Table information for 'apass.dr10'

General

This table is available for ADQL queries and through the TAP endpoint.

Resource Description:

AAVSO Photometric All-Sky Survey (APASS), underway since 2010, covers the entire sky from 7.5 < V < 16.5 magnitude, and in the BVugrizY bandpasses. A northern and a southern site are used, each with twin ASA 20cm astrographs and Apogee Aspen CG16m cameras, covering 2.9x2.9 square degrees with 2.6arcsec pixels. Landolt and SDSS standards are used for all-sky solutions, with typical 0.02mag calibration errors on the bright end.

Data Release 10 is a complete reprocessing of all 500K images taken with the system, including hundreds of nights not part of DR9. Sextractor is used for star finding and centroiding; DAOPHOT is used for aperture photometry; the astrometry.net plate-solving library is used for basic astrometry, supplanted with more precise WCS that utilizes knowledge of the optical train distortions. With these changes, DR10 includes many more stars than prior releases.

More information is available at http://www.aavso.org/apass.

For a list of all services and tables belonging to this table's resource, see Information on resource 'AAVSO Photometric All Sky Survey (APASS) DR10'

Citing this table

This table has an associated publication. If you use data from it, it may be appropriate to reference 2018AAS...23222306H (ADS BibTeX entry for the publication) either in addition to or instead of the service reference.

To cite the table as such, we suggest the following BibTeX entry:

@MISC{vo:apass_dr10,
  year=2018,
  title={{AAVSO} Photometric All Sky Survey ({APASS}) DR10},
  author={Henden, Arne A. and Levine, Stephen and Terrell, Dirk and Welch, Douglas L. and Munari, Ulisse and Kloppenborg, Brian K.},
  url={http://dc.zah.uni-heidelberg.de/tableinfo/apass.dr10},
  howpublished={{VO} resource provided by the {GAVO} Data Center}
}

Columns

Sorted alphabetically. [Sort by DB column index]

NameTable Head DescriptionUnitUCD
dec Dec ICRS declination for this object. N/A pos.eq.dec;meta.main
dec_error Err. Dec Estimated error in dec (there will be additional systematics especially in crowded fields). deg stat.error;pos.eq.dec
err_mag_b Err B Estimated error in mag_b. From a comparison with DR9, it appears these estimates are overly pessimistic. mag stat.error;phot.mag;em.opt.B
err_mag_g Err g Estimated error in mag_g. From a comparison with DR9, it appears these estimates are overly pessimistic. mag stat.error;phot.mag;em.opt.V
err_mag_i Err i Estimated error in mag_i. From a comparison with DR9, it appears these estimates are overly pessimistic. mag stat.error;phot.mag;em.opt.I
err_mag_r Err r Estimated error in mag_r. From a comparison with DR9, it appears these estimates are overly pessimistic. mag stat.error;phot.mag;em.opt.R
err_mag_u Err u Estimated error in mag_u. From a comparison with DR9, it appears these estimates are overly pessimistic. mag stat.error;phot.mag;em.opt.U
err_mag_v Err V Estimated error in mag_v. From a comparison with DR9, it appears these estimates are overly pessimistic. mag stat.error;phot.mag;em.opt.V
err_mag_y Err Y Estimated error in mag_y. From a comparison with DR9, it appears these estimates are overly pessimistic. mag stat.error;phot.mag;em.opt.I
err_mag_z_s Err z_s Estimated error in mag_z_s. From a comparison with DR9, it appears these estimates are overly pessimistic. mag stat.error;phot.mag;em.opt.I
id Id APASS DR10 identifier formed as (SPD zone)-(star number) N/A meta.id;meta.main
mag_b Mag B Magnitude in Johnson B (Vega system). This is an aperture magnitude obtained with DAOPHOT. mag phot.mag;em.opt.B
mag_g Mag g Magnitude in Sloan g' (AB system). This is an aperture magnitude obtained with DAOPHOT. mag phot.mag;em.opt.V
mag_i Mag i Magnitude in Sloan i' (AB system). This is an aperture magnitude obtained with DAOPHOT. mag phot.mag;em.opt.I
mag_r Mag r Magnitude in Sloan r' (AB system). This is an aperture magnitude obtained with DAOPHOT. mag phot.mag;em.opt.R
mag_u Mag u Magnitude in Sloan u' (AB system). This is an aperture magnitude obtained with DAOPHOT. mag phot.mag;em.opt.U
mag_v Mag V Magnitude in Johnson V (Vega system). This is an aperture magnitude obtained with DAOPHOT. mag phot.mag;em.opt.V
mag_y Mag Y Magnitude in Sloan Y (AB system). This is an aperture magnitude obtained with DAOPHOT. mag phot.mag;em.opt.I
mag_z_s Mag z_s Magnitude in Sloan z_s (AB system). This is an aperture magnitude obtained with DAOPHOT. mag phot.mag;em.opt.I
nobs_b N(B) Number of observations that went into mag_b N/A meta.number;obs;em.opt.B
nobs_g N(g) Number of observations that went into mag_g N/A meta.number;obs;em.opt.V
nobs_i N(i) Number of observations that went into mag_i N/A meta.number;obs;em.opt.I
nobs_r N(r) Number of observations that went into mag_r N/A meta.number;obs;em.opt.R
nobs_u N(u) Number of observations that went into mag_u N/A meta.number;obs;em.opt.U
nobs_v N(V) Number of observations that went into mag_v N/A meta.number;obs;em.opt.V
nobs_y N(Y) Number of observations that went into mag_y N/A meta.number;obs;em.opt.I
nobs_z_s N(z_s) Number of observations that went into mag_z_s N/A meta.number;obs;em.opt.I
ra Ra ICRS right ascension for this object. N/A pos.eq.ra;meta.main
ra_error Err. RA Estimated error in ra (there will be additional systematics especially in crowded fields). deg stat.error;pos.eq.ra

Columns that are parts of indices are marked like this.

Other

The following services may use the data contained in this table:

VOResource

VO nerds may sometimes need VOResource XML for this table.

Copyright and such: If you use this data in a paper, please include the following acknowledgement: “This paper makes use of data from the AAVSO Photometric All Sky Survey, whose funding has been provided by the Robert Martin Ayers Sciences Fund and from the NSF (AST-1412587).”