- ID:
- ivo://CDS.VizieR/J/ApJS/228/22
- Title:
- Korean VLBI Network Calibrator Survey (KVNCS). I.
- Short Name:
- J/ApJS/228/22
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present the catalog of the KVN Calibrator Survey (KVNCS). This first part of the KVNCS is a single-dish radio survey simultaneously conducted at 22 (K band) and 43GHz (Q band) using the Korean VLBI Network (KVN) from 2009 to 2011. A total of 2045 sources are selected from the VLBA Calibrator Survey with an extrapolated flux density limit of 100mJy at the K band. The KVNCS contains 1533 sources in the K band with a flux density limit of 70mJy and 553 sources in the Q band with a flux density limit of 120mJy; it covers the whole sky down to -32.5{deg} in decl. We detected 513 sources simultaneously in the K and Q bands; ~76% of them are flat-spectrum sources (-0.5<={alpha}<=0.5). From the flux-flux relationship, we anticipated that most of the radiation of many of the sources comes from the compact components. The sources listed in the KVNCS therefore are strong candidates for high-frequency VLBI calibrators.
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Search Results
- ID:
- ivo://CDS.VizieR/J/MNRAS/459/1687
- Title:
- Ks light curve of 299 SMC new Cepheids
- Short Name:
- J/MNRAS/459/1687
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present K_s_-band light curves for 299 Cepheids in the Small Magellanic Cloud (SMC) of which 288 are new discoveries that we have identified using multi-epoch near-infrared photometry obtained by the VISTA survey of the Magellanic Clouds system (VMC). The new Cepheids have periods in the range from 0.34 to 9.1d and cover the magnitude interval 12.9<=<K_s_><=17.6mag. Our method was developed using variable stars previously identified by the optical microlensing survey OGLE. We focus on searching new Cepheids in external regions of the SMC for which complete VMC K_s_-band observations are available and no comprehensive identification of different types of variable stars from other surveys exists yet.
- ID:
- ivo://CDS.VizieR/J/other/PNAOJ/5.75
- Title:
- KUG survey, second series. I
- Short Name:
- J/other/PNAOJ/5.
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- The catalogue list of ultraviolet(UV)-excess galaxies (KUG) which have been detected on two-color Kiso Schmidt plates is presented for the 10 Schmidt fields. Catalogued are 341 objects, down to the photographic magnitude 17 in the sky area of some 300 square degrees. (Errata listed in the paper II of this series, 2000PNAOJ...6....1M, are corrected.)
- ID:
- ivo://CDS.VizieR/J/other/PNAOJ/6.1
- Title:
- KUG survey, second series. II
- Short Name:
- J/other/PNAOJ/6.
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- The catalogue list of ultraviolet(UV)-excess galaxies (KUG) which have been detected on two-color Kiso Schmidt plates is presented for the 10 Schmidt fields. Catalogued are 644 objects, down to the photographic magnitude 17 in the sky area of some 300 square degrees.
- ID:
- ivo://CDS.VizieR/J/other/PNAOJ/6.107
- Title:
- KUG survey, second series. III
- Short Name:
- J/other/PNAOJ/6.
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- The catalogue list and the identification chart of ultraviolet (UV)-excess galaxies which have been detected on two-color Kiso Schmidt plates are presented for 10 Schmidt fields. Catalogued are 710 objects, down to the photographic magnitude ~17.5 in the sky area of some 300 square degrees. The total number of KUGs newly detected in the second survey reaches 1642.
- ID:
- ivo://CDS.VizieR/J/other/PNAOJ/7.37
- Title:
- KUG survey, second series. IV.
- Short Name:
- J/other/PNAOJ/7.
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- The catalogue list and the identification chart of ultraviolet (UV)-excess galaxies which have been detected on two-color Kiso Schmidt plates are presented for 10 Schmidt fields. Catalogued are 189 objects, down to the photographic magnitude ~18.0 in the sky area of some 300 square degrees. The total number of KUGs newly detected in the second survey reaches 1829.
- ID:
- ivo://CDS.VizieR/J/ApJ/707/1201
- Title:
- LABOCA ECDFS Submillimeter Survey (LESS)
- Short Name:
- J/ApJ/707/1201
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present a sensitive 870um survey of the Extended Chandra Deep Field South (ECDFS) combining 310hr of observing time with the Large Apex BOlometer Camera (LABOCA) on the APEX telescope. The LABOCA ECDFS Submillimetre Survey (LESS) covers the full 30'x30' field size of the ECDFS and has a uniform noise level of {sigma}_870um_~1.2mJy/beam. LESS is thus the largest contiguous deep submillimeter survey undertaken to date. The noise properties of our map show clear evidence that we are beginning to be affected by confusion noise. We present a catalog of 126 submillimeter galaxies (SMGs) detected with a significance level above 3.7{sigma}, at which level we expect five false detections given our map area of 1260arcmin^2^.
