16744( 2) - 30-Jul-2021 16:52:07 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 16744 Version: 2 Check-in Time: 30-Jul-2021 16:52:07 STScI Edit Number: 0 Title A Mira Distance to M101: Towards a Sub-3% Hubble Constant with Miras and a NIR Candle for JWST and Roman ------------------------------------------------------------------------------------ Type Cycle GO 29 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Caroline Huang Smithsonian Astrophysical Observatory Y CoI: Dr. Adam Riess The Johns Hopkins University N CoI: Dr. Nadia L Zakamska The Johns Hopkins University N CoI: Dr. Wenlong Yuan The Johns Hopkins University N CoI: Dr. Patricia A. Whitelock South African Astronomical Observatory N CoI: Dr. Stefano Casertano Space Telescope Science Institute N CoI: Prof. Lucas M. Macri Texas A & M University N CoI: Dr. Margarita Karovska Smithsonian Institution Astrophysical N Observatory ------------------------------------------------------------------------------------ Abstract The discrepancy between local measurements of the Hubble constant (H0) and the value inferred from observations of the CMB may be our strongest indication of physics beyond a Lambda-CDM cosmological model. Direct, distance-ladder measurements of the H0 rely primarily on Cepheids and the Tip of the Red Giant Branch (TRGB) to calibrate the luminosity of Type Ia supernovae (SN Ia). Here we propose an independent approach using Mira variables. Miras can check existing Cepheid and TRGB measurements while extending the distance ladder in the era of infrared space missions such as JWST and Roman Space Telescope, which will have difficulty discovering Cepheids. Miras are pulsating variable stars that follow tight (~0.12 mag scatter) Period-Luminosity Relations (PLRs) in the near-infrared (NIR). Short-period Miras (P < 400 d) have NIR luminosities up to 2 mag brighter than TRGB and are a ubiquitous older population that have already been used to calibrate H0 with 5% uncertainty. Long-period Miras (P > 400 d) are highly luminous and follow a different PLR from short-period Miras. We will (1) obtain a new distance measurement to this galaxy using short-period Miras, resulting in a sub-3% calibration of H0 with Miras when combined with existing Mira-SN Ia hosts; (2) discover long- period Miras with HST for the first time; (3) cross-correlate long-period variables discovered in HST with Spitzer IR observations. To do this, we propose to obtain 5 epochs of near-infrared observation in M101, to study Miras in the field of SN Ia 2011fe. Combining these with archival observations of the late-time lightcurve of SN 2011fe results in ~10 epochs of observation with a baseline of ~3000 days. ------------------------------------------------------------------------------------ Observations Description ------------------------ We will obtain time-series observations of the field surrounding SN 2011fe--located in M101--using WFC3/IR F160W and WFC3/IR F110W to search for Mira variables. These will supplement the previous time-series observations of this field that were used to study the late-time lightcurve of SN 2011fe obtained with the same filters to create a long baseline. ------------------------------------------------------------------------------------ 16744( 2) - 30-Jul-2021 16:52:07 - [ 2] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 SN-2011FE GALAXY, SPIRAL RA=14H03M5.7110S, J2000 V = 10.06 DEC=+54D16'25.22" Reference Frame: Other: SIMBAD Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2015.5 0.0 0.0 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 16744( 2) - 30-Jul-2021 16:52:07 - [ 3] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 Primary_Pattern Secondary_Pattern Pattern_Type WFC3-IR-DITHER-BOX-MIN Pattern_Purpose DITHER Number_Of_Points 4 Point_Spacing 0.572 Line_Spacing 0.365 Coordinate_Frame POS-TARG Pattern_Orient 18.528 Angle_Between_Sides 74.653 Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ 16744( 2) - 30-Jul-2021 16:52:07 - [ 4] Visit: 01 (Visit 1) Visit Requirements: AFTER 01-OCT-2021:00:00:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 SN-2011FE WFC3/IR MULTIAC IR-FIX F160W SAMP-SEQ=SPARS25, NSAMP=14 1 DEF PATTERN 1 1-2 CUM (1311.756 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 SN-2011FE WFC3/IR MULTIAC IR-FIX F110W SAMP-SEQ=SPARS50, NSAMP=7 1 DEF CUM (1211.74 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ SN-2011FE 1 WFC3/IR MULTIAC IR-FIX F160W 1 none none none 1 N/A CUM SN-2011FE 1 WFC3/IR MULTIAC IR-FIX F160W 2 none none none 1 N/A CUM SN-2011FE 1 WFC3/IR MULTIAC IR-FIX F160W 3 none none none 1 N/A CUM SN-2011FE 1 WFC3/IR MULTIAC IR-FIX F160W 4 none none none 1 N/A CUM SN-2011FE 2 WFC3/IR MULTIAC IR-FIX F110W 1 none none none 1 N/A CUM SN-2011FE 2 WFC3/IR MULTIAC IR-FIX F110W 2 none none none 1 N/A CUM SN-2011FE 2 WFC3/IR MULTIAC IR-FIX F110W 3 none none none 1 N/A CUM SN-2011FE 2 WFC3/IR MULTIAC IR-FIX F110W 4 none none none 1 N/A CUM 16744( 2) - 30-Jul-2021 16:52:07 - [ 5] Visit: 02 (Visit 2) Visit Requirements: AFTER 01 BY 20 D TO 40 D On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 SN-2011FE WFC3/IR MULTIAC IR-FIX F160W SAMP-SEQ=SPARS25, NSAMP=14 1 DEF PATTERN 1 1-2 CUM (1311.756 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 SN-2011FE WFC3/IR MULTIAC IR-FIX F110W SAMP-SEQ=SPARS50, NSAMP=7 1 DEF CUM (1211.74 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ SN-2011FE 1 WFC3/IR MULTIAC IR-FIX F160W 1 none none none 1 N/A CUM SN-2011FE 1 WFC3/IR MULTIAC IR-FIX F160W 2 none none none 1 N/A CUM SN-2011FE 1 WFC3/IR MULTIAC IR-FIX F160W 3 none none none 1 N/A CUM SN-2011FE 1 WFC3/IR MULTIAC IR-FIX F160W 4 none none none 1 N/A CUM SN-2011FE 2 WFC3/IR MULTIAC IR-FIX F110W 1 none none none 1 N/A CUM SN-2011FE 2 WFC3/IR MULTIAC IR-FIX F110W 2 none none none 1 N/A CUM SN-2011FE 2 WFC3/IR MULTIAC IR-FIX F110W 3 none none none 1 N/A CUM SN-2011FE 2 WFC3/IR MULTIAC IR-FIX F110W 4 none none none 1 N/A CUM 16744( 2) - 30-Jul-2021 16:52:07 - [ 6] Visit: 03 (Visit 3) Visit Requirements: AFTER 02 BY 30 D TO 50 D On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 SN-2011FE WFC3/IR MULTIAC IR-FIX F160W SAMP-SEQ=SPARS25, NSAMP=14 1 DEF PATTERN 1 1-2 CUM (1311.756 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 SN-2011FE WFC3/IR MULTIAC IR-FIX F110W NSAMP=7, SAMP-SEQ=SPARS50 1 DEF CUM (1211.74 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ SN-2011FE 1 WFC3/IR MULTIAC IR-FIX F160W 1 none none none 1 N/A CUM SN-2011FE 1 WFC3/IR MULTIAC IR-FIX F160W 2 none none none 1 N/A CUM SN-2011FE 1 WFC3/IR MULTIAC IR-FIX F160W 3 none none none 1 N/A CUM SN-2011FE 1 WFC3/IR MULTIAC