The Tip of the red giant branch distance to the perfect spiral galaxy M74 hosting three core-collapse supernovae
Creators
- 1. Astronomy Program, Department of Physics and Astronomy, Seoul National University, Gwanak-gu, Seoul 151-742 (Korea, Republic of)
Description
M74 (NGC 628) is a famous face-on spiral galaxy, hosting three core-collapse supernovae (SNe): SN Ic 2002ap, SN II-P 2003gd, and SN II-P 2013ej. However, its distance is not well known. We present a distance estimation for this galaxy based on the Tip of the Red Giant Branch (TRGB) method. We obtain photometry of the resolved stars in the arm-free region of M74 from F555W and F814W images in the Hubble Space Telescope archive. The color-magnitude diagram of the resolved stars shows a dominant red giant branch (RGB) as well as blue main sequence stars, red helium burning stars, and asymptotic giant branch stars. The I-band luminosity function of the RGB stars shows the TRGB to be at I TRGB = 26.13 ± 0.03 mag, and T RGB = 25.97 ± 0.03. From this, we derive the distance modulus to M74 to be 30.04 ± 0.04 (random) ± 0.12 (systematic) (corresponding to a linear distance of 10.19 ± 0.14 ± 0.56 Mpc). With this distance estimate, we calibrate the standardized candle method for SNe II-P. From the absolute magnitudes of SN 2003gd, we derive a value of the Hubble constant, H 0 = 72 ± 6 (random) ± 7 (systematic) km s–1 Mpc–1. It is similar to recent estimates based on the luminosity calibration of Type Ia supernovae.
Availability note (English)
Available from http://dx.doi.org/10.1088/0004-637X/792/1/52Additional details
Identifiers
Publishing Information
- Journal Title
- Astrophysical Journal
- Journal Volume
- 792
- Journal Issue
- 1
- Journal Page Range
- [6 p.]
- ISSN
- 0004-637X
- CODEN
- ASJOAB
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 46070518
- Subject category
- S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
- Descriptors DEI
- ASYMPTOTIC SOLUTIONS; CALIBRATION; COLOR; DISTANCE; GALAXIES; HELIUM BURNING; LUMINOSITY; MAIN SEQUENCE STARS; PHOTOMETRY; RANDOMNESS; RED SHIFT; SPACE; TELESCOPES; TYPE I SUPERNOVAE; TYPE II SUPERNOVAE
- Descriptors DEC
- BINARY STARS; ERUPTIVE VARIABLE STARS; MATHEMATICAL SOLUTIONS; OPTICAL PROPERTIES; ORGANOLEPTIC PROPERTIES; PHYSICAL PROPERTIES; STAR BURNING; STARS; SUPERNOVAE; VARIABLE STARS