Khyati Malhan

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Khyati Malhan

Khyati Malhan

@kmalhan07

Astrophysicist | Ex @UCPH_Research @mpi_astro @Stockholm_Uni @ObsStrasbourg @UnivofDelhi |

Copenhagen Katılım Haziran 2015
106 Takip Edilen516 Takipçiler
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Khyati Malhan
Khyati Malhan@kmalhan07·
Discovery of two stellar structures in the orbit-metallicity space of our Galaxy. Shiva & Shakti appear to be two of those early, massive fragments that coalesced ~12 Gyr ago, forming the proto-Milky Way. Published in ApJ. arxiv.org/abs/2403.13051 @ESAGaia @APOGEEsurvey @mpi_astro
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David Martínez-Delgado
David Martínez-Delgado@astro_delgado·
In our new paper today (arxiv.org/abs/2407.20483), we report the catalog and photometry of the extragalactic tidal streams found in @theDESurvey as part of the Stellar Stream Legacy Survey. A comparison of the stream frequency with cosmological models is coming very soon!
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Khyati Malhan
Khyati Malhan@kmalhan07·
@jsbagla The decreasing number of satellites per host is becuase with increasing distance it becomes more and more challenging to find fainter systems. :)
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Geevarghese George
Geevarghese George@thatgeeman·
Me trying to buy a calculus practice book looking at amazon reviews
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Khyati Malhan
Khyati Malhan@kmalhan07·
The Gaia-Sausage/Enceladus stars, which were previously hypothesized to have originated from an ancient (8-11 Gyrs ago) merger event, likely came from a more recent (< 3 Gyrs ago) event, now dubbed as the Virgo Radial Merger (VRM).
ESA Science@esascience

📢 @ESAGaia reveals that the Milky Way’s last major collision was surprisingly recent! Gaia unravels our history by studying the wrinkles created by collisions, but there's a catch. Like Benjamin Button, our galaxy is getting less wrinkly over time 👉 esa.int/Science_Explor…

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Vedant Chandra
Vedant Chandra@vedantchandra·
Paper day! A central result from our survey of the Milky Way's outskirts: "All-Sky Kinematics of the Distant Halo: The Reflex Response to the LMC" arxiv.org/abs/2406.01676
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Akshara Viswanathan
Akshara Viswanathan@astroakshara·
Paper thread!! This was up on arXiv a bit over a week ago: arxiv.org/abs/2405.13124 We show here the dynamical analysis of the first spectroscopic follow-up of extremely metal-poor stars using photometric metallicities based on Gaia XP CaHK magnitudes run on Pristine survey model
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Karina Voggel ✨🔭🏃🏼‍♀️
Karina Voggel ✨🔭🏃🏼‍♀️@KarinaVoggel·
The paper I have been working on for a while is out! In this one I predicted the detectability of Globular Clusters in the full 6-year Euclid survey! And then tested detection models and size measurement using the first ERO data on the Fornax Cluster! arxiv.org/abs/2405.14015
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Eduardo Balbinot
Eduardo Balbinot@balbinotdd·
Paper day: arxiv.org/abs/2404.11604 We show that Gaia BH3 is part of the ED-2 star cluster. The update astrometry puts GaiaBH3 in excellent agreement with the orbit of ED-2. Using some @ESO data we got last period we also show that ED-2 is very likely a disrupted globular cluster
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Paul McMillan
Paul McMillan@McMillan_Astro·
Paper day! With @ViktorHJonsson looking at velocities of stars in the Milky Way's warp. We find that they just don't match the picture of a steadily precessing warp where we see it today. arxiv.org/abs/2405.09624
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David Martínez-Delgado
David Martínez-Delgado@astro_delgado·
Our paper on the discovery of five dwarf galaxies around the galaxy NGC 253, found by @GJDonatiello in the @desisurvey deep imaging, is available today in: arxiv.org/pdf/2405.03769. This result gives new insights on the presence of a satellite plane in this Sculptor group spiral.
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Khyati Malhan
Khyati Malhan@kmalhan07·
Galactic map of #StellarStreams detected in the @ESAGaia dataset. Each star in the stream represents an actual Gaia source, color-coded by heliocentric distance (as computed by the STREAMFINDER algorithm): blue for nearer (~1 kpc) and red for distant (>~30 kpc).
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Keşfet

@ESAGaia @APOGEEsurvey @theDESurvey @jsbagla @desisurvey @monica_valluri @thatgeeman @StefanPWinc