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- ID:
- ivo://xaovo/gaia/q3/cone
- Title:
- Gaia DR3 Lite Cone Search
- Short Name:
- DR3 lite Cone
- Date:
- 14 Jun 2023 08:15:26
- Publisher:
- Xinjiang Astronomical Observatory,CAS
- Description:
- This schema contains data re-published from the official Gaia mirrors (such as ivo://uni-heidelberg.de/gaia/tap) either to support combining its data with local tables (the various Xlite tables) or to make the data more accessible to VO clients (e.g., epoch fluxes).
- ID:
- ivo://xaovo/nsone/q/web
- Title:
- 1M-WideField Images Web
- Short Name:
- NOWT_web
- Date:
- 25 Mar 2024 03:33:36
- Publisher:
- Xinjiang Astronomical Observatory,CAS
- Description:
- Images created by 1M-WideField
- ID:
- ivo://xaovo/ppmxl/q/cone
- Title:
- PPMXL Catalog Cone Search
- Short Name:
- XAO PPMXL
- Date:
- 07 Jun 2023 04:15:01
- Publisher:
- Xinjiang Astronomical Observatory,CAS
- Description:
- PPMXL is a catalog of positions, proper motions, 2MASS- and optical photometry of 900 million stars and galaxies, aiming to be complete down to about V=20 full-sky. It is the result of a re-reduction of USNO-B1 together with 2MASS to the ICRS as represented by PPMX.
- ID:
- ivo://xaovo/liujun/liujun/q
- Title:
- XAO AGN Flux Monitoring Data
- Short Name:
- liujun_web
- Date:
- 04 Feb 2024 13:22:02
- Publisher:
- Xinjiang Astronomical Observatory,CAS
- Description:
- Active Galactic Nuclei (AGNs) are extragalactic objects characterized by extremely complex physical processes and strong temporal flux variability over almost the whole electromagnetic spectrum, which play a very important role in studying the formation and evolution of galaxies, cosmology and many other astrophysical problems. Flux variability is one of the most remarkable observational characteristics of AGNs and the variability time scales are from minutes to dozens of years. Multi-wavelength flux monitoring is the main means to study the nature of AGN flux variability. In order to systematically study the total flux variability of AGNs in radio band, we launched a long-term program, which is called the quasi- Simultaneous Multiwavelength Monitoring of AGNs with the Nanshan 26-m radio telescope of Xinjiang Astronomical Observatory (XAO), namely SMMAN program. The monitoring data were acquired monthly with the cross-scan mode at C-band (4.8 GHz) and K-band (23.6 GHz) for a sample of about 100 AGNs selected from Fermi-LAT suvery. Additionally, we also conducted weekly monitoring observations or Intra-Day Vairibility (IDV) observations for some of flaring Blazars to reveal their more complex variability time scales.
- ID:
- ivo://xaovo/pul/pulsar/q
- Title:
- XAO Pulsar Data Query
- Short Name:
- Pulsar_web
- Date:
- 25 Mar 2024 03:01:22
- Publisher:
- Xinjiang Astronomical Observatory,CAS
- Description:
- The pulsar timing data were obtained with the Nanshan 25M radio telescope. Our observations, which commenced in January 2000, have been made using a dual-channel room-temperature receiver with a bandwidth of 320 MHz centered at 1540 MHz before June 2002. The de-dispersion was provided by a 2X128X2.5 MHz analog filter-bank. A cryogenic receiver was mounted in July 2002, which increases the sensitivity to 0.5 mJy. In January 2010, a digital filter-bank (DFB) system came into operation. The higher time resolution allows us to monitor about 280 pulsars, including ten millisecond-pulsars (MSP). The format of the DFB data is "Psrfit". The "psrchive" program could reads and analyzes the data. Timing observations of 74 pulsars have been regularly carried out between 2002 July to 2009 December. These 74 pulsars have been monitored approximately once every 9d using a dual-channel cryogenic system that receives orthogonal linear polarizations at the central observing frequency of 1540 MHz. The folded profiles obtained are released in format PSRFITS for timing analysis, the file name extension is .FTp. Users can enter "~*.FTp*" in "Product key" filed to search and download it. Non-public data could be used with the permission of Dr. Shengnan Sun (sunshengnan@xao.ac.cn), please send an email for your request.
- ID:
- ivo://xaovo/wugang/wugang/q
- Title:
- XAO SF Data Query
- Short Name:
- wugang_web
- Date:
- 04 Feb 2024 00:50:07
- Publisher:
- Xinjiang Astronomical Observatory,CAS
- Description:
- The molecular spectrum lines data include mainly ammonia and water masers lines at 1.3cm band, as well as formaldehyde and recombination lines at 6cm band observed towards both our Galactic plane and nearby molecular clouds and star-forming regions.
