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1131. Mapping the diffuse UV sky with GALEX
ID:
ivo://CDS.VizieR/J/ApJ/724/1389
Title:
Mapping the diffuse UV sky with GALEX
Short Name:
J/ApJ/724/1389
Date:
21 Oct 2021
Publisher:
CDS
Description:
We present a map of the diffuse ultraviolet cosmic background in two wavelength bands (FUV: 1530{AA} and NUV: 2310{AA}) over almost 75% of the sky using archival data from the Galaxy Evolution Explorer (GALEX) mission. Most of the diffuse flux is due to dust-scattered starlight and follows a cosecant law with slopes of 545 photons/cm^2^/s/sr/{AA} and 433 photons/cm^2^/s/sr/{AA} in the FUV and NUV bands, respectively. There is a strong correlation with the 100um Infrared Astronomy Satellite (IRAS) flux with an average UV/IR ratio of 300 photons/cm^2^/s/sr/{AA}/(MJy/sr) in the FUV band and that of 220 photons/cm^2^/s/sr/{AA}/(MJy/sr) in the NUV band but with significant variations over the sky. In addition to the large-scale distribution of the diffuse light, we note a number of individual features including bright spots around the hot stars Spica and Achernar.
1132. Mapping the stellar age of the Milky Way
ID:
ivo://CDS.VizieR/J/A+A/629/A1
Title:
Mapping the stellar age of the Milky Way
Short Name:
J/A+A/629/A1
Date:
21 Oct 2021
Publisher:
CDS
Description:
The bulge represents the best compromise between old and massive Galactic component, and as such its study is a valuable opportunity to understand how the bulk of the Milky Way formed and evolved. In addition, being the only bulge in which we can individually resolve stars in all evolutionary sequences, the properties of its stellar content provide crucial insights on the formation of bulges at large. We aim at providing a detailed and comprehensive census of the Milky Way bulge stellar populations by producing deep and accurate photometric catalogs of the inner ~300 sqdeg of the Galaxy. We perform DAOPHOT/ALLFRAME PSF-fitting photometry of multi-epochs J and Ks images provided by the VVV survey to obtain deep photometric catalogs. Artificial star experiments have been conducted on all images to properly assess the completeness and the accuracy of the photometric measurements. We present a photometric database containing nearly 600 million stars across the bulge area surveyed by the VVV. Through the comparison of derived color-magnitude diagrams of selected fields representative of different levels of extinction and crowding, we show the quality, completeness and depth of the new catalogs. With the exception of the fields located along the plane, this new photometry samples stars down to ~1-2mag below the MS-TO with unprecedented accuracy. To demonstrate the tremendous potential inherent to this new dataset, we give few examples of possible applications such as: i) star counts studies through the dataset completeness map; ii) surface brightness map; and iii) cross-correlation with Gaia DR2. The database presented here represents an invaluable collection for the whole community, and we encourage its exploitation. The photometric catalogs including completeness information are publicly available through the ESO Science Archive.
1133. MASH Catalogues of Planetary Nebulae
ID:
ivo://CDS.VizieR/V/127A
Title:
MASH Catalogues of Planetary Nebulae
Short Name:
V/127A
Date:
21 Oct 2021
Publisher:
CDS
Description:
The Macquarie/AAO/Strasbourg H{alpha} Planetary Nebula Catalogue (MASH) contains 903 new true, likely and possible Galactic Planetary Nebulae (PNe) discovered from the AAO/UKST H{alpha} survey of the southern Galactic plane. The combination of depth, resolution, uniformity, and areal coverage of the H {alpha}survey has opened up an hitherto unexplored region of parameter space permitting the detection of this significant new PN sample. This catalogue includes also the spectra of the PNe as FITS files (in the "sp" subdirectory), and a gallery of images created as a combination of the H{alpha} and short red images of the survey. The second part, MASH-II (table mash2.dat) consists of over 300 true, likely and possible new Galactic PNe found after re-examination of the entire AAO/UKST H{alpha} survey of the Southern Galactic Plane in digital form. Over 240 of these new candidates were confirmed as bona fide PNe on the basis of spectroscopic observations. The spectra of this supplement will be available in the future.
