scholarly journals Hubble Space TelescopeImaging of Bipolar Nuclear Shells in the Disturbed Virgo Cluster Galaxy NGC 4438

2002 ◽  
Vol 567 (2) ◽  
pp. 865-874 ◽  
Author(s):  
Jeffrey D. P. Kenney ◽  
Elizabeth E. Yale
Keyword(s):  
Virgo Cluster ◽  
Cluster Galaxy ◽  
Nuclear Shells

scholarly journals Hot halo gas in the Virgo cluster galaxy NGC 4569

2001 ◽  
Vol 380 (1) ◽  
pp. 40-54 ◽  
Author(s):  
D. Tschöke ◽  
D. J. Bomans ◽  
G. Hensler ◽  
N. Junkes
Keyword(s):  
Virgo Cluster ◽  
Cluster Galaxy ◽  
Halo Gas

scholarly journals Planetary Nebulae and their parent stellar populations. Tracing the mass assembly of M87 and Intracluster light in the Virgo cluster core

2015 ◽  
Vol 11 (S317) ◽  
pp. 69-76
Author(s):  
Magda Arnaboldi ◽  
Alessia Longobardi ◽  
Ortwin Gerhard
Keyword(s):  
Planetary Nebulae ◽  
Major Axis ◽  
Large Magellanic Cloud ◽  
Virgo Cluster ◽  
Star Formation History ◽  
Cluster Core ◽  
Line Of Sight ◽  
Cluster Galaxy ◽  
Mass Assembly ◽  
Intracluster Light

AbstractThe diffuse extended outer regions of galaxies are hard to study because they are faint, with typical surface brightness of 1% of the dark night sky. We can tackle this problem by using resolved star tracers which remain visible at large distances from the galaxy centers. This article describes the use of Planetary Nebulae as tracers and the calibration of their properties as indicators of the star formation history, mean age and metallicity of the parent stars in the Milky Way and Local Group galaxies. We then report on the results from a deep, extended, planetary nebulae survey in a 0.5 deg2region centered on the brightest cluster galaxy NGC 4486 (M87) in the Virgo cluster core, carried out with SuprimeCam@Subaru and FLAMES-GIRAFFE@VLT. Two planetary nebulae populations are identified out to 150 kpc distance from the center of M87. One population is associated with the M87 halo and the second one with the intracluster light in the Virgo cluster core. They have different line-of-sight velocity and spatial distributions, as well as different planetary nebulae specific frequencies and luminosity functions. The intracluster planetary nebulae in the surveyed region correspond to a luminosity of four times the luminosity of the Large Magellanic Cloud. The M87 halo planetary nebulae trace an older, more metal-rich, parent stellar population. A substructure detected in the projected phase-space of the line-of-sight velocity vs. major axis distance for the M87 halo planetary nebulae provides evidence for the recent accretion event of a satellite galaxy with luminosity twice that of M33. The satellite stars were tidally stripped about 1 Gyr ago, and reached apocenter at a major axis distance of 60–90 kpc from the center of M87. The M87 halo is still growing significantly at the distances where the substructure is detected.

scholarly journals CHANG-ES. VII. MAGNETIC OUTFLOWS FROM THE VIRGO CLUSTER GALAXY NGC 4388

2016 ◽  
Vol 824 (1) ◽  
pp. 30 ◽  
Author(s):  
A. Damas-Segovia ◽  
R. Beck ◽  
B. Vollmer ◽  
T. Wiegert ◽  
M. Krause ◽  
...  
Keyword(s):  
Virgo Cluster ◽  
Cluster Galaxy

scholarly journals The halo of M49 and its environment as traced by planetary nebulae

2016 ◽  
Vol 12 (S323) ◽  
pp. 293-297
Author(s):  
Johanna Hartke ◽  
Magda Arnaboldi ◽  
Alessia Longobardi ◽  
Ortwin Gerhard ◽  
Ken Freeman ◽  
...  
Keyword(s):  
Morphological Variation ◽  
Luminosity Function ◽  
Narrow Band ◽  
Planetary Nebulae ◽  
Stellar Populations ◽  
Virgo Cluster ◽  
Cluster Galaxy ◽  
Outer Component ◽  
Stellar Halo ◽  
Galaxy Halo

AbstractWe investigate the stellar halo of the nearby elliptical Virgo-cluster galaxy M49 using Planetary Nebulae (PNe). M49 is the second-brightest galaxy of the Virgo cluster and is at the center of the Virgo subcluster B. We present an extended catalogue extracted from a narrow-band survey carried out with Subaru’s Suprime Cam, consisting of 735 PNe down to a limiting magnitude of m5007 = 29.3. This PNe population traces the halo out to 155 kpc from the galaxy’s center, which provides accurate measurement of the luminosity-specific PN-number (α-parameter) in the inner and outer regions of M49’s halo. We are also able to determine the morphological variation of the planetary nebulae luminosity function (PNLF), that may trace different parent stellar populations. This enables us to identify the transition from the PN-scarce, possibly metal-rich, galaxy halo to the PN-rich, metal-poor, outer component.

