Abstract
Line-intensity mapping is an emerging field of observational work, with strong potential to fit into a larger effort to probe large-scale structure and small-scale astrophysical phenomena using multiple complementary tracers. Taking full advantage of such complementarity means, in part, undertaking line-intensity surveys with galaxy surveys in mind. We consider the potential for detection of a cross-correlation signal between COMAP and blind surveys based on photometric redshifts (as in COSMOS) or based on spectroscopic data (as with the HETDEX survey of Lyα emitters). We find that obtaining accuracy in redshifts and 10 -4 sources per Mpc 3 with spectroscopic redshift determination should enable a CO-galaxy cross spectrum detection significance at least twice that of the CO auto spectrum. Either a future targeted spectroscopic survey or a blind survey like HETDEX may be able to meet both of these requirements.
| Original language | English (US) |
|---|---|
| Article number | 186 |
| Journal | Astrophysical Journal |
| Volume | 872 |
| Issue number | 2 |
| DOIs | |
| State | Published - Jan 1 2019 |
| Externally published | Yes |
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Keywords
- cosmology: theory
- galaxies: high-redshift
- galaxies: statistics
- radio lines: galaxies
ASJC Scopus subject areas
- Astronomy and Astrophysics
- Space and Planetary Science
Cite this
Cross-correlating Carbon Monoxide Line-intensity Maps with Spectroscopic and Photometric Galaxy Surveys. / Chung, Dongwoo T.; Viero, Marco P.; Church, Sarah E.; Wechsler, Risa H.; Alvarez, Marcelo A.; Bond, J. Richard; Breysse, Patrick C.; Cleary, Kieran A.; Eriksen, Hans K.; Foss, Marie K.; Gundersen, Joshua; Harper, Stuart E.; Ihle, Håvard T.; Keating, Laura C.; Murray, Norman; Padmanabhan, Hamsa; Stein, George F.; Wehus, Ingunn K.
In: Astrophysical Journal, Vol. 872, No. 2, 186, 01.01.2019.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Cross-correlating Carbon Monoxide Line-intensity Maps with Spectroscopic and Photometric Galaxy Surveys
AU - Chung, Dongwoo T.
AU - Viero, Marco P.
AU - Church, Sarah E.
AU - Wechsler, Risa H.
AU - Alvarez, Marcelo A.
AU - Bond, J. Richard
AU - Breysse, Patrick C.
AU - Cleary, Kieran A.
AU - Eriksen, Hans K.
AU - Foss, Marie K.
AU - Gundersen, Joshua
AU - Harper, Stuart E.
AU - Ihle, Håvard T.
AU - Keating, Laura C.
AU - Murray, Norman
AU - Padmanabhan, Hamsa
AU - Stein, George F.
AU - Wehus, Ingunn K.
PY - 2019/1/1
Y1 - 2019/1/1
N2 - Line-intensity mapping is an emerging field of observational work, with strong potential to fit into a larger effort to probe large-scale structure and small-scale astrophysical phenomena using multiple complementary tracers. Taking full advantage of such complementarity means, in part, undertaking line-intensity surveys with galaxy surveys in mind. We consider the potential for detection of a cross-correlation signal between COMAP and blind surveys based on photometric redshifts (as in COSMOS) or based on spectroscopic data (as with the HETDEX survey of Lyα emitters). We find that obtaining accuracy in redshifts and 10 -4 sources per Mpc 3 with spectroscopic redshift determination should enable a CO-galaxy cross spectrum detection significance at least twice that of the CO auto spectrum. Either a future targeted spectroscopic survey or a blind survey like HETDEX may be able to meet both of these requirements.
AB - Line-intensity mapping is an emerging field of observational work, with strong potential to fit into a larger effort to probe large-scale structure and small-scale astrophysical phenomena using multiple complementary tracers. Taking full advantage of such complementarity means, in part, undertaking line-intensity surveys with galaxy surveys in mind. We consider the potential for detection of a cross-correlation signal between COMAP and blind surveys based on photometric redshifts (as in COSMOS) or based on spectroscopic data (as with the HETDEX survey of Lyα emitters). We find that obtaining accuracy in redshifts and 10 -4 sources per Mpc 3 with spectroscopic redshift determination should enable a CO-galaxy cross spectrum detection significance at least twice that of the CO auto spectrum. Either a future targeted spectroscopic survey or a blind survey like HETDEX may be able to meet both of these requirements.
KW - cosmology: theory
KW - galaxies: high-redshift
KW - galaxies: statistics
KW - radio lines: galaxies
UR - http://www.scopus.com/inward/record.url?scp=85063466935&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85063466935&partnerID=8YFLogxK
U2 - 10.3847/1538-4357/ab0027
DO - 10.3847/1538-4357/ab0027
M3 - Article
AN - SCOPUS:85063466935
VL - 872
JO - Astrophysical Journal
JF - Astrophysical Journal
SN - 0004-637X
IS - 2
M1 - 186
ER -