1134. MASIV survey. II. First four epochs
ID:
ivo://CDS.VizieR/J/ApJ/689/108
Title:
MASIV survey. II. First four epochs
Short Name:
J/ApJ/689/108
Date:
21 Oct 2021
Publisher:
CDS
Description:
We report on the variability of 443 flat-spectrum, compact radio sources monitored using the VLA for 3 days in four epochs at ~4 month intervals at 5GHz as part of the Micro-Arcsecond Scintillation-Induced Variability (MASIV) survey. Over half of these sources exhibited 2%-10% rms variations on timescales over 2 days. We analyzed the variations by two independent methods and find that the rms variability amplitudes of the sources correlate with the emission measure in the ionized interstellar medium along their respective lines of sight. We thus link the variations with interstellar scintillation of components of these sources, with some (unknown) fraction of the total flux density contained within a compact region of angular diameter in the range 10-50{mu}as. We also find that the variations decrease for high mean flux density sources and, most importantly, for high-redshift sources. The decrease in variability is probably due either to an increase in the apparent diameter of the source or to a decrease in the flux density of the compact fraction beyond z~2.
1135. Massachusetts-Stony Brook Galactic Plane CO Survey
ID:
ivo://CDS.VizieR/VII/114
Title:
Massachusetts-Stony Brook Galactic Plane CO Survey
Short Name:
VII/114
Date:
21 Oct 2021
Publisher:
CDS
Description:
The Massachusetts-Stony Brook Galactic Plane CO Survey data consists of 40551 12CO(J=1-0) spectra covering Galactic longitudes 8-90 deg and latitudes -1.05 to +1 deg. The spectra were obtained with the 14m antenna at the Five College Radio Astronomy Observatory. Each spectrum consists of 350 channels with 1km/s width; up to 300 channels per spectrum are defined. The extra channels allow for shifts of the central velocity with longitude to keep the Galactic emission within the frequency range of the backend. The spectra have RMS noise of 0.4K per channel and intensities are on the T(R)* scale. The spectra were taken on a 3'x3' grid for longitudes between 18 deg and 55 deg. At other longitudes, the grid spacing was 6'x6'. The data are in 3-dimensional FITS files; the axes are LSR velocity, latitude, and longitude.
1136. 2MASS All-Sky Catalog of Point Sources
ID:
ivo://CDS.VizieR/II/246
Title:
2MASS All-Sky Catalog of Point Sources
Short Name:
II/246
Date:
21 Oct 2021
Publisher:
CDS
Description:
The Two Micron All Sky Survey (2MASS) project is designed to close the gap between our current technical capability and our knowledge of the near-infrared sky. In addition to providing a context for the interpretation of results obtained at infrared and other wavelengths, 2MASS will provide direct answers to immediate questions on the large-scale structure of the Milky Way and the Local Universe. To achieve these goals, 2MASS is uniformly scanning the entire sky in three near-infrared bands to detect and characterize point sources brighter than about 1 mJy in each band, with signal-to-noise ratio (SNR) greater than 10, using a pixel size of 2.0". This will achieve an 80,000-fold improvement in sensitivity relative to earlier surveys. 2MASS uses two new, highly-automated 1.3-m telescopes, one at Mt. Hopkins, AZ, and one at CTIO, Chile. Each telescope is equipped with a three-channel camera, each channel consisting of a 256x256 array of HgCdTe detectors, capable of observing the sky simultaneously at J (1.25 {mu}m), H (1.65 {mu}m), and Ks (2.17 {mu}m), to a 3{sigma} limiting sensitivity of 17.1, 16.4 and 15.3mag in the three bands. The 2MASS arrays image the sky while the telescopes scan smoothly in declination at a rate of ~1' per second. The 2MASS data "tiles" are 6 deg. long in the declination direction and one camera frame (8.5') wide. The camera field-of-view shifts by ~1/6 of a frame in declination from frame-to-frame. The camera images each point on the sky six times for a total integration time of 7.8 s, with sub-pixel "dithering", which improves the ultimate spatial resolution of the final Atlas Images. The University of Massachusetts (UMass) is responsible for the overall management of the project, and for developing the infrared cameras and on-site computing systems at both facilities. The Infrared Processing and Analysis Center (IPAC) is responsible for all data processing through the Production Pipeline, and construction and distribution of the data products. The 2MASS project involves the participation of members of the Science Team from several different institutions. The 2MASS project is funding by the National Aeronautics and Space Administration (NASA) and the National Science Foundation (NSF).
1137. 2MASS All-Sky Extended Source Catalog
ID:
ivo://irsa.ipac/2MASS/Catalog/XSC
Title:
2MASS All-Sky Extended Source Catalog
Short Name:
2MASS-XSC
Date:
25 May 2021 00:17:54
Publisher:
NASA/IPAC Infrared Science Archive
Description:
2MASS has uniformly scanned the entire sky in three near-infrared bands to detect and characterize point sources brighter than about 1 mJy in each band, with signal-to-noise ratio (SNR) greater than 1.
1138. 2MASS All-Sky Point Source Catalog
ID:
ivo://irsa.ipac/2MASS/Catalog/PSC
Title:
2MASS All-Sky Point Source Catalog
Short Name:
2MASS-PSC
Date:
25 May 2021 00:17:54
Publisher:
NASA/IPAC Infrared Science Archive
Description:
2MASS has uniformly scanned the entire sky in three near-infrared bands to detect and characterize point sources brighter than about 1 mJy in each band, with signal-to-noise ratio (SNR) greater than 1.
1139. 2MASS Catalog Incremental Data Release
ID:
ivo://CDS.VizieR/II/241
Title:
2MASS Catalog Incremental Data Release
Short Name:
II/241
Date:
21 Oct 2021
Publisher:
CDS
Description:
The Two Micron All Sky Survey (2MASS) project is designed to close the gap between our current technical capability and our knowledge of the near-infrared sky. In addition to providing a context for the interpretation of results obtained at infrared and other wavelengths, 2MASS will provide direct answers to immediate questions on the large-scale structure of the Milky Way and the Local Universe. To achieve these goals, 2MASS is uniformly scanning the entire sky in three near-infrared bands to detect and characterize point sources brighter than about 1 mJy in each band, with signal-to-noise ratio (SNR) greater than 10, using a pixel size of 2.0". This will achieve an 80,000-fold improvement in sensitivity relative to earlier surveys. 2MASS uses two new, highly-automated 1.3-m telescopes, one at Mt. Hopkins, AZ, and one at CTIO, Chile. Each telescope is equipped with a three-channel camera, each channel consisting of a 256x256 array of HgCdTe detectors, capable of observing the sky simultaneously at J (1.25 {mu}m), H (1.65 {mu}m), and Ks (2.17 {mu}m), to a 3{sigma} limiting sensivity of 17.1, 16.4 and 1.3mag in thge three bands. The 2MASS arrays image the sky while the telescopes scan smoothly in declination at a rate of ~1' per second. The 2MASS data "tiles" are 6{deg} long in the declination direction and one camera frame (8.5') wide. The camera field-of-view shifts by ~1/6 of a frame in declination from frame-to-frame. The camera images each point on the sky six times for a total integration time of 7.8 s, with sub-pixel "dithering", which improves the ultimate spatial resolution of the final Atlas Images. The University of Massachusetts (UMass) is responsible for the overall management of the project, and for developing the infrared cameras and on-site computing systems at both facilities. The Infrared Processing and Analysis Center (IPAC) is responsible for all data processing through the Production Pipeline, and construction and distribution of the data products. The 2MASS project involves the participation of members of the Science Team from several different institutions. The 2MASS project is funding by the National Aeronautics and Space Administration (NASA) and the National Science Foundation (NSF).
1140. 2MASS ConeSearch
ID:
ivo://archive.stsci.edu/catalogs/2MASS
Title:
2MASS ConeSearch
Short Name:
2MASS CS
Date:
13 Feb 2020 17:34:09
Publisher:
Space Telescope Science Institute Archive
Description:
All MAST catalog holdings are available via a ConeSearch endpoint. The Two Micron All Sky Survey (2MASS) catalog holdings at MAST are available with this access url. All available missions are listed at http://archive.stsci.edu/vo/mast_services.html.

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