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- ID:
- ivo://org.gavo.dc/emi/q/s
- Title:
- VLBI images of Lockman Hole radio sources
- Short Name:
- VLBI-Lockman
- Date:
- 27 Dec 2024 08:31:12
- Publisher:
- The GAVO DC team
- Description:
- These are 1.4GHz Very Long Baseline Interferometry images of 532 radio sources with a flux density exceeding 100uJy as determined by Ibar et al. (2009, MNRAS, 397, 281), obtained between 2010-06-03 and 2010-09-03. For all fields, we give frames processed using natural weighting to preserve maximal sensitivity. For the 65 detected sources, we additionally give frames processed using uniform weighting to suppress sidelobes (see Middelberg et al. 2013, A&A 551, 97 for details) in flux density measurements. Some sources have larger images to cover a larger area because the initial coordinates were not sufficiently accurate.
- ID:
- ivo://lam.cesam.aspic/vuds_dr1/q/ssa
- Title:
- VUDS-DR1 - Simple Spectrum Access
- Short Name:
- VUDS-DR1 SSAP
- Date:
- 24 Aug 2021 14:22:48
- Publisher:
- The CeSAM VO team
- Description:
- Spectra from the VIMOS Ultra–Deep Survey (VUDS) DR1 release
- ID:
- ivo://ar.nova/vvvsurvey/q/scs
- Title:
- VVV Survey Band Merged JHKs
- Short Name:
- NOVA VVVSurvey BM
- Date:
- 03 Mar 2015 00:55:01
- Publisher:
- Nova
- Description:
- Band merged JHKs catalogue for first epoch data from CASU v1.3. VVV DR1, corrected for header errors (Mike Irwin, Private Communication). Release of the Milky Way bulge and southern plane from the near-infrared ESO public survey VISTA variables in the Vía Láctea.
- ID:
- ivo://bsdc.icranet.org/whsp/q/cone
- Title:
- 1WHSP blazar candidates catalog
- Short Name:
- whsp cone
- Date:
- 21 Dec 2016 00:42:39
- Publisher:
- BSDC
- Description:
- The catalog 1WHSP is the result of a multi-frequency selection for blazars like SED, further filtered using IR-radio and IR-X-ray flux-ratios. The sample assembled contains almost 992 sources of HSP blazars, of which 425 are previously known blazars, 151 new identifications and 416 blazar candidates. On the very high energy trend, 299 are confirmed GeV gamma-ray photons emitters and 36 have already been detected in the TeV band.
- ID:
- ivo://org.gavo.dc/wfpdb/q/cone
- Title:
- Wide-Field Plate Database WFPDB
- Short Name:
- wfpdb cone
- Date:
- 27 Dec 2024 08:31:03
- Publisher:
- The GAVO DC team
- Description:
- The Wide-Field Plate Database (WFPDB_) contains the descriptive information for the astronomical wide-field (>1°) photographic observations stored in numerous archives all over the world. The total number of these observations, obtained since the end of the 19th century with more then 200 instruments (telescopes) is about 2 550 000 from 509 archives. The WFPDB is continually being updated, providing currently access to the information for about 640 000 plates from 117 plate archives (30% of the estimated total number of wide-field plates) .. _WFPDB: http://www.skyarchive.org/
- ID:
- ivo://org.gavo.dc/wise/q/s
- Title:
- WISE All-Sky Release Catalog SCS
- Short Name:
- WISE scs
- Date:
- 27 Dec 2024 08:31:05
- Publisher:
- The GAVO DC team
- Description:
- The Wide-field Infrared Survey Explorer (WISE) is a space-based imaging survey of the entire sky in the 3.4 (W1), 4.6 (W2), 12 (W3), and 22 (W4) μm mid-infrared. This is the project's reliable Source Catalog containing accurate photometry and astrometry for over 500 million objects. More details are available in the `Explanatory Supplement`_, which also has a list of `Cautionary Notes`_. .. _Explanatory Supplement: http://wise2.ipac.caltech.edu/docs/release/allsky/expsup/sec1_1.html .. _Cautionary Notes: http://wise2.ipac.caltech.edu/docs/release/allsky/expsup/sec1_4b.html
- ID:
- ivo://ar.nova/fcaglp2/q/ssa
- Title:
- WR 35a: A new double-lined spectroscopic binary (Gamen+, 2014, A&A, 562, 13) at NOVA
- Short Name:
- NOVA WR35a
- Date:
- 30 Dec 2015 14:50:29
- Publisher:
- Nova
- Description:
- Reduced spectra used in the paper entitled "WR 35a: A new double-lined spectroscopic binary", by R. Gamen et al. to appear in the A&A journal (2014).
- ID:
- ivo://xaovo/liujun/liujun/q
- Title:
- XAO AGN Flux Monitoring Data
- Short Name:
- liujun_web
- Date:
- 25 Jun 2024 10:32:03
- 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:
- 02 Jan 2025 14:01:21
- 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.
