Dusty waves on a starry sea: The mid-infrared view of M31

P. Barmby, M. L N Ashby, L. Bianchi, C. W. Engelbracht, R. D. Gehrz, K. D. Gordon, J. L. Hinz, J. P. Huchra, R. M. Humphreys, M. A. Pahre, P. G. Pérez-González, E. F. Polomski, George H. Rieke, D. A. Thilker, S. P. Willner, C. E. Woodward

Research output: Contribution to journalArticle

90 Citations (Scopus)

Abstract

Mid-infrared observations of the Andromeda galaxy, M31, obtained with the Infrared Array Camera on board the Spitzer Space Telescope are presented. The image mosaics cover areas of approximately 3.°7 × 1.°6 and include the satellite galaxies M32 and NGC 205. The appearance of M31 varies dramatically in the different mid-infrared bands, from the smooth bulge and disk of the old stellar population seen at 3.6 μm to the well-known "10 kpc ring" dominating the 8 μm image. The similarity of the 3.6 μm and optical isophotes and the nearly constant optical-mid-infrared color over the inner 400'' confirm that there is no significant extinction at optical wavelengths in M31's bulge. The nuclear colors indicate the presence of dust but not an infrared-bright active galactic nucleus. The integrated 8 μm nonstellar luminosity implies a star formation rate of 0.4 Modot; yr-1, consistent with other indicators that show M31 to be a quiescent galaxy.

Original languageEnglish (US)
JournalAstrophysical Journal
Volume650
Issue number1 II
DOIs
StatePublished - Oct 10 2006

Fingerprint

Andromeda Galaxy
isophotes
galaxies
color
Space Infrared Telescope Facility
star formation rate
active galactic nuclei
extinction
dust
cameras
luminosity
wavelength
rings
wavelengths
sea
indicator
mosaic
rate

Keywords

  • Galaxies: individual (M31)
  • Galaxies: ISM
  • Galaxies: spiral
  • Galaxies: stellar content
  • Infrared: galaxies

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

Barmby, P., Ashby, M. L. N., Bianchi, L., Engelbracht, C. W., Gehrz, R. D., Gordon, K. D., ... Woodward, C. E. (2006). Dusty waves on a starry sea: The mid-infrared view of M31. Astrophysical Journal, 650(1 II). https://doi.org/10.1086/508626

Dusty waves on a starry sea : The mid-infrared view of M31. / Barmby, P.; Ashby, M. L N; Bianchi, L.; Engelbracht, C. W.; Gehrz, R. D.; Gordon, K. D.; Hinz, J. L.; Huchra, J. P.; Humphreys, R. M.; Pahre, M. A.; Pérez-González, P. G.; Polomski, E. F.; Rieke, George H.; Thilker, D. A.; Willner, S. P.; Woodward, C. E.

In: Astrophysical Journal, Vol. 650, No. 1 II, 10.10.2006.

Research output: Contribution to journalArticle

Barmby, P, Ashby, MLN, Bianchi, L, Engelbracht, CW, Gehrz, RD, Gordon, KD, Hinz, JL, Huchra, JP, Humphreys, RM, Pahre, MA, Pérez-González, PG, Polomski, EF, Rieke, GH, Thilker, DA, Willner, SP & Woodward, CE 2006, 'Dusty waves on a starry sea: The mid-infrared view of M31', Astrophysical Journal, vol. 650, no. 1 II. https://doi.org/10.1086/508626
Barmby P, Ashby MLN, Bianchi L, Engelbracht CW, Gehrz RD, Gordon KD et al. Dusty waves on a starry sea: The mid-infrared view of M31. Astrophysical Journal. 2006 Oct 10;650(1 II). https://doi.org/10.1086/508626
Barmby, P. ; Ashby, M. L N ; Bianchi, L. ; Engelbracht, C. W. ; Gehrz, R. D. ; Gordon, K. D. ; Hinz, J. L. ; Huchra, J. P. ; Humphreys, R. M. ; Pahre, M. A. ; Pérez-González, P. G. ; Polomski, E. F. ; Rieke, George H. ; Thilker, D. A. ; Willner, S. P. ; Woodward, C. E. / Dusty waves on a starry sea : The mid-infrared view of M31. In: Astrophysical Journal. 2006 ; Vol. 650, No. 1 II.
@article{98e894ac541845a5b1ad101c572a60b6,
title = "Dusty waves on a starry sea: The mid-infrared view of M31",
abstract = "Mid-infrared observations of the Andromeda galaxy, M31, obtained with the Infrared Array Camera on board the Spitzer Space Telescope are presented. The image mosaics cover areas of approximately 3.°7 × 1.°6 and include the satellite galaxies M32 and NGC 205. The appearance of M31 varies dramatically in the different mid-infrared bands, from the smooth bulge and disk of the old stellar population seen at 3.6 μm to the well-known {"}10 kpc ring{"} dominating the 8 μm image. The similarity of the 3.6 μm and optical isophotes and the nearly constant optical-mid-infrared color over the inner 400'' confirm that there is no significant extinction at optical wavelengths in M31's bulge. The nuclear colors indicate the presence of dust but not an infrared-bright active galactic nucleus. The integrated 8 μm nonstellar luminosity implies a star formation rate of 0.4 Modot; yr-1, consistent with other indicators that show M31 to be a quiescent galaxy.",
keywords = "Galaxies: individual (M31), Galaxies: ISM, Galaxies: spiral, Galaxies: stellar content, Infrared: galaxies",
author = "P. Barmby and Ashby, {M. L N} and L. Bianchi and Engelbracht, {C. W.} and Gehrz, {R. D.} and Gordon, {K. D.} and Hinz, {J. L.} and Huchra, {J. P.} and Humphreys, {R. M.} and Pahre, {M. A.} and P{\'e}rez-Gonz{\'a}lez, {P. G.} and Polomski, {E. F.} and Rieke, {George H.} and Thilker, {D. A.} and Willner, {S. P.} and Woodward, {C. E.}",
year = "2006",
month = "10",
day = "10",
doi = "10.1086/508626",
language = "English (US)",
volume = "650",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "IOP Publishing Ltd.",
number = "1 II",

}

TY - JOUR

T1 - Dusty waves on a starry sea

T2 - The mid-infrared view of M31

AU - Barmby, P.

AU - Ashby, M. L N

AU - Bianchi, L.

AU - Engelbracht, C. W.

AU - Gehrz, R. D.

AU - Gordon, K. D.

AU - Hinz, J. L.

AU - Huchra, J. P.

AU - Humphreys, R. M.

AU - Pahre, M. A.

AU - Pérez-González, P. G.

AU - Polomski, E. F.

AU - Rieke, George H.

AU - Thilker, D. A.

AU - Willner, S. P.

AU - Woodward, C. E.

PY - 2006/10/10

Y1 - 2006/10/10

N2 - Mid-infrared observations of the Andromeda galaxy, M31, obtained with the Infrared Array Camera on board the Spitzer Space Telescope are presented. The image mosaics cover areas of approximately 3.°7 × 1.°6 and include the satellite galaxies M32 and NGC 205. The appearance of M31 varies dramatically in the different mid-infrared bands, from the smooth bulge and disk of the old stellar population seen at 3.6 μm to the well-known "10 kpc ring" dominating the 8 μm image. The similarity of the 3.6 μm and optical isophotes and the nearly constant optical-mid-infrared color over the inner 400'' confirm that there is no significant extinction at optical wavelengths in M31's bulge. The nuclear colors indicate the presence of dust but not an infrared-bright active galactic nucleus. The integrated 8 μm nonstellar luminosity implies a star formation rate of 0.4 Modot; yr-1, consistent with other indicators that show M31 to be a quiescent galaxy.

AB - Mid-infrared observations of the Andromeda galaxy, M31, obtained with the Infrared Array Camera on board the Spitzer Space Telescope are presented. The image mosaics cover areas of approximately 3.°7 × 1.°6 and include the satellite galaxies M32 and NGC 205. The appearance of M31 varies dramatically in the different mid-infrared bands, from the smooth bulge and disk of the old stellar population seen at 3.6 μm to the well-known "10 kpc ring" dominating the 8 μm image. The similarity of the 3.6 μm and optical isophotes and the nearly constant optical-mid-infrared color over the inner 400'' confirm that there is no significant extinction at optical wavelengths in M31's bulge. The nuclear colors indicate the presence of dust but not an infrared-bright active galactic nucleus. The integrated 8 μm nonstellar luminosity implies a star formation rate of 0.4 Modot; yr-1, consistent with other indicators that show M31 to be a quiescent galaxy.

KW - Galaxies: individual (M31)

KW - Galaxies: ISM

KW - Galaxies: spiral

KW - Galaxies: stellar content

KW - Infrared: galaxies

UR - http://www.scopus.com/inward/record.url?scp=33751429047&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33751429047&partnerID=8YFLogxK

U2 - 10.1086/508626

DO - 10.1086/508626

M3 - Article

AN - SCOPUS:33751429047

VL - 650

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

IS - 1 II

ER -