- ID:
- ivo://irsa.ipac/IRAS/Catalog/PSC
- Title:
- IRAS Point Source Catalog
- Short Name:
- IRAS-PSC
- Date:
- 01 Oct 2018 20:27:21
- Publisher:
- NASA/IPAC Infrared Science Archive
- Description:
- This is a catalog of 245,889 well-confirmed point sources, i.e., sources with angular extents less than approximately 0.5', 0.5', 1.0', and 2.0' in the in-scan direction at 12, 25, 60, and 100 µm, respectively. Positions, flux densities, uncertainties, associations with known astronomical objects and various cautionary flags are given for each object. While two other complementary data sets - the Working Survey Database and the Point Source Reject Catalog - give information about point-like sources, the information available in the Point Source Catalog should satisfy almost all users. Away from confused regions of the sky, the survey is complete to about 0.4, 0.5, 0.6, and 1.0 Jy at 12, 25, 60, and 100 µm (cf. Faint Source Catalog). Typical position uncertainties are about 2" to 6" in-scan and about 8" to 16" cross-scan. The processing steps applied to detect and confirm point sources, and the positional and photometric error analyses are described in the Explanatory Supplement. The sources appear in order of increasing (1950.0) right ascension.
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- ID:
- ivo://CDS.VizieR/II/274
- Title:
- IRAS Point Source Reject Catalog
- Short Name:
- II/274
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- This is a catalog of 372,774 potential infrared point sources that failed one or more of the confirmation and confusion criteria and were not, thus, included in the IRAS Point Source Catalog (Cat. II/125). These REJECTED sources include spurious objects (e.g., processing failures, space debris, asteroids and comets) and celestial sources that, due to incompleteness at faint levels or to variability, failed to achieve the minimum criterion of two hours-confirmed sightings. In regions of high source density the catalog includes sources rejected by the more severe criteria for reliability applied there. For detailed description about the IRAS mission and catalogues, see also http://lambda.gsfc.nasa.gov/product/iras/docs/exp.sup/toc.html
- ID:
- ivo://CDS.VizieR/II/338
- Title:
- IRAS PSC/FSC Combined Catalogue
- Short Name:
- II/338
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- Optical identifications of a few thousands of IRAS sources showed that IRAS Point Source and IRAS Faint Source catalogues (PSC and FSC, respectively) contain many quasars and active galactic nuclei, late-type stars, planetary nebulae, variables, etc. To increase the efficiency of using IRAS PSC and FSC, which contain a lot of common sources, one needs a joint catalogue of all IRAS point sources with improved data based on both catalogues. However, cross-correlation of the catalogues is not so easy, as the association of many sources is relative, and not always it is obvious, whose source from one catalogue corresponds to the other one in the second catalogue. This problem exists in case of using standard cross-correlation tools. Therefore, we have created a tool for cross-matching astronomical catalogues and we have applied it to IRAS PSC and FSC. Using this tool we have carried out identifications with a search radius corresponding to 3-{sigma} of errors for each source individually rather than a standard radius for all sources. As a result, we obtained 73,770 associations. In addition, we have made cross-correlations with AKARI-IRC, AKARI-FIS and WISE catalogues. We created a catalogue of 345,163 IRAS sources with high positional accuracy and with 17 photometric measurements from 1.25 to 160 ?m range, providing a detailed catalogue for IRAS point sources.
- ID:
- ivo://CDS.VizieR/II/126
- Title:
- IRAS Serendipitous Survey Catalog
- Short Name:
- II/126
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- This is a catalog of 12, 25, 60 and 100 micron photometric observations of 43,866 point-like sources detected fortuitiously in the Infrared Astronomical Satellite Pointed Observation program. The main objective was to take advantage of the longer-than-nominal integration time per source to extend the detection threshold relative to that of the Point Source Catalog (PSC); about three-fourths of the Serendipitous Survey Catalog (SSC) sources do not appear in the PSC. From 1813 Pointed Observation fields, the effective sky coverage is 1108 square degrees. Relative to the PSC, the SSC is characterized by: enhanced sensitivity (by a factor of about 4) in all four wavelength bands; excellent reliability in uncrowded fields; uneven sky coverage and completeness; reduced positional accuracy; improved photometric accuracy; much greater depth in crowded fields at the expense of reliability and accuracy. The SSC data processing, the catalog format, and an analysis are given in the Explanatory Supplement to the IRAS Serendipitous Survey Catalog.
- ID:
- ivo://CDS.VizieR/J/ApJ/694/546
- Title:
- IR dust bubbles. II. YSOs model parameters
- Short Name:
- J/ApJ/694/546
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present an analysis of late-O/early-B-powered, parsec-sized bubbles and associated star formation using Two Micron All Sky Survey, GLIMPSE, MIPSGAL, and MAGPIS surveys. Three bubbles were selected from the Churchwell et al. catalog (2007, Cat. J/ApJ/670/428). We confirm that the structure identified in Watson et al. (2008ApJ...681.1341W) holds in less energetic bubbles, i.e., a photodissociated region, identified by 8um emission due to polycyclic aromatic hydrocarbons surrounding hot dust, identified by 24um emission and ionized gas, and identified by 20cm continuum. We estimate the dynamical age of two bubbles by comparing bubble sizes to numerical models of Hosokawa and Inutsuka. We also identify and analyze candidate young stellar objects using spectral energy distribution (SED) fitting and identify sites of possible triggered star formation. Lastly, we identify likely ionizing sources for two sources based on SED fitting.
