The 50 Mpc Galaxy Catalog (50 MGC): Consistent and Homogeneous Masses, Distances, Colors, and Morphologies
We assemble a catalog of 15424 nearby galaxies within 50 Mpc with consistent and homogenized mass, distance, and morphological type measurements. Our catalog combines galaxies from HyperLeda, the NASA-Sloan Atlas, and the Catalog of Local Volume Galaxies. Distances for the galaxies combine best-esti...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2023-01-01
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| Series: | The Astronomical Journal |
| Subjects: | |
| Online Access: | https://doi.org/10.3847/1538-3881/acf7bc |
| _version_ | 1797382460867084288 |
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| author | David Ohlson Anil C. Seth Elena Gallo Vivienne F. Baldassare Jenny E. Greene |
| author_facet | David Ohlson Anil C. Seth Elena Gallo Vivienne F. Baldassare Jenny E. Greene |
| author_sort | David Ohlson |
| collection | DOAJ |
| description | We assemble a catalog of 15424 nearby galaxies within 50 Mpc with consistent and homogenized mass, distance, and morphological type measurements. Our catalog combines galaxies from HyperLeda, the NASA-Sloan Atlas, and the Catalog of Local Volume Galaxies. Distances for the galaxies combine best-estimates for flow-corrected redshift-based distances with redshift-independent distances. We also compile magnitude and color information for 11740 galaxies. We use the galaxy colors to estimate masses by creating self-consistent color—mass-to-light ratio relations in four bands; we also provide color transformations of all colors into Sloan g – i by using galaxies with overlapping color information. We compile morphology information for 13744 galaxies, and use the galaxy color information to separate early- and late-type galaxies. This catalog is widely applicable for studies of nearby galaxies and for placing these studies in the context of more distant galaxies. We present one application here: a preliminary analysis of the nuclear X-ray activity of galaxies. Out of 1506 galaxies within the sample that have available Chandra X-ray observations, we find that 291 have detected nuclear sources. Of the 291 existing Chandra detections, 249 have log( L _X ) > 38.3 and available stellar mass estimates. We find that the X-ray active fractions in early-type galaxies are higher than in late-type galaxies, especially for galaxy stellar masses between 10 ^9 and 10 ^10.5 M _⊙ . We show that these differences may be due at least in part to the increased astrometric uncertainties in late-type galaxies relative to early types. |
| first_indexed | 2024-03-08T21:06:40Z |
| format | Article |
| id | doaj.art-9f868281b3da45dead804ee3e17c3c22 |
| institution | Directory Open Access Journal |
| issn | 1538-3881 |
| language | English |
| last_indexed | 2024-03-08T21:06:40Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astronomical Journal |
| spelling | doaj.art-9f868281b3da45dead804ee3e17c3c222023-12-22T13:00:51ZengIOP PublishingThe Astronomical Journal1538-38812023-01-0116713110.3847/1538-3881/acf7bcThe 50 Mpc Galaxy Catalog (50 MGC): Consistent and Homogeneous Masses, Distances, Colors, and MorphologiesDavid Ohlson0https://orcid.org/0009-0004-9457-2495Anil C. Seth1https://orcid.org/0000-0003-0248-5470Elena Gallo2https://orcid.org/0000-0001-5802-6041Vivienne F. Baldassare3https://orcid.org/0000-0003-4703-7276Jenny E. Greene4https://orcid.org/0000-0002-5612-3427University of Utah , 201 James Fletcher Building 115 S. 1400 E. Salt Lake City, UT 84112, USA ; david.ohlson@utah.eduUniversity of Utah , 201 James Fletcher Building 115 S. 1400 E. Salt Lake City, UT 84112, USA ; david.ohlson@utah.eduUniversity of Michigan , USAWashington State University , USAPrinceton University , USAWe assemble a catalog of 15424 nearby galaxies within 50 Mpc with consistent and homogenized mass, distance, and morphological type measurements. Our catalog combines galaxies from HyperLeda, the NASA-Sloan Atlas, and the Catalog of Local Volume Galaxies. Distances for the galaxies combine best-estimates for flow-corrected redshift-based distances with redshift-independent distances. We also compile magnitude and color information for 11740 galaxies. We use the galaxy colors to estimate masses by creating self-consistent color—mass-to-light ratio relations in four bands; we also provide color transformations of all colors into Sloan g – i by using galaxies with overlapping color information. We compile morphology information for 13744 galaxies, and use the galaxy color information to separate early- and late-type galaxies. This catalog is widely applicable for studies of nearby galaxies and for placing these studies in the context of more distant galaxies. We present one application here: a preliminary analysis of the nuclear X-ray activity of galaxies. Out of 1506 galaxies within the sample that have available Chandra X-ray observations, we find that 291 have detected nuclear sources. Of the 291 existing Chandra detections, 249 have log( L _X ) > 38.3 and available stellar mass estimates. We find that the X-ray active fractions in early-type galaxies are higher than in late-type galaxies, especially for galaxy stellar masses between 10 ^9 and 10 ^10.5 M _⊙ . We show that these differences may be due at least in part to the increased astrometric uncertainties in late-type galaxies relative to early types.https://doi.org/10.3847/1538-3881/acf7bcAGN host galaxiesCatalogsX-ray sourcesSupermassive black holesDwarf galaxiesGalaxies |
| spellingShingle | David Ohlson Anil C. Seth Elena Gallo Vivienne F. Baldassare Jenny E. Greene The 50 Mpc Galaxy Catalog (50 MGC): Consistent and Homogeneous Masses, Distances, Colors, and Morphologies The Astronomical Journal AGN host galaxies Catalogs X-ray sources Supermassive black holes Dwarf galaxies Galaxies |
| title | The 50 Mpc Galaxy Catalog (50 MGC): Consistent and Homogeneous Masses, Distances, Colors, and Morphologies |
| title_full | The 50 Mpc Galaxy Catalog (50 MGC): Consistent and Homogeneous Masses, Distances, Colors, and Morphologies |
| title_fullStr | The 50 Mpc Galaxy Catalog (50 MGC): Consistent and Homogeneous Masses, Distances, Colors, and Morphologies |
| title_full_unstemmed | The 50 Mpc Galaxy Catalog (50 MGC): Consistent and Homogeneous Masses, Distances, Colors, and Morphologies |
| title_short | The 50 Mpc Galaxy Catalog (50 MGC): Consistent and Homogeneous Masses, Distances, Colors, and Morphologies |
| title_sort | 50 mpc galaxy catalog 50 mgc consistent and homogeneous masses distances colors and morphologies |
| topic | AGN host galaxies Catalogs X-ray sources Supermassive black holes Dwarf galaxies Galaxies |
| url | https://doi.org/10.3847/1538-3881/acf7bc |
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