JWST/NIRCam Narrowband Survey of Pa$β$ Emitters in the Spiderweb Protocluster at z=2.16
Fuente:
arXiv
Enregistré dans:
| Auteurs principaux: | , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Publié: |
2024
|
| Sujets: | |
| Accès en ligne: | |
| Tags: |
Ajouter un tag
Pas de tags, Soyez le premier à ajouter un tag!
|
| _version_ | 1866910633185771520 |
|---|---|
| author | Shimakawa, Rhythm Perez-Martinez, J. M. Dannerbauer, Helmut Koyama, Yusei Kodama, Tadayuki Perez-Gonzalez, Pablo G. D'Eugenio, Chiara Zhang, Yuheng Naufal, Abdurrahman Daikuhara, Kazuki |
| author_facet | Shimakawa, Rhythm Perez-Martinez, J. M. Dannerbauer, Helmut Koyama, Yusei Kodama, Tadayuki Perez-Gonzalez, Pablo G. D'Eugenio, Chiara Zhang, Yuheng Naufal, Abdurrahman Daikuhara, Kazuki |
| contents | We report the initial result of our Pa$β$ narrowband imaging on a protocluster with the JWST Near Infrared Camera (NIRCam). As NIRCam enables deep narrowband imaging of rest-frame NIR lines at $z>1$, we target one of the most studied protoclusters, the Spiderweb protocluster at $z=2.16$, in which previous studies have confirmed more than a hundred member galaxies. The NIRCam F405N narrowband filter covers in Pa$β$ line the protocluster redshift given by known protocluster members, allowing the search for new member candidates. The weight-corrected color-magnitude diagram obtained 57 sources showing narrowband excesses, 41 of which satisfy further color selection criteria for limiting the sample to Pa$β$ emitter candidates at $z\sim2.16$, and 24 of them do not have H$α$ emitter counterparts. The Pa$β$ emitter candidates appear to follow the spatial distribution of known protocluster members; however, follow-up spectroscopic confirmation is required. Only 17 out of 58 known H$α$-emitting cluster members are selected as Pa$β$ emitters in the current data, albeit the rest fall out of the narrowband selection owing to their small Pa$β$ equivalent widths. We derive Pa$β$ luminosity function in the Spiderweb protocluster, showing a normalization density of $\log{ϕ^\ast}=-2.53\pm0.15$ at a characteristic Pa$β$ luminosity of $\log{L^\ast}=42.33\pm0.17$. Furthermore, we examine the possibility of detecting faint line emitters visible only in the narrow-band image, but find no promising candidates. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_03362 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | JWST/NIRCam Narrowband Survey of Pa$β$ Emitters in the Spiderweb Protocluster at z=2.16 Shimakawa, Rhythm Perez-Martinez, J. M. Dannerbauer, Helmut Koyama, Yusei Kodama, Tadayuki Perez-Gonzalez, Pablo G. D'Eugenio, Chiara Zhang, Yuheng Naufal, Abdurrahman Daikuhara, Kazuki Astrophysics of Galaxies We report the initial result of our Pa$β$ narrowband imaging on a protocluster with the JWST Near Infrared Camera (NIRCam). As NIRCam enables deep narrowband imaging of rest-frame NIR lines at $z>1$, we target one of the most studied protoclusters, the Spiderweb protocluster at $z=2.16$, in which previous studies have confirmed more than a hundred member galaxies. The NIRCam F405N narrowband filter covers in Pa$β$ line the protocluster redshift given by known protocluster members, allowing the search for new member candidates. The weight-corrected color-magnitude diagram obtained 57 sources showing narrowband excesses, 41 of which satisfy further color selection criteria for limiting the sample to Pa$β$ emitter candidates at $z\sim2.16$, and 24 of them do not have H$α$ emitter counterparts. The Pa$β$ emitter candidates appear to follow the spatial distribution of known protocluster members; however, follow-up spectroscopic confirmation is required. Only 17 out of 58 known H$α$-emitting cluster members are selected as Pa$β$ emitters in the current data, albeit the rest fall out of the narrowband selection owing to their small Pa$β$ equivalent widths. We derive Pa$β$ luminosity function in the Spiderweb protocluster, showing a normalization density of $\log{ϕ^\ast}=-2.53\pm0.15$ at a characteristic Pa$β$ luminosity of $\log{L^\ast}=42.33\pm0.17$. Furthermore, we examine the possibility of detecting faint line emitters visible only in the narrow-band image, but find no promising candidates. |
| title | JWST/NIRCam Narrowband Survey of Pa$β$ Emitters in the Spiderweb Protocluster at z=2.16 |
| topic | Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2410.03362 |