CDROM/AJ/V113/P1939 VLA Survey of Hercules Cl. I. (Dickey 1997) ================================================================================ A VLA Survey of the Hercules Cluster. I. The H I Data John M. Dickey <1997, AJ, 113, 1939> =1997AJ....113.1939D ================================================================================ Abstract: This paper presents results from a survey of lambda 21-cm emission from galaxies in the Hercules Cluster, A2151 and A2147. Four VLA primary beam areas were covered, a total area of 0.9 square degrees, including some 120 spiral galaxies brighter than 17.5m. The velocity resolution is 44 km/s, the angular resolution 25". The detection threshold at field center is 2.6 x 10^8 h^{-2} Msun in H I mass or about 1.8 x 10^20 cm^{-2} in column density. There are 61 galaxies detected in H I, of which about 25 had been previously detected at lambda 21-cm. About ten of the detections correspond to galaxies that are very faint in the optical, m_E >= 18 or M >= -17^m - 5 log h. Some of these low surface brightness galaxies have very extended H I disks, with r >= 15 kpc. The abundance of H I is a strong function of position in the cluster, with galaxies in the south and west showing hardly any gas, and galaxies in the north and east of A2151 frequently having massive, extended gas disks. The morphology of the remnants of gas in galaxies in the south and west suggests that the intracluster medium is responsible for their H I deficiency, but there are also several dramatic galaxy mergers in progress. (c) 1997 American Astronomical Society. Description: The channel maps for the Hercules cluster are stored in 63 Encapsulated Postscript files named fig36.eps, fig37.eps, ... fig98.eps. For all figures, the contour levels are as in figure 15 in the printed paper. File Summary: -------------------------------------------------------------------------------- File Name Lrecl Records Explanations -------------------------------------------------------------------------------- table3.dat 59 394 Channel map centers fig36.eps 82 12314 Velocity channel maps of NE030 fig37.eps 82 12045 Velocity channel maps of NE089 fig38.eps 82 11255 Velocity channel maps of NE112 fig39.eps 82 8509 Velocity channel maps of NE142 fig40.eps 82 13475 Velocity channel maps of NE166 fig41.eps 82 8497 Velocity channel maps of NE169 fig42.eps 82 16657 Velocity channel maps of NE176 fig43.eps 82 10679 Velocity channel maps of NE178 fig44.eps 82 16776 Velocity channel maps of NE187 fig45.eps 82 8610 Velocity channel maps of NE204 fig46.eps 82 6991 Velocity channel maps of NE208 fig47.eps 82 10197 Velocity channel maps of NE222 fig48.eps 82 17662 Velocity channel maps of NE228 fig49.eps 82 8117 Velocity channel maps of NE240 fig50.eps 82 25406 Velocity channel maps of NE246 fig51.eps 82 12259 Velocity channel maps of NE250 fig52.eps 82 9177 Velocity channel maps of NE264 fig53.eps 82 17034 Velocity channel maps of NE300 fig54.eps 82 18168 Velocity channel maps of NE320 fig55.eps 82 12731 Velocity channel maps of NE350 fig56.eps 82 12428 Velocity channel maps of NE392 fig57.eps 82 13805 Velocity channel maps of NE398 fig58.eps 82 15061 Velocity channel maps of CE018 fig59.eps 82 12353 Velocity channel maps of CE042 fig60.eps 82 8907 Velocity channel maps of CE048 fig61.eps 82 10084 Velocity channel maps of CE060 fig62.eps 82 12532 Velocity channel maps of CE061 fig63.eps 82 13908 Velocity channel maps of CE070 fig64.eps 82 10425 Velocity channel maps of CE086 fig65.eps 82 18328 Velocity channel maps of CE095 fig66.eps 82 16803 Velocity channel maps of CE102 fig67.eps 82 17344 Velocity channel maps of CE109 fig68.eps 82 14792 Velocity channel maps of CE122 fig69.eps 82 13769 Velocity channel maps of CE137 fig70.eps 82 10827 Velocity channel maps of CE143 fig71.eps 82 17807 Velocity channel maps of CE155 fig72.eps 82 20364 Velocity channel maps of CE160 fig73.eps 82 9237 Velocity channel maps of CE166 fig74.eps 82 12370 Velocity channel maps of CE176 fig75.eps 82 18690 Velocity channel maps of CE189 fig76.eps 82 12127 Velocity channel maps of CE199 fig77.eps 82 6974 Velocity channel maps of CE200 fig78.eps 82 11394 Velocity channel maps of CE224 fig79.eps 82 14464 Velocity channel maps of CE253 fig80.eps 82 10105 Velocity channel maps of CE294 fig81.eps 82 19540 Velocity channel maps of SW048 fig82.eps 82 17368 Velocity channel maps of SW054 fig83.eps 82 19063 Velocity channel maps of SW083 fig84.eps 82 14691 Velocity channel maps of SW089 fig85.eps 82 10446 Velocity channel maps of SW103 fig86.eps 82 14374 Velocity channel maps of SW146 fig87.eps 82 8761 Velocity channel maps of SW159 fig88.eps 82 19227 Velocity channel maps of SW174 fig89.eps 82 14626 Velocity channel maps of SW194 fig90.eps 82 16856 Velocity channel maps of SW201 fig91.eps 82 10645 Velocity channel maps of SW222 fig92.eps 82 9319 Velocity channel maps of 47030 fig93.eps 82 12458 Velocity channel maps of 47052 fig94.eps 82 10383 Velocity channel maps of 47097 fig95.eps 82 9086 Velocity channel maps of 47138 fig96.eps 82 15874 Velocity channel maps of 47154 fig97.eps 82 9655 Velocity channel maps of 47166 fig98.eps 82 10656 Velocity channel maps of 47211 -------------------------------------------------------------------------------- Byte-by-byte Description of file: table3.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 5 A5 --- Alias Galaxy alias 6-13 F8.1 km/s cz Center velocity of the channel 14-18 I5 arcsec dRA *R.A. offset 19-23 I5 arcsec eDE *Dec. offset 24-29 F6.1 10+8Msun Mpeak *Peak H I mass in the channel 30-35 F6.1 10+8Msun Mint *Integrated H I mass in the channel -------------------------------------------------------------------------------- Notes for file: table3.dat -------------------------------------------------------------------------------- dRA, dDE: Offsets of the fitted peak position from the H I centroid position as given in Table 2 of the printed paper. Mpeak, Mint: The peak and integrated H I mass contained in the velocity channel similar to the last two coloumns of Table 2. -------------------------------------------------------------------------------- ================================================================================ (End) Lee Brotzman [ADS] 29-Aug-1997