scholarly journals The New Local Group Galaxy Candidates Cas dSph, Peg dSph = And VI, and Cam A

1999 ◽  
Vol 192 ◽  
pp. 284-287 ◽  
Author(s):  
C. Gallart ◽  
D. Martínez-Delgado ◽  
A. Aparicio ◽  
W. L. Freedman
Keyword(s):  
Local Group ◽  
Star Forming ◽  
Andromeda Galaxy ◽  
Group Members ◽  
Group Galaxy ◽  
Local Group Galaxy

We present observations of the new Local Group galaxy candidates Cassiopeia dSph, Pegasus dSph = And VI and Camelopadalis A. Our deep color-magnitude diagrams show that the first two galaxies are certainly Local Group members, and likely dSph galaxies at a distance similar to that of the Andromeda galaxy. Cam A seems to be a star-forming galaxy situated considerably further away.

scholarly journals A bright, high rotation-measure FRB that skewers the M33 halo

2020 ◽  
Vol 499 (4) ◽  
pp. 4716-4724
Author(s):  
L Connor ◽  
J van Leeuwen ◽  
L C Oostrum ◽  
E Petroff ◽  
Y Maan ◽  
...  
Keyword(s):  
Local Group ◽  
Magnetized Plasma ◽  
Host Galaxy ◽  
Dispersion Measure ◽  
Spectral Structure ◽  
Rotation Measure ◽  
Andromeda Galaxy ◽  
Fast Radio Burst ◽  
Group Galaxy ◽  
Local Group Galaxy

ABSTRACT We report the detection of a bright fast radio burst, FRB 191108, with Apertif on the Westerbork Synthesis Radio Telescope. The interferometer allows us to localize the FRB to a narrow 5 arcsec × 7 arcmin ellipse by employing both multibeam information within the Apertif phased-array feed beam pattern, and across different tied-array beams. The resulting sightline passes close to Local Group galaxy M33, with an impact parameter of only 18 kpc with respect to the core. It also traverses the much larger circumgalactic medium (CGM) of M31, the Andromeda Galaxy. We find that the shared plasma of the Local Group galaxies could contribute ∼10 per cent of its dispersion measure of 588 pc cm−3. FRB 191108 has a Faraday rotation measure (RM) of +474 $\pm \, 3$ rad m−2, which is too large to be explained by either the Milky Way or the intergalactic medium. Based on the more moderate RMs of other extragalactic sources that traverse the halo of M33, we conclude that the dense magnetized plasma resides in the host galaxy. The FRB exhibits frequency structure on two scales, one that is consistent with quenched Galactic scintillation and broader spectral structure with Δν ≈ 40 MHz. If the latter is due to scattering in the shared M33/M31 CGM, our results constrain the Local Group plasma environment. We found no accompanying persistent radio sources in the Apertif imaging survey data.

UGC-A86 - A local group galaxy candidate

1991 ◽  
Vol 101 ◽  
pp. 465 ◽  
Author(s):  
A. Saha ◽  
John G. Hoessel
Keyword(s):  
Local Group ◽  
Group Galaxy ◽  
Local Group Galaxy

Is LGS 2 a Local Group galaxy

1981 ◽  
Vol 93 ◽  
pp. 35 ◽  
Author(s):  
S. van den Bergh ◽  
R. Racine
Keyword(s):  
Local Group ◽  
Group Galaxy ◽  
Local Group Galaxy

XMM-Newton survey of the Local Group galaxy M 33 – catalogue results and global properties

2005 ◽  
Vol 1 (S230) ◽  
pp. 160-161
Author(s):  
Z. Misanovic ◽  
W. Pietsch ◽  
F. Haberl ◽  
M. Ehle ◽  
D. Hatzidimitriou ◽  
...  
Keyword(s):  
Local Group ◽  
Global Properties ◽  
Group Galaxy ◽  
Local Group Galaxy

scholarly journals XMM-Newton survey of the Local Group galaxy M 33

2004 ◽  
Vol 426 (1) ◽  
pp. 11-24 ◽  
Author(s):  
W. Pietsch ◽  
Z. Misanovic ◽  
F. Haberl ◽  
D. Hatzidimitriou ◽  
M. Ehle ◽  
...  
Keyword(s):  
Local Group ◽  
Group Galaxy ◽  
Local Group Galaxy

scholarly journals B-supergiants in IC1613: testing low-Z massive star physics and evolution

2016 ◽  
Vol 12 (S329) ◽  
pp. 389-389
Author(s):  
Inés Camacho ◽  
Miriam García ◽  
Miguel A. Urbaneja ◽  
Artemio Herrero
Keyword(s):  
Massive Star ◽  
Local Group ◽  
Uv Spectroscopy ◽  
Physical Parameters ◽  
Physical Processes ◽  
Life And Death ◽  
The Galaxy ◽  
Nearby Galaxies ◽  
Group Galaxy ◽  
Local Group Galaxy

AbstractThe physical processes taking place in massive stars during their life and death are highly dependent on the metallicity (Z) of their parent cloud. Observations of these stars in low-Z nearby galaxies are crucial to understand these processes. IC1613 is the nearest Local Group galaxy with ongoing star formation and O-abundance lower than the SMC, although UV spectroscopy suggests it is not so metal poor. We performed a spectral analysis of early B-type stars in the galaxy, obtaining physical parameters and abundances. Our results confirm the low O-abundance of IC1613.

New Cepheid distances to nearby galaxies based on BVRI CCD photometry. II - The local group galaxy M33

1991 ◽  
Vol 372 ◽  
pp. 455 ◽  
Author(s):  
Wendy L. Freedman ◽  
Christine D. Wilson ◽  
Barry F. Madore
Keyword(s):  
Local Group ◽  
Ccd Photometry ◽  
Nearby Galaxies ◽  
Group Galaxy ◽  
Local Group Galaxy

scholarly journals Chemical and Photometric Evolution of the Local Group Galaxy NGC 6822 in a Cosmological Context

2006 ◽  
Vol 644 (2) ◽  
pp. 924-939 ◽  
Author(s):  
Leticia Carigi ◽  
Pedro Colin ◽  
Manuel Peimbert
Keyword(s):  
Local Group ◽  
Cosmological Context ◽  
Ngc 6822 ◽  
Group Galaxy ◽  
Local Group Galaxy
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