- ID:
- ivo://CDS.VizieR/J/ApJ/723/895
- Title:
- IR luminosities and aromatic features of 5MUSES
- Short Name:
- J/ApJ/723/895
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We study a 24um selected sample of 330 galaxies observed with the infrared spectrograph for the 5mJy Unbiased Spitzer Extragalactic Survey (5MUSES). We estimate accurate total infrared luminosities by combining mid-IR spectroscopy and mid-to-far infrared photometry, and by utilizing new empirical spectral templates from Spitzer data. The infrared luminosities of this sample range mostly from 10^9^L_{sun}_ to 10^13.5^L_{sun}_, with 83% in the range 10^10^L_{sun}_<L_IR_<10^12^L_{sun}_. The redshifts range from 0.008 to 4.27, with a median of 0.144. The equivalent widths of the 6.2um aromatic feature have a bimodal distribution, probably related to selection effects. We use the 6.2um polycyclic aromatic hydrocarbon equivalent width (PAH EW) to classify our objects as starburst (SB)-dominated (44%), SB-AGN composite (22%), and active galactic nucleus (AGN)-dominated (34%). The high EW objects (SB-dominated) tend to have steeper mid-IR to far-IR spectral slopes and lower LIR and redshifts.
- ID:
- ivo://CDS.VizieR/J/ApJ/754/45
- Title:
- IR properties of Swift/BAT X-ray AGNs
- Short Name:
- J/ApJ/754/45
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We investigate the mid- (MIR) to far-infrared (FIR) properties of a nearly complete sample of local active galactic nuclei (AGNs) detected in the Swift/Burst Alert Telescope (BAT) all-sky hard X-ray (14-195 keV) survey, based on the cross correlation with the AKARI infrared survey catalogs complemented by those with Infrared Astronomical Satellite and Wide-field Infrared Survey Explorer. Out of 135 non-blazer AGNs in the Swift/BAT nine-month catalog, we obtain the MIR photometric data for 128 sources either in the 9, 12, 18, 22, and/or 25 {mu}m band. We find good correlation between their hard X-ray and MIR luminosities over three orders of magnitude (42 < log {lambda}L_{lambda}_(9, 18 {mu}m) < 45), which is tighter than that with the FIR luminosities at 90 {mu}m. This suggests that thermal emission from hot dusts irradiated by the AGN emission dominate the MIR fluxes. Both X-ray unabsorbed and absorbed AGNs follow the same correlation, implying isotropic infrared emission, as expected in clumpy dust tori rather than homogeneous ones. We find excess signals around 9 {mu}m in the averaged infrared spectral energy distribution from heavy obscured "new type" AGNs with small scattering fractions in the X-ray spectra. This could be attributed to the polycyclic aromatic hydrocarbon emission feature, suggesting that their host galaxies have strong starburst activities.
- ID:
- ivo://CDS.VizieR/J/ApJ/642/673
- Title:
- IR-selected obscured AGN candidates
- Short Name:
- J/ApJ/642/673
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- Using the large multiwavelength data set in the Chandra/SWIRE Survey (0.6deg^2^ in the Lockman Hole), we show evidence for the existence of highly obscured (Compton-thick) AGNs, estimate a lower limit to their surface density, and characterize their multiwavelength properties. Two independent selection methods based on the X-ray and infrared spectral properties are presented. The two selected samples contain (1) five X-ray sources with hard X-ray spectra and column densities >~10^24^cm^-2^ and (2) 120 infrared sources with red and AGN-dominated infrared SEDs. We estimate a surface density of at least 25 Compton-thick AGNs deg^2^ detected in the infrared in the Chandra/SWIRE field, of which 40% show distinct AGN signatures in their optical/near-infrared SEDs, the remaining being dominated by the host galaxy emission. Only ~33% of all Compton-thick AGNs are detected in the X-rays at our depth [F(0.3-8keV)>10^-15^ergs/cm^2^/s]. We report the discovery of two sources in our sample of Compton-thick AGNs, SWIRE J104409.95+585224.8 (z=2.54) and SWIRE J104406.30+583954.1 (z=2.43), which are the most luminous Compton-thick AGNs at high z currently known. The properties of these two sources are discussed in detail with an analysis of their spectra, SEDs, luminosities, and black hole masses.
- ID:
- ivo://CDS.VizieR/II/288
- Title:
- IRSF Magellanic Clouds Point Source Catalog
- Short Name:
- II/288
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present a near-infrared (JHKs) photometric catalog, including 14811185 point sources for a 40deg^2^ area of the Large Magellanic Cloud, 2769682 sources for an 11deg^2^ area of the Small Magellanic Cloud, and 434145 sources for a 4deg^2^ area of the Magellanic Bridge. The 10sigma limiting magnitudes are 18.8, 17.8, and 16.6mag at J, H, and Ks, respectively. The photometric and astrometric accuracies for bright sources are 0.03-0.04mag and 0.1arcsec, respectively. Based on the catalog, we also present (1) spatial distributions, (2) luminosity functions, (3) color-color diagrams, and (4) color-magnitude diagrams for point sources toward the Magellanic Clouds.
- ID:
- ivo://CDS.VizieR/J/MNRAS/481/4206
- Title:
- IRSF survey of variable stars in the SMC
- Short Name:
- J/MNRAS/481/4206
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- A very long-term near-infrared variable star survey towards the Large and Small Magellanic Clouds (LMC and SMC) was carried out using the 1.4m InfraRed Survey Facility at the South African Astronomical Observatory. This project was initiated in 2000 December in the LMC, and in 2001 July in the SMC. Since then an area of 3deg^2^ along the bar in the LMC and an area of 1deg^2^ in the central part of the SMC have been repeatedly observed. This survey is ongoing, but results obtained with data taken until 2017 December are reported in this paper. Over more than 15yr we have observed the two survey areas more than one hundred times. This is the first survey that provides near-infrared time-series data with such a long time baseline and on such a large scale. This paper describes the observations in the SMC and publishes a point source photometric catalogue, a variable source catalogue, and time-series data.
