North+Lone Star Supernova Host Survey. I. Local Host-galaxy Hα Surface Brightness and the Hubble Residuals of Type Ia Supernovae
We present optical integral field unit spectroscopy acquired with the George and Cynthia Mitchell Spectrograph on the Harlan J. Smith telescope at McDonald Observatory of 94 galaxies (0.01 < z < 0.058) that have hosted Type Ia supernovae (SNe Ia). We selected host galaxies with star-forming mo...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2025-01-01
|
| Series: | The Astrophysical Journal |
| Subjects: | |
| Online Access: | https://doi.org/10.3847/1538-4357/adc916 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849733756359802880 |
|---|---|
| author | Ann M. Isaacs Patrick L. Kelly J. Craig Wheeler |
| author_facet | Ann M. Isaacs Patrick L. Kelly J. Craig Wheeler |
| author_sort | Ann M. Isaacs |
| collection | DOAJ |
| description | We present optical integral field unit spectroscopy acquired with the George and Cynthia Mitchell Spectrograph on the Harlan J. Smith telescope at McDonald Observatory of 94 galaxies (0.01 < z < 0.058) that have hosted Type Ia supernovae (SNe Ia). We selected host galaxies with star-forming morphology, consistent with the criteria used by A. G. Riess et al. We measured the H α surface brightness (SB) of each host galaxy within 1 kpc of the location of the supernova. Using distances from the Pantheon+ sample, we find a step in Hubble residuals (HRs) compared to local H α SB of −0.097 ± 0.051 mag at 1.9 σ significance in a sample of 73 host galaxies, where SNe in environments with smaller H α SB are, on average, less luminous after correction for light-curve shape and color. Almost all of the SNe in our sample were discovered by targeted surveys. Using an independent sample primarily from the untargeted Nearby Supernova Factory survey, M. Rigault et al. found a step of 0.045 ± 0.029 mag where SNe in passive environments are instead brighter, which is in 2.4 σ tension with our measurement. M. Rigault et al. designated SNe Ia with comparatively small HRs (<−0.1) and faint local H α SB (<log _10 (H α SB/(erg ^−1 s ^−1 kpc ^2 )) = 38.32) as the M _2 population. SNe that would be classified as M _2 are less highly represented in our sample (7% versus 21%). When we include an additional 12 early-type galaxies, the number of M _2 SNe is almost doubled, although the tension with the HR step measured by M. Rigault et al. persists at 1.7 σ . |
| format | Article |
| id | doaj-art-334a25e2ad0b496eaf6272b7291d4785 |
| institution | DOAJ |
| issn | 1538-4357 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj-art-334a25e2ad0b496eaf6272b7291d47852025-08-20T03:07:58ZengIOP PublishingThe Astrophysical Journal1538-43572025-01-01985112210.3847/1538-4357/adc916North+Lone Star Supernova Host Survey. I. Local Host-galaxy Hα Surface Brightness and the Hubble Residuals of Type Ia SupernovaeAnn M. Isaacs0https://orcid.org/0009-0006-9538-4781Patrick L. Kelly1https://orcid.org/0000-0003-3142-997XJ. Craig Wheeler2https://orcid.org/0000-0003-1349-6538School of Physics and Astronomy, University of Minnesota , 116 Church Street SE, Minneapolis, MN 55455, USA ; isaac413@umn.eduSchool of Physics and Astronomy, University of Minnesota , 116 Church Street SE, Minneapolis, MN 55455, USA ; isaac413@umn.eduDepartment of Astronomy, University of Texas at Austin , Austin, TX 78712, USAWe present optical integral field unit spectroscopy acquired with the George and Cynthia Mitchell Spectrograph on the Harlan J. Smith telescope at McDonald Observatory of 94 galaxies (0.01 < z < 0.058) that have hosted Type Ia supernovae (SNe Ia). We selected host galaxies with star-forming morphology, consistent with the criteria used by A. G. Riess et al. We measured the H α surface brightness (SB) of each host galaxy within 1 kpc of the location of the supernova. Using distances from the Pantheon+ sample, we find a step in Hubble residuals (HRs) compared to local H α SB of −0.097 ± 0.051 mag at 1.9 σ significance in a sample of 73 host galaxies, where SNe in environments with smaller H α SB are, on average, less luminous after correction for light-curve shape and color. Almost all of the SNe in our sample were discovered by targeted surveys. Using an independent sample primarily from the untargeted Nearby Supernova Factory survey, M. Rigault et al. found a step of 0.045 ± 0.029 mag where SNe in passive environments are instead brighter, which is in 2.4 σ tension with our measurement. M. Rigault et al. designated SNe Ia with comparatively small HRs (<−0.1) and faint local H α SB (<log _10 (H α SB/(erg ^−1 s ^−1 kpc ^2 )) = 38.32) as the M _2 population. SNe that would be classified as M _2 are less highly represented in our sample (7% versus 21%). When we include an additional 12 early-type galaxies, the number of M _2 SNe is almost doubled, although the tension with the HR step measured by M. Rigault et al. persists at 1.7 σ .https://doi.org/10.3847/1538-4357/adc916Type Ia supernovaeCosmologyGalaxies |
| spellingShingle | Ann M. Isaacs Patrick L. Kelly J. Craig Wheeler North+Lone Star Supernova Host Survey. I. Local Host-galaxy Hα Surface Brightness and the Hubble Residuals of Type Ia Supernovae The Astrophysical Journal Type Ia supernovae Cosmology Galaxies |
| title | North+Lone Star Supernova Host Survey. I. Local Host-galaxy Hα Surface Brightness and the Hubble Residuals of Type Ia Supernovae |
| title_full | North+Lone Star Supernova Host Survey. I. Local Host-galaxy Hα Surface Brightness and the Hubble Residuals of Type Ia Supernovae |
| title_fullStr | North+Lone Star Supernova Host Survey. I. Local Host-galaxy Hα Surface Brightness and the Hubble Residuals of Type Ia Supernovae |
| title_full_unstemmed | North+Lone Star Supernova Host Survey. I. Local Host-galaxy Hα Surface Brightness and the Hubble Residuals of Type Ia Supernovae |
| title_short | North+Lone Star Supernova Host Survey. I. Local Host-galaxy Hα Surface Brightness and the Hubble Residuals of Type Ia Supernovae |
| title_sort | north lone star supernova host survey i local host galaxy hα surface brightness and the hubble residuals of type ia supernovae |
| topic | Type Ia supernovae Cosmology Galaxies |
| url | https://doi.org/10.3847/1538-4357/adc916 |
| work_keys_str_mv | AT annmisaacs northlonestarsupernovahostsurveyilocalhostgalaxyhasurfacebrightnessandthehubbleresidualsoftypeiasupernovae AT patricklkelly northlonestarsupernovahostsurveyilocalhostgalaxyhasurfacebrightnessandthehubbleresidualsoftypeiasupernovae AT jcraigwheeler northlonestarsupernovahostsurveyilocalhostgalaxyhasurfacebrightnessandthehubbleresidualsoftypeiasupernovae |