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2061. Catalog of X-ray sources from TTM/COMIS
ID:
ivo://CDS.VizieR/J/PAZh/26/355
Title:
Catalog of X-ray sources from TTM/COMIS
Short Name:
J/PAZh/26/355
Date:
21 Oct 2021
Publisher:
CDS
Description:
A Catalog of X-ray sources as observed by the TTM/COMIS telescope onboard the Mir-Kvant observatory is presented. Brief information about the 67 sources detected at a confidence level higher than 4{sigma} between 1988 and 1998 is provided. X-ray properties and charateristic spectra of different types of sources are briefly described.
2062. Catalog of X-ray sources in NGC 3379
ID:
ivo://CDS.VizieR/J/ApJS/179/142
Title:
Catalog of X-ray sources in NGC 3379
Short Name:
J/ApJS/179/142
Date:
21 Oct 2021
Publisher:
CDS
Description:
We present the properties of the discrete X-ray sources detected in our monitoring program of the 'typical' elliptical galaxy, NGC 3379, observed with Chandra ACIS-S in five separate pointings, resulting in a co-added exposure of 324ks. From this deep observation, 132 sources have been detected within the region overlapped by all observations, 98 of which lie within the D_25_ ellipse of the galaxy. These 132 sources range in L_X_ from 6x10^35^erg/s (with 3{sigma} upper limit <=4x10^36^erg/s) to ~2x10^39^erg/s, including one source with L_X_>1x10^39^erg/s, which has been classified as an ULX. From optical data, 10 X-ray sources have been determined to be coincident with a globular cluster, these sources tend to have high X-ray luminosity, with three of these sources exhibiting L_X_>1x10^38^erg/s. From X-ray source photometry, it has been determined that the majority of the 132 sources that have well constrained colors, have values that are consistent with typical LMXB spectra. In addition to this, a subpopulation of 10 sources has been found to exhibit very hard spectra and it is expected that most of these sources are absorbed background AGN. There are 64 sources in this population that exhibit long-term variability, indicating that they are accreting compact objects. Five of these sources have been identified as transient candidates, with a further 3 possible transients. Spectral variations have also been identified in the majority of the source population, where a diverse range of variability has been identified, indicating that there are many different source classes located within this galaxy.
2063. Catalog of X-ray sources in NGC 4278
ID:
ivo://CDS.VizieR/J/ApJS/181/605
Title:
Catalog of X-ray sources in NGC 4278
Short Name:
J/ApJS/181/605
Date:
21 Oct 2021
Publisher:
CDS
Description:
We present the properties of the discrete X-ray sources detected in our monitoring program of the globular cluster (GC) rich elliptical galaxy, NGC 4278, observed with Chandra ACIS-S in six separate pointings, resulting in a co-added exposure of 458ks. From this deep observation, 236 sources have been detected within the region overlapped by all observations, 180 of which lie within the D25 ellipse of the galaxy. These 236 sources range in L_X_ from 3.5x10^36^erg/s (with 3{sigma} upper limit <=1x10^37^erg/s) to ~2x10^40^erg/s, including the central nuclear source which has been classified as a LINER. From optical data, 39 X-ray sources have been determined to be coincident with a GC, these sources tend to have high X-ray luminosity, with 10 of these sources exhibiting L_X_>1x10^38^erg/s. From X-ray source photometry, it has been determined that the majority of the 236 point sources that have well-constrained colors have values that are consistent with typical low-mass X-ray binary spectra, with 29 of these sources expected to be background objects from the log N-log S relation. There are 103 sources in this population that exhibit long-term variability, indicating that they are accreting compact objects. Three of these sources have been identified as transient candidates, with a further three possible transients. Spectral variations have also been identified in the majority of the source population, where a diverse range of variability has been identified, indicating that there are many different source classes located within this galaxy.
2064. Catalog of X-ray sources in the CYDER fields
ID:
ivo://CDS.VizieR/J/ApJ/621/104
Title:
Catalog of X-ray sources in the CYDER fields
Short Name:
J/ApJ/621/104
Date:
21 Oct 2021
Publisher:
CDS
Description:
We present the first results from the Calan-Yale Deep Extragalactic Research (CYDER) survey. The main goal of this survey is to study serendipitous X-ray sources detected by Chandra in an intermediate flux range (10^-15^ to 10^-12^ergs/s) that comprises most of the X-ray background. A total of 267 X-ray sources spread over five archived fields were detected.
2065. Catalog of X-ray sources in the NARCS
ID:
ivo://CDS.VizieR/J/ApJ/796/105
Title:
Catalog of X-ray sources in the NARCS
Short Name:
J/ApJ/796/105
Date:
21 Oct 2021
Publisher:
CDS
Description:
We present a catalog of 1415 X-ray sources identified in the Norma Arm Region Chandra Survey (NARCS), which covers a 2{deg}x0.8{deg} region in the direction of the Norma spiral arm to a depth of ~20 ks. Of these sources, 1130 are point-like sources detected with >=3{sigma} confidence in at least one of three energy bands (0.5-10, 0.5-2, and 2-10 keV), five have extended emission, and the remainder are detected at low significance. Since most sources have too few counts to permit individual classification, they are divided into five spectral groups defined by their quantile properties. We analyze stacked spectra of X-ray sources within each group, in conjunction with their fluxes, variability, and infrared counterparts, to identify the dominant populations in our survey. We find that ~50% of our sources are foreground sources located within 1-2 kpc, which is consistent with expectations from previous surveys. Approximately 20% of sources are likely located in the proximity of the Scutum-Crux and near Norma arm, while 30% are more distant, in the proximity of the far Norma arm or beyond. We argue that a mixture of magnetic and nonmagnetic cataclysmic variables dominates the Scutum-Crux and near Norma arms, while intermediate polars and high-mass stars (isolated or in binaries) dominate the far Norma arm. We also present the cumulative number count distribution for sources in our survey that are detected in the hard energy band. A population of very hard sources in the vicinity of the far Norma arm and active galactic nuclei dominate the hard X-ray emission down to f_X_~10^-14^ erg/cm^2^/s, but the distribution curve flattens at fainter fluxes. We find good agreement between the observed distribution and predictions based on other surveys.
