Metallicity and Age of the Stellar Stream Around the Disk Galaxy NGC 5907

Laine, Seppo; Grillmair, Carl J.; Capak, P.; Arendt, Richard G.; Romanowsky, Aaron J.; Martínez–Delgado, David; Davies, James E.; Majewski, S.R.; Brodie, Jean P.; Gabany, R. Jay; Arnold, Jacob A.

doi:10.3847/0004-6256/152/3/72

Cited by 13 publications

(23 citation statements)

References 74 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Their evocative image, whose main features could be reproduced with an N-body model, has taken on an iconic status, serving as a powerful demonstration of the shredding of a small galaxy. 7 Some years later NGC 5907 was also observed by Laine et al (2016), who combined data from the Spitzer Space Telescope with optical Subaru images. These authors studied the part of the stream that was detected by Shang et al (1998) and do not comment on the second loop that was reported by M08.…”

mentioning

confidence: 98%

“…One of the best-known tidal features outside of the Local Group is the stellar stream associated with NGC 5907, an edge-on spiral galaxy with a stellar mass of ≈ 8 × 10 10 M (Laine et al 2016) at a distance of 17 Mpc (Tully, Courtois, & Sorce 2016). The stream was discovered by Shang et al (1998) and Zheng et al (1999), who detected sections of a loop around the disk of NGC 5907 using the Beijing Astronomical Observatory 0.6/0.9 m Schmidt telescope.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Dragonfly Imaging of the Galaxy NGC 5907: A Different View of the Iconic Stellar Stream

Dokkum

Gilhuly

Bonaca

et al. 2019

ApJL

View full text Add to dashboard Cite

In 2008 it was reported that the stellar stream of the edge-on spiral NGC 5907 loops twice around the galaxy, enveloping it in a giant corkscrew-like structure. Here we present imaging of this iconic object with the Dragonfly Telephoto Array, reaching a 1σ surface brightness level of µ g = 30.3 mag arcsec −2 on spatial scales of 1 (the approximate width of the stream). We find a qualitatively different morphology from that reported in the 2008 study. The Dragonfly data do not show two loops but a single curved stream with a total length of 45 (220 kpc). The surface brightness of the stream ranges from µ g ≈ 27.6 mag arcsec −2 to µ g ≈ 28.8 mag arcsec −2 , and it extends significantly beyond the region where tidal features had previously been detected. We find a density enhancement near the luminosity-weighted midpoint of the stream which we identify as the likely remnant of a nearly-disrupted progenitor galaxy. A restricted N-body simulation provides a qualitative match to the detected features. In terms of its spatial extent and stellar mass the stream is similar to Sagittarius, and our results demonstrate the efficacy of low surface brightness-optimized telescopes for obtaining maps of such large streams outside the Local Group. The census of these rare, relatively high mass events complements the census of common, low mass ones that is provided by studies of streams in the Milky Way halo.

show abstract

mentioning

confidence: 98%

mentioning

confidence: 99%

Dragonfly Imaging of the Galaxy NGC 5907: A Different View of the Iconic Stellar Stream

Dokkum

Gilhuly

Bonaca

et al. 2019

ApJL

View full text Add to dashboard Cite

show abstract

“…The pitfalls of deep imaging are illustrated by the recent controversy about the tidal streams of the Splinter Galaxy, NGC 5907. Several amateur observers equipped by small telescopes have observed the streams warping the galaxy multiple times -the refereed example is Martínez-Delgado et al (2008) -while the professional astronomers with bigger telescopes were able to detect only a part of this structure (Laine et al 2016;van Dokkum et al 2019;Müller et al 2019c;Alabi et al 2020). The case remains unresolved.…”

mentioning

confidence: 99%

Census and classification of low-surface-brightness structures in nearby early-type galaxies from the MATLAS survey

Bílek

Duc

Cuillandre

et al. 2020

Monthly Notices of the Royal Astronomical Society

View full text Add to dashboard Cite

The morphology of galaxies gives essential constraints on the models of galaxy evolution. The morphology of the features in the low-surface-brightness regions of galaxies has not been fully explored yet because of observational difficulties. Here we present the results of our visual inspections of very deep images of a large volume-limited sample of 177 nearby massive early-type galaxies (ETGs) from the MATLAS survey. The images reach a surface-brightness limit of 28.5 − 29 mag arcsec−2 in the g′ band. Using a dedicated navigation tool and questionnaire, we looked for structures at the outskirts of the galaxies such as tidal shells, streams, tails, disturbed outer isophotes or peripheral star-forming disks, and simultaneously noted the presence of contaminating sources, such as Galactic cirrus. We also inspected internal sub-structures such as bars and dust lanes. We discuss the reliability of this visual classification investigating the variety of answers made by the participants. We present the incidence of these structures and the trends of the incidence with the mass of the host galaxy and the density of its environment. We find an incidence of shells, stream and tails of approximately 15%, about the same for each category. For galaxies with masses over 1011 M⊙, the incidence of shells and streams increases about 1.7 times. We also note a strong unexpected anticorrelation of the incidence of Galactic cirrus with the environment density of the target galaxy. Correlations with other properties of the galaxies, and comparisons to model predictions, will be presented in future papers.

show abstract

“…The imaging used for this work was obtained using the wide-field Suprime-Cam imager on the 8.2m Subaru telescope with the SDSS gri filters under photometric conditions (0 .6−0 .9 seeing). Details of the observations and data reduction are explained in Laine et al (2016). The imager has a total field-of-view of 34 ×27 with a pixel scale of 0 .2 per pixel.…”

Section: Observationsmentioning

confidence: 99%

“…In this study, we present wide-field Subaru imaging of NGC 5907 and Keck spectroscopy of several GC candidates. We assume a distance of 17 Mpc to NGC 5907, as adopted by Laine et al (2016) and summarize salient properties of NGC 5907 in Table 1. Many of its properties are similar to those of the Milky Way.…”

Section: Introductionmentioning

confidence: 99%

Globular clusters in the stellar stream surrounding the Milky Way analogue NGC 5907

Alabi

Forbes

Romanowsky

et al. 2019

Monthly Notices of the Royal Astronomical Society

Self Cite

View full text Add to dashboard Cite

We study the globular clusters (GCs) in the spiral galaxy NGC 5907 well-known for its spectacular stellar stream -to better understand its origin. Using wide-field Subaru/Suprime-Cam gri images and deep Keck/DEIMOS multi-object spectroscopy, we identify and obtain the kinematics of several GCs superimposed on the stellar stream and the galaxy disk. We estimate the total number of globular clusters in NGC 5907 to be 154 ± 44, with a specific frequency of 0.73 ± 0.21. Our analysis also reveals a significant, new population of young star cluster candidates found mostly along the outskirts of the stellar disk. Using the properties of the stream GCs, we estimate that the disrupted galaxy has a stellar mass similar to the Sagittarius dwarf galaxy accreted by the Milky Way, i.e. ∼ 10 8 M .

show abstract

Metallicity and Age of the Stellar Stream Around the Disk Galaxy NGC 5907

Cited by 13 publications

References 74 publications

Dragonfly Imaging of the Galaxy NGC 5907: A Different View of the Iconic Stellar Stream

Dragonfly Imaging of the Galaxy NGC 5907: A Different View of the Iconic Stellar Stream

Census and classification of low-surface-brightness structures in nearby early-type galaxies from the MATLAS survey

Globular clusters in the stellar stream surrounding the Milky Way analogue NGC 5907

Contact Info

Product

Resources

About