Search Results - "Agarwal, Manan"
-
1
Dynamical Evolution of Four Old Galactic Open Clusters Traced by Their Constituent Stars with Gaia DR3
Published in The Astronomical journal (01-11-2024)“…Abstract We investigate the evolutionary stages of four open clusters—Berkeley 39, Collinder 261, NGC 6819, and NGC 7789—of ages ranging from 1.6 to 6 Gyr…”
Get full text
Journal Article -
2
X-Ray Diagnostics of Cassiopeia A’s “Green Monster”: Evidence for Dense Shocked Circumstellar Plasma
Published in Astrophysical journal. Letters (01-03-2024)“…Abstract The recent survey of the core-collapse supernova remnant Cassiopeia A (Cas A) with the MIRI instrument on board the James Webb Space Telescope (JWST)…”
Get full text
Journal Article -
3
Four Years of Type Ia Supernovae Observed by TESS: Early-time Light-curve Shapes and Constraints on Companion Interaction Models
Published in The Astrophysical journal (01-10-2023)“…Abstract We present 307 type Ia supernova (SN) light curves from the first 4 yr of the Transiting Exoplanet Survey Satellite mission. We use this sample to…”
Get full text
Journal Article -
4
ML-MOC: Machine Learning (kNN and GMM) based Membership determination for Open Clusters
Published in Monthly notices of the Royal Astronomical Society (01-04-2021)“…ABSTRACT The existing open-cluster membership determination algorithms are either prior dependent on some known parameters of clusters or are not automatable…”
Get full text
Journal Article -
5
Tidal tails in the disintegrating open cluster NGC 752
Published in Monthly notices of the Royal Astronomical Society (01-08-2021)“…ABSTRACT We utilize the robust membership determination algorithm, ML-MOC, on the precise astrometric and deep photometric data from Gaia Early Data Release 3…”
Get full text
Journal Article -
6
A Gaia EDR3 search for tidal tails in disintegrating open clusters
Published in Monthly notices of the Royal Astronomical Society (26-10-2022)“…ABSTRACT We carry out a search for tidal tails in a sample of open clusters with known relatively elongated morphology. We identify the member stars of these…”
Get full text
Journal Article -
7
Blue straggler populations of seven open clusters with Gaia DR2
Published in Monthly notices of the Royal Astronomical Society (01-08-2020)“…ABSTRACT Blue straggler stars (BSS) are well studied in globular clusters but their systematic study with secure membership determination is lacking in open…”
Get full text
Journal Article -
8
Characterization of hot populations of Melotte 66 open cluster using Swift/UVOT
Published in Monthly notices of the Royal Astronomical Society (10-09-2022)“…ABSTRACT Ultraviolet (UV) wavelength observations have made a significant contribution to our understanding of hot stellar populations of star clusters…”
Get full text
Journal Article -
9
UOCS – XI. Study of blue straggler stars in open cluster NGC 7142 using UVIT/AstroSat
Published in Monthly notices of the Royal Astronomical Society (01-01-2024)“…ABSTRACT We present a study of blue straggler stars (BSSs) of open cluster NGC 7142 using AstroSat/UVIT data and other archival data. Using a…”
Get full text
Journal Article -
10
Discovery of double BSS sequences in the old Galactic open cluster Berkeley 17
Published in Monthly notices of the Royal Astronomical Society. Letters (01-01-2023)“…ABSTRACT Blue straggler stars (BSS) are peculiar objects which normally appear as a single broad sequence along the extension of the main sequence. Only four…”
Get full text
Journal Article -
11
UOCS – VII. Blue straggler populations of open cluster NGC 7789 with UVIT/AstroSat
Published in Monthly notices of the Royal Astronomical Society (11-02-2022)“…ABSTRACT NGC 7789 is a ∼1.6 Gyr old, populous open cluster located at ∼2000 pc. We characterize the blue straggler stars (BSS) of this cluster using the…”
Get full text
Journal Article -
12
Determination of dynamical ages of open clusters through the A+ parameter – II
Published in Monthly notices of the Royal Astronomical Society (01-11-2023)“…ABSTRACT Blue straggler stars (BSS), one of the most massive members of star clusters, have been used for over a decade to investigate mass segregation and…”
Get full text
Journal Article -
13
Determination of dynamical ages of open clusters through the A+ parameter – I
Published in Monthly notices of the Royal Astronomical Society (01-12-2021)“…ABSTRACT The sedimentation level of blue straggler stars (BSS) has been shown to be a great tool to investigate the dynamical states of globular clusters…”
Get full text
Journal Article -
14
UOCS –VIII. UV study of the open cluster NGC 2506 using ASTROSAT
Published in Monthly notices of the Royal Astronomical Society (28-09-2022)“…ABSTRACT We study an intermediate-age open cluster (OC) NGC 2506 using the ASTROSAT/UVIT data and other archival data. We identified 2175 cluster members using…”
Get full text
Journal Article -
15
Agar-Based Composite Films as Effective Biodegradable Sound Absorbers
Published in ACS sustainable chemistry & engineering (04-07-2022)“…We investigated the use of seaweed-derived agar-based composite films as sound absorbers. Nonporous and porous films of varying concentrations of agar (1% to…”
Get full text
Journal Article -
16
SQUIDs for detection of potential dark matter candidates
Published 31-07-2024“…Superconducting QUantum Interference Devices (SQUIDs) are extremely sensitive magnetic flux sensors which render them useful in a wide array of…”
Get full text
Journal Article -
17
Dynamical Evolution of Four Old Galactic Open Clusters traced by their constituent stars with \textit{Gaia} DR3
Published 16-09-2024“…We investigate the evolutionary stages of four open clusters, Berkeley 39, Collinder 261, NGC 6819, and NGC 7789, of ages ranging from 1.6 -- 6 Gyr. These…”
Get full text
Journal Article -
18
X-ray diagnostics of Cassiopeia A's "Green Monster": evidence for dense shocked circumstellar plasma
Published 19-03-2024“…The Astrophysical Journal Letters, Volume 964, Issue 1, id.L11, 10 (2024) The recent survey of the core-collapse supernova remnant Cassiopeia A (CasA) with the…”
Get full text
Journal Article -
19
UOCS-XI. Study of blue straggler stars in open cluster NGC 7142 using UVIT/AstroSat
Published 07-12-2023“…We present a study of blue straggler stars (BSSs) of open cluster NGC 7142 using AstroSat/UVIT data and other archival data. Using a machine learning-based…”
Get full text
Journal Article -
20
Determination of dynamical ages of open clusters through the A$^+$ parameter -- II
Published 06-09-2023“…Blue straggler stars (BSS), one of the most massive members of star clusters, have been used for over a decade to investigate mass segregation and estimate the…”
Get full text
Journal Article