2066. Catalogs of potential detections of asteroids
ID:
ivo://CDS.VizieR/J/A+A/659/A38
Title:
Catalogs of potential detections of asteroids
Short Name:
J/A+A/659/A38
Date:
02 Mar 2022 07:50:46
Publisher:
CDS
Description:
The store of data collected in public astronomical archives across the world is continuously expanding and, thus, providing a convenient interface for accessing this information is a major concern for ensuring a second life for the data. In this context, Solar System objects (SSOs) are often difficult or even impossible to query, owing to their ever-changing sky coordinates. Our study is aimed at providing the scientific community with a search service for all potential detections of SSOs among the ESA astronomy archival imaging data, called the Solar System Object Search Service (SSOSS). We illustrate its functionalities using the case of asteroid (16) Psyche, for which no information in the far-IR (70-500 $\mu$m) has previously been reported, to derive its thermal properties in preparation for the upcoming NASA Psyche mission. We performed a geometrical cross-match of the orbital path of each object, as seen by the satellite reference frame, with respect to the public high-level imaging footprints stored in the ESA archives. There are about 800000 asteroids and 2000 comets included in the SSOSS, available through ESASky, providing both targeted and serendipitous observations. For this first release, three missions were chosen: XMM-Newton, the Hubble Space Telescope (HST), and Herschel Observatory. We present a catalog listing all potential detections of asteroids within estimated limiting magnitude or flux limit in Herschel, XMM-Newton, and HST archival imaging data, including 909 serendipitous detections in Herschel images, 985 in XMM-Newton Optical Monitor camera images, and over 32000 potential serendipitous detections in HST images. We also present a case study: the analysis of the thermal properties of Psyche from four serendipitous Herschel detections, combined with previously published thermal IR measurements. We see strong evidence for an unusual drop in (hemispherical spectral) emissivity, from 0.9 at 100um down to about 0.6 at 350um, followed by a possible but not well-constrained increase towards 500um, comparable to what was found for Vesta. The combined thermal data set puts a strong constraint on Psyche's thermal inertia (between 20 to 80J/m^2^/s^1/2^/K) and favors an intermediate to low level surface roughness (below 0.4 for the rms of surface slopes). Conclusions: Using the example of Psyche, we show how the SSOSS provides fast access to observations of SSOs from the ESA astronomical archives, regardless of whether the particular object was the actual target. This greatly simplifies the task of searching, identifying, and retrieving such data for scientific analysis.
2067. Catalogue and Bibliography of Mn-Hg Stars
ID:
ivo://CDS.VizieR/III/59
Title:
Catalogue and Bibliography of Mn-Hg Stars
Short Name:
III/59
Date:
21 Oct 2021
Publisher:
CDS
Description:
In the present catalogue all Ap stars of the type Mn-Hg, Mn or Hg are summarized. Also, the stars which are suspected to be of this type are included. If in the literature two or more classifications of a star indicate the same type (or one with high dispersion) it is listed as of known type. If only doubtful or different classifications exist for a star, it is indicated as suspected.
2068. Catalogue and Bibliography of UV Cet stars
ID:
ivo://CDS.VizieR/J/A+AS/139/555
Title:
Catalogue and Bibliography of UV Cet stars
Short Name:
J/A+AS/139/555
Date:
21 Oct 2021
Publisher:
CDS
Description:
This new catalogue of flare stars includes 463 objects. It contains astrometric, spectral and photometric data as well as information on the infrared, radio and X-ray properties and general stellar parameters. From the total reference list of about 3400 articles, partial lists selected by objects, authors, key words and by any pairs of these criteria can be obtained.
2069. Catalogue de Zimmerman
ID:
ivo://CDS.VizieR/I/45
Title:
Catalogue de Zimmerman
Short Name:
I/45
Date:
21 Oct 2021
Publisher:
CDS
Description:
This Catalogue was created for geodetical purposes, mainly for the determination of the latitude by Talkott's method. It contains all stars up to 6 vis. mag. from -10 to +90 degrees. It is composed of 1334 "geodetic" stars and 1623 "Pulkovo" stars. The "geodetic" stars were observed on 5 observatories (Pulkovo, GAISH, Kazan, Nikolaev and Tashkent) by differential methods: each star was observed 8 times in the system of "Pulkovo" stars, during years 1934-1939. The Catalogue of 1623 "Pulkovo" Stars was observed in the years approx. 1910-1925 in Pulkovo, Alger, Babelsberg, Washington, Greenwich, Cape, Nicolaev, Paris and Uccle, mainly by absolute methods. There are corrections to FK3 for each star.