SCUBADive II: Searching for $z>4$ Dust-Obscured Galaxies via F150W-Dropouts in COSMOS-Web
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866915532316344320 |
|---|---|
| author | Manning, Sinclaire M. McKinney, Jed Whitaker, Katherine E. Long, Arianna S. Cooper, Olivia R. Casey, Caitlin M. Arango-Toro, Rafael C. Champagne, Jaclyn B. Drakos, Nicole E. Faisst, Andreas L. Franco, Maximilien Gozaliasl, Ghassem Harish, Santosh Hatamnia, Hossein Hayward, Christopher C. Hirschmann, Michaela Kartaltepe, Jeyhan S. Koekemoer, Anton M. Liu, Daizhong Magdis, Georgios E. McCracken, Henry Joy Rhodes, Jason Robertson, Brant E. Talia, Margherita Valentino, Francesco Weaver, John R. Zavala, Jorge A. |
| author_facet | Manning, Sinclaire M. McKinney, Jed Whitaker, Katherine E. Long, Arianna S. Cooper, Olivia R. Casey, Caitlin M. Arango-Toro, Rafael C. Champagne, Jaclyn B. Drakos, Nicole E. Faisst, Andreas L. Franco, Maximilien Gozaliasl, Ghassem Harish, Santosh Hatamnia, Hossein Hayward, Christopher C. Hirschmann, Michaela Kartaltepe, Jeyhan S. Koekemoer, Anton M. Liu, Daizhong Magdis, Georgios E. McCracken, Henry Joy Rhodes, Jason Robertson, Brant E. Talia, Margherita Valentino, Francesco Weaver, John R. Zavala, Jorge A. |
| contents | The relative fraction of obscured galaxies at $z>4$ compared to lower redshifts remains highly uncertain as accurate bookkeeping of the dust-obscured component proves difficult. We address this shortcoming with SCUBADive, a compilation of the JWST counterparts of (sub-)millimeter galaxies in COSMOS-Web, in order to further analyze the distribution and properties of massive dust-obscured galaxies at early times. In this paper, we present a subset of SCUBADive, focusing on 60 ``dark'' galaxies that dropout at 1.5\micron. Motivated by JWST observations of AzTECC71, a far-infrared bright F150W-dropout with $z_{\rm phot}=5.7^{+0.8}_{-0.7}$, we complete a systematic search of F150W-dropouts with SCUBA-2 and ALMA detections to find more candidate high redshift dusty galaxies. Within our subsample, 16 are most similar to AzTECC71 due to fainter F444W magnitudes ($>24$\,mag) and lack of counterparts in COSMOS2020. Despite high star formation rates ($\langle$SFR$\rangle=450^{+920}_{-320}$\,\mdot\,yr$^{-1}$) and large stellar masses ($\langle$log$_{10}$(\mstar)$\rangle=11.2^{+0.5}_{-0.6}$\,\mdot) on average, these galaxies may not be particularly extreme for their presumed epochs according to offsets from the main sequence. We find that heavily obscured galaxies, which would be missed by pre-JWST optical imaging campaigns, comprise $\gtrsim20$\% of galaxies across mass bins and potentially contribute up to 60\% at the very high mass end (log$_{10}$(\mstar/\mdot)$>11.5$) of the $z>4$ stellar mass function. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_09703 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | SCUBADive II: Searching for $z>4$ Dust-Obscured Galaxies via F150W-Dropouts in COSMOS-Web Manning, Sinclaire M. McKinney, Jed Whitaker, Katherine E. Long, Arianna S. Cooper, Olivia R. Casey, Caitlin M. Arango-Toro, Rafael C. Champagne, Jaclyn B. Drakos, Nicole E. Faisst, Andreas L. Franco, Maximilien Gozaliasl, Ghassem Harish, Santosh Hatamnia, Hossein Hayward, Christopher C. Hirschmann, Michaela Kartaltepe, Jeyhan S. Koekemoer, Anton M. Liu, Daizhong Magdis, Georgios E. McCracken, Henry Joy Rhodes, Jason Robertson, Brant E. Talia, Margherita Valentino, Francesco Weaver, John R. Zavala, Jorge A. Astrophysics of Galaxies The relative fraction of obscured galaxies at $z>4$ compared to lower redshifts remains highly uncertain as accurate bookkeeping of the dust-obscured component proves difficult. We address this shortcoming with SCUBADive, a compilation of the JWST counterparts of (sub-)millimeter galaxies in COSMOS-Web, in order to further analyze the distribution and properties of massive dust-obscured galaxies at early times. In this paper, we present a subset of SCUBADive, focusing on 60 ``dark'' galaxies that dropout at 1.5\micron. Motivated by JWST observations of AzTECC71, a far-infrared bright F150W-dropout with $z_{\rm phot}=5.7^{+0.8}_{-0.7}$, we complete a systematic search of F150W-dropouts with SCUBA-2 and ALMA detections to find more candidate high redshift dusty galaxies. Within our subsample, 16 are most similar to AzTECC71 due to fainter F444W magnitudes ($>24$\,mag) and lack of counterparts in COSMOS2020. Despite high star formation rates ($\langle$SFR$\rangle=450^{+920}_{-320}$\,\mdot\,yr$^{-1}$) and large stellar masses ($\langle$log$_{10}$(\mstar)$\rangle=11.2^{+0.5}_{-0.6}$\,\mdot) on average, these galaxies may not be particularly extreme for their presumed epochs according to offsets from the main sequence. We find that heavily obscured galaxies, which would be missed by pre-JWST optical imaging campaigns, comprise $\gtrsim20$\% of galaxies across mass bins and potentially contribute up to 60\% at the very high mass end (log$_{10}$(\mstar/\mdot)$>11.5$) of the $z>4$ stellar mass function. |
| title | SCUBADive II: Searching for $z>4$ Dust-Obscured Galaxies via F150W-Dropouts in COSMOS-Web |
| topic | Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2505.09703 |