Difference between revisions of "ALFALFA and MaNGA"
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Here, I used the v1_2_0 version catalog of MaNGA "MaNGA_targets_extNSA_tiled.fits" and <math>\alpha</math>40 of ALFALFA.[http://arecibo.tc.cornell.edu/hiarchive/alfalfa/] | Here, I used the v1_2_0 version catalog of MaNGA "MaNGA_targets_extNSA_tiled.fits" and <math>\alpha</math>40 of ALFALFA.[http://arecibo.tc.cornell.edu/hiarchive/alfalfa/] | ||
I also supplemented the SDSS information to ALFALFA <math>\alpha</math>40 catalog through PhotoObjID. | I also supplemented the SDSS information to ALFALFA <math>\alpha</math>40 catalog through PhotoObjID. | ||
To match these two catalogs, I chosed "RA"&"DEC" in MaNGA catalog, and "ra"&"dec" given by SDSS which had been supplemented ALFALFA catalog. I did not use "RAdeg_OC" and "DECdeg_OC" in ALFALFA catalog because they are different with the SDSS ra & dec for the same PhotoObjID object. It could because that the SDSS catalog has changed the galaxy properties a little bit after DR7, ALFALFA might used the old value (DR7). | To match these two catalogs, I chosed "RA"&"DEC" in MaNGA catalog, and "ra"&"dec" given by SDSS which had been supplemented to ALFALFA catalog. I did not use "RAdeg_OC" and "DECdeg_OC" in the ALFALFA catalog because they are different with the SDSS ra & dec for the same PhotoObjID object. It could because that the SDSS catalog has changed the galaxy properties a little bit after DR7, ALFALFA might used the old value (DR7). | ||
*Download the combined catalogs: [[File:manga_alfalfa_sdssdr7.txt]] | |||
*I got 2300 matched sources within 3", the spatial distribution is as follows. | *I got 2300 matched sources within 3", the spatial distribution is as follows. | ||
[[File:spacedistrib_magalf. | [[File:spacedistrib_magalf.jpg]] | ||
*The stellar mass distribution | *The stellar mass distribution | ||
[[File: | [[File:Msdistrib_magalf.jpg]] | ||
*The redshift distribtuion | *The redshift distribtuion | ||
[[File:zdistrib_magalf. | [[File:zdistrib_magalf.jpg]] | ||
*The r-band petromag r90/r50 distribution | *The r-band petromag r90/r50 distribution | ||
[[File:r90r50distrib_magalf. | [[File:r90r50distrib_magalf.jpg]] | ||
Latest revision as of 09:13, 18 December 2014
Here, I used the v1_2_0 version catalog of MaNGA "MaNGA_targets_extNSA_tiled.fits" and 40 of ALFALFA.[1] I also supplemented the SDSS information to ALFALFA 40 catalog through PhotoObjID.
To match these two catalogs, I chosed "RA"&"DEC" in MaNGA catalog, and "ra"&"dec" given by SDSS which had been supplemented to ALFALFA catalog. I did not use "RAdeg_OC" and "DECdeg_OC" in the ALFALFA catalog because they are different with the SDSS ra & dec for the same PhotoObjID object. It could because that the SDSS catalog has changed the galaxy properties a little bit after DR7, ALFALFA might used the old value (DR7).
- Download the combined catalogs: File:Manga alfalfa sdssdr7.txt
- I got 2300 matched sources within 3", the spatial distribution is as follows.
- The stellar mass distribution
- The redshift distribtuion
- The r-band petromag r90/r50 distribution
