Wide-field imaging of Hubble Deep Field-South region. I. Quasar candidates

被引：13

作者：

Palunas, P ^{[1
]}

Collins, NR ^{[1
]}

Gardner, JP ^{[1
]}

Hill, RS ^{[1
]}

Malumuth, EM ^{[1
]}

Smette, A ^{[1
]}

Teplitz, HI ^{[1
]}

Williger, GM ^{[1
]}

Woodgate, BE ^{[1
]}

机构：

[1] NASA, Goddard Space Flight Ctr, Astron & Solar Phys Lab, Greenbelt, MD 20771 USA

来源：

ASTROPHYSICAL JOURNAL | 2000年 / 541卷 / 01期

关键词：

large-scale structure of universe; quasars : emission lines; quasars : general; quasars : individual (J2233-6033); surveys;

D O I：

10.1086/309434

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present candidate quasars from a multicolor (uBVRI + narrowband) imaging survey of 1/2 square degree around the Hubble Deep Field-South (HDF-S). We identify 154 candidate quasars with B < 23 using color selection, consistent with previously measured QSO number counts if we assume a 60% selection efficiency. The narrowband filter (NB) was centered at 3958 Angstrom to detect Ly alpha at the redshift of J2233-6033, the HDF-S QSO. We confirm the presence of Ly alpha nebulosity extending similar to 12" around the HDF-S QSO, reported by Bergeron and coworkers. We detect 10 pointlike objects in emission through the NE filter. Of these, seven satisfy our QSO color selection criteria. One of the emission-line objects is a B similar to 20 radio-quiet quasar at z = 1.56, 6.'7 from the line of sight to the HDF-S QSO and similar to 12" from the western edge of the WFPC2 deep field.

引用

页码：61 / 65

页数：5

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