2001JAVSO..29..112S


Query : 2001JAVSO..29..112S

2001JAVSO..29..112S - J. Am. Assoc. Variable star obs., 29, 112-117 (2001/June-0)

Lost variables in Sagittarius and Cygnus recovered on Nantucket plates.

SAMUS N., PETERSON C., HOLMES S. and SINGER K.

Abstract (from CDS):

Mass discoveries of variable stars by modern automatic sky surveys make it very important to determine accurate coordinates for all previously documented variable stars. For many "old" variable stars, no finding charts were ever published, and only rough coordinates were reported. Existing collections of sky photographs, however, make it possible to recover such "lost" variable stars. Here, we present our results on the recovery of nine "lost" variable stars: NY Cyg, QX Cyg, VW Sgr, GW Sgr, GZ Sgr, HK Sgr, HT Sgr, HU Sgr, and HW Sgr, using plates from the Maria Mitchell Observatory collection in Nantucket, Massachusetts. For the stars recovered, we present finder charts, accurate coordinates, improved classification, and light elements. In the case of HW Sgr, there is an indisputably variable star approximately in the published position, but the character of its variability is in complete disagreement with earlier data. Either HW Sgr was misclassified by the discoverer, or the discoverer's position for the star is in error and we have actually discovered a new variable.

Abstract Copyright:

Journal keyword(s): NY Cyg, QX Cyg, VW Sgr, GW Sgr, GZ Sgr, HK Sgr, HT Sgr, HU Sgr, HW Sgr, Variable Stars

Simbad objects: 9

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Number of rows : 9
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024
#notes
1 V* VW Sgr EB* 18 00 20.4471580992 -21 08 00.446537004           ~ 5 0
2 V* GW Sgr RV* 18 25 24.4897173744 -25 02 06.233197884     13.448   12.232 ~ 13 0
3 V* GZ Sgr Mi* 18 25 35.9150794248 -23 45 00.818763012         10.941 M7 9 0
4 V* HK Sgr Mi* 18 26 13.8204181512 -24 38 51.844427808       12.474 8.787 M7-8 11 1
5 V* HT Sgr Mi* 18 28 23.2079369544 -25 40 54.037787556         10.685 M4-M8 9 0
6 V* HU Sgr Mi* 18 29 03.0891201504 -25 04 37.459934508           M7 8 0
7 V* HW Sgr EB* 18 29 47.4521911944 -24 50 32.794430424           ~ 5 0
8 V* NY Cyg EB* 19 52 34.5574207728 +37 55 44.447680092           A1 8 0
9 V* QX Cyg EB* 19 58 34.7251780728 +38 14 35.251249128     11.95 14.13   F1 18 0

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