ANS Ultraviolet Photometry Catalog of Point Sources

ANS Ultraviolet Photometry Catalog of Point Sources ANSUVPSCAT ivo://nasa.heasarc/ansuvpscat NASA/GSFC HEASARC Wesselius et al. 2026-10-09 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Survey Source All reliable observations of point sources with the ultraviolet photometer onboard the Astronomical Netherlands Satellite (ANS) operating between the October 1974 and April 1976 are presented. Extended objects, non-detected objects, and objects at the edges of the instrument's field of view have been omitted. The catalog contains 3573 objects, mostly stars (the total ANS UV database contained 4800 observed positions). The ANS satellite observed in five UV channels centered around 150, 180, 220, 250 and 330 nm (1500, 1800, 2200, 2500 and 3300 Angstroms). The characteristics of the ANS UV photometric bands are: <pre> Band designation 15N 15W 18 22 25 33 ------------------------------------------------------------------------- Central wavelength (nm) 154.5 154.9 179.9 220.0 249.3 329.4 Bandwidth (nm) 5.0 14.9 14.9 20.0 15.0 10.1 </pre> The reported magnitudes were obtained from mean count rates converted to fluxes using the ANS absolute calibration of Wesselius et al. (1980A&A....85..221W). In addition to the ultraviolet magnitudes, the catalog contains positions taken from the satellite pointing, spectral types, and UBV data from other sources as well as comments on duplicity, variability, and miscellaneous notes concerning individual objects. Within the ANS photometric system, the UV magnitudes of different objects are comparable down to a level of 0.5-1.0%. Several studies on the intercomparison of all ANS data, and on the comparison of the ANS data with stellar models, with other UV satellites, and with the expected UV fluxes on the basis of ground-based information alone suggest that the ANS photometric system is well-established, and has, in particular, a linear dynamic range of at least a factor of 20,000. In these two respects, repeatability and dynamic range, the ANS UV instrument far exceeded all other UV missions then extant, e.g., TD-S2/68, OAO-WEP, and IUE. Of course, ANS had a much poorer spectral resolution, about 15 nm (150 Angstroms), than the other instruments. This table was created by the HEASARC in September 2011 based on <a href="https://cdsarc.cds.unistra.fr/ftp/cats/II/97">CDS Catalog II/97</a> file ans.dat. This is a service provided by NASA HEASARC . 1982A&AS...49..427W https://heasarc.gsfc.nasa.gov/W3Browse/all/ansuvpscat.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=ansuvpscat& GET text/xml 180 99999 true 323.47402701 -82.684098 0.0333333333333333 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=ansuvpscat GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_ansuvpscat&Action=More+Options&Action=Parameter+Search&ConeAdd=1 ANS 0.0333333333333333 UV public ansuvpscat ANS Ultraviolet Photometry Catalog of Point Sources name Object Identification (HD/DM/NGC/IC) meta.id;meta.main char nullable ra Right Ascension degree pos.eq.ra;meta.main double nullable dec Declination degree pos.eq.dec;meta.main double nullable vmag V (Visual or Photoelectric) Magnitude mag phot.mag;em.opt.V double nullable bv_color B-V Color mag phot.color;em.opt.B;em.opt.V double nullable spect_type Spectral Type src.spType char nullable mag_w1550_a_limit Flag [>] Indicates an Upper Limit (S/N < 3) meta.code;phot.mag;em.UV.100-200nm char nullable mag_w1550_a Magnitude Around 155+/-15nm mag phot.mag;em.UV.100-200nm double nullable mag_w1550_a_error Error Estimate for Magnitude mag stat.error;phot.mag;em.UV.100-200nm double nullable mag_2500_a_limit Flag [>] Indicates an Upper Limit (S/N < 3) meta.code;phot.mag;em.UV.200-300nm char nullable mag_2500_a Magnitude Around 250+/-15nm mag phot.mag;em.UV.200-300nm double nullable mag_2500_a_error Error Estimate for Magnitude mag stat.error;phot.mag;em.UV.200-300nm double nullable "__x_ra_dec" System unit vector column double nullable "__y_ra_dec" System unit vector column double nullable "__z_ra_dec" System unit vector column double nullable "__row" System index column char nullable duplicity_flag Flag [D] Indicates Duplicity meta.code.multip char nullable variability_flag Flag [V] Indicates Variability meta.code;src.var char nullable mag_n1550_a_limit Flag [>] Indicates an Upper Limit (S/N < 3) meta.code;phot.mag;em.UV.100-200nm char nullable mag_1800_a_limit Flag [>] Indicates an Upper Limit (S/N < 3) meta.code;phot.mag;em.UV.100-200nm char nullable ub_color U-B Color mag phot.color;em.opt.U;em.opt.B double nullable mag_1800_a Magnitude Around 180+/-15nm mag phot.mag;em.UV.100-200nm double nullable mag_2200_a_limit Flag [>] Indicates an Upper Limit (S/N < 3) meta.code;phot.mag;em.UV.200-300nm char nullable mag_2200_a Magnitude Around 220+/-20nm mag phot.mag;em.UV.200-300nm double nullable mag_2200_a_error Error Estimate for Magnitude mag stat.error;phot.mag;em.UV.200-300nm double nullable mag_n1550_a_error Error Estimate for Magnitude mag stat.error;phot.mag;em.UV.100-200nm double nullable num_obs Number of Observations meta.number short nullable mag_3300_a Magnitude Around 330+/-10nm mag phot.mag;em.opt.U double nullable lii Galactic Longitude degree pos.galactic.lon double nullable mag_n1550_a Magnitude Around 155+/-5nm mag phot.mag;em.UV.100-200nm double nullable bii Galactic Latitude degree pos.galactic.lat double nullable class Browse Object Classification src.class short nullable vmag_flag Flag [VP] Indicates V=Visual or P=Photoelectric Magnitude meta.code;phot.mag;em.opt.V char nullable mag_1800_a_error Error Estimate for Magnitude mag stat.error;phot.mag;em.UV.100-200nm double nullable mag_3300_a_limit Flag [>] Indicates an Upper Limit (S/N < 3) meta.code;phot.mag;em.opt.U char nullable other_notes Other Notes and Remarks meta.note char nullable mag_3300_a_error Error Estimate for Magnitude mag stat.error;phot.mag;em.opt.U double nullable