- ID:
- ivo://CDS.VizieR/J/ApJS/234/5
- Title:
- LaCoSSPAr in the Southern Galactic Cap. I.
- Short Name:
- J/ApJS/234/5
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present a spectroscopic redshift catalog from the LAMOST Complete Spectroscopic Survey of Pointing Area (LaCoSSPAr) in the Southern Galactic Cap (SGC), which is designed to observe all sources (Galactic and extragalactic) by using repeating observations with a limiting magnitude of r=18.1mag in two 20deg^2^ fields. The project is mainly focusing on the completeness of LAMOST ExtraGAlactic Surveys (LEGAS) in the SGC, the deficiencies of source selection methods, and the basic performance parameters of the LAMOST telescope. In both fields, more than 95% of galaxies have been observed. A post-processing has been applied to the LAMOST 1D spectrum to remove the majority of remaining sky background residuals. More than 10000 spectra have been visually inspected to measure the redshift by using combinations of different emission/absorption features with an uncertainty of {sigma}_z_/(1+z)<0.001. In total, 1528 redshifts (623 absorption and 905 emission line galaxies) in Field A and 1570 redshifts (569 absorption and 1001 emission line galaxies) in Field B have been measured. The results show that it is possible to derive redshift from low S/N galaxies with our post-processing and visual inspection. Our analysis also indicates that up to one-fourth of the input targets for a typical extragalactic spectroscopic survey might be unreliable. The multi-wavelength data analysis shows that the majority of mid-infrared-detected absorption (91.3%) and emission line galaxies (93.3%) can be well separated by an empirical criterion of W2-W3=2.4. Meanwhile, a fainter sequence paralleled to the main population of galaxies has been witnessed both in Mr/W2-W3 and M*/W2-W3 diagrams, which could be the population of luminous dwarf galaxies but contaminated by the edge-on/highly inclined galaxies (~30%).
- ID:
- ivo://CDS.VizieR/J/ApJ/753/95
- Title:
- LAE galaxies in the ECDF-S at z~2.1 and z~3.1
- Short Name:
- J/ApJ/753/95
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present a rest-frame ultraviolet morphological analysis of 108 z~2.1 Ly{alpha} emitters (LAEs) in the Extended Chandra Deep Field South and compare it to a similar sample of 171 LAEs at z~3.1. Using Hubble Space Telescope images from the Galaxy Evolution from Morphology and SEDs survey, Great Observatories Origins Deep Survey, and Hubble Ultradeep Field, we measure size and photometric component distributions, where photometric components are defined as distinct clumps of UV-continuum emission. At both redshifts, >80% of LAEs have observed half-light radii <2kpc, but the median half-light radius rises from 0.95+/-0.04kpc at z=3.1 to 1.41+/-0.14kpc at z=2.1. A similar evolution is seen in the sizes of individual rest-UV components, but there is no evidence for evolution in the number of multi-component systems. In the z=2.1 sample, we see clear correlations between the size of an LAE and other physical properties derived from its spectral energy distribution (SED). LAEs are found to be larger for galaxies with higher stellar mass, star formation rate, and dust obscuration, but there is no evidence for a trend between equivalent width and half-light radius at either redshift. The presence of these correlations suggests that a wide range of objects are being selected by LAE surveys at z~2, including a significant fraction of objects for which a massive and moderately extended population of old stars underlies the young starburst giving rise to the Ly{alpha} emission.
- ID:
- ivo://CDS.VizieR/J/ApJ/706/762
- Title:
- LAEs at z~4.5 in the LALA Cetus field
- Short Name:
- J/ApJ/706/762
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present a large sample of Ly{alpha}-emitting galaxies (LAEs) spectroscopically confirmed at redshift z~4.5, based on Inamori-Magellan Areal Camera and Spectrograph spectroscopic observations of candidate z~4.5 Ly{alpha}-emitting galaxies in the large area Lyman alpha (LALA) narrowband imaging survey Cetus field. We identify 110 of them as z~4.5 Ly{alpha} emitters based on single-line detections with no continuum emission blueward of the line. Six foreground galaxies are identified, either based on multiple lines or blueward continuum emission. The Ly{alpha} confirmation rate varies from <50% to 76% for candidates selected in different narrowband filters at slightly different redshifts. The sample includes many objects with equivalent widths (EWs)>~200{AA}. These large EW candidates are spectroscopically confirmed at the same rate as candidates with more modest EWs.