IR-FIX F160W 4 none none none 1 N/A CUM SN-2011FE 2 WFC3/IR MULTIAC IR-FIX F110W 1 none none none 1 N/A CUM SN-2011FE 2 WFC3/IR MULTIAC IR-FIX F110W 2 none none none 1 N/A CUM SN-2011FE 2 WFC3/IR MULTIAC IR-FIX F110W 3 none none none 1 N/A CUM SN-2011FE 2 WFC3/IR MULTIAC IR-FIX F110W 4 none none none 1 N/A CUM 16744( 2) - 30-Jul-2021 16:52:07 - [ 7] Visit: 04 (Visit 4) Visit Requirements: AFTER 03 BY 65 D TO 85 D On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 SN-2011FE WFC3/IR MULTIAC IR-FIX F160W SAMP-SEQ=SPARS25, NSAMP=14 1 DEF PATTERN 1 1-2 CUM (1311.756 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 SN-2011FE WFC3/IR MULTIAC IR-FIX F110W NSAMP=7, SAMP-SEQ=SPARS50 1 DEF CUM (1211.74 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ SN-2011FE 1 WFC3/IR MULTIAC IR-FIX F160W 1 none none none 1 N/A CUM SN-2011FE 1 WFC3/IR MULTIAC IR-FIX F160W 2 none none none 1 N/A CUM SN-2011FE 1 WFC3/IR MULTIAC IR-FIX F160W 3 none none none 1 N/A CUM SN-2011FE 1 WFC3/IR MULTIAC IR-FIX F160W 4 none none none 1 N/A CUM SN-2011FE 2 WFC3/IR MULTIAC IR-FIX F110W 1 none none none 1 N/A CUM SN-2011FE 2 WFC3/IR MULTIAC IR-FIX F110W 2 none none none 1 N/A CUM SN-2011FE 2 WFC3/IR MULTIAC IR-FIX F110W 3 none none none 1 N/A CUM SN-2011FE 2 WFC3/IR MULTIAC IR-FIX F110W 4 none none none 1 N/A CUM 16744( 2) - 30-Jul-2021 16:52:07 - [ 8] Visit: 05 (Visit 5) Visit Requirements: AFTER 04 BY 110 D TO 130 D On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 SN-2011FE WFC3/IR MULTIAC IR-FIX F160W SAMP-SEQ=SPARS25, NSAMP=14 1 DEF PATTERN 1 1-2 CUM (1311.756 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 SN-2011FE WFC3/IR MULTIAC IR-FIX F110W NSAMP=7, SAMP-SEQ=SPARS50 1 DEF CUM (1211.74 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ SN-2011FE 1 WFC3/IR MULTIAC IR-FIX F160W 1 none none none 1 N/A CUM SN-2011FE 1 WFC3/IR MULTIAC IR-FIX F160W 2 none none none 1 N/A CUM SN-2011FE 1 WFC3/IR MULTIAC IR-FIX F160W 3 none none none 1 N/A CUM SN-2011FE 1 WFC3/IR MULTIAC IR-FIX F160W 4 none none none 1 N/A CUM SN-2011FE 2 WFC3/IR MULTIAC IR-FIX F110W 1 none none none 1 N/A CUM SN-2011FE 2 WFC3/IR MULTIAC IR-FIX F110W 2 none none none 1 N/A CUM SN-2011FE 2 WFC3/IR MULTIAC IR-FIX F110W 3 none none none 1 N/A CUM SN-2011FE 2 WFC3/IR MULTIAC IR-FIX F110W 4 none none none 1 N/A CUM 16744( 2) - 30-Jul-2021 16:52:07 - [ 9] Summary Form for Proposal 16744 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures IR-FIX ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFC3/IR ------------------------------------------------------------------------------------------------------------------------------------ Opmodes MULTIACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters NSAMP=14, NSAMP=7, SAMP-SEQ=SPARS25, SAMP-SEQ=SPARS50 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements AFTER 01 BY 20 D TO 40 D, AFTER 02 BY 30 D TO 50 D, AFTER 03 BY 65 D TO 85 D, AFTER 04 BY 110 D TO 130 D, AFTER 01-OCT-2021:00:00:00, PATTERN 1 1-2 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F110W, F160W ------------------------------------------------------------------------------------------------------------------------------------ Target Names SN-2011FE ------------------------------------------------------------------------------------------------------------------------------------