dc.creator |
Kajino, Hiroki |
|
dc.creator |
Ohta, Kouji |
|
dc.creator |
Iwata, Ikuru |
|
dc.creator |
Yabe, Kiyoto |
|
dc.creator |
Yuma, Suraphong |
|
dc.creator |
Akiyama, Masayuki |
|
dc.creator |
Tamura, Naoyuki |
|
dc.creator |
Aoki, Kentaro |
|
dc.creator |
Sawicki, Marcin, 1969- |
|
dc.date.accessioned |
2015-09-10T12:48:28Z |
|
dc.date.available |
2015-09-10T12:48:28Z |
|
dc.date.issued |
2009-10-10 |
|
dc.identifier.issn |
0004-637X |
|
dc.identifier.uri |
http://library2.smu.ca/xmlui/handle/01/26302 |
|
dc.description |
Publisher's version/PDF |
en_CA |
dc.description.abstract |
We present results of optical spectroscopic observations of candidates of Lyman break galaxies (LBGs) at z ∼ 5 in the region, including the GOODS-N and the J0053+1234 regions by using Gemini Multi-Object Spectrograph North and South, respectively. Among 25 candidates, five objects are identified to be at z ∼ 5 (two of them were already identified by an earlier study) and one object very close to the color-selection window turned out to be a foreground galaxy. With this spectroscopically identified sample and those from previous studies, we derived the lower limits on the number density of bright (M[subscript UV] [less than] −22.0 mag) LBGs at z ∼ 5. These lower limits are comparable to or slightly smaller than the number densities of UV luminosity functions (UVLFs) that show the smaller number density among z ∼ 5 UVLFs in literature. However, by considering that there remain many LBG candidates without spectroscopic observations, the number density of bright LBGs is expected to increase by a factor of two or more. The evidence for the deficiency of UV luminous LBGs with large Ly[alpha] equivalent widths was reinforced. We discuss possible causes for the deficiency and prefer the interpretation of dust absorption. |
en_CA |
dc.description.provenance |
Submitted by Janine Mills (janine.mills@smu.ca) on 2015-09-10T12:48:27Z
No. of bitstreams: 1
Sawicki_Marcin_article_2009.pdf: 520710 bytes, checksum: 8d15a1e06fe1cae39ec8c098503650da (MD5) |
en |
dc.description.provenance |
Made available in DSpace on 2015-09-10T12:48:28Z (GMT). No. of bitstreams: 1
Sawicki_Marcin_article_2009.pdf: 520710 bytes, checksum: 8d15a1e06fe1cae39ec8c098503650da (MD5)
Previous issue date: 2009-10-10 |
en |
dc.language.iso |
en |
en_CA |
dc.publisher |
American Astronomical Society |
en_CA |
dc.relation.uri |
http://dx.doi.org/10.1088/0004-637X/704/1/117 |
|
dc.rights |
Article is made available in accordance with the publisher’s policy and is subject to copyright law. Please refer to the publisher’s site. Any re-use of this article is to be in accordance with the publisher’s copyright policy. This posting is in no way granting any permission for re-use to the reader/user. |
|
dc.subject.lcsh |
Galaxies -- Evolution |
|
dc.subject.lcsh |
Galaxies -- Formation |
|
dc.subject.lcsh |
Red shift |
|
dc.title |
Lyman break galaxies at z ∼ 5: rest-frame UV spectra. III. |
en_CA |
dc.type |
Text |
en_CA |
dcterms.bibliographicCitation |
Astrophysical Journal 704(1), 117-125. (2009) |
en_CA |
Copyright statement:
Article is made available in accordance with the publisher’s policy and is subject to copyright law. Please refer to the publisher’s site. Any re-use of this article is to be in accordance with the publisher’s copyright policy. This posting is in no way granting any permission for re-use to the reader/user.