scholarly journals Spectacular tails of ionized gas in the Virgo cluster galaxy NGC 4569

2016 ◽  
Vol 587 ◽  
pp. A68 ◽  
Author(s):  
A. Boselli ◽  
J. C. Cuillandre ◽  
M. Fossati ◽  
S. Boissier ◽  
D. Bomans ◽  
...  
Keyword(s):  
Virgo Cluster ◽  
Ionized Gas ◽  
Cluster Galaxy

Distance to the Virgo cluster galaxy M100 from Hubble Space Telescope observations of Cepheids

Nature ◽  
1994 ◽  
Vol 371 (6500) ◽  
pp. 757-762 ◽  
Author(s):  
Wendy L. Freedman ◽  
Barry F. Madore ◽  
Jeremy R. Mould ◽  
Robert Hill ◽  
Laura Ferrarese ◽  
...  
Keyword(s):  
Hubble Space Telescope ◽  
Virgo Cluster ◽  
Cluster Galaxy ◽  
Space Telescope

The Gaseous Halo of the Virgo Cluster Galaxy NGC 4569

2003 ◽  
pp. 173-176
Author(s):  
Gerhard Hensler ◽  
Daniel Tschöke ◽  
Dominik Bomans ◽  
Alessandro Boselli
Keyword(s):  
Virgo Cluster ◽  
Cluster Galaxy ◽  
Gaseous Halo

TheHubble Space TelescopeKey Project on the Extragalactic Distance Scale. XX. The Discovery of Cepheids in the Virgo Cluster Galaxy NGC 4548

1999 ◽  
Vol 516 (2) ◽  
pp. 626-646 ◽  
Author(s):  
John A. Graham ◽  
Laura Ferrarese ◽  
Wendy L. Freedman ◽  
Robert C. Kennicutt, Jr. ◽  
Jeremy R. Mould ◽  
...  
Keyword(s):  
Virgo Cluster ◽  
Distance Scale ◽  
Cluster Galaxy ◽  
Extragalactic Distance Scale

scholarly journals Massive star population of the Virgo Cluster galaxy NGC4535

2018 ◽  
Vol 618 ◽  
pp. A185 ◽  
Author(s):  
Z. T. Spetsieri ◽  
A. Z. Bonanos ◽  
M. Kourniotis ◽  
M. Yang ◽  
S. Lianou ◽  
...  
Keyword(s):  
Massive Star ◽  
Absolute Magnitude ◽  
Virgo Cluster ◽  
Star Formation History ◽  
Wide Field ◽  
Absolute Deviation ◽  
Cluster Galaxy ◽  
Solar Metallicity ◽  
Red Supergiants ◽  
Candidate Variable

We analyzed the massive star population of the Virgo Cluster galaxy NGC 4535 using archival Hubble Space Telescope Wide Field Planetary Camera 2 images in filters F555W and F814W, equivalent to Johnson V and Kron-Cousins I. We performed high precision point spread function fitting photometry of 24353 sources including 3762 candidate blue supergiants, 841 candidate yellow supergiants, and 370 candidate red supergiants. We estimated the ratio of blue to red supergiants as a decreasing function of galactocentric radius. Using Modules for Experiments in Stellar Astrophysics (MESA) isochrones at solar metallicity, we defined the luminosity function and estimated the star formation history of the galaxy over the last 60 Myr. We conducted a variability search in the V and I filters using three variability indexes: the median absolute deviation, the interquartile range, and the inverse von-Neumann ratio. This analysis yielded 120 new variable candidates with absolute magnitudes ranging from MV = −4 to −11 mag. We used the MESA evolutionary tracks at solar metallicity to classify the variables based on their absolute magnitude and their position on the color-magnitude diagram. Among the new candidate variable sources are eight candidate variable red supergiants, three candidate variable yellow supergiants and one candidate luminous blue variable, which we suggest for follow-up observations.

scholarly journals ALMA Evidence for Ram Pressure Compression and Stripping of Molecular Gas in the Virgo Cluster Galaxy NGC 4402

2020 ◽  
Vol 901 (2) ◽  
pp. 95 ◽  
Author(s):  
Cramer W. J. ◽  
Kenney J. D. P. ◽  
Cortes J. R. ◽  
Cortes P. C. ◽  
Vlahakis C. ◽  
...  
Keyword(s):  
Virgo Cluster ◽  
Molecular Gas ◽  
Cluster Galaxy ◽  
Ram Pressure
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