ori, Beta Tau, Alpha Leo, Eta UMa, Alpha Lyr, Alpha Aql and Alpha Peg, based on the absolute energy distribution of Vega as given Hayes(1985). The average accuracy of the catalogue data is 3.5%.
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- ID:
- ivo://CDS.VizieR/III/209
- Title:
- Spectrophotometric Standards
- Short Name:
- III/209
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- The catalog contains energy distribution data of 82 stars of 7-8mag belonging to spectral types A0-G2. Spectral energy distribution is presented in the range 3400-7500{AA} with 50{AA} step. The observations were made in the period 1991-1996 by means of the spectrophotometer working at the regime of the photon counting. Scanner was installed at the 60-cm Zeiss reflector of the Sternberg Institute Crimean Station. Eight early type stars were used as spectrophotometic standards: {beta} Ari, {gamma} Ori, {beta} Tau, {alpha} Leo, {eta} UMa, {alpha} Lyr, {alpha} Aql and {alpha} Peg. The accuracy of the monochromatic fluxes is about 2% in the ultraviolet, 1% in the visual range an 1.5-2% for {lambda}>7000{AA}. The energy distribution data are expressed in erg/(cm^2^.s.cm)*10^-6^.
- ID:
- ivo://CDS.VizieR/J/AZh/78/1135
- Title:
- Spectrophotometric standards near DE=+40{deg}
- Short Name:
- J/AZh/78/1135
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- The second stage to compile a list of regional intermediate-brightness spectrophotometric standards has been completed. It includes the spectral energy distribution for 24 stars with magnitudes 7.0-8.5 near +40{deg} declination. The range 3100-7600{AA} was studied with a spectral resolution of 50{AA}. All the stars are referenced to a single standard the circumpolar star HD 221525. The energy distributions were used to compute color indices in the UBV, WBVR, and UPXYZVS systems,as well as in the system (BT,VT) of the TYCHO catalog.
- ID:
- ivo://CDS.VizieR/J/AZh/76/604
- Title:
- Spectrophotometry of S and carbon stars
- Short Name:
- J/AZh/76/604
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- The absolute energy distributions in the visual spectra (3200-7600{AA}) of 13 N carbon stars and three S stars have been investigated. The spectral resolution of the data is 50 A and the relative rms error is 2-5%. The data supplement and extend the Almaty and other spectrophotometric catalogs that are lacking in these types of objects.
- ID:
- ivo://CDS.VizieR/J/PAZh/32/672
- Title:
- Spectrophotometry of 77 variable stars
- Short Name:
- J/PAZh/32/672
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- The results of visual and near-infrared spectrophotometric observations for 77 variable stars obtained during 1971-1991 in Chile, Armenia and Bolivia. The quasi-monochromatic extra-atmospheric fluxes from the stars are given in absolute energy units (W/m^2^/m) at all wavelengths of the spectral range at 2.5 nm intervals.
- ID:
- ivo://CDS.VizieR/J/A+A/468/1009
- Title:
- Star formation in Perseus. II.
- Short Name:
- J/A+A/468/1009
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- Hatchell et al. (2005, Cat. <J/A+A/440/151>, Paper I) published a submillimetre continuum map of the Perseus molecular cloud, detecting the starless and protostellar cores within it. The aim is to determine the evolutionary stage of each submm core in Perseus, and investigate the lifetimes of these phases.
- ID:
- ivo://CDS.VizieR/J/A+A/562/A15
- Title:
- Star-forming galaxies in AKARI Deep Field-South
- Short Name:
- J/A+A/562/A15
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- The main aim of this work is the characterization of physical properties of galaxies detected in the far infrared (FIR) in the AKARI Deep Field-South (ADF-S) survey. Starting from a catalog of the brightest 1000 ADF-S sources in the WIDE-S (90um) AKARI band, we constructed a subsample of galaxies with spectral coverage from the ultraviolet to the far-infrared. Then, we analyzed the multiwavelength properties of this 90um-selected sample of galaxies. For galaxies without known spectroscopic redshifts we computed photometric redshifts using codes Le PHARE and CIGALE, tested these photometric redshifts using spectroscopic redshifts, and compared the performances of both codes. To test the reliability of parameters obtained by fitting Spectral Energy Distributions, a mock catalogue has been generated. We built a large multiwavelength catalog of more than 500 ADF-S galaxies. We successfully fitted Spectral Energy Distributions of 186 galaxies with {chi}^2^<4, and analyzed the output parameters of the fits. We conclude that our sample consists mostly of nearby actively star-forming galaxies, and all our galaxies have a relatively high metallicity. We estimated photometric redshifts for 113 galaxies from the whole ADF-S sample. Comparing the performance of Le PHARE and CIGALE, we found that CIGALE gives more reliable redshift estimates for our galaxies, which implies that including the IR photometry allows for substantial improvement of photometric redshift estimation.
- ID:
- ivo://CDS.VizieR/III/208
- Title:
- Sternberg Spectrophotometric Catalog
- Short Name:
- III/208
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- This catalogue contains the energy distribution data of 866 stars of different spectral type and luminosity classes in the range 3225-7625{AA} with the step 50{AA}. The observations were made at the Crimean Station of the Sternberg Astronomical Institute during 1970-1984 using spectrophotometer installed at the 48-cm and 60-cm Zeiss reflectors. Standards are Beta Ari, Gamma Ori, Beta Tau, Alfa Leo, Eta UMa, Alfa Lyr, Alfa Aql and Alfa Peg. Energy distribution data in the spectra of standard Stars are based on the calibration of Vega published by Hayes (1985IAUS..111..225H). The average accuracy of the catalogue data is 3.2%. Monochromatic fluxes are in erg/(cm^2^.s.cm*10^-6^). Zero flux is expressed as E-12.
- ID:
- ivo://CDS.VizieR/J/ApJ/853/172
- Title:
- "Super-deblended" dust emission in galaxies. I.
- Short Name:
- J/ApJ/853/172
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present a new technique to measure multi-wavelength "super-deblended" photometry from highly confused images, which we apply to Herschel and ground-based far-infrared (FIR) and (sub-)millimeter (mm) data in the northern field of the Great Observatories Origins Deep Survey (GOODS-N). There are two key novelties. First, starting with a large database of deep Spitzer 24{mu}m and VLA 20cm detections that are used to define prior positions for fitting the FIR/submm data, we perform an active selection of useful priors independently at each frequency band, moving from less to more confused bands. Exploiting knowledge of redshift and all available photometry, we identify hopelessly faint priors that we remove from the fitting pool. This approach significantly reduces blending degeneracies and allows reliable photometry to be obtained for galaxies in FIR+mm bands. Second, we obtain well-behaved, nearly Gaussian flux density uncertainties, individually tailored to all fitted priors for each band. This is done by exploiting extensive simulations that allow us to calibrate the conversion of formal fitting uncertainties to realistic uncertainties, depending on directly measurable quantities. We achieve deeper detection limits with high fidelity measurements and uncertainties at FIR+mm bands. As an illustration of the utility of these measurements, we identify 70 galaxies with z>=3 and reliable FIR+mm detections. We present new constraints on the cosmic star formation rate density at 3<z<6, finding a significant contribution from z>=3 dusty galaxies that are missed by optical-to-near-infrared color selection. Photometric measurements for 3306 priors, including more than 1000 FIR+mm detections, are released publicly with our catalog.
- ID:
- ivo://CDS.VizieR/J/A+A/488/867
- Title:
- Synchrotron peak frequency of 135 AGN
- Short Name:
- J/A+A/488/867
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- The blazar sequence is a scenario in which the bolometric luminosity of the blazar governs the appearance of its spectral energy distribution. The most prominent result is the significant negative correlation between the synchrotron peak frequencies and the synchrotron peak luminosities of the blazar population. Observational studies of the blazar sequence have, in general, neglected the effect of Doppler boosting. We study the dependence of both the synchrotron peak frequency and luminosity with Doppler-corrected quantities. We determine the spectral energy distributions of 135 radio-bright AGN and find the best-fit parabolic function for the distribution to quantify their synchrotron emission. The corresponding measurements of synchrotron peak luminosities and frequencies are Doppler-corrected with a new set of Doppler factors calculated from variability data. The relevant correlations for the blazar sequence are determined for these intrinsic